mirror of
https://github.com/Garux/netradiant-custom.git
synced 2026-09-28 00:00:03 +02:00
1584 lines
56 KiB
C++
1584 lines
56 KiB
C++
/* -------------------------------------------------------------------------------
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Copyright (C) 1999-2007 id Software, Inc. and contributors.
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For a list of contributors, see the accompanying CONTRIBUTORS file.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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----------------------------------------------------------------------------------
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This code has been altered significantly from its original form, to support
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several games based on the Quake III Arena engine, in the form of "Q3Map2."
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------------------------------------------------------------------------------- */
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/* dependencies */
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#include "q3map2.h"
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#include "model.h"
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#include "qspatial.h"
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#include ASSIMP_INCLUDE(assimp/Importer.hpp)
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#include ASSIMP_INCLUDE(assimp/importerdesc.h)
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#include ASSIMP_INCLUDE(assimp/Logger.hpp)
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#include ASSIMP_INCLUDE(assimp/DefaultLogger.hpp)
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#include ASSIMP_INCLUDE(assimp/IOSystem.hpp)
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#include ASSIMP_INCLUDE(assimp/MemoryIOWrapper.h)
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#include ASSIMP_INCLUDE(assimp/postprocess.h)
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#include ASSIMP_INCLUDE(assimp/scene.h)
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#include ASSIMP_INCLUDE(assimp/mesh.h)
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#include <map>
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class AssLogger : public Assimp::Logger
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{
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public:
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void OnDebug( const char* message ) override {
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#ifdef _DEBUG
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Sys_Printf( "%s\n", message );
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#endif
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}
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void OnVerboseDebug( const char *message ) override {
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#ifdef _DEBUG
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Sys_FPrintf( SYS_VRB, "%s\n", message );
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#endif
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}
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void OnInfo( const char* message ) override {
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#ifdef _DEBUG
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Sys_Printf( "%s\n", message );
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#endif
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}
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void OnWarn( const char* message ) override {
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Sys_Warning( "%s\n", message );
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}
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void OnError( const char* message ) override {
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Sys_FPrintf( SYS_WRN, "ERROR: %s\n", message ); /* let it be a warning, since radiant stops monitoring on error message flag */
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}
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bool attachStream( Assimp::LogStream *pStream, unsigned int severity ) override {
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return false;
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}
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bool detachStream( Assimp::LogStream *pStream, unsigned int severity ) override {
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return false;
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}
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};
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class AssIOSystem : public Assimp::IOSystem
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{
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public:
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// -------------------------------------------------------------------
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/** @brief Tests for the existence of a file at the given path.
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*
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* @param pFile Path to the file
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* @return true if there is a file with this path, else false.
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*/
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bool Exists( const char* pFile ) const override {
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return vfsGetFileCount( pFile ) != 0;
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}
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// -------------------------------------------------------------------
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/** @brief Returns the system specific directory separator
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* @return System specific directory separator
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*/
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char getOsSeparator() const override {
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return '/';
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}
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// -------------------------------------------------------------------
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/** @brief Open a new file with a given path.
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*
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* When the access to the file is finished, call Close() to release
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* all associated resources (or the virtual dtor of the IOStream).
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*
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* @param pFile Path to the file
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* @param pMode Desired file I/O mode. Required are: "wb", "w", "wt",
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* "rb", "r", "rt".
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*
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* @return New IOStream interface allowing the lib to access
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* the underlying file.
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* @note When implementing this class to provide custom IO handling,
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* you probably have to supply an own implementation of IOStream as well.
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*/
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Assimp::IOStream* Open( const char* pFile, const char* pMode = "rb" ) override {
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if ( MemBuffer boo = vfsLoadFile( pFile ) ) {
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return new Assimp::MemoryIOStream( boo.release(), boo.size(), true );
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}
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return nullptr;
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}
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// -------------------------------------------------------------------
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/** @brief Closes the given file and releases all resources
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* associated with it.
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* @param pFile The file instance previously created by Open().
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*/
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void Close( Assimp::IOStream* pFile ) override {
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delete pFile;
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}
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// -------------------------------------------------------------------
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/** @brief CReates an new directory at the given path.
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* @param path [in] The path to create.
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* @return True, when a directory was created. False if the directory
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* cannot be created.
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*/
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bool CreateDirectory( const std::string &path ) override {
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Error( "AssIOSystem::CreateDirectory" );
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return false;
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}
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// -------------------------------------------------------------------
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/** @brief Will change the current directory to the given path.
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* @param path [in] The path to change to.
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* @return True, when the directory has changed successfully.
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*/
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bool ChangeDirectory( const std::string &path ) override {
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Error( "AssIOSystem::ChangeDirectory" );
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return false;
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}
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bool DeleteFile( const std::string &file ) override {
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Error( "AssIOSystem::DeleteFile" );
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return false;
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}
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private:
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};
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static Assimp::Importer *s_assImporter = nullptr;
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void assimp_init(){
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s_assImporter = new Assimp::Importer();
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s_assImporter->SetPropertyBool( AI_CONFIG_PP_PTV_ADD_ROOT_TRANSFORMATION, true );
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s_assImporter->SetPropertyInteger( AI_CONFIG_PP_SBP_REMOVE, aiPrimitiveType_POINT | aiPrimitiveType_LINE );
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s_assImporter->SetPropertyString( AI_CONFIG_IMPORT_MDL_COLORMAP, "gfx/palette.lmp" ); // Q1 palette, default is fine too
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s_assImporter->SetPropertyBool( AI_CONFIG_IMPORT_MD3_LOAD_SHADERS, false );
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s_assImporter->SetPropertyString( AI_CONFIG_IMPORT_MD3_SHADER_SRC, "scripts/" );
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s_assImporter->SetPropertyBool( AI_CONFIG_IMPORT_MD3_HANDLE_MULTIPART, false );
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s_assImporter->SetPropertyInteger( AI_CONFIG_PP_RVC_FLAGS, aiComponent_TANGENTS_AND_BITANGENTS ); // varying tangents prevent aiProcess_JoinIdenticalVertices
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Assimp::DefaultLogger::set( new AssLogger );
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s_assImporter->SetIOHandler( new AssIOSystem );
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}
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struct ModelNameFrame
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{
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CopiedString m_name;
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int m_frame;
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bool operator<( const ModelNameFrame& other ) const {
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const int cmp = string_compare_nocase( m_name.c_str(), other.m_name.c_str() );
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return cmp != 0? cmp < 0 : m_frame < other.m_frame;
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}
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};
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struct AssModel
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{
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struct AssModelMesh final : public AssMeshWalker
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{
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const aiMesh *m_mesh;
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CopiedString m_shader;
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AssModelMesh( const aiScene *scene, const aiMesh *mesh, const char *rootPath ) : m_mesh( mesh ){
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aiMaterial *material = scene->mMaterials[mesh->mMaterialIndex];
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aiString matname = material->GetName();
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#ifdef _DEBUG
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Sys_Printf( "matname: %s\n", matname.C_Str() );
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#endif
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if( aiString texname;
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aiReturn_SUCCESS == material->Get( AI_MATKEY_TEXTURE_DIFFUSE( 0 ), texname )
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&& texname.length != 0
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&& !string_equal_prefix_nocase( matname.C_Str(), "textures/" ) /* matname looks intentionally named as ingame shader */
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&& !string_equal_prefix_nocase( matname.C_Str(), "textures\\" )
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&& !string_equal_prefix_nocase( matname.C_Str(), "models/" )
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&& !string_equal_prefix_nocase( matname.C_Str(), "models\\" ) ){
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#ifdef _DEBUG
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Sys_Printf( "texname: %s\n", texname.C_Str() );
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#endif
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m_shader = StringStream<64>( PathCleaned( PathExtensionless( texname.C_Str() ) ) );
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}
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else{
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m_shader = StringStream<64>( PathCleaned( PathExtensionless( matname.C_Str() ) ) );
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}
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const CopiedString oldShader( m_shader );
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if( strchr( m_shader.c_str(), '/' ) == nullptr ){ /* texture is likely in the folder, where model is */
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m_shader = StringStream<64>( rootPath, m_shader );
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}
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else{
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const char *name = m_shader.c_str();
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if( name[0] == '/' || ( name[0] != '\0' && name[1] == ':' ) || strstr( name, ".." ) ){ /* absolute path or with .. */
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const char* p;
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if( ( p = string_in_string_nocase( name, "/models/" ) )
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|| ( p = string_in_string_nocase( name, "/textures/" ) ) ){
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m_shader = p + 1;
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}
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else{
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m_shader = StringStream<64>( rootPath, path_get_filename_start( name ) );
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}
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}
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}
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if( oldShader != m_shader )
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Sys_FPrintf( SYS_VRB, "substituting: %s -> %s\n", oldShader.c_str(), m_shader.c_str() );
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}
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void forEachFace( std::function<void( const Vector3 ( &xyz )[3], const Vector2 ( &st )[3])> visitor ) const override {
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for ( const aiFace& face : Span( m_mesh->mFaces, m_mesh->mNumFaces ) ){
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// if( face.mNumIndices == 3 )
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Vector3 xyz[3];
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Vector2 st[3];
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for( size_t n = 0; n < 3; ++n ){
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const auto i = face.mIndices[n];
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xyz[n] = { m_mesh->mVertices[i].x, m_mesh->mVertices[i].y, m_mesh->mVertices[i].z };
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if( m_mesh->HasTextureCoords( 0 ) )
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st[n] = { m_mesh->mTextureCoords[0][i].x, m_mesh->mTextureCoords[0][i].y };
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else
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st[n] = Vector2( 0 );
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}
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visitor( xyz, st );
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}
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}
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const char *getShaderName() const override {
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return m_shader.c_str();
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}
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};
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aiScene *m_scene;
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std::vector<AssModelMesh> m_meshes;
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AssModel( aiScene *scene, const char *modelname ) : m_scene( scene ){
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m_meshes.reserve( scene->mNumMeshes );
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const auto rootPath = StringStream<64>( PathCleaned( PathFilenameless( modelname ) ) );
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const auto traverse = [&]( const auto& self, const aiNode* node ) -> void {
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for( size_t n = 0; n < node->mNumMeshes; ++n ){
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const aiMesh *mesh = scene->mMeshes[node->mMeshes[n]];
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if( mesh->mPrimitiveTypes & aiPrimitiveType_TRIANGLE ){
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m_meshes.emplace_back( scene, mesh, rootPath );
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}
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}
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// traverse all children
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for ( size_t n = 0; n < node->mNumChildren; ++n ){
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self( self, node->mChildren[n] );
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}
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};
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traverse( traverse, scene->mRootNode );
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}
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};
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static std::map<ModelNameFrame, AssModel> s_assModels;
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/*
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LoadModel() - ydnar
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loads a picoModel and returns a pointer to the picoModel_t struct or NULL if not found
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*/
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static AssModel *LoadModel( const char *name, int frame ){
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/* dummy check */
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if ( strEmptyOrNull( name ) ) {
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return nullptr;
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}
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/* try to find existing picoModel */
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auto it = s_assModels.find( ModelNameFrame{ name, frame } );
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if( it != s_assModels.end() ){
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return &it->second;
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}
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unsigned flags = //aiProcessPreset_TargetRealtime_Fast
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// | aiProcess_FixInfacingNormals
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aiProcess_GenNormals
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| aiProcess_JoinIdenticalVertices
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| aiProcess_Triangulate
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| aiProcess_GenUVCoords
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| aiProcess_SortByPType
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| aiProcess_FindDegenerates
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| aiProcess_FindInvalidData
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| aiProcess_ValidateDataStructure
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| aiProcess_FlipUVs
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| aiProcess_FlipWindingOrder
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| aiProcess_PreTransformVertices
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| aiProcess_RemoveComponent
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| aiProcess_SplitLargeMeshes;
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// rotate the whole scene 90 degrees around the x axis to convert assimp's Y = UP to Quakes's Z = UP
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s_assImporter->SetPropertyMatrix( AI_CONFIG_PP_PTV_ROOT_TRANSFORMATION, aiMatrix4x4( 1, 0, 0, 0,
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0, 0, -1, 0,
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0, 1, 0, 0,
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0, 0, 0, 1 ) ); // aiMatrix4x4::RotationX( c_half_pi )
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s_assImporter->SetPropertyInteger( AI_CONFIG_PP_SLM_VERTEX_LIMIT, maxSurfaceVerts ); // TODO this optimal and with respect to lightmapped/not
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s_assImporter->SetPropertyInteger( AI_CONFIG_IMPORT_GLOBAL_KEYFRAME, frame );
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const aiScene *scene = s_assImporter->ReadFile( name, flags );
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if( scene != nullptr ){
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if( scene->mFlags & AI_SCENE_FLAGS_INCOMPLETE )
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Sys_Warning( "AI_SCENE_FLAGS_INCOMPLETE\n" );
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return &s_assModels.emplace( ModelNameFrame{ name, frame }, AssModel( s_assImporter->GetOrphanedScene(), name ) ).first->second;
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}
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else{
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return nullptr; // TODO /* if loading failed, make a bogus model to silence the rest of the warnings */
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}
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}
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std::vector<const AssMeshWalker*> LoadModelWalker( const char *name, int frame ){
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AssModel *model = LoadModel( name, frame );
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std::vector<const AssMeshWalker*> vector;
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if( model != nullptr )
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for( const auto& val : model->m_meshes )
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vector.push_back( &val );
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return vector;
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}
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enum EModelFlags{
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eRMG_BSP = 1 << 0,
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eClipModel = 1 << 1,
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eForceMeta = 1 << 2,
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eExtrudeFaceNormals = 1 << 3,
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eExtrudeTerrain = 1 << 4,
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eColorToAlpha = 1 << 5,
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eNoSmooth = 1 << 6,
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eExtrudeVertexNormals = 1 << 7,
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ePyramidalClip = 1 << 8,
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eExtrudeDownwards = 1 << 9,
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eExtrudeUpwards = 1 << 10,
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eMaxExtrude = 1 << 11,
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eAxialBackplane = 1 << 12,
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eClipFlags = eClipModel | eExtrudeFaceNormals | eExtrudeTerrain | eExtrudeVertexNormals | ePyramidalClip | eExtrudeDownwards | eExtrudeUpwards | eMaxExtrude | eAxialBackplane,
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};
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template<class T>
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size_t normal_make_axial( BasicVector3<T>& normal ){
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const size_t i = vector3_max_abs_component_index( normal );
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normal = normal[i] >= 0? g_vector3_axes[i] : -g_vector3_axes[i];
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return i;
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}
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struct ClipWinding
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{
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Plane3 plane;
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winding_accu_t points;
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int dsIdx; // index in ClipTriangles::modelSurfs array
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MinMax minmax; // X is on c_spatial_sort_direction
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ClipWinding( const Plane3& plane, winding_accu_t&& points, int dsIdx ) : plane( plane ), points( std::move( points ) ), dsIdx( dsIdx ){
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for( const DoubleVector3& p : this->points )
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minmax.extend( Vector3( spatial_distance( p ), p.y(), p.z() ) );
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}
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bool operator<( const ClipWinding& other ) const noexcept {
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return minmax.mins.x() > other.minmax.mins.x(); // decreasing order (to iterate from the end)
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}
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// for volumetric merge
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std::vector<ClipWinding> frontWindings;
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Vector3 bestNormal;
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bool isplanar() const {
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return frontWindings.size() <= 1;
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}
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};
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struct ClipTriangles
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{
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// separate by surfaceFlags, contentFlags, compileFlags, sort by c_spatial_sort_direction distance
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std::map<std::tuple<int, int, int>, std::vector<ClipWinding>> triangleSets;
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std::vector<mapDrawSurface_t*> modelSurfs;
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// optional arrays of terrain clip params parallel with modelSurfs
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// allocate anytime for use simplicity
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std::vector<MinMax> minmaxes;
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std::vector<Vector3> avgDirections;
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ClipTriangles( size_t nSurfs ) : minmaxes( nSurfs ), avgDirections( nSurfs, g_vector3_identity ){
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modelSurfs.reserve( nSurfs );
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}
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};
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struct ClipSides
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{
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Plane3f fplane; // front plane
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winding_accu_t fw; // front winding
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Plane3f bplane{ 0, 0, 0, 0 }; // back plane, present if != 0
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winding_accu_t bw; // back winding
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std::vector<Plane3> splanes; // side planes, using fw[i], fw[i + 1] points, size = fw.size
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shaderInfo_t &si;
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entity_t& entity;
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const double clipDepth;
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ClipSides( shaderInfo_t& si, entity_t& entity, float clipDepth ) : si( si ), entity( entity ), clipDepth( clipDepth ){
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}
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/* construct front plane and allocate sides, requires fw */
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bool construct(){
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/* prepare a brush */
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buildBrush.sides.reserve( MAX_BUILD_SIDES );
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buildBrush.entityNum = entity.mapEntityNum;
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buildBrush.contentShader = &si;
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buildBrush.compileFlags = si.compileFlags;
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buildBrush.contentFlags = si.contentFlags;
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buildBrush.detail = true;
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// choose decent triangle to create plane
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using Witer = decltype( fw )::const_iterator;
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Witer a = fw.cbegin(), b = a + 1, c = b + 1;
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const auto perimeter = []( Witer a, Witer b, Witer c ){
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return vector3_length_squared( *b - *a ) +
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vector3_length_squared( *a - *c ) +
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vector3_length_squared( *c - *b );
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};
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while( c + 1 != fw.cend() && perimeter( a, b, c + 1 ) > perimeter( a, b, c ) )
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++c;
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while( b + 1 != c && perimeter( a, b + 1, c ) > perimeter( a, b, c ) )
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++b;
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if( !PlaneFromPoints( fplane, *a, *b, *c ) )
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return false;
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// snap points before using them for further calculations
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// precision suffers a lot, when two of normal values are under .00025 (often no collision, knocking up effect in ioq3)
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// also broken drawsurfs in case of normal brushes
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// ? worth to snap nearly axial edges (or on nearly axial plane) beforehand or SnapPlaneImproved is nuff good for sides
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// latter seems good nuff, no noticeable difference
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|
if( SnapPlaneImproved( fplane, Span( std::as_const( fw ) ) ) ){
|
|
for( DoubleVector3& v : fw ){
|
|
v = plane3_project_point( fplane, v );
|
|
}
|
|
}
|
|
|
|
splanes.resize( fw.size() );
|
|
|
|
/* sanity check */
|
|
if ( triangle_min_angle_squared_sin( *a, *b, *c ) < 1e-8 ) // degenerate triangle
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
bool construct_volumetric( const std::vector<ClipWinding>& frontWindings ){
|
|
/* prepare a brush */
|
|
buildBrush.sides.reserve( MAX_BUILD_SIDES );
|
|
buildBrush.entityNum = entity.mapEntityNum;
|
|
buildBrush.contentShader = &si;
|
|
buildBrush.compileFlags = si.compileFlags;
|
|
buildBrush.contentFlags = si.contentFlags;
|
|
buildBrush.detail = true;
|
|
// note this is required by eAxialBackplane + limDepth; this is wrong
|
|
fplane = Plane3f( frontWindings[0].plane );
|
|
|
|
splanes.resize( fw.size() );
|
|
|
|
return true;
|
|
}
|
|
|
|
void add_back_plane( const Vector3& bestNormal ){
|
|
bplane = plane3_flipped( fplane );
|
|
bplane.dist() += vector3_dot( bestNormal, fplane.normal() ) * clipDepth;
|
|
bw = fw;
|
|
for( DoubleVector3& v : bw )
|
|
v -= bestNormal * clipDepth;
|
|
}
|
|
|
|
bool create_brush() const {
|
|
const bool doBack = bplane.normal() != g_vector3_identity;
|
|
auto& sides = buildBrush.sides;
|
|
/* set up brush sides */
|
|
sides.clear(); // clear, so resize() will value-initialize elements
|
|
sides.resize( splanes.size() + 1 + doBack );
|
|
|
|
if( debugClip ){
|
|
sides[0].shaderInfo = &ShaderInfoForShader( "debugclip2" );
|
|
for ( size_t i = 1; i < sides.size(); ++i )
|
|
sides[i].shaderInfo = &ShaderInfoForShader( "debugclip" );
|
|
}
|
|
else{
|
|
sides[0].shaderInfo = &si;
|
|
sides[0].surfaceFlags = si.surfaceFlags;
|
|
for ( size_t i = 1; i < sides.size(); ++i )
|
|
sides[i].shaderInfo = nullptr; // don't emit these faces as draw surfaces, should make smaller BSPs; hope this works
|
|
}
|
|
|
|
sides[0].planenum = FindFloatPlane( fplane, fw );
|
|
// sides[0].plane = Plane3( fplane );
|
|
for( size_t i = 0; i < splanes.size(); ++i ){
|
|
sides[i + 1].planenum = FindFloatPlane( Plane3f( splanes[i] ), std::array{ fw[i], winding_next_point( fw, i ) } );
|
|
// sides[i + 1].plane = splanes[i]; // this only improves debug windings quality, but it's better to respect actual bsp planes
|
|
}
|
|
if( doBack ){
|
|
sides.back().planenum = FindFloatPlane( bplane, bw );
|
|
// sides.back().plane = Plane3( bplane );
|
|
}
|
|
|
|
/* add to entity */
|
|
if ( CreateBrushWindings( buildBrush ) ) {
|
|
AddBrushBevels();
|
|
brush_t& newBrush = entity.brushes.emplace_front( buildBrush );
|
|
newBrush.original = &newBrush;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
bool create_volumetric_brush( const std::vector<ClipWinding>& frontWindings ) const {
|
|
const bool doBack = bplane.normal() != g_vector3_identity;
|
|
const size_t fwsize = frontWindings.size();
|
|
auto& sides = buildBrush.sides;
|
|
/* set up brush sides */
|
|
sides.clear(); // clear, so resize() will value-initialize elements
|
|
sides.resize( splanes.size() + fwsize + doBack );
|
|
|
|
if( debugClip ){
|
|
for ( size_t i = 0; i < fwsize; ++i )
|
|
sides[i].shaderInfo = &ShaderInfoForShader( "debugclip2" );
|
|
for ( size_t i = fwsize; i < sides.size(); ++i )
|
|
sides[i].shaderInfo = &ShaderInfoForShader( "debugclip" );
|
|
}
|
|
else{
|
|
for ( size_t i = 0; i < fwsize; ++i ){
|
|
sides[i].shaderInfo = &si;
|
|
sides[i].surfaceFlags = si.surfaceFlags;
|
|
}
|
|
for ( size_t i = fwsize; i < sides.size(); ++i )
|
|
sides[i].shaderInfo = nullptr; // don't emit these faces as draw surfaces, should make smaller BSPs; hope this works
|
|
}
|
|
|
|
for ( size_t i = 0; i < fwsize; ++i )
|
|
sides[i].planenum = FindFloatPlane( Plane3f( frontWindings[i].plane ), frontWindings[i].points );
|
|
for( size_t i = 0; i < splanes.size(); ++i ){
|
|
sides[i + fwsize].planenum = FindFloatPlane( Plane3f( splanes[i] ), std::array{ fw[i], winding_next_point( fw, i ) } );
|
|
}
|
|
if( doBack ){
|
|
sides.back().planenum = FindFloatPlane( bplane, bw );
|
|
}
|
|
|
|
/* add to entity */
|
|
if ( CreateBrushWindings( buildBrush ) ) {
|
|
AddBrushBevels();
|
|
brush_t& newBrush = entity.brushes.emplace_front( buildBrush );
|
|
newBrush.original = &newBrush;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
};
|
|
|
|
|
|
static void clipModel_default( ClipSides& cs ){
|
|
// axial normal
|
|
DoubleVector3 bestNormal = cs.fplane.normal();
|
|
normal_make_axial( bestNormal );
|
|
|
|
/* make side planes */
|
|
for ( size_t i = 0; i < cs.fw.size(); ++i )
|
|
{
|
|
cs.splanes[i].normal() = VectorNormalized( vector3_cross( bestNormal, winding_next_point( cs.fw, i ) - cs.fw[i] ) );
|
|
cs.splanes[i].dist() = vector3_dot( cs.fw[i], cs.splanes[i].normal() );
|
|
}
|
|
|
|
/* make back plane */
|
|
cs.add_back_plane( bestNormal );
|
|
}
|
|
|
|
static void clipModel_pyramidal( ClipSides& cs ){
|
|
/* calculate center */
|
|
DoubleVector3 cnt = WindingCentroid( cs.fw );
|
|
/* make back pyramid point */
|
|
cnt -= cs.fplane.normal() * cs.clipDepth;
|
|
|
|
/* make side planes */
|
|
for ( size_t i = 0; i < cs.fw.size(); ++i )
|
|
{
|
|
PlaneFromPoints( cs.splanes[i], winding_next_point( cs.fw, i ), cs.fw[i], cnt );
|
|
#if 0 // no definite profit
|
|
const auto susNormal = []( float a, float b ){ return ( a != 0 || b != 0 ) && std::fabs( a ) < .00025f && std::fabs( b ) < .00025f; };
|
|
if( susNormal( cs.splanes[i].a, cs.splanes[i].b )
|
|
|| susNormal( cs.splanes[i].a, cs.splanes[i].c )
|
|
|| susNormal( cs.splanes[i].b, cs.splanes[i].c ) ){
|
|
cnt -= cs.fplane.normal() * .125; // shift, if produces sus sides, since extreme angle with front
|
|
i = -1; // restart loop
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static void clipModel_faceNormals( ClipSides& cs ){
|
|
/* make side planes */
|
|
for ( size_t i = 0; i < cs.fw.size(); ++i )
|
|
{
|
|
cs.splanes[i].normal() = VectorNormalized( vector3_cross( DoubleVector3( cs.fplane.normal() ), winding_next_point( cs.fw, i ) - cs.fw[i] ) );
|
|
cs.splanes[i].dist() = vector3_dot( cs.fw[i], cs.splanes[i].normal() );
|
|
}
|
|
|
|
/* make back plane */
|
|
cs.add_back_plane( cs.fplane.normal() );
|
|
}
|
|
|
|
static void clipModel_vertexNormals( ClipSides& cs, const std::array<Vector3, 3>& Vnorm, bool noOutwardsCheck ){
|
|
std::array<Vector3, 3> Enorm;
|
|
|
|
//avg normals for side planes
|
|
for ( int i = 0; i < 3; ++i )
|
|
{
|
|
Enorm[i] = VectorNormalized( Vnorm[i] + Vnorm[( i + 1 ) % 3] );
|
|
//check fuer bad ones
|
|
const Vector3 nrm = VectorNormalized( vector3_cross( cs.fplane.normal(), cs.fw[( i + 1 ) % 3] - cs.fw[i] ) );
|
|
//check for negative or outside direction
|
|
if ( vector3_dot( Enorm[i], cs.fplane.normal() ) > 0.1 ){
|
|
if ( ( vector3_dot( Enorm[i], nrm ) > -0.2 ) || noOutwardsCheck ){
|
|
//ok++;
|
|
continue;
|
|
}
|
|
}
|
|
//notok++;
|
|
//Sys_Printf( "faulty Enormal %i/%i\n", notok, ok );
|
|
//use 45 normal
|
|
Enorm[i] = VectorNormalized( cs.fplane.normal() + nrm );
|
|
}
|
|
|
|
/* make side planes */
|
|
for ( int i = 0; i < 3; ++i )
|
|
{
|
|
cs.splanes[i].normal() = VectorNormalized( vector3_cross( DoubleVector3( Enorm[i] ), cs.fw[( i + 1 ) % 3] - cs.fw[i] ) );
|
|
cs.splanes[i].dist() = vector3_dot( cs.fw[i], cs.splanes[i].normal() );
|
|
}
|
|
|
|
/* make back plane */
|
|
cs.add_back_plane( cs.fplane.normal() );
|
|
}
|
|
|
|
static void clipModel_45( ClipSides& cs ){
|
|
/* 45 degrees normals for side planes */
|
|
for ( size_t i = 0; i < cs.fw.size(); ++i )
|
|
{
|
|
const DoubleVector3 enrm = VectorNormalized( vector3_cross( DoubleVector3( cs.fplane.normal() ), winding_next_point( cs.fw, i ) - cs.fw[i] ) );
|
|
/* make side planes */
|
|
cs.splanes[i].normal() = VectorNormalized( enrm - cs.fplane.normal() );
|
|
cs.splanes[i].dist() = vector3_dot( cs.fw[i], cs.splanes[i].normal() );
|
|
}
|
|
|
|
/* make back plane */
|
|
cs.add_back_plane( cs.fplane.normal() );
|
|
}
|
|
|
|
static Vector3 clipModel_terrain_bestNormal( const int spf, const DoubleVector3& normal, const Vector3& avgDirection ){
|
|
Vector3 bestNormal;
|
|
if ( spf & eExtrudeTerrain ){ // automatic axial direction
|
|
bestNormal = avgDirection;
|
|
}
|
|
else if ( ( spf & eExtrudeDownwards ) && ( spf & eExtrudeUpwards ) ){
|
|
bestNormal = ( normal.z() > 0 )? g_vector3_axis_z : -g_vector3_axis_z;
|
|
}
|
|
else if ( spf & eExtrudeDownwards ){
|
|
bestNormal = g_vector3_axis_z;
|
|
}
|
|
else if ( spf & eExtrudeUpwards ){
|
|
bestNormal = -g_vector3_axis_z;
|
|
}
|
|
else{ // best axial normal with eAxialBackplane
|
|
normal_make_axial( bestNormal = normal );
|
|
}
|
|
return bestNormal;
|
|
}
|
|
|
|
constexpr double c_extrude_epsilon = 0.05;
|
|
|
|
static void clipModel_terrain( ClipSides& cs, const DoubleVector3& bestNormal ){
|
|
if ( vector3_dot( cs.fplane.normal(), bestNormal ) < c_extrude_epsilon ){
|
|
return clipModel_default( cs );
|
|
}
|
|
|
|
/* make side planes */
|
|
for ( size_t i = 0; i < cs.fw.size(); ++i )
|
|
{
|
|
cs.splanes[i].normal() = VectorNormalized( vector3_cross( bestNormal, winding_next_point( cs.fw, i ) - cs.fw[i] ) );
|
|
cs.splanes[i].dist() = vector3_dot( cs.fw[i], cs.splanes[i].normal() );
|
|
}
|
|
|
|
cs.add_back_plane( bestNormal );
|
|
}
|
|
|
|
static void clipModel_terrainSpecialBack( ClipSides& cs, const int spf, const Vector3& bestNormal, const MinMax& minmax, const float limDepth ){
|
|
/* make side planes */
|
|
for ( size_t i = 0; i < cs.fw.size(); ++i )
|
|
{
|
|
cs.splanes[i].normal() = VectorNormalized( vector3_cross( DoubleVector3( bestNormal ), winding_next_point( cs.fw, i ) - cs.fw[i] ) );
|
|
cs.splanes[i].dist() = vector3_dot( cs.fw[i], cs.splanes[i].normal() );
|
|
}
|
|
|
|
const size_t axis = vector3_max_abs_component_index( bestNormal );
|
|
|
|
/* make back plane */
|
|
if ( spf & eMaxExtrude ){
|
|
cs.bplane.normal() = -bestNormal;
|
|
if ( bestNormal[axis] > 0 )
|
|
cs.bplane.dist() = -minmax.mins[axis] + cs.clipDepth;
|
|
else
|
|
cs.bplane.dist() = minmax.maxs[axis] + cs.clipDepth;
|
|
}
|
|
else if ( spf & eAxialBackplane ){
|
|
cs.bplane.normal() = -bestNormal;
|
|
const auto getCoord = [axis]( const DoubleVector3& p ){ return p[axis]; };
|
|
if ( bestNormal[axis] > 0 )
|
|
cs.bplane.dist() = -std::ranges::min( cs.fw, {}, getCoord )[axis] + cs.clipDepth;
|
|
else
|
|
cs.bplane.dist() = std::ranges::max( cs.fw, {}, getCoord )[axis] + cs.clipDepth;
|
|
|
|
if ( limDepth != 0 ){
|
|
Vector3 farpoint = ( bestNormal[axis] > 0 )
|
|
? std::ranges::max( cs.fw, {}, getCoord )
|
|
: std::ranges::min( cs.fw, {}, getCoord );
|
|
farpoint = plane3_project_point( cs.bplane, farpoint );
|
|
if ( -plane3_distance_to_point( cs.fplane, farpoint ) > limDepth ){
|
|
cs.add_back_plane( bestNormal ); // normal backplane // FIXME will fail with volumetric winding
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void clipModel_axialPyramid( ClipSides& cs, const float limDepth ){
|
|
for ( int i = 0; i < 3; ++i )
|
|
if ( std::fabs( cs.fplane.normal()[i] ) < c_extrude_epsilon
|
|
&& std::fabs( cs.fplane.normal()[( i + 1 ) % 3] ) < c_extrude_epsilon ) // no way, close to lay on two axes
|
|
return clipModel_default( cs );
|
|
|
|
// best axial normal
|
|
DoubleVector3 bestNormal = cs.fplane.normal();
|
|
const size_t axis = normal_make_axial( bestNormal );
|
|
|
|
float mindist = 999999;
|
|
|
|
for ( size_t i = 0; i < cs.fw.size(); ++i ) // planes
|
|
{
|
|
float bestdist = 999999, bestangle = 1;
|
|
const DoubleVector3 edge = VectorNormalized( winding_next_point( cs.fw, i ) - cs.fw[i] );
|
|
|
|
for ( size_t ax : { 0, 1, 2 } ) // try axes
|
|
{
|
|
Plane3 pln;
|
|
if ( ax == axis ){
|
|
pln.normal() = VectorNormalized( vector3_cross( bestNormal, edge ) );
|
|
}
|
|
else{
|
|
DoubleVector3 nrm( 0 );
|
|
if ( std::fabs( edge[ax] ) < .00025 )
|
|
continue;
|
|
nrm[ax] = edge[ax];
|
|
nrm = vector3_cross( bestNormal, nrm );
|
|
pln.normal() = VectorNormalized( vector3_cross( nrm, edge ) );
|
|
}
|
|
pln.dist() = vector3_dot( cs.fw[i], pln.normal() );
|
|
/* check facing, thickness */
|
|
// for winding > triangle this point is acceptable for plane choice, but is not very correct for limDepth (best is to actually intersect side planes)
|
|
const float currdist = -plane3_distance_to_point( pln, cs.fw[( i + 2 ) % cs.fw.size()] );
|
|
const float currangle = vector3_dot( pln.normal(), cs.fplane.normal() );
|
|
if ( ( ( currdist > 0.1 ) && ( currdist < bestdist ) && ( currangle < 0 ) ) ||
|
|
( ( currangle >= 0 ) && ( currangle <= bestangle ) ) ){
|
|
bestangle = currangle;
|
|
if ( currangle < 0 )
|
|
bestdist = currdist;
|
|
cs.splanes[i] = Plane3( pln );
|
|
}
|
|
}
|
|
if ( bestdist == 999999 && bestangle == 1 ){
|
|
// Sys_Printf( "default_CLIPMODEL\n" );
|
|
return clipModel_default( cs );
|
|
}
|
|
value_minimize( mindist, bestdist );
|
|
}
|
|
if ( ( limDepth != 0 ) && ( mindist > limDepth ) )
|
|
return clipModel_default( cs );
|
|
}
|
|
|
|
|
|
static bool windingMergeOthers( ClipWinding& win1st, std::vector<ClipWinding>& winSet ){
|
|
const size_t winSetSize = winSet.size();
|
|
|
|
for( auto win = winSet.crbegin(); win != winSet.crend(); ++win ){
|
|
// sorted spatial distance on X; break on minmax range overflow
|
|
if( win->minmax.mins.x() > win1st.minmax.maxs.x() + 1 )
|
|
break;
|
|
if( !win->minmax.test( win1st.minmax, 1 ) ) // minmax test
|
|
continue;
|
|
// points off plane
|
|
// const double epsilon = distanceEpsilon * 2;
|
|
const double epsilon = ON_EPSILON / 2;
|
|
if( std::ranges::any_of( win->points, [&]( const DoubleVector3& p ){
|
|
return std::fabs( plane3_distance_to_point( win1st.plane, p ) ) > epsilon;
|
|
} ) )
|
|
continue;
|
|
// rough normal check; catches inverted planes
|
|
if( !vector3_equal_epsilon( win1st.plane.normal(), win->plane.normal(), .1 ) )
|
|
continue;
|
|
// find matching points
|
|
winding_accu_t& w = win1st.points;
|
|
for( auto prev = w.cend() - 1, next = w.cbegin(); next != w.cend(); prev = next++ )
|
|
{
|
|
for( auto pre = win->points.cend() - 1, nex = win->points.cbegin(); nex != win->points.cend(); pre = nex++ )
|
|
{
|
|
if( VectorCompare( *prev, *nex ) && VectorCompare( *next, *pre ) ){ // source points are typically perfectly equal hence small epsilon
|
|
// if( vector3_equal_epsilon( *prev, *nex, ON_EPSILON ) && vector3_equal_epsilon( *next, *pre, ON_EPSILON ) ){
|
|
auto nnext = winding_next( w, next );
|
|
auto pprev = winding_prev( w, prev );
|
|
auto nnex = winding_next( win->points, nex );
|
|
auto ppre = winding_prev( win->points, pre );
|
|
// check if new point preserves convexity
|
|
Plane3 pplane( VectorNormalized( vector3_cross( win1st.plane.normal(), *nnex - *pprev ) ), 0 );
|
|
pplane.dist() = vector3_dot( pplane.normal(), *pprev );
|
|
Plane3 nplane( VectorNormalized( vector3_cross( win1st.plane.normal(), *nnext - *ppre ) ), 0 );
|
|
nplane.dist() = vector3_dot( nplane.normal(), *nnext );
|
|
double pd = plane3_distance_to_point( pplane, *prev );
|
|
double nd = plane3_distance_to_point( nplane, *next );
|
|
// insert
|
|
if( pd > -ON_EPSILON && nd > -ON_EPSILON ){
|
|
auto inserted = next;
|
|
for( auto ins = ppre; ins != nex; ins = winding_prev( win->points, ins ) )
|
|
inserted = w.insert( inserted, *ins );
|
|
// remove possible colinear points
|
|
auto iprev = winding_prev( w, inserted );
|
|
auto inext = inserted + win->points.size() - 2;
|
|
if( inext >= w.cend() )
|
|
inext -= w.size();
|
|
// remove higher iterator 1st to keep lower one valid
|
|
if( iprev > inext ){
|
|
std::swap( iprev, inext );
|
|
std::swap( pd, nd );
|
|
}
|
|
if( std::fabs( nd ) < ON_EPSILON )
|
|
w.erase( inext );
|
|
if( std::fabs( pd ) < ON_EPSILON && w.size() > 3 )
|
|
w.erase( iprev );
|
|
|
|
win1st.minmax.extend( win->minmax );
|
|
winSet.erase( ( ++win ).base() );
|
|
// inserted, restart the search
|
|
win = winSet.crbegin() - 1;
|
|
}
|
|
goto doNextWinding;
|
|
}
|
|
}
|
|
}
|
|
doNextWinding: continue;
|
|
}
|
|
|
|
return winSetSize != winSet.size();
|
|
}
|
|
|
|
// win1st.points is not necessarily planar convex polygon here (but it is, when projected along bestNormal)
|
|
static bool windingMergeConvex( ClipWinding& win1st, std::vector<ClipWinding>& winSet, const Vector3& bestNormal ){
|
|
const size_t winSetSize = winSet.size();
|
|
|
|
for( auto win = winSet.crbegin(); win != winSet.crend(); ++win ){
|
|
// sorted spatial distance on X; break on minmax range overflow
|
|
if( win->minmax.mins.x() > win1st.minmax.maxs.x() + 1 )
|
|
break;
|
|
if( !win->minmax.test( win1st.minmax, 1 ) ) // minmax test
|
|
continue;
|
|
if( win->isplanar()
|
|
? vector3_dot( win->plane.normal(), bestNormal ) < c_extrude_epsilon // triangle normal too off, can't clip with this extrusion direction
|
|
: win->bestNormal != bestNormal ) // winding merged with different bestNormal, may be non convex when merged with current
|
|
continue;
|
|
// check that win->frontWindings planes don't clip the volume
|
|
if( std::ranges::any_of( win1st.frontWindings, [win]( const ClipWinding& clipWinding ){
|
|
return std::ranges::any_of( clipWinding.points, [win]( const DoubleVector3& p ){
|
|
return std::ranges::any_of( win->frontWindings, [&p]( const ClipWinding& clipWinding ){
|
|
return plane3_distance_to_point( clipWinding.plane, p ) > ON_EPSILON;
|
|
} );
|
|
} );
|
|
} ) )
|
|
continue;
|
|
|
|
// find matching points
|
|
winding_accu_t& w = win1st.points;
|
|
for( auto prev = w.cend() - 1, next = w.cbegin(); next != w.cend(); prev = next++ )
|
|
{
|
|
for( auto pre = win->points.cend() - 1, nex = win->points.cbegin(); nex != win->points.cend(); pre = nex++ )
|
|
{
|
|
if( VectorCompare( *prev, *nex ) && VectorCompare( *next, *pre ) ){ // source points are typically perfectly equal hence small epsilon
|
|
// if( vector3_equal_epsilon( *prev, *nex, ON_EPSILON ) && vector3_equal_epsilon( *next, *pre, ON_EPSILON ) ){
|
|
auto nnext = winding_next( w, next );
|
|
auto pprev = winding_prev( w, prev );
|
|
auto nnex = winding_next( win->points, nex );
|
|
auto ppre = winding_prev( win->points, pre );
|
|
// check if new point preserves convexity
|
|
Plane3 pplane( VectorNormalized( vector3_cross( bestNormal, *nnex - *pprev ) ), 0 );
|
|
pplane.dist() = vector3_dot( pplane.normal(), *pprev );
|
|
Plane3 nplane( VectorNormalized( vector3_cross( bestNormal, *nnext - *ppre ) ), 0 );
|
|
nplane.dist() = vector3_dot( nplane.normal(), *nnext );
|
|
double pd = plane3_distance_to_point( pplane, *prev );
|
|
double nd = plane3_distance_to_point( nplane, *next );
|
|
// insert
|
|
if( pd > -ON_EPSILON && nd > -ON_EPSILON ){
|
|
auto inserted = next;
|
|
for( auto ins = ppre; ins != nex; ins = winding_prev( win->points, ins ) )
|
|
inserted = w.insert( inserted, *ins );
|
|
// remove possible colinear points
|
|
auto iprev = winding_prev( w, inserted );
|
|
auto inext = inserted + win->points.size() - 2;
|
|
if( inext >= w.cend() )
|
|
inext -= w.size();
|
|
// remove higher iterator 1st to keep lower one valid
|
|
if( iprev > inext ){
|
|
std::swap( iprev, inext );
|
|
std::swap( pd, nd );
|
|
}
|
|
if( std::fabs( nd ) < ON_EPSILON )
|
|
w.erase( inext );
|
|
if( std::fabs( pd ) < ON_EPSILON && w.size() > 3 )
|
|
w.erase( iprev );
|
|
|
|
win1st.minmax.extend( win->minmax );
|
|
for( const ClipWinding& cw : win->frontWindings )
|
|
win1st.frontWindings.push_back( std::move( cw ) );
|
|
winSet.erase( ( ++win ).base() );
|
|
// inserted, restart the search
|
|
win = winSet.crbegin() - 1;
|
|
}
|
|
goto doNextWinding;
|
|
}
|
|
}
|
|
}
|
|
doNextWinding: continue;
|
|
}
|
|
|
|
return winSetSize != winSet.size();
|
|
}
|
|
|
|
|
|
inline bool clipflags_doClip( const shaderInfo_t& si, const int spawnFlags ){
|
|
const int spf = ( spawnFlags & ( eClipFlags & ~eClipModel ) ); // w/e eClipModel flag, if others are set
|
|
|
|
const bool fineFlags =
|
|
( si.clipModel && spf == 0 ) // default CLIPMODEL
|
|
|| ( spawnFlags & eClipFlags ) == eClipModel // default CLIPMODEL
|
|
|| spf == ( ePyramidalClip )
|
|
|| spf == ( ePyramidalClip | eAxialBackplane ) // pyramid with 3 of 4 sides axial (->small bsp)
|
|
|| spf == ( eExtrudeFaceNormals )
|
|
|| spf == ( eExtrudeFaceNormals | ePyramidalClip ) // extrude 45
|
|
|| spf == ( eExtrudeTerrain ) // automatic axial direction
|
|
|| spf == ( eExtrudeDownwards )
|
|
|| spf == ( eExtrudeUpwards )
|
|
|| spf == ( eExtrudeDownwards | eExtrudeUpwards )
|
|
|| spf == ( eAxialBackplane ) // default sides + axial backplane
|
|
|| spf == ( eAxialBackplane | eExtrudeTerrain )
|
|
|| spf == ( eAxialBackplane | eExtrudeDownwards )
|
|
|| spf == ( eAxialBackplane | eExtrudeUpwards )
|
|
|| spf == ( eAxialBackplane | eExtrudeDownwards | eExtrudeUpwards )
|
|
|| spf == ( eMaxExtrude | eExtrudeTerrain )
|
|
|| spf == ( eMaxExtrude | eExtrudeDownwards )
|
|
|| spf == ( eMaxExtrude | eExtrudeUpwards )
|
|
|| spf == ( eMaxExtrude | eExtrudeDownwards | eExtrudeUpwards )
|
|
|| spf == ( eExtrudeVertexNormals )
|
|
|| spf == ( eExtrudeVertexNormals | ePyramidalClip ); // vertex normals + don't check for sides, sticking outwards
|
|
|
|
if( ( spawnFlags & eClipFlags ) && !fineFlags )
|
|
Sys_Warning( "nonexistent clipping mode selected\n" );
|
|
|
|
return ( ( si.compileFlags & C_SOLID ) || si.clipModel ) /* skip nonsolid */ && fineFlags;
|
|
}
|
|
|
|
|
|
/* ydnar: giant hack land: generate clipping brushes for model triangles */
|
|
static void ClipModel( const int spawnFlags, float clipDepth, ClipTriangles& clipTriangles, const char *modelName, entity_t& entity ){
|
|
const int spf = ( spawnFlags & ( eClipFlags & ~eClipModel ) ); // w/e eClipModel flag, if others are set
|
|
|
|
float limDepth = 0; // for all eAxialBackplane cases
|
|
if ( clipDepth < 0 ){
|
|
limDepth = -clipDepth;
|
|
clipDepth = 2.f;
|
|
}
|
|
|
|
if ( spf & ( eExtrudeTerrain | eMaxExtrude ) ){
|
|
for( auto& [ _, triSet ] : clipTriangles.triangleSets ){
|
|
for( const ClipWinding& tri : triSet )
|
|
{
|
|
clipTriangles.avgDirections[ tri.dsIdx ] += tri.plane.normal(); // calculate average mesh facing direction for eExtrudeTerrain
|
|
for( const DoubleVector3& p : tri.points ) // get mesh minmax for eMaxExtrude
|
|
clipTriangles.minmaxes[ tri.dsIdx ].extend( p );
|
|
}
|
|
}
|
|
// unify avg direction
|
|
for( Vector3& avgDirection : clipTriangles.avgDirections ){
|
|
if ( avgDirection == g_vector3_identity )
|
|
avgDirection = g_vector3_axis_z;
|
|
normal_make_axial( avgDirection );
|
|
}
|
|
}
|
|
|
|
const auto printWarning = [modelName]( const winding_accu_t& w ){
|
|
Sys_Warning( "triangle (%6.0f %6.0f %6.0f) (%6.0f %6.0f %6.0f) (%6.0f %6.0f %6.0f) of %s was not autoclipped\n",
|
|
w[0][0], w[0][1], w[0][2],
|
|
w[1][0], w[1][1], w[1][2],
|
|
w[2][0], w[2][1], w[2][2], modelName );
|
|
};
|
|
|
|
// mergable triangles support
|
|
if( ( /* si.clipModel && */ spf == 0 ) // default CLIPMODEL
|
|
|| ( spawnFlags & eClipFlags ) == eClipModel //default CLIPMODEL
|
|
|| spf == ( ePyramidalClip )
|
|
|| spf == ( ePyramidalClip | eAxialBackplane ) // pyramid with 3 of 4 sides axial (->small bsp)
|
|
|| spf == ( eExtrudeFaceNormals )
|
|
|| spf == ( eExtrudeFaceNormals | ePyramidalClip ) // extrude 45
|
|
|| spf == ( eExtrudeTerrain ) // extrusion direction control, normal backplane
|
|
|| spf == ( eExtrudeDownwards )
|
|
|| spf == ( eExtrudeUpwards )
|
|
|| spf == ( eExtrudeDownwards | eExtrudeUpwards )
|
|
){
|
|
//? consider MAX_BUILD_SIDES MAX_POINTS_ON_WINDING
|
|
for( auto& [ _, winSet ] : clipTriangles.triangleSets )
|
|
{
|
|
std::vector<ClipWinding> winSet2;
|
|
std::sort( winSet.begin(), winSet.end() );
|
|
bool somethingMerged = false;
|
|
while( !winSet.empty() || ( winSet.swap( winSet2 ), std::ranges::reverse( winSet ), std::exchange( somethingMerged, false ) ) )
|
|
{
|
|
ClipWinding& win = winSet2.emplace_back( std::move( winSet.back() ) );
|
|
winSet.pop_back();
|
|
somethingMerged |= windingMergeOthers( win, winSet );
|
|
}
|
|
|
|
for( ClipWinding& win : winSet )
|
|
{
|
|
ClipSides cs( *clipTriangles.modelSurfs[ win.dsIdx ]->shaderInfo, entity, clipDepth );
|
|
cs.fw.swap( win.points );
|
|
//% CheckWinding( CopyWindingAccuToRegular( cs.fw ) );
|
|
|
|
/* make plane for triangle */
|
|
if ( cs.construct() ) {
|
|
if ( ( /* si.clipModel && */ spf == 0 ) || ( spawnFlags & eClipFlags ) == eClipModel ){ // default CLIPMODEL
|
|
clipModel_default( cs );
|
|
}
|
|
else if ( spf == ( ePyramidalClip ) ){
|
|
clipModel_pyramidal( cs );
|
|
}
|
|
else if ( spf == ( ePyramidalClip | eAxialBackplane ) ){ // pyramid with 3 of 4 sides axial (->small bsp)
|
|
clipModel_axialPyramid( cs, limDepth );
|
|
}
|
|
else if ( spf == ( eExtrudeFaceNormals ) ){
|
|
clipModel_faceNormals( cs );
|
|
}
|
|
else if ( spf == ( eExtrudeFaceNormals | ePyramidalClip ) ){ // extrude 45
|
|
clipModel_45( cs );
|
|
}
|
|
else if ( spf == ( eExtrudeTerrain ) // extrusion direction control, normal backplane
|
|
|| spf == ( eExtrudeDownwards )
|
|
|| spf == ( eExtrudeUpwards )
|
|
|| spf == ( eExtrudeDownwards | eExtrudeUpwards ) ){
|
|
clipModel_terrain( cs, clipModel_terrain_bestNormal( spf, cs.fplane.normal(), clipTriangles.avgDirections[ win.dsIdx ] ) );
|
|
}
|
|
|
|
if ( cs.create_brush() ) {
|
|
continue; // success
|
|
}
|
|
}
|
|
printWarning( cs.fw );
|
|
}
|
|
}
|
|
}
|
|
// no mergable triangles support
|
|
else if ( spf == ( eExtrudeVertexNormals )
|
|
|| spf == ( eExtrudeVertexNormals | ePyramidalClip ) // vertex normals + don't check for sides, sticking outwards
|
|
){
|
|
for( mapDrawSurface_t *ds : clipTriangles.modelSurfs )
|
|
{
|
|
/* walk triangle list */
|
|
for ( auto idx = ds->indexes.cbegin(); idx != ds->indexes.cend(); idx += 3 )
|
|
{
|
|
ClipSides cs( *ds->shaderInfo, entity, clipDepth );
|
|
/* make points */
|
|
cs.fw.assign( { ds->verts[*( idx + 0 )].xyz,
|
|
ds->verts[*( idx + 1 )].xyz,
|
|
ds->verts[*( idx + 2 )].xyz } );
|
|
/* make plane for triangle */
|
|
if ( cs.construct() ) {
|
|
clipModel_vertexNormals( cs, { ds->verts[*( idx + 0 )].normal,
|
|
ds->verts[*( idx + 1 )].normal,
|
|
ds->verts[*( idx + 2 )].normal }, spf & ePyramidalClip );
|
|
if ( cs.create_brush() ) {
|
|
continue; // success
|
|
}
|
|
}
|
|
printWarning( cs.fw );
|
|
}
|
|
}
|
|
}
|
|
// volumetric merge support
|
|
else if ( spf == ( eAxialBackplane )
|
|
|| spf == ( eAxialBackplane | eExtrudeTerrain )
|
|
|| spf == ( eAxialBackplane | eExtrudeDownwards )
|
|
|| spf == ( eAxialBackplane | eExtrudeUpwards )
|
|
|| spf == ( eAxialBackplane | eExtrudeDownwards | eExtrudeUpwards )
|
|
|| spf == ( eMaxExtrude | eExtrudeTerrain )
|
|
|| spf == ( eMaxExtrude | eExtrudeDownwards )
|
|
|| spf == ( eMaxExtrude | eExtrudeUpwards )
|
|
|| spf == ( eMaxExtrude | eExtrudeDownwards | eExtrudeUpwards )
|
|
){
|
|
for( auto& [ _, winSet ] : clipTriangles.triangleSets )
|
|
{
|
|
// merge coplanars 1st
|
|
std::vector<ClipWinding> winSet2;
|
|
std::sort( winSet.begin(), winSet.end() );
|
|
bool somethingMerged = false;
|
|
while( !winSet.empty() || ( winSet.swap( winSet2 ), std::ranges::reverse( winSet ), std::exchange( somethingMerged, false ) ) )
|
|
{
|
|
ClipWinding& win = winSet2.emplace_back( std::move( winSet.back() ) );
|
|
winSet.pop_back();
|
|
somethingMerged |= windingMergeOthers( win, winSet );
|
|
}
|
|
|
|
// process non clippable with choosen bestNormal
|
|
std::erase_if( winSet, [&]( ClipWinding& win ){
|
|
win.bestNormal = clipModel_terrain_bestNormal( spf, win.plane.normal(), clipTriangles.avgDirections[ win.dsIdx ] );
|
|
if ( vector3_dot( win.plane.normal(), win.bestNormal ) < c_extrude_epsilon ){ // can't clip with this bestNormal, fallback
|
|
ClipSides cs( *clipTriangles.modelSurfs[ win.dsIdx ]->shaderInfo, entity, clipDepth );
|
|
cs.fw.swap( win.points );
|
|
|
|
if ( cs.construct() ) {
|
|
clipModel_default( cs );
|
|
|
|
if ( cs.create_brush() ) {
|
|
return true; // success, erase
|
|
}
|
|
}
|
|
printWarning( cs.fw );
|
|
return true; // erase
|
|
}
|
|
else{ // otherwise copy self to .frontWindings for volumetric merge
|
|
win.frontWindings.push_back( win );
|
|
return false; // keep
|
|
}
|
|
} );
|
|
|
|
// volumetric merge
|
|
while( !winSet.empty() || ( winSet.swap( winSet2 ), std::ranges::reverse( winSet ), std::exchange( somethingMerged, false ) ) )
|
|
{
|
|
ClipWinding& win = winSet2.emplace_back( std::move( winSet.back() ) );
|
|
winSet.pop_back();
|
|
somethingMerged |= windingMergeConvex( win, winSet, win.bestNormal );
|
|
}
|
|
|
|
for( ClipWinding& win : winSet )
|
|
{
|
|
ClipSides cs( *clipTriangles.modelSurfs[ win.dsIdx ]->shaderInfo, entity, clipDepth );
|
|
cs.fw.swap( win.points );
|
|
|
|
// accumulate minmaxes for eMaxExtrude
|
|
MinMax minmax;
|
|
for( ClipWinding& w : win.frontWindings )
|
|
minmax.extend( clipTriangles.minmaxes[ w.dsIdx ] );
|
|
|
|
/* make plane for triangle */
|
|
if ( win.isplanar()? cs.construct() : cs.construct_volumetric( win.frontWindings ) ) {
|
|
|
|
clipModel_terrainSpecialBack( cs, spf, win.bestNormal, minmax, limDepth );
|
|
|
|
if ( win.isplanar()? cs.create_brush() : cs.create_volumetric_brush( win.frontWindings ) ) {
|
|
continue; // success
|
|
}
|
|
}
|
|
printWarning( cs.fw );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
InsertModel() - ydnar
|
|
adds a picomodel into the bsp
|
|
*/
|
|
|
|
void InsertModel( const char *name, const char *skin, int frame, const Matrix4& transform, const std::list<remap_t> *remaps,
|
|
entity_t& entity, int spawnFlags, float clipDepth, const EntityCompileParams& params ){
|
|
|
|
const Matrix4 nTransform( matrix4_for_normal_transform( transform ) );
|
|
const bool transform_lefthanded = MATRIX4_LEFTHANDED == matrix4_handedness( transform );
|
|
AssModel *model;
|
|
const char *picoShaderName;
|
|
|
|
|
|
/* get model */
|
|
model = LoadModel( name, frame );
|
|
if ( model == nullptr ) {
|
|
return;
|
|
}
|
|
|
|
/* load skin file */
|
|
std::list<remap_t> skins;
|
|
if( !strEmptyOrNull( skin ) ){
|
|
const bool isnumber = std::all_of( skin, skin + strlen( skin ), ::isdigit );
|
|
|
|
StringOutputStream skinfilename( 99 );
|
|
if( isnumber )
|
|
skinfilename( name, '_', skin, ".skin" ); // DarkPlaces naming: models/relics/relic.md3_14.skin for models/relics/relic.md3
|
|
else
|
|
skinfilename( PathExtensionless( name ), '_', skin, ".skin" ); // Q3 naming: models/players/sarge/head_roderic.skin for models/players/sarge/head.md3
|
|
|
|
if ( MemBuffer skinfile = vfsLoadFile( skinfilename ) ) {
|
|
Sys_Printf( "Using skin %s of %s\n", skin, name );
|
|
for ( char *skinfilenextptr, *skinfileptr = skinfile.data(); !strEmpty( skinfileptr ); skinfileptr = skinfilenextptr )
|
|
{
|
|
// for sscanf
|
|
char format[64];
|
|
|
|
skinfilenextptr = strchr( skinfileptr, '\r' );
|
|
if ( skinfilenextptr != nullptr ) {
|
|
strClear( skinfilenextptr++ );
|
|
if( *skinfilenextptr == '\n' ) // handle \r\n
|
|
++skinfilenextptr;
|
|
}
|
|
else
|
|
{
|
|
skinfilenextptr = strchr( skinfileptr, '\n' );
|
|
if ( skinfilenextptr != nullptr ) {
|
|
strClear( skinfilenextptr++ );
|
|
}
|
|
else{
|
|
skinfilenextptr = skinfileptr + strlen( skinfileptr );
|
|
}
|
|
}
|
|
|
|
/* create new item */
|
|
remap_t skin;
|
|
|
|
sprintf( format, "replace %%%ds %%%ds", (int)sizeof( skin.from ) - 1, (int)sizeof( skin.to ) - 1 );
|
|
if ( sscanf( skinfileptr, format, skin.from, skin.to ) == 2 ) {
|
|
skins.push_back( skin );
|
|
continue;
|
|
}
|
|
sprintf( format, " %%%d[^, ] ,%%%ds", (int)sizeof( skin.from ) - 1, (int)sizeof( skin.to ) - 1 );
|
|
if ( sscanf( skinfileptr, format, skin.from, skin.to ) == 2 ) {
|
|
skins.push_back( skin );
|
|
continue;
|
|
}
|
|
|
|
/* invalid input line -> discard skin struct */
|
|
Sys_Printf( "Discarding skin directive in %s: %s\n", skinfilename.c_str(), skinfileptr );
|
|
}
|
|
}
|
|
}
|
|
|
|
ClipTriangles clipTriangles( model->m_meshes.size() );
|
|
/* each surface on the model will become a new map drawsurface */
|
|
//% Sys_FPrintf( SYS_VRB, "Model %s has %d surfaces\n", name, numSurfaces );
|
|
for ( const auto& surface : model->m_meshes )
|
|
{
|
|
const aiMesh *mesh = surface.m_mesh;
|
|
/* only handle triangle surfaces initially (fixme: support patches) */
|
|
|
|
/* get shader name */
|
|
picoShaderName = surface.m_shader.c_str();
|
|
|
|
/* handle .skin file */
|
|
if ( !skins.empty() ) {
|
|
picoShaderName = nullptr;
|
|
for( const auto& skin : skins )
|
|
{
|
|
if ( striEqual( surface.m_shader.c_str(), skin.from ) ) {
|
|
Sys_FPrintf( SYS_VRB, "Skin file: mapping %s to %s\n", surface.m_shader.c_str(), skin.to );
|
|
picoShaderName = skin.to;
|
|
break;
|
|
}
|
|
}
|
|
if ( picoShaderName == nullptr ) {
|
|
Sys_FPrintf( SYS_VRB, "Skin file: not mapping %s\n", surface.m_shader.c_str() );
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/* handle shader remapping */
|
|
if( remaps != nullptr ){
|
|
const char* to = nullptr;
|
|
size_t fromlen = 0;
|
|
for( const auto& rm : *remaps )
|
|
{
|
|
if ( strEqual( rm.from, "*" ) && fromlen == 0 ) { // only globbing, if no respective match
|
|
to = rm.to;
|
|
}
|
|
else if( striEqualSuffix( picoShaderName, rm.from ) && strlen( rm.from ) > fromlen ){ // longer match has priority
|
|
to = rm.to;
|
|
fromlen = strlen( rm.from );
|
|
}
|
|
}
|
|
if( to != nullptr ){
|
|
Sys_FPrintf( SYS_VRB, ( fromlen == 0? "Globbing '%s' to '%s'\n" : "Remapping '%s' to '%s'\n" ), picoShaderName, to );
|
|
picoShaderName = to;
|
|
}
|
|
}
|
|
|
|
/* shader renaming for sof2 */
|
|
shaderInfo_t& si = renameModelShaders
|
|
? ShaderInfoForShader( String64( PathExtensionless( picoShaderName ), ( spawnFlags & eRMG_BSP )? "_RMG_BSP" : "_BSP" ) )
|
|
: ShaderInfoForShader( picoShaderName );
|
|
|
|
/* allocate a surface (ydnar: gs mods) */
|
|
mapDrawSurface_t& ds = AllocDrawSurface( ESurfaceType::Triangles, si );
|
|
ds.entityNum = entity.mapEntityNum;
|
|
ds.castShadows = params.castShadows;
|
|
ds.recvShadows = params.recvShadows;
|
|
ds.celShader = params.celShader;
|
|
ds.ambientColor = params.ambientColor;
|
|
|
|
/* force to meta? */
|
|
if ( si.forceMeta || ( spawnFlags & eForceMeta ) ) { /* 3rd bit */
|
|
ds.type = ESurfaceType::ForcedMeta;
|
|
}
|
|
|
|
/* fix the surface's normals (jal: conditioned by shader info) */
|
|
if ( !( spawnFlags & eNoSmooth ) && ( params.shadeAngle == 0 || ds.type != ESurfaceType::ForcedMeta ) ) {
|
|
// PicoFixSurfaceNormals( surface );
|
|
}
|
|
|
|
/* set sample size */
|
|
if ( params.lightmapSampleSize > 0 ) {
|
|
ds.sampleSize = params.lightmapSampleSize;
|
|
}
|
|
|
|
/* set lightmap scale */
|
|
if ( params.lightmapScale > 0 ) {
|
|
ds.lightmapScale = params.lightmapScale;
|
|
}
|
|
|
|
/* set shading angle */
|
|
if ( params.shadeAngle > 0 ) {
|
|
ds.shadeAngleDegrees = params.shadeAngle;
|
|
}
|
|
|
|
/* set particulars */
|
|
ds.verts.resize( mesh->mNumVertices, c_bspDrawVert_t0 );
|
|
ds.indexes.resize( mesh->mNumFaces * 3 );
|
|
// Sys_Printf( "verts %zu idx %zu\n", ds.verts.size(), ds.indexes.size() );
|
|
/* copy vertexes */
|
|
for ( size_t i = 0; i < ds.verts.size(); ++i )
|
|
{
|
|
/* get vertex */
|
|
bspDrawVert_t& dv = ds.verts[ i ];
|
|
|
|
/* xyz and normal */
|
|
dv.xyz = { mesh->mVertices[i].x, mesh->mVertices[i].y, mesh->mVertices[i].z };
|
|
matrix4_transform_point( transform, dv.xyz );
|
|
|
|
if( mesh->HasNormals() ){
|
|
dv.normal = { mesh->mNormals[i].x, mesh->mNormals[i].y, mesh->mNormals[i].z };
|
|
matrix4_transform_direction( nTransform, dv.normal );
|
|
VectorNormalize( dv.normal );
|
|
}
|
|
|
|
/* ydnar: tek-fu celshading support for flat shaded shit */
|
|
if ( flat ) {
|
|
dv.st = si.stFlat;
|
|
}
|
|
|
|
/* ydnar: gs mods: added support for explicit shader texcoord generation */
|
|
else if ( si.tcGen ) {
|
|
/* project the texture */
|
|
dv.st[ 0 ] = vector3_dot( si.vecs[ 0 ], dv.xyz );
|
|
dv.st[ 1 ] = vector3_dot( si.vecs[ 1 ], dv.xyz );
|
|
}
|
|
|
|
/* normal texture coordinates */
|
|
else
|
|
{
|
|
if( mesh->HasTextureCoords( 0 ) )
|
|
dv.st = { mesh->mTextureCoords[0][i].x, mesh->mTextureCoords[0][i].y };
|
|
}
|
|
|
|
/* set lightmap/color bits */
|
|
{
|
|
const aiColor4D color = mesh->HasVertexColors( 0 )? mesh->mColors[0][i] : aiColor4D( 1 );
|
|
if ( spawnFlags & eColorToAlpha ) { // spawnflag 32: model color -> alpha hack
|
|
dv.color[ 0 ] = { 255, 255, 255, color_to_byte( RGBTOGRAY( color ) * 255 ) };
|
|
}
|
|
else
|
|
{
|
|
dv.color[ 0 ] = { color_to_byte( color[0] * 255 ),
|
|
color_to_byte( color[1] * 255 ),
|
|
color_to_byte( color[2] * 255 ),
|
|
color_to_byte( color[3] * 255 ) };
|
|
}
|
|
dv.color[ 1 ] = dv.color[ 2 ] = dv.color[ 3 ] = dv.color[ 0 ];
|
|
}
|
|
}
|
|
|
|
/* copy indexes */
|
|
for ( size_t idCopied = 0; const aiFace& face : Span( mesh->mFaces, mesh->mNumFaces ) ){
|
|
// if( face.mNumIndices == 3 )
|
|
for ( size_t i = 0; i < 3; ++i ){
|
|
ds.indexes[idCopied++] = face.mIndices[i];
|
|
}
|
|
if( transform_lefthanded ){
|
|
std::swap( ds.indexes[idCopied - 1], ds.indexes[idCopied - 2] );
|
|
}
|
|
}
|
|
|
|
if( clipflags_doClip( si, spawnFlags) ){
|
|
auto& triangles = clipTriangles.triangleSets[ std::tuple{ ds.shaderInfo->surfaceFlags,
|
|
ds.shaderInfo->contentFlags,
|
|
ds.shaderInfo->compileFlags } ];
|
|
for ( const aiFace& face : Span( mesh->mFaces, mesh->mNumFaces ) )
|
|
{
|
|
winding_accu_t points( 3 );
|
|
for( size_t i = 0; i < 3; ++i ){
|
|
auto& v = mesh->mVertices[face.mIndices[i]];
|
|
points[i] = matrix4_transformed_point( transform, DoubleVector3( v.x, v.y, v.z ) );
|
|
}
|
|
if( transform_lefthanded ){
|
|
std::swap( points[1], points[2] );
|
|
}
|
|
if ( Plane3 plane; PlaneFromPoints( plane, points.data() ) ){
|
|
triangles.push_back( ClipWinding( plane, std::move( points ), clipTriangles.modelSurfs.size() ) );
|
|
}
|
|
}
|
|
clipTriangles.modelSurfs.push_back( &ds );
|
|
}
|
|
}
|
|
|
|
ClipModel( spawnFlags, clipDepth, clipTriangles, name, entity );
|
|
}
|
|
|
|
|
|
Matrix4 ModelGetTransform( const entity_t& e, const Vector3& parent_origin /* = g_vector3_identity */ ){
|
|
/* get origin */
|
|
const Vector3 origin = e.vectorForKey( "origin" ) - parent_origin; /* offset by parent, it will be added ingame */
|
|
|
|
/* get scale */
|
|
Vector3 scale( 1 );
|
|
if( !e.read_keyvalue( scale, "modelscale_vec" ) )
|
|
if( e.read_keyvalue( scale[0], "modelscale" ) )
|
|
scale[1] = scale[2] = scale[0];
|
|
|
|
/* get "angle" (yaw) or "angles" (pitch yaw roll), store as (roll pitch yaw) */
|
|
Vector3 angles( 0 );
|
|
if ( e.read_keyvalue( angles, "angles" ) || e.read_keyvalue( angles.y(), "angle" ) )
|
|
angles = angles_pyr2rpy( angles );
|
|
|
|
/* set transform matrix (thanks spog) */
|
|
Matrix4 transform( g_matrix4_identity );
|
|
matrix4_transform_by_euler_xyz_degrees( transform, origin, angles, scale );
|
|
return transform;
|
|
}
|
|
|
|
|
|
/*
|
|
AddTriangleModels()
|
|
adds misc_model surfaces to the bsp
|
|
*/
|
|
|
|
void AddTriangleModels( entity_t& eparent ){
|
|
/* note it */
|
|
Sys_FPrintf( SYS_VRB, "--- AddTriangleModels ---\n" );
|
|
|
|
/* get current brush entity targetname */
|
|
const char *targetName;
|
|
if ( &eparent == &entities[0] ) {
|
|
targetName = "";
|
|
}
|
|
else{ /* misc_model entities target non-worldspawn brush model entities */
|
|
if ( !eparent.read_keyvalue( targetName, "_targetname", "targetname" ) ) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* walk the entity list */
|
|
for ( std::size_t i = 1; i < entities.size(); ++i )
|
|
{
|
|
/* get entity */
|
|
const entity_t& e = entities[ i ];
|
|
|
|
/* convert misc_models into raw geometry */
|
|
if ( !e.classname_is( "misc_model" ) ) {
|
|
continue;
|
|
}
|
|
|
|
/* ydnar: added support for md3 models on non-worldspawn models */
|
|
if ( const char *target = ""; e.read_keyvalue( target, "_target", "target" ), !strEqual( target, targetName ) ) {
|
|
continue;
|
|
}
|
|
|
|
/* get model name */
|
|
const char *model;
|
|
if ( !e.read_keyvalue( model, "model" ) ) {
|
|
Sys_Warning( "entity#%d misc_model without a model key\n", e.mapEntityNum );
|
|
continue;
|
|
}
|
|
|
|
/* get model frame */
|
|
const int frame = e.intForKey( "_frame", "frame" );
|
|
|
|
/* get spawnflags */
|
|
const int spawnFlags = e.intForKey( "spawnflags" );
|
|
|
|
/* get shader remappings */
|
|
std::list<remap_t> remaps;
|
|
for ( const auto& ep : e.epairs )
|
|
{
|
|
/* look for keys prefixed with "_remap" */
|
|
if ( striEqualPrefix( ep.key.c_str(), "_remap" ) ) {
|
|
/* create new remapping */
|
|
remap_t remap;
|
|
strcpy( remap.from, ep.value.c_str() );
|
|
|
|
/* split the string */
|
|
char *split = strchr( remap.from, ';' );
|
|
if ( split == nullptr ) {
|
|
Sys_Warning( "Shader _remap key found in misc_model without a ; character: '%s'\n", remap.from );
|
|
continue;
|
|
}
|
|
else if( split == remap.from ){
|
|
Sys_Warning( "_remap FROM is empty in '%s'\n", remap.from );
|
|
continue;
|
|
}
|
|
else if( strEmpty( split + 1 ) ){
|
|
Sys_Warning( "_remap TO is empty in '%s'\n", remap.from );
|
|
continue;
|
|
}
|
|
else if( strlen( split + 1 ) >= sizeof( remap.to ) ){
|
|
Sys_Warning( "_remap TO is too long in '%s'\n", remap.from );
|
|
continue;
|
|
}
|
|
|
|
/* store the split */
|
|
strClear( split );
|
|
strcpy( remap.to, ( split + 1 ) );
|
|
remaps.push_back( remap );
|
|
|
|
/* note it */
|
|
//% Sys_FPrintf( SYS_VRB, "Remapping %s to %s\n", remap->from, remap->to );
|
|
}
|
|
}
|
|
|
|
const char *skin = nullptr;
|
|
e.read_keyvalue( skin, "_skin", "skin" );
|
|
|
|
float clipDepth = clipDepthGlobal;
|
|
if ( e.read_keyvalue( clipDepth, "_clipdepth" ) )
|
|
Sys_Printf( "misc_model %s has autoclip depth of %.3f\n", model, clipDepth );
|
|
|
|
const EntityCompileParams params = ParseEntityCompileParams( e, &eparent, &eparent == &entities[ 0 ] );
|
|
|
|
/* insert the model */
|
|
InsertModel( model, skin, frame, ModelGetTransform( e, eparent.origin ), &remaps, eparent, spawnFlags, clipDepth, params );
|
|
}
|
|
}
|