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369 lines
15 KiB
C++
369 lines
15 KiB
C++
/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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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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#pragma once
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#include "selection_.h"
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#include "grid.h"
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/// \brief snaps changed axes of \p move so that \p bounds stick to closest grid lines.
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inline void aabb_snap_translation( Vector3& move, const AABB& bounds ){
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const Vector3 maxs( bounds.origin + bounds.extents );
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const Vector3 mins( bounds.origin - bounds.extents );
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// globalOutputStream() << "move: " << move << '\n';
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for( std::size_t i = 0; i < 3; ++i ){
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if( std::fabs( move[i] ) > 1e-2f ){
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const float snapto1 = float_snapped( maxs[i] + move[i], GetSnapGridSize() );
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const float snapto2 = float_snapped( mins[i] + move[i], GetSnapGridSize() );
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const float dist1 = std::fabs( std::fabs( maxs[i] + move[i] ) - std::fabs( snapto1 ) );
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const float dist2 = std::fabs( std::fabs( mins[i] + move[i] ) - std::fabs( snapto2 ) );
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// globalOutputStream() << "maxs[i] + move[i]: " << maxs[i] + move[i] << " snapto1: " << snapto1 << " dist1: " << dist1 << '\n';
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// globalOutputStream() << "mins[i] + move[i]: " << mins[i] + move[i] << " snapto2: " << snapto2 << " dist2: " << dist2 << '\n';
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move[i] = dist2 > dist1 ? snapto1 - maxs[i] : snapto2 - mins[i];
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}
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}
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}
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class TranslateAxis : public Manipulatable
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{
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Vector3 m_start;
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Vector3 m_axis;
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Translatable& m_translatable;
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AABB m_bounds;
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public:
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TranslateAxis( Translatable& translatable )
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: m_translatable( translatable ){
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}
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void Construct( const Matrix4& device2manip, const DeviceVector device_point, const AABB& bounds, const Vector3& transform_origin ) override {
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m_start = point_on_axis( m_axis, device2manip, device_point );
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m_bounds = bounds;
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}
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void Transform( const Matrix4& manip2object, const Matrix4& device2manip, const DeviceVector device_point ) override {
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Vector3 current = point_on_axis( m_axis, device2manip, device_point );
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current = vector3_scaled( m_axis, distance_for_axis( m_start, current, m_axis ) );
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current = translation_local2object( current, manip2object );
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if( g_modifiers.ctrl() )
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aabb_snap_translation( current, m_bounds );
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else
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vector3_snap( current, GetSnapGridSize() );
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m_translatable.translate( current );
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}
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void SetAxis( const Vector3& axis ){
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m_axis = axis;
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}
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};
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class TranslateAxis2 : public Manipulatable
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{
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Vector3 m_0;
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Plane3 m_planeSelected;
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std::size_t m_axisZ;
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Plane3 m_planeZ;
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Vector3 m_startZ;
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Translatable& m_translatable;
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AABB m_bounds;
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public:
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TranslateAxis2( Translatable& translatable )
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: m_translatable( translatable ){
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}
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void Construct( const Matrix4& device2manip, const DeviceVector device_point, const AABB& bounds, const Vector3& transform_origin ) override {
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m_axisZ = vector3_max_abs_component_index( m_planeSelected.normal() );
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Vector3 xydir( m_view->getViewer() - m_0 );
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xydir[m_axisZ] = 0;
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vector3_normalise( xydir );
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m_planeZ = Plane3( xydir, vector3_dot( xydir, m_0 ) );
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m_startZ = point_on_plane( m_planeZ, m_view->GetViewMatrix(), device_point );
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m_bounds = bounds;
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}
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void Transform( const Matrix4& manip2object, const Matrix4& device2manip, const DeviceVector device_point ) override {
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Vector3 current = g_vector3_axes[m_axisZ] * vector3_dot( m_planeSelected.normal(), ( point_on_plane( m_planeZ, m_view->GetViewMatrix(), device_point ) - m_startZ ) )
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* ( m_planeSelected.normal()[m_axisZ] >= 0? 1 : -1 );
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if( !std::isfinite( current[0] ) || !std::isfinite( current[1] ) || !std::isfinite( current[2] ) ) // catch INF case, is likely with top of the box in 2D
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return;
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if( g_modifiers.ctrl() )
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aabb_snap_translation( current, m_bounds );
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else
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vector3_snap( current, GetSnapGridSize() );
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m_translatable.translate( current );
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}
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void set0( const Vector3& start, const Plane3& planeSelected ){
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m_0 = start;
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m_planeSelected = planeSelected;
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}
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};
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class TranslateFree : public Manipulatable
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{
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Vector3 m_start;
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Translatable& m_translatable;
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AABB m_bounds;
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public:
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TranslateFree( Translatable& translatable )
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: m_translatable( translatable ){
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}
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void Construct( const Matrix4& device2manip, const DeviceVector device_point, const AABB& bounds, const Vector3& transform_origin ) override {
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m_start = point_on_plane( device2manip, device_point );
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m_bounds = bounds;
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}
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void Transform( const Matrix4& manip2object, const Matrix4& device2manip, const DeviceVector device_point ) override {
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Vector3 current = point_on_plane( device2manip, device_point );
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current = vector3_subtracted( current, m_start );
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if( g_modifiers.shift() ) // snap to axis
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current *= g_vector3_axes[vector3_max_abs_component_index( current )];
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current = translation_local2object( current, manip2object );
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if( g_modifiers.ctrl() ) // snap aabb
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aabb_snap_translation( current, m_bounds );
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else
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vector3_snap( current, GetSnapGridSize() );
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m_translatable.translate( current );
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}
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};
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/// \brief constructs Quaternion so that rotated box geometry ends up aligned to one or more axes (depends on how much axial \p to is).
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inline Quaternion quaternion_for_unit_vectors_for_bounds( const Vector3& axialfrom, const Vector3& to ){
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// do step by step from the larger component to the smaller one
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size_t ids[3] = { vector3_max_abs_component_index( to ), ( ids[0] + 1 ) %3, ( ids[0] + 2 ) %3 };
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if( std::fabs( to[ids[2]] ) > std::fabs( to[ids[1]] ) )
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std::swap( ids[2], ids[1] );
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Vector3 steps[3] = { g_vector3_axes[ids[0]] * std::copysign( 1.f, to[ids[0]] ), to, to };
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Quaternion rotation = quaternion_for_unit_vectors_safe( axialfrom, steps[0] );
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if( std::fabs( to[ids[1]] ) > 1e-6f ){
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steps[1][ids[2]] = 0;
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vector3_normalise( steps[1] );
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rotation = quaternion_multiplied_by_quaternion( quaternion_for_unit_vectors( steps[0], steps[1] ), rotation );
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if( std::fabs( to[ids[2]] ) > 1e-6f ){
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rotation = quaternion_multiplied_by_quaternion( quaternion_for_unit_vectors( steps[1], to ), rotation );
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}
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}
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return rotation;
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}
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#include <optional>
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struct testSelect_unselected_scene_point_return_t{ DoubleVector3 point; std::optional<Plane3> plane; };
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std::optional<testSelect_unselected_scene_point_return_t>
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testSelect_unselected_scene_point( const View& view, const DeviceVector device_point, const DeviceVector device_epsilon );
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void Scene_BoundsSelected_withEntityBounds( scene::Graph& graph, AABB& bounds );
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inline std::optional<Vector3> AABB_TestPoint( const View& view, const DeviceVector device_point, const DeviceVector device_epsilon, const AABB& aabb ){
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View scissored( view );
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ConstructSelectionTest( scissored, SelectionBoxForPoint( device_point, device_epsilon ) );
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SelectionIntersection best;
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AABB_BestPoint( scissored.GetViewMatrix(), EClipCull::CW, aabb, best );
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if( best.valid() ){
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return vector4_projected( matrix4_transformed_vector4( matrix4_full_inverse( scissored.GetViewMatrix() ), Vector4( 0, 0, best.depth(), 1 ) ) );
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}
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return {};
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}
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class SnapBounds : public Manipulatable
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{
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Translatable& m_translatable;
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AllTransformable& m_transformable;
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AABB m_bounds;
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Vector3 m_0;
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// rotate-snap axis and sign of aabb
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size_t m_roatateAxis = 0;
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int m_rotateSign = 1;
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std::optional<Plane3> m_along_plane;
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Vector3 m_along_plane_start_point;
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public:
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SnapBounds( Translatable& translatable, AllTransformable& transformable )
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: m_translatable( translatable ), m_transformable( transformable ){
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}
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void Construct( const Matrix4& device2manip, const DeviceVector device_point, const AABB& bounds, const Vector3& transform_origin ) override {
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if( GlobalSelectionSystem().Mode() == SelectionSystem::ePrimitive )
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Scene_BoundsSelected_withEntityBounds( GlobalSceneGraph(), m_bounds );
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else
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m_bounds = bounds;
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// for rotate-snap deduce aabb side opposite to clicked
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if( const auto point = AABB_TestPoint( *m_view, device_point, m_device_epsilon, m_bounds ) ){
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m_0 = point.value(); // original m_0 is less reliable fallback
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}
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m_roatateAxis = 0;
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m_rotateSign = 1;
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float bestDist = FLT_MAX;
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for( size_t axis : { 0, 1, 2 } )
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for( int sign : { -1, 1 } )
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if( const float dist = std::fabs( m_0[axis] - ( m_bounds.origin[axis] + std::copysign( m_bounds.extents[axis], sign ) ) ); dist < bestDist ){
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bestDist = dist;
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m_roatateAxis = axis;
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m_rotateSign = sign;
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}
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m_along_plane.reset();
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}
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void Transform( const Matrix4& manip2object, const Matrix4& device2manip, const DeviceVector device_point ) override {
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Vector3 current( g_vector3_identity );
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if( g_modifiers.shift() ){ // move along plane
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if( !m_along_plane ){ // try to initialize plane from original cursor position
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if( const auto test = testSelect_unselected_scene_point( *m_view, m_device_point, m_device_epsilon );
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test && test->plane ){
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m_along_plane = test->plane;
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m_along_plane_start_point = point_on_plane( *m_along_plane, m_view->GetViewMatrix(), m_device_point );
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}
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else if( const auto test = testSelect_unselected_scene_point( *m_view, device_point, m_device_epsilon );
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test && test->plane ){ // init cursor pos was not on plane, try to fallback to current pos
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m_along_plane = test->plane;
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m_along_plane_start_point = point_on_plane( *m_along_plane, m_view->GetViewMatrix(), device_point );
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}
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}
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if( m_along_plane ){ // got plane, lez go
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current = point_on_plane( *m_along_plane, m_view->GetViewMatrix(), device_point ) - m_along_plane_start_point;
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const size_t maxi = vector3_max_abs_component_index( m_along_plane->normal() );
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vector3_snap( current, GetSnapGridSize() );
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// snap move on two axes with least normal component -> need to find out 3rd move component
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// it equals to point snap to plane with dist=0
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// normal.dot( snapped move ) = 0
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current[maxi] = -( m_along_plane->normal()[( maxi + 1 ) % 3] * current[( maxi + 1 ) % 3]
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+ m_along_plane->normal()[( maxi + 2 ) % 3] * current[( maxi + 2 ) % 3] )
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/ m_along_plane->normal()[maxi];
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return m_translatable.translate( current );
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}
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}
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else if( const auto test = testSelect_unselected_scene_point( *m_view, device_point, m_device_epsilon ) ){
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const auto choose_aabb_corner = []( const AABB& bounds, const size_t axis, const Vector3& nrm, const Vector3& ray ){
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Vector3 extents = bounds.extents;
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extents[axis] = std::copysign( extents[axis], nrm[axis] );
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extents[( axis + 1 ) % 3] = std::copysign( extents[( axis + 1 ) % 3], ray[( axis + 1 ) % 3] );
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extents[( axis + 2 ) % 3] = std::copysign( extents[( axis + 2 ) % 3], ray[( axis + 2 ) % 3] );
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return bounds.origin - extents;
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};
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const Ray ray = ray_for_device_point( matrix4_full_inverse( m_view->GetViewMatrix() ), device_point );
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const Vector3 nrm = test->plane? Vector3( test->plane->normal() ) : -ray.direction;
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if( g_modifiers.alt() ){ // rotate-snap
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const Quaternion rotation = quaternion_for_unit_vectors_for_bounds( g_vector3_axes[m_roatateAxis] * m_rotateSign, nrm );
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const Matrix4 unrot = matrix4_rotation_for_quaternion( quaternion_inverse( rotation ) );
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const Vector3 unray = matrix4_transformed_direction( unrot,
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test->plane
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? ray.direction
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// when test point has no plane data we rotate exactly to test ray... tweak ray to deduce distinct aabb corner
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: ray_for_device_point( matrix4_full_inverse( m_view->GetViewMatrix() ), device_point * 1.1f ).direction );
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const Vector3 corner = choose_aabb_corner( m_bounds, m_roatateAxis, -unray, unray );
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Transforms transforms;
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transforms.setRotation( rotation );
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transforms.setTranslation( test->point - corner );
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return m_transformable.alltransform( transforms, corner );
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}
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else{ // move-snap
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const std::size_t axis = vector3_max_abs_component_index( nrm ); // snap bbox along this axis
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current = test->point - choose_aabb_corner( m_bounds, axis, nrm, ray.direction );
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return m_translatable.translate( current );
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}
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}
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m_translatable.translate( current ); // fallback to move to original position
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}
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void set0( const Vector3& start ){
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m_0 = start;
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}
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static bool useCondition( const ModifierFlagsExt& modifiers, const View& view ){
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return modifiers.ctrl() && view.fill();
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}
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};
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class TranslateFreeXY_Z : public Manipulatable
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{
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Vector3 m_0;
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std::size_t m_axisZ;
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Plane3 m_planeXY;
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Plane3 m_planeZ;
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Vector3 m_startXY;
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Vector3 m_startZ;
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Translatable& m_translatable;
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AABB m_bounds;
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SnapBounds m_snapBounds;
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public:
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inline static int m_viewdependent = 0;
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TranslateFreeXY_Z( Translatable& translatable, AllTransformable& transformable )
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: m_translatable( translatable ), m_snapBounds( translatable, transformable ){
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}
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void Construct( const Matrix4& device2manip, const DeviceVector device_point, const AABB& bounds, const Vector3& transform_origin ) override {
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m_axisZ = ( m_viewdependent || !m_view->fill() )? vector3_max_abs_component_index( m_view->getViewDir() ) : 2;
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if( m_0 == g_vector3_identity ) /* special value to indicate missing good point to start with, i.e. while dragging components by clicking anywhere; m_startXY, m_startZ != m_0 in this case */
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m_0 = transform_origin;
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m_planeXY = Plane3( g_vector3_axes[m_axisZ], m_0[m_axisZ] );
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#if 0
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Vector3 xydir( m_view->getViewDir() );
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#else
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Vector3 xydir( m_view->getViewer() - m_0 );
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#endif
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xydir[m_axisZ] = 0;
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vector3_normalise( xydir );
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m_planeZ = Plane3( xydir, vector3_dot( xydir, m_0 ) );
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m_startXY = point_on_plane( m_planeXY, m_view->GetViewMatrix(), device_point );
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m_startZ = point_on_plane( m_planeZ, m_view->GetViewMatrix(), device_point );
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m_bounds = bounds;
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m_snapBounds.Construct( device2manip, device_point, bounds, transform_origin );
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}
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void Transform( const Matrix4& manip2object, const Matrix4& device2manip, const DeviceVector device_point ) override {
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if( SnapBounds::useCondition( g_modifiers, *m_view ) ){
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m_snapBounds.Transform( manip2object, device2manip, device_point );
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return;
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}
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Vector3 current;
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if( g_modifiers.alt() && m_view->fill() ) // Z only
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current = ( point_on_plane( m_planeZ, m_view->GetViewMatrix(), device_point ) - m_startZ ) * g_vector3_axes[m_axisZ];
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else{
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current = point_on_plane( m_planeXY, m_view->GetViewMatrix(), device_point ) - m_startXY;
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current[m_axisZ] = 0;
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}
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if( g_modifiers.shift() ) // snap to axis
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current *= g_vector3_axes[vector3_max_abs_component_index( current )];
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if( g_modifiers.ctrl() ) // snap aabb
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aabb_snap_translation( current, m_bounds );
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else
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vector3_snap( current, GetSnapGridSize() );
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m_translatable.translate( current );
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}
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void set0( const Vector3& start ){
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m_0 = start;
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m_snapBounds.set0( start );
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}
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};
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