228 lines
8 KiB
C++
228 lines
8 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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#if !defined( INCLUDED_DRAGPLANES_H )
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#define INCLUDED_DRAGPLANES_H
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#include "selectable.h"
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#include "selectionlib.h"
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#include "math/aabb.h"
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#include "math/line.h"
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// local must be a pure rotation
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inline Vector3 translation_to_local( const Vector3& translation, const Matrix4& local ){
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return matrix4_get_translation_vec3(
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matrix4_multiplied_by_matrix4(
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matrix4_translated_by_vec3( matrix4_transposed( local ), translation ),
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local
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)
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);
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}
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// local must be a pure rotation
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inline Vector3 translation_from_local( const Vector3& translation, const Matrix4& local ){
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return matrix4_get_translation_vec3(
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matrix4_multiplied_by_matrix4(
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matrix4_translated_by_vec3( local, translation ),
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matrix4_transposed( local )
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)
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);
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}
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class DragPlanes
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{
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public:
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ObservedSelectable m_selectable_right; // +x
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ObservedSelectable m_selectable_left; // -x
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ObservedSelectable m_selectable_front; // +y
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ObservedSelectable m_selectable_back; // -y
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ObservedSelectable m_selectable_top; // +z
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ObservedSelectable m_selectable_bottom; // -z
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AABB m_bounds;
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DragPlanes( const SelectionChangeCallback& onchanged ) :
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m_selectable_right( onchanged ),
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m_selectable_left( onchanged ),
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m_selectable_front( onchanged ),
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m_selectable_back( onchanged ),
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m_selectable_top( onchanged ),
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m_selectable_bottom( onchanged ){
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}
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bool isSelected() const {
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return m_selectable_right.isSelected()
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|| m_selectable_left.isSelected()
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|| m_selectable_front.isSelected()
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|| m_selectable_back.isSelected()
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|| m_selectable_top.isSelected()
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|| m_selectable_bottom.isSelected();
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}
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void setSelected( bool selected ){
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m_selectable_right.setSelected( selected );
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m_selectable_left.setSelected( selected );
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m_selectable_front.setSelected( selected );
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m_selectable_back.setSelected( selected );
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m_selectable_top.setSelected( selected );
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m_selectable_bottom.setSelected( selected );
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}
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void selectPlanes( const AABB& aabb, Selector& selector, SelectionTest& test, const PlaneCallback& selectedPlaneCallback, const Matrix4& rotation = g_matrix4_identity ){
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Line line( test.getNear(), test.getFar() );
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Vector3 corners[8];
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aabb_corners_oriented( aabb, rotation, corners );
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Plane3 planes[6];
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aabb_planes_oriented( aabb, rotation, planes );
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for ( Vector3* i = corners; i != corners + 8; ++i )
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{
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*i = vector3_subtracted( line_closest_point( line, *i ), *i );
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}
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if ( vector3_dot( planes[0].normal(), corners[1] ) > 0
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&& vector3_dot( planes[0].normal(), corners[2] ) > 0
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&& vector3_dot( planes[0].normal(), corners[5] ) > 0
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&& vector3_dot( planes[0].normal(), corners[6] ) > 0 ) {
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Selector_add( selector, m_selectable_right );
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selectedPlaneCallback( planes[0] );
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//globalOutputStream() << "right\n";
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}
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if ( vector3_dot( planes[1].normal(), corners[0] ) > 0
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&& vector3_dot( planes[1].normal(), corners[3] ) > 0
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&& vector3_dot( planes[1].normal(), corners[4] ) > 0
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&& vector3_dot( planes[1].normal(), corners[7] ) > 0 ) {
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Selector_add( selector, m_selectable_left );
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selectedPlaneCallback( planes[1] );
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//globalOutputStream() << "left\n";
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}
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if ( vector3_dot( planes[2].normal(), corners[0] ) > 0
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&& vector3_dot( planes[2].normal(), corners[1] ) > 0
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&& vector3_dot( planes[2].normal(), corners[4] ) > 0
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&& vector3_dot( planes[2].normal(), corners[5] ) > 0 ) {
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Selector_add( selector, m_selectable_front );
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selectedPlaneCallback( planes[2] );
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//globalOutputStream() << "front\n";
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}
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if ( vector3_dot( planes[3].normal(), corners[2] ) > 0
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&& vector3_dot( planes[3].normal(), corners[3] ) > 0
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&& vector3_dot( planes[3].normal(), corners[6] ) > 0
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&& vector3_dot( planes[3].normal(), corners[7] ) > 0 ) {
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Selector_add( selector, m_selectable_back );
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selectedPlaneCallback( planes[3] );
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//globalOutputStream() << "back\n";
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}
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if ( vector3_dot( planes[4].normal(), corners[0] ) > 0
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&& vector3_dot( planes[4].normal(), corners[1] ) > 0
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&& vector3_dot( planes[4].normal(), corners[2] ) > 0
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&& vector3_dot( planes[4].normal(), corners[3] ) > 0 ) {
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Selector_add( selector, m_selectable_top );
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selectedPlaneCallback( planes[4] );
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//globalOutputStream() << "top\n";
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}
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if ( vector3_dot( planes[5].normal(), corners[4] ) > 0
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&& vector3_dot( planes[5].normal(), corners[5] ) > 0
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&& vector3_dot( planes[5].normal(), corners[6] ) > 0
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&& vector3_dot( planes[5].normal(), corners[7] ) > 0 ) {
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Selector_add( selector, m_selectable_bottom );
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selectedPlaneCallback( planes[5] );
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//globalOutputStream() << "bottom\n";
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}
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m_bounds = aabb;
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}
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void selectReversedPlanes( const AABB& aabb, Selector& selector, const SelectedPlanes& selectedPlanes, const Matrix4& rotation = g_matrix4_identity ){
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Plane3 planes[6];
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aabb_planes_oriented( aabb, rotation, planes );
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if ( selectedPlanes.contains( plane3_flipped( planes[0] ) ) ) {
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Selector_add( selector, m_selectable_right );
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}
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if ( selectedPlanes.contains( plane3_flipped( planes[1] ) ) ) {
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Selector_add( selector, m_selectable_left );
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}
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if ( selectedPlanes.contains( plane3_flipped( planes[2] ) ) ) {
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Selector_add( selector, m_selectable_front );
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}
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if ( selectedPlanes.contains( plane3_flipped( planes[3] ) ) ) {
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Selector_add( selector, m_selectable_back );
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}
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if ( selectedPlanes.contains( plane3_flipped( planes[4] ) ) ) {
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Selector_add( selector, m_selectable_top );
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}
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if ( selectedPlanes.contains( plane3_flipped( planes[5] ) ) ) {
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Selector_add( selector, m_selectable_bottom );
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}
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}
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AABB evaluateResize( const Vector3& translation ) const {
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Vector3 min = m_bounds.origin - m_bounds.extents;
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Vector3 max = m_bounds.origin + m_bounds.extents;
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if ( m_bounds.extents[0] != 0 ) {
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if ( m_selectable_right.isSelected() ) {
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max[0] += translation[0];
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//globalOutputStream() << "moving right\n";
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}
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if ( m_selectable_left.isSelected() ) {
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min[0] += translation[0];
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//globalOutputStream() << "moving left\n";
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}
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}
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if ( m_bounds.extents[1] != 0 ) {
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if ( m_selectable_front.isSelected() ) {
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max[1] += translation[1];
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//globalOutputStream() << "moving front\n";
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}
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if ( m_selectable_back.isSelected() ) {
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min[1] += translation[1];
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//globalOutputStream() << "moving back\n";
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}
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}
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if ( m_bounds.extents[2] != 0 ) {
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if ( m_selectable_top.isSelected() ) {
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max[2] += translation[2];
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//globalOutputStream() << "moving top\n";
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}
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if ( m_selectable_bottom.isSelected() ) {
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min[2] += translation[2];
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//globalOutputStream() << "moving bottom\n";
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}
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}
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return AABB( vector3_mid( min, max ), vector3_scaled( vector3_subtracted( max, min ), 0.5 ) );
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}
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AABB evaluateResize( const Vector3& translation, const Matrix4& rotation ) const {
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AABB aabb( evaluateResize( translation_to_local( translation, rotation ) ) );
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aabb.origin = m_bounds.origin + translation_from_local( aabb.origin - m_bounds.origin, rotation );
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return aabb;
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}
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Matrix4 evaluateTransform( const Vector3& translation ) const {
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AABB aabb( evaluateResize( translation ) );
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Vector3 scale(
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m_bounds.extents[0] != 0 ? aabb.extents[0] / m_bounds.extents[0] : 1,
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m_bounds.extents[1] != 0 ? aabb.extents[1] / m_bounds.extents[1] : 1,
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m_bounds.extents[2] != 0 ? aabb.extents[2] / m_bounds.extents[2] : 1
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);
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Matrix4 matrix( matrix4_translation_for_vec3( aabb.origin - m_bounds.origin ) );
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matrix4_pivoted_scale_by_vec3( matrix, scale, m_bounds.origin );
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return matrix;
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}
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};
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#endif
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