raytracing/create_scene.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2015-2016 Mario Luzeiro <[email protected]>
 * Copyright (C) 2015-2021 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "render_3d_raytrace.h"
#include "shapes3D/plane_3d.h"
#include "shapes3D/round_segment_3d.h"
#include "shapes3D/layer_item_3d.h"
#include "shapes3D/cylinder_3d.h"
#include "shapes3D/triangle_3d.h"
#include "shapes2D/layer_item_2d.h"
#include "shapes2D/ring_2d.h"
#include "shapes2D/polygon_2d.h"
#include "shapes2D/filled_circle_2d.h"
#include "shapes2D/round_segment_2d.h"
#include "accelerators/bvh_pbrt.h"
#include "3d_fastmath.h"
#include "3d_math.h"

#include <board.h>
#include <footprint.h>

#include <base_units.h>
#include <profile.h> // To use GetRunningMicroSecs or another profiling utility

static float TransparencyControl( float aGrayColorValue, float aTransparency )
{
 const float aaa = aTransparency * aTransparency * aTransparency;

 // 1.00-1.05*(1.0-x)^3
 float ca = 1.0f - aTransparency;
 ca = 1.00f - 1.05f * ca * ca * ca;

 return glm::max( glm::min( aGrayColorValue * ca + aaa, 1.0f ), 0.0f );
}

#define UNITS3D_TO_UNITSPCB ( IU_PER_MM )


void RENDER_3D_RAYTRACE::setupMaterials()
{
 MATERIAL::SetDefaultRefractionRayCount( m_boardAdapter.m_RtRefractionSampleCount );
 MATERIAL::SetDefaultReflectionRayCount( m_boardAdapter.m_RtReflectionSampleCount );

 MATERIAL::SetDefaultRefractionRecursionCount( m_boardAdapter.m_RtRecursiveRefractionCount );
 MATERIAL::SetDefaultReflectionRecursionCount( m_boardAdapter.m_RtRecursiveReflectionCount );

 double mmTo3Dunits = IU_PER_MM * m_boardAdapter.BiuTo3dUnits();

 if( m_boardAdapter.GetFlag( FL_RENDER_RAYTRACING_PROCEDURAL_TEXTURES ) )
 {
 m_boardMaterial = BOARD_NORMAL( 0.40f * mmTo3Dunits );

 m_copperMaterial = COPPER_NORMAL( 4.0f * mmTo3Dunits, &m_boardMaterial );

 m_platedCopperMaterial = PLATED_COPPER_NORMAL( 0.5f * mmTo3Dunits );

 m_solderMaskMaterial = SOLDER_MASK_NORMAL( &m_boardMaterial );

 m_plasticMaterial = PLASTIC_NORMAL( 0.05f * mmTo3Dunits );

 m_shinyPlasticMaterial = PLASTIC_SHINE_NORMAL( 0.1f * mmTo3Dunits );

 m_brushedMetalMaterial = BRUSHED_METAL_NORMAL( 0.05f * mmTo3Dunits );

 m_silkScreenMaterial = SILK_SCREEN_NORMAL( 0.25f * mmTo3Dunits );
 }

 // http://devernay.free.fr/cours/opengl/materials.html
 // Copper
 const SFVEC3F copperSpecularLinear =
 ConvertSRGBToLinear( glm::clamp( (SFVEC3F) m_boardAdapter.m_CopperColor * 0.5f + 0.25f,
 SFVEC3F( 0.0f ), SFVEC3F( 1.0f ) ) );

 m_materials.m_Copper = BLINN_PHONG_MATERIAL(
 ConvertSRGBToLinear( (SFVEC3F) m_boardAdapter.m_CopperColor * 0.3f ),
 SFVEC3F( 0.0f ), copperSpecularLinear, 0.4f * 128.0f, 0.0f, 0.0f );

 if( m_boardAdapter.GetFlag( FL_RENDER_RAYTRACING_PROCEDURAL_TEXTURES ) )
 m_materials.m_Copper.SetGenerator( &m_platedCopperMaterial );

 m_materials.m_NonPlatedCopper = BLINN_PHONG_MATERIAL(
 ConvertSRGBToLinear( SFVEC3F( 0.191f, 0.073f, 0.022f ) ), SFVEC3F( 0.0f, 0.0f, 0.0f ),
 SFVEC3F( 0.256f, 0.137f, 0.086f ), 0.15f * 128.0f, 0.0f, 0.0f );

 if( m_boardAdapter.GetFlag( FL_RENDER_RAYTRACING_PROCEDURAL_TEXTURES ) )
 m_materials.m_NonPlatedCopper.SetGenerator( &m_copperMaterial );

 m_materials.m_Paste = BLINN_PHONG_MATERIAL(
 ConvertSRGBToLinear( (SFVEC3F) m_boardAdapter.m_SolderPasteColor )
 * ConvertSRGBToLinear( (SFVEC3F) m_boardAdapter.m_SolderPasteColor ),
 SFVEC3F( 0.0f, 0.0f, 0.0f ),
 ConvertSRGBToLinear( (SFVEC3F) m_boardAdapter.m_SolderPasteColor )
 * ConvertSRGBToLinear(
 (SFVEC3F) m_boardAdapter.m_SolderPasteColor ),
 0.10f * 128.0f, 0.0f, 0.0f );

 m_materials.m_SilkS = BLINN_PHONG_MATERIAL( ConvertSRGBToLinear( SFVEC3F( 0.11f ) ),
 SFVEC3F( 0.0f, 0.0f, 0.0f ),
 glm::clamp( ( ( SFVEC3F )( 1.0f ) - ConvertSRGBToLinear(
 (SFVEC3F) m_boardAdapter.m_SilkScreenColorTop ) ),
 SFVEC3F( 0.0f ), SFVEC3F( 0.10f ) ), 0.078125f * 128.0f, 0.0f, 0.0f );

 if( m_boardAdapter.GetFlag( FL_RENDER_RAYTRACING_PROCEDURAL_TEXTURES ) )
 m_materials.m_SilkS.SetGenerator( &m_silkScreenMaterial );

 // Assume that SolderMaskTop == SolderMaskBot
 const float solderMask_gray =
 ( m_boardAdapter.m_SolderMaskColorTop.r + m_boardAdapter.m_SolderMaskColorTop.g
 + m_boardAdapter.m_SolderMaskColorTop.b )
 / 3.0f;

 const float solderMask_transparency = TransparencyControl( solderMask_gray,
 1.0f - m_boardAdapter.m_SolderMaskColorTop.a );

 m_materials.m_SolderMask = BLINN_PHONG_MATERIAL(
 ConvertSRGBToLinear( (SFVEC3F) m_boardAdapter.m_SolderMaskColorTop ) * 0.10f,
 SFVEC3F( 0.0f, 0.0f, 0.0f ),
 SFVEC3F( glm::clamp( solderMask_gray * 2.0f, 0.25f, 1.0f ) ), 0.85f * 128.0f,
 solderMask_transparency, 0.16f );

 m_materials.m_SolderMask.SetCastShadows( true );
 m_materials.m_SolderMask.SetRefractionRayCount( 1 );

 if( m_boardAdapter.GetFlag( FL_RENDER_RAYTRACING_PROCEDURAL_TEXTURES ) )
 m_materials.m_SolderMask.SetGenerator( &m_solderMaskMaterial );

 m_materials.m_EpoxyBoard =
 BLINN_PHONG_MATERIAL( ConvertSRGBToLinear( SFVEC3F( 16.0f / 255.0f, 14.0f / 255.0f,
 10.0f / 255.0f ) ),
 SFVEC3F( 0.0f, 0.0f, 0.0f ),
 ConvertSRGBToLinear( SFVEC3F( 10.0f / 255.0f, 8.0f / 255.0f,
 10.0f / 255.0f ) ),
 0.1f * 128.0f, 1.0f - m_boardAdapter.m_BoardBodyColor.a, 0.0f );

 m_materials.m_EpoxyBoard.SetAbsorvance( 10.0f );

 if( m_boardAdapter.GetFlag( FL_RENDER_RAYTRACING_PROCEDURAL_TEXTURES ) )
 m_materials.m_EpoxyBoard.SetGenerator( &m_boardMaterial );

 SFVEC3F bgTop = ConvertSRGBToLinear( (SFVEC3F) m_boardAdapter.m_BgColorTop );

 m_materials.m_Floor = BLINN_PHONG_MATERIAL( bgTop * 0.125f, SFVEC3F( 0.0f, 0.0f, 0.0f ),
 ( SFVEC3F( 1.0f ) - bgTop ) / 3.0f,
 0.10f * 128.0f, 0.0f, 0.50f );
 m_materials.m_Floor.SetCastShadows( false );
 m_materials.m_Floor.SetReflectionRecursionCount( 1 );
}


void RENDER_3D_RAYTRACE::createObject( CONTAINER_3D& aDstContainer, const OBJECT_2D* aObject2D,
 float aZMin, float aZMax, const MATERIAL* aMaterial,
 const SFVEC3F& aObjColor )
{
 switch( aObject2D->GetObjectType() )
 {
 case OBJECT_2D_TYPE::DUMMYBLOCK:
 {
 m_convertedDummyBlockCount++;

 XY_PLANE* objPtr;
 objPtr = new XY_PLANE( BBOX_3D(
 SFVEC3F( aObject2D->GetBBox().Min().x, aObject2D->GetBBox().Min().y, aZMin ),
 SFVEC3F( aObject2D->GetBBox().Max().x, aObject2D->GetBBox().Max().y, aZMin ) ) );
 objPtr->SetMaterial( aMaterial );
 objPtr->SetColor( ConvertSRGBToLinear( aObjColor ) );
 aDstContainer.Add( objPtr );

 objPtr = new XY_PLANE( BBOX_3D(
 SFVEC3F( aObject2D->GetBBox().Min().x, aObject2D->GetBBox().Min().y, aZMax ),
 SFVEC3F( aObject2D->GetBBox().Max().x, aObject2D->GetBBox().Max().y, aZMax ) ) );
 objPtr->SetMaterial( aMaterial );
 objPtr->SetColor( ConvertSRGBToLinear( aObjColor ) );
 aDstContainer.Add( objPtr );
 break;
 }

 case OBJECT_2D_TYPE::ROUNDSEG:
 {
 m_converted2dRoundSegmentCount++;

 const ROUND_SEGMENT_2D* aRoundSeg2D = static_cast<const ROUND_SEGMENT_2D*>( aObject2D );
 ROUND_SEGMENT* objPtr = new ROUND_SEGMENT( *aRoundSeg2D, aZMin, aZMax );
 objPtr->SetMaterial( aMaterial );
 objPtr->SetColor( ConvertSRGBToLinear( aObjColor ) );
 aDstContainer.Add( objPtr );
 break;
 }

 default:
 {
 LAYER_ITEM* objPtr = new LAYER_ITEM( aObject2D, aZMin, aZMax );
 objPtr->SetMaterial( aMaterial );
 objPtr->SetColor( ConvertSRGBToLinear( aObjColor ) );
 aDstContainer.Add( objPtr );
 break;
 }
 }
}


void RENDER_3D_RAYTRACE::createItemsFromContainer( const BVH_CONTAINER_2D* aContainer2d,
 PCB_LAYER_ID aLayer_id,
 const MATERIAL* aMaterialLayer,
 const SFVEC3F& aLayerColor,
 float aLayerZOffset )
{
 if( aContainer2d == nullptr )
 return;

 const LIST_OBJECT2D& listObject2d = aContainer2d->GetList();

 if( listObject2d.size() == 0 )
 return;

 for( const OBJECT_2D* object2d_A : listObject2d )
 {
 // not yet used / implemented (can be used in future to clip the objects in the
 // board borders
 OBJECT_2D* object2d_C = CSGITEM_FULL;

 std::vector<const OBJECT_2D*>* object2d_B = CSGITEM_EMPTY;

 object2d_B = new std::vector<const OBJECT_2D*>();

 // Subtract holes but not in SolderPaste
 // (can be added as an option in future)
 if( !( aLayer_id == B_Paste || aLayer_id == F_Paste ) )
 {
 // Check if there are any layerhole that intersects this object
 // Eg: a segment is cut by a via hole or THT hole.
 const MAP_CONTAINER_2D_BASE& layerHolesMap = m_boardAdapter.GetLayerHoleMap();

 if( layerHolesMap.find( aLayer_id ) != layerHolesMap.end() )
 {
 const BVH_CONTAINER_2D* holes2d = layerHolesMap.at( aLayer_id );

 CONST_LIST_OBJECT2D intersecting;

 holes2d->GetIntersectingObjects( object2d_A->GetBBox(), intersecting );

 for( const OBJECT_2D* hole2d : intersecting )
 object2d_B->push_back( hole2d );
 }

 // Check if there are any THT that intersects this object. If we're processing a silk
 // layer and the flag is set, then clip the silk at the outer edge of the annular ring,
 // rather than the at the outer edge of the copper plating.
 const BVH_CONTAINER_2D& throughHoleOuter =
 ( m_boardAdapter.GetFlag( FL_CLIP_SILK_ON_VIA_ANNULUS )
 && m_boardAdapter.GetFlag( FL_USE_REALISTIC_MODE )
 && ( ( aLayer_id == B_SilkS ) || ( aLayer_id == F_SilkS ) ) ) ?
 m_boardAdapter.GetThroughHoleAnnularRings() :
 m_boardAdapter.GetThroughHoleOds();

 if( !throughHoleOuter.GetList().empty() )
 {
 CONST_LIST_OBJECT2D intersecting;

 throughHoleOuter.GetIntersectingObjects( object2d_A->GetBBox(), intersecting );

 for( const OBJECT_2D* hole2d : intersecting )
 object2d_B->push_back( hole2d );
 }
 }

 if( !m_antioutlineBoard2dObjects->GetList().empty() )
 {
 CONST_LIST_OBJECT2D intersecting;

 m_antioutlineBoard2dObjects->GetIntersectingObjects( object2d_A->GetBBox(),
 intersecting );

 for( const OBJECT_2D* obj : intersecting )
 object2d_B->push_back( obj );
 }

 const MAP_CONTAINER_2D_BASE& mapLayers = m_boardAdapter.GetLayerMap();

 if( m_boardAdapter.GetFlag( FL_SUBTRACT_MASK_FROM_SILK )
 && m_boardAdapter.GetFlag( FL_USE_REALISTIC_MODE )
 && ( ( aLayer_id == B_SilkS && mapLayers.find( B_Mask ) != mapLayers.end() )
 || ( aLayer_id == F_SilkS && mapLayers.find( F_Mask ) != mapLayers.end() ) ) )
 {
 const PCB_LAYER_ID layerMask_id = ( aLayer_id == B_SilkS ) ? B_Mask : F_Mask;

 const BVH_CONTAINER_2D* containerMaskLayer2d = mapLayers.at( layerMask_id );

 CONST_LIST_OBJECT2D intersecting;

 if( containerMaskLayer2d ) // can be null if B_Mask or F_Mask is not shown
 containerMaskLayer2d->GetIntersectingObjects( object2d_A->GetBBox(), intersecting );

 for( const OBJECT_2D* obj2d : intersecting )
 object2d_B->push_back( obj2d );
 }

 if( object2d_B->empty() )
 {
 delete object2d_B;
 object2d_B = CSGITEM_EMPTY;
 }

 if( ( object2d_B == CSGITEM_EMPTY ) && ( object2d_C == CSGITEM_FULL ) )
 {
 LAYER_ITEM* objPtr = new LAYER_ITEM( object2d_A,
 m_boardAdapter.GetLayerBottomZPos( aLayer_id ) - aLayerZOffset,
 m_boardAdapter.GetLayerTopZPos( aLayer_id ) + aLayerZOffset );
 objPtr->SetMaterial( aMaterialLayer );
 objPtr->SetColor( ConvertSRGBToLinear( aLayerColor ) );
 m_objectContainer.Add( objPtr );
 }
 else
 {
 LAYER_ITEM_2D* itemCSG2d = new LAYER_ITEM_2D( object2d_A, object2d_B, object2d_C,
 object2d_A->GetBoardItem() );
 m_containerWithObjectsToDelete.Add( itemCSG2d );

 LAYER_ITEM* objPtr = new LAYER_ITEM( itemCSG2d,
 m_boardAdapter.GetLayerBottomZPos( aLayer_id ) - aLayerZOffset,
 m_boardAdapter.GetLayerTopZPos( aLayer_id ) + aLayerZOffset );

 objPtr->SetMaterial( aMaterialLayer );
 objPtr->SetColor( ConvertSRGBToLinear( aLayerColor ) );

 m_objectContainer.Add( objPtr );
 }
 }
}


extern void buildBoardBoundingBoxPoly( const BOARD* aBoard, SHAPE_POLY_SET& aOutline );


void RENDER_3D_RAYTRACE::Reload( REPORTER* aStatusReporter, REPORTER* aWarningReporter,
 bool aOnlyLoadCopperAndShapes )
{
 m_reloadRequested = false;

 m_modelMaterialMap.clear();

 OBJECT_2D_STATS::Instance().ResetStats();
 OBJECT_3D_STATS::Instance().ResetStats();

 unsigned stats_startReloadTime = GetRunningMicroSecs();

 if( !aOnlyLoadCopperAndShapes )
 {
 m_boardAdapter.InitSettings( aStatusReporter, aWarningReporter );

 SFVEC3F camera_pos = m_boardAdapter.GetBoardCenter();
 m_camera.SetBoardLookAtPos( camera_pos );
 }

 m_objectContainer.Clear();
 m_containerWithObjectsToDelete.Clear();

 setupMaterials();

 if( aStatusReporter )
 aStatusReporter->Report( _( "Load Raytracing: board" ) );

 // Create and add the outline board
 delete m_outlineBoard2dObjects;
 delete m_antioutlineBoard2dObjects;

 m_outlineBoard2dObjects = new CONTAINER_2D;
 m_antioutlineBoard2dObjects = new BVH_CONTAINER_2D;

 if( !aOnlyLoadCopperAndShapes )
 {
 const int outlineCount = m_boardAdapter.GetBoardPoly().OutlineCount();

 if( outlineCount > 0 )
 {
 float divFactor = 0.0f;

 if( m_boardAdapter.GetViaCount() )
 divFactor = m_boardAdapter.GetAverageViaHoleDiameter() * 18.0f;
 else if( m_boardAdapter.GetHoleCount() )
 divFactor = m_boardAdapter.GetAverageHoleDiameter() * 8.0f;

 SHAPE_POLY_SET boardPolyCopy = m_boardAdapter.GetBoardPoly();

 // Calculate an antiboard outline
 SHAPE_POLY_SET antiboardPoly;

 buildBoardBoundingBoxPoly( m_boardAdapter.GetBoard(), antiboardPoly );

 antiboardPoly.BooleanSubtract( boardPolyCopy, SHAPE_POLY_SET::PM_FAST );
 antiboardPoly.Fracture( SHAPE_POLY_SET::PM_FAST );

 for( int ii = 0; ii < antiboardPoly.OutlineCount(); ii++ )
 {
 ConvertPolygonToBlocks( antiboardPoly, *m_antioutlineBoard2dObjects,
 m_boardAdapter.BiuTo3dUnits(), -1.0f,
 *m_boardAdapter.GetBoard(), ii );
 }

 m_antioutlineBoard2dObjects->BuildBVH();

 boardPolyCopy.Fracture( SHAPE_POLY_SET::PM_FAST );

 for( int ii = 0; ii < outlineCount; ii++ )
 {
 ConvertPolygonToBlocks( boardPolyCopy, *m_outlineBoard2dObjects,
 m_boardAdapter.BiuTo3dUnits(), divFactor,
 *m_boardAdapter.GetBoard(), ii );
 }

 if( m_boardAdapter.GetFlag( FL_SHOW_BOARD_BODY ) )
 {
 const LIST_OBJECT2D& listObjects = m_outlineBoard2dObjects->GetList();

 for( const OBJECT_2D* object2d_A : listObjects )
 {
 std::vector<const OBJECT_2D*>* object2d_B = new std::vector<const OBJECT_2D*>();

 // Check if there are any THT that intersects this outline object part
 if( !m_boardAdapter.GetThroughHoleOds().GetList().empty() )
 {
 const BVH_CONTAINER_2D& throughHoles = m_boardAdapter.GetThroughHoleOds();
 CONST_LIST_OBJECT2D intersecting;

 throughHoles.GetIntersectingObjects( object2d_A->GetBBox(), intersecting );

 for( const OBJECT_2D* hole : intersecting )
 {
 if( object2d_A->Intersects( hole->GetBBox() ) )
 object2d_B->push_back( hole );
 }
 }

 if( !m_antioutlineBoard2dObjects->GetList().empty() )
 {
 CONST_LIST_OBJECT2D intersecting;

 m_antioutlineBoard2dObjects->GetIntersectingObjects( object2d_A->GetBBox(),
 intersecting );

 for( const OBJECT_2D* obj : intersecting )
 object2d_B->push_back( obj );
 }

 if( object2d_B->empty() )
 {
 delete object2d_B;
 object2d_B = CSGITEM_EMPTY;
 }

 if( object2d_B == CSGITEM_EMPTY )
 {
 LAYER_ITEM* objPtr = new LAYER_ITEM( object2d_A,
 m_boardAdapter.GetLayerBottomZPos( F_Cu ),
 m_boardAdapter.GetLayerBottomZPos( B_Cu ) );

 objPtr->SetMaterial( &m_materials.m_EpoxyBoard );
 objPtr->SetColor( ConvertSRGBToLinear( m_boardAdapter.m_BoardBodyColor ) );
 m_objectContainer.Add( objPtr );
 }
 else
 {

 LAYER_ITEM_2D* itemCSG2d = new LAYER_ITEM_2D( object2d_A, object2d_B,
 CSGITEM_FULL,
 *m_boardAdapter.GetBoard() );

 m_containerWithObjectsToDelete.Add( itemCSG2d );

 LAYER_ITEM* objPtr = new LAYER_ITEM( itemCSG2d,
 m_boardAdapter.GetLayerBottomZPos( F_Cu ),
 m_boardAdapter.GetLayerBottomZPos( B_Cu ) );

 objPtr->SetMaterial( &m_materials.m_EpoxyBoard );
 objPtr->SetColor( ConvertSRGBToLinear( m_boardAdapter.m_BoardBodyColor ) );
 m_objectContainer.Add( objPtr );
 }
 }

 // Add cylinders of the board body to container
 // Note: This is actually a workaround for the holes in the board.
 // The issue is because if a hole is in a border of a divided polygon ( ex
 // a polygon or dummy block) it will cut also the render of the hole.
 // So this will add a full hole.
 // In fact, that is not need if the hole have copper.
 if( !m_boardAdapter.GetThroughHoleOds().GetList().empty() )
 {
 const LIST_OBJECT2D& holeList = m_boardAdapter.GetThroughHoleOds().GetList();

 for( const OBJECT_2D* hole2d : holeList )
 {
 if( !m_antioutlineBoard2dObjects->GetList().empty() )
 {
 CONST_LIST_OBJECT2D intersecting;

 m_antioutlineBoard2dObjects->GetIntersectingObjects( hole2d->GetBBox(),
 intersecting );

 // Do not add cylinder if it intersects the edge of the board
 if( !intersecting.empty() )
 continue;
 }

 switch( hole2d->GetObjectType() )
 {
 case OBJECT_2D_TYPE::FILLED_CIRCLE:
 {
 const float radius = hole2d->GetBBox().GetExtent().x * 0.5f * 0.999f;

 CYLINDER* objPtr = new CYLINDER( hole2d->GetCentroid(),
 NextFloatDown( m_boardAdapter.GetLayerBottomZPos( F_Cu ) ),
 NextFloatUp( m_boardAdapter.GetLayerBottomZPos( B_Cu ) ),
 radius );

 objPtr->SetMaterial( &m_materials.m_EpoxyBoard );
 objPtr->SetColor( ConvertSRGBToLinear( m_boardAdapter.m_BoardBodyColor ) );

 m_objectContainer.Add( objPtr );
 }
 break;

 default:
 break;
 }
 }
 }
 }
 }
 }

 if( aStatusReporter )
 aStatusReporter->Report( _( "Load Raytracing: layers" ) );

 // Add layers maps (except B_Mask and F_Mask)
 for( auto entry : m_boardAdapter.GetLayerMap() )
 {
 PCB_LAYER_ID layer_id = entry.first;
 const BVH_CONTAINER_2D* container2d = entry.second;

 // Only process layers that exist
 if( !container2d )
 continue;

 if( aOnlyLoadCopperAndShapes && !IsCopperLayer( layer_id ) )
 continue;

 // Mask layers are not processed here because they are a special case
 if( layer_id == B_Mask || layer_id == F_Mask )
 continue;

  MATERIAL* materialLayer = &m_materials.m_SilkS;
 SFVEC3F layerColor = SFVEC3F( 0.0f, 0.0f, 0.0f );

 switch( layer_id )
 {
 case B_Adhes:
 case F_Adhes:
 break;

 case B_Paste:
 case F_Paste:
 materialLayer = &m_materials.m_Paste;

 if( m_boardAdapter.GetFlag( FL_USE_REALISTIC_MODE ) )
 layerColor = m_boardAdapter.m_SolderPasteColor;
 else
 layerColor = m_boardAdapter.GetLayerColor( layer_id );

 break;

 case B_SilkS:
 materialLayer = &m_materials.m_SilkS;

 if( m_boardAdapter.GetFlag( FL_USE_REALISTIC_MODE ) )
 layerColor = m_boardAdapter.m_SilkScreenColorBot;
 else
 layerColor = m_boardAdapter.GetLayerColor( layer_id );

 break;

 case F_SilkS:
 materialLayer = &m_materials.m_SilkS;

 if( m_boardAdapter.GetFlag( FL_USE_REALISTIC_MODE ) )
 layerColor = m_boardAdapter.m_SilkScreenColorTop;
 else
 layerColor = m_boardAdapter.GetLayerColor( layer_id );

 break;

 case Dwgs_User:
 case Cmts_User:
 case Eco1_User:
 case Eco2_User:
 case Edge_Cuts:
 case Margin:
 break;

 case B_CrtYd:
 case F_CrtYd:
 break;

 case B_Fab:
 case F_Fab:
 break;

 default:
 if( m_boardAdapter.GetFlag( FL_USE_REALISTIC_MODE ) )
 {
 if( m_boardAdapter.GetFlag( FL_RENDER_PLATED_PADS_AS_PLATED ) )
 layerColor = SFVEC3F( 184.0f / 255.0f, 115.0f / 255.0f, 50.0f / 255.0f );
 else
 layerColor = m_boardAdapter.m_CopperColor;
 }
 else
 {
 layerColor = m_boardAdapter.GetLayerColor( layer_id );
 }

 materialLayer = &m_materials.m_NonPlatedCopper;
 break;
 }

 createItemsFromContainer( container2d, layer_id, materialLayer, layerColor, 0.0f );
 } // for each layer on map

 // Create plated copper
 if( m_boardAdapter.GetFlag( FL_RENDER_PLATED_PADS_AS_PLATED )
 && m_boardAdapter.GetFlag( FL_USE_REALISTIC_MODE ) )
 {
 createItemsFromContainer( m_boardAdapter.GetPlatedPadsFront(), F_Cu, &m_materials.m_Copper,
 m_boardAdapter.m_CopperColor,
 m_boardAdapter.GetCopperThickness() * 0.1f );

 createItemsFromContainer( m_boardAdapter.GetPlatedPadsBack(), B_Cu, &m_materials.m_Copper,
 m_boardAdapter.m_CopperColor,
 -m_boardAdapter.GetCopperThickness() * 0.1f );
 }

 if( !aOnlyLoadCopperAndShapes )
 {
 // Add Mask layer
 // Solder mask layers are "negative" layers so the elements that we have in the container
 // should remove the board outline. We will check for all objects in the outline if it
 // intersects any object in the layer container and also any hole.
 if( m_boardAdapter.GetFlag( FL_SOLDERMASK ) && !m_outlineBoard2dObjects->GetList().empty() )
 {
 const MATERIAL* materialLayer = &m_materials.m_SolderMask;

 for( auto entry : m_boardAdapter.GetLayerMap() )
 {
 PCB_LAYER_ID layer_id = entry.first;
 const BVH_CONTAINER_2D* container2d = entry.second;

 // Only process layers that exist
 if( !container2d )
 continue;

 // Only get the Solder mask layers (and only if the board has them)
 if( !( layer_id == B_Mask || layer_id == F_Mask ) )
 continue;

 SFVEC3F layerColor;

 if( m_boardAdapter.GetFlag( FL_USE_REALISTIC_MODE ) )
 {
 if( layer_id == B_Mask )
 layerColor = m_boardAdapter.m_SolderMaskColorBot;
 else
 layerColor = m_boardAdapter.m_SolderMaskColorTop;
 }
 else
 {
 layerColor = m_boardAdapter.GetLayerColor( layer_id );
 }

 const float zLayerMin = m_boardAdapter.GetLayerBottomZPos( layer_id );
 const float zLayerMax = m_boardAdapter.GetLayerTopZPos( layer_id );

 // Get the outline board objects
 for( const OBJECT_2D* object2d_A : m_outlineBoard2dObjects->GetList() )
 {
 std::vector<const OBJECT_2D*>* object2d_B = new std::vector<const OBJECT_2D*>();

 // Check if there are any THT that intersects this outline object part
 if( !m_boardAdapter.GetThroughHoleOds().GetList().empty() )
 {
 const BVH_CONTAINER_2D& throughHoles = m_boardAdapter.GetThroughHoleOds();
 CONST_LIST_OBJECT2D intersecting;

 throughHoles.GetIntersectingObjects( object2d_A->GetBBox(), intersecting );

 for( const OBJECT_2D* hole : intersecting )
 {
 if( object2d_A->Intersects( hole->GetBBox() ) )
 object2d_B->push_back( hole );
 }
 }

 // Check if there are any objects in the layer to subtract with the current
 // object
 if( !container2d->GetList().empty() )
 {
 CONST_LIST_OBJECT2D intersecting;

 container2d->GetIntersectingObjects( object2d_A->GetBBox(), intersecting );

 for( const OBJECT_2D* obj : intersecting )
 object2d_B->push_back( obj );
 }

 if( object2d_B->empty() )
 {
 delete object2d_B;
 object2d_B = CSGITEM_EMPTY;
 }

 if( object2d_B == CSGITEM_EMPTY )
 {
#if 0
 createObject( m_objectContainer, object2d_A, zLayerMin, zLayerMax,
 materialLayer, layerColor );
#else
 LAYER_ITEM* objPtr = new LAYER_ITEM( object2d_A, zLayerMin, zLayerMax );

 objPtr->SetMaterial( materialLayer );
 objPtr->SetColor( ConvertSRGBToLinear( layerColor ) );

 m_objectContainer.Add( objPtr );
#endif
  }
 else
 {
 LAYER_ITEM_2D* itemCSG2d = new LAYER_ITEM_2D( object2d_A, object2d_B,
 CSGITEM_FULL,
 object2d_A->GetBoardItem() );

 m_containerWithObjectsToDelete.Add( itemCSG2d );

 LAYER_ITEM* objPtr = new LAYER_ITEM( itemCSG2d, zLayerMin, zLayerMax );
 objPtr->SetMaterial( materialLayer );
 objPtr->SetColor( ConvertSRGBToLinear( layerColor ) );

 m_objectContainer.Add( objPtr );
 }
 }
 }
 }

 addPadsAndVias();
 }

#ifdef PRINT_STATISTICS_3D_VIEWER
 unsigned stats_endConvertTime = GetRunningMicroSecs();
 unsigned stats_startLoad3DmodelsTime = stats_endConvertTime;
#endif

 if( aStatusReporter )
 aStatusReporter->Report( _( "Loading 3D models..." ) );

 load3DModels( m_objectContainer, aOnlyLoadCopperAndShapes );

#ifdef PRINT_STATISTICS_3D_VIEWER
 unsigned stats_endLoad3DmodelsTime = GetRunningMicroSecs();
#endif

 if( !aOnlyLoadCopperAndShapes )
 {
 // Add floor
 if( m_boardAdapter.GetFlag( FL_RENDER_RAYTRACING_BACKFLOOR ) )
 {
 BBOX_3D boardBBox = m_boardAdapter.GetBBox();

 if( boardBBox.IsInitialized() )
 {
 boardBBox.Scale( 3.0f );

 if( m_objectContainer.GetList().size() > 0 )
 {
 BBOX_3D containerBBox = m_objectContainer.GetBBox();

 containerBBox.Scale( 1.3f );

 const SFVEC3F centerBBox = containerBBox.GetCenter();

 // Floor triangles
 const float minZ = glm::min( containerBBox.Min().z, boardBBox.Min().z );

 const SFVEC3F v1 =
 SFVEC3F( -RANGE_SCALE_3D * 4.0f, -RANGE_SCALE_3D * 4.0f, minZ )
 + SFVEC3F( centerBBox.x, centerBBox.y, 0.0f );

 const SFVEC3F v3 =
 SFVEC3F( +RANGE_SCALE_3D * 4.0f, +RANGE_SCALE_3D * 4.0f, minZ )
 + SFVEC3F( centerBBox.x, centerBBox.y, 0.0f );

 const SFVEC3F v2 = SFVEC3F( v1.x, v3.y, v1.z );
 const SFVEC3F v4 = SFVEC3F( v3.x, v1.y, v1.z );

 SFVEC3F backgroundColor = ConvertSRGBToLinear( m_boardAdapter.m_BgColorTop );

 TRIANGLE* newTriangle1 = new TRIANGLE( v1, v2, v3 );
 TRIANGLE* newTriangle2 = new TRIANGLE( v3, v4, v1 );

 m_objectContainer.Add( newTriangle1 );
 m_objectContainer.Add( newTriangle2 );

 newTriangle1->SetMaterial( &m_materials.m_Floor );
 newTriangle2->SetMaterial( &m_materials.m_Floor );

 newTriangle1->SetColor( backgroundColor );
 newTriangle2->SetColor( backgroundColor );

 // Ceiling triangles
 const float maxZ = glm::max( containerBBox.Max().z, boardBBox.Max().z );

 const SFVEC3F v5 = SFVEC3F( v1.x, v1.y, maxZ );
 const SFVEC3F v6 = SFVEC3F( v2.x, v2.y, maxZ );
 const SFVEC3F v7 = SFVEC3F( v3.x, v3.y, maxZ );
 const SFVEC3F v8 = SFVEC3F( v4.x, v4.y, maxZ );

 TRIANGLE* newTriangle3 = new TRIANGLE( v7, v6, v5 );
 TRIANGLE* newTriangle4 = new TRIANGLE( v5, v8, v7 );

 m_objectContainer.Add( newTriangle3 );
 m_objectContainer.Add( newTriangle4 );

 newTriangle3->SetMaterial( &m_materials.m_Floor );
 newTriangle4->SetMaterial( &m_materials.m_Floor );

 newTriangle3->SetColor( backgroundColor );
 newTriangle4->SetColor( backgroundColor );
 }
 }
 }

 // Init initial lights
 for( LIGHT* light : m_lights )
 delete light;

 m_lights.clear();

 auto IsColorZero =
 []( const SFVEC3F& aSource )
 {
 return ( ( aSource.r < ( 1.0f / 255.0f ) ) && ( aSource.g < ( 1.0f / 255.0f ) )
 && ( aSource.b < ( 1.0f / 255.0f ) ) );
 };

 m_cameraLight = new DIRECTIONAL_LIGHT( SFVEC3F( 0.0f, 0.0f, 0.0f ),
 m_boardAdapter.m_RtCameraLightColor );
 m_cameraLight->SetCastShadows( false );

 if( !IsColorZero( m_boardAdapter.m_RtCameraLightColor ) )
 m_lights.push_back( m_cameraLight );

 const SFVEC3F& boardCenter = m_boardAdapter.GetBBox().GetCenter();

 if( !IsColorZero( m_boardAdapter.m_RtLightColorTop ) )
 {
 m_lights.push_back( new POINT_LIGHT( SFVEC3F( boardCenter.x, boardCenter.y,
 +RANGE_SCALE_3D * 2.0f ),
 m_boardAdapter.m_RtLightColorTop ) );
 }

 if( !IsColorZero( m_boardAdapter.m_RtLightColorBottom ) )
 {
 m_lights.push_back( new POINT_LIGHT( SFVEC3F( boardCenter.x, boardCenter.y,
 -RANGE_SCALE_3D * 2.0f ),
 m_boardAdapter.m_RtLightColorBottom ) );
 }

 wxASSERT( m_boardAdapter.m_RtLightColor.size()
 == m_boardAdapter.m_RtLightSphericalCoords.size() );

 for( size_t i = 0; i < m_boardAdapter.m_RtLightColor.size(); ++i )
 {
 if( !IsColorZero( m_boardAdapter.m_RtLightColor[i] ) )
 {
 const SFVEC2F sc = m_boardAdapter.m_RtLightSphericalCoords[i];

 m_lights.push_back( new DIRECTIONAL_LIGHT(
 SphericalToCartesian( glm::pi<float>() * sc.x, glm::pi<float>() * sc.y ),
 m_boardAdapter.m_RtLightColor[i] ) );
 }
 }
 }

 // Set min. and max. zoom range. This doesn't really fit here, but moving this outside of this
 // class would require reimplementing bounding box calculation (feel free to do this if you
 // have time and patience).
 if( m_objectContainer.GetList().size() > 0 )
 {
 float ratio =
 std::max( 1.0f, m_objectContainer.GetBBox().GetMaxDimension() / RANGE_SCALE_3D );
 m_camera.SetMaxZoom( m_camera.GetMaxZoom() * ratio );

 m_camera.SetMinZoom( static_cast<float>( MIN_DISTANCE_IU * m_boardAdapter.BiuTo3dUnits()
 / -m_camera.GetCameraInitPos().z ) );
 }

 // Create an accelerator
 delete m_accelerator;
 m_accelerator = new BVH_PBRT( m_objectContainer, 8, SPLITMETHOD::MIDDLE );

 if( aStatusReporter )
 {
 // Calculation time in seconds
 double calculation_time = (double) GetRunningMicroSecs() - stats_startReloadTime / 1e6;

 aStatusReporter->Report( wxString::Format( _( "Reload time %.3f s" ), calculation_time ) );
 }
}


void RENDER_3D_RAYTRACE::insertHole( const PCB_VIA* aVia )
{
 PCB_LAYER_ID top_layer, bottom_layer;
 int radiusBUI = ( aVia->GetDrillValue() / 2 );

 aVia->LayerPair( &top_layer, &bottom_layer );

 float topZ = m_boardAdapter.GetLayerBottomZPos( top_layer )
 + m_boardAdapter.GetCopperThickness();

 float botZ = m_boardAdapter.GetLayerBottomZPos( bottom_layer )
 - m_boardAdapter.GetCopperThickness();

 const SFVEC2F center = SFVEC2F( aVia->GetStart().x * m_boardAdapter.BiuTo3dUnits(),
 -aVia->GetStart().y * m_boardAdapter.BiuTo3dUnits() );

 RING_2D* ring = new RING_2D( center, radiusBUI * m_boardAdapter.BiuTo3dUnits(),
 ( radiusBUI + m_boardAdapter.GetHolePlatingThickness() )
 * m_boardAdapter.BiuTo3dUnits(), *aVia );

 m_containerWithObjectsToDelete.Add( ring );

 LAYER_ITEM* objPtr = new LAYER_ITEM( ring, topZ, botZ );

 objPtr->SetMaterial( &m_materials.m_Copper );

 if( m_boardAdapter.GetFlag( FL_USE_REALISTIC_MODE ) )
 objPtr->SetColor( ConvertSRGBToLinear( m_boardAdapter.m_CopperColor ) );
 else if( aVia->GetViaType() == VIATYPE::MICROVIA )
 objPtr->SetColor( ConvertSRGBToLinear( m_boardAdapter.GetItemColor( LAYER_VIA_MICROVIA ) ) );
 else if( aVia->GetViaType() == VIATYPE::BLIND_BURIED )
 objPtr->SetColor( ConvertSRGBToLinear( m_boardAdapter.GetItemColor( LAYER_VIA_BBLIND ) ) );
 else
 objPtr->SetColor( ConvertSRGBToLinear( m_boardAdapter.GetItemColor( LAYER_VIAS ) ) );

 m_objectContainer.Add( objPtr );
}


void RENDER_3D_RAYTRACE::insertHole( const PAD* aPad )
{
 const OBJECT_2D* object2d_A = nullptr;

 SFVEC3F objColor;

 if( m_boardAdapter.GetFlag( FL_USE_REALISTIC_MODE ) )
 objColor = m_boardAdapter.m_CopperColor;
 else
 objColor = m_boardAdapter.GetItemColor( LAYER_PADS_TH );

 const wxSize drillsize = aPad->GetDrillSize();
 const bool hasHole = drillsize.x && drillsize.y;

 if( !hasHole )
 return;

 CONST_LIST_OBJECT2D antiOutlineIntersectionList;

 const float topZ = m_boardAdapter.GetLayerBottomZPos( F_Cu )
 + m_boardAdapter.GetCopperThickness() * 0.99f;

 const float botZ = m_boardAdapter.GetLayerBottomZPos( B_Cu )
 - m_boardAdapter.GetCopperThickness() * 0.99f;

 if( drillsize.x == drillsize.y ) // usual round hole
 {
 SFVEC2F center = SFVEC2F( aPad->GetPosition().x * m_boardAdapter.BiuTo3dUnits(),
 -aPad->GetPosition().y * m_boardAdapter.BiuTo3dUnits() );

 int innerRadius = drillsize.x / 2;
 int outerRadius = innerRadius + m_boardAdapter.GetHolePlatingThickness();

 RING_2D* ring = new RING_2D( center, innerRadius * m_boardAdapter.BiuTo3dUnits(),
 outerRadius * m_boardAdapter.BiuTo3dUnits(), *aPad );

 m_containerWithObjectsToDelete.Add( ring );

 object2d_A = ring;

 // If the object (ring) is intersected by an antioutline board,
 // it will use instead a CSG of two circles.
 if( object2d_A && !m_antioutlineBoard2dObjects->GetList().empty() )
 {
 m_antioutlineBoard2dObjects->GetIntersectingObjects( object2d_A->GetBBox(),
 antiOutlineIntersectionList );
 }

 if( !antiOutlineIntersectionList.empty() )
 {
 FILLED_CIRCLE_2D* innerCircle = new FILLED_CIRCLE_2D(
 center, innerRadius * m_boardAdapter.BiuTo3dUnits(), *aPad );

 FILLED_CIRCLE_2D* outterCircle = new FILLED_CIRCLE_2D(
 center, outerRadius * m_boardAdapter.BiuTo3dUnits(), *aPad );
 std::vector<const OBJECT_2D*>* object2d_B = new std::vector<const OBJECT_2D*>();
 object2d_B->push_back( innerCircle );

 LAYER_ITEM_2D* itemCSG2d = new LAYER_ITEM_2D( outterCircle, object2d_B, CSGITEM_FULL,
 *aPad );

 m_containerWithObjectsToDelete.Add( itemCSG2d );
 m_containerWithObjectsToDelete.Add( innerCircle );
 m_containerWithObjectsToDelete.Add( outterCircle );

 object2d_A = itemCSG2d;
 }
 }
 else // Oblong hole
 {
 wxPoint ends_offset;
 int width;

 if( drillsize.x > drillsize.y ) // Horizontal oval
 {
 ends_offset.x = ( drillsize.x - drillsize.y ) / 2;
 width = drillsize.y;
 }
 else // Vertical oval
 {
 ends_offset.y = ( drillsize.y - drillsize.x ) / 2;
 width = drillsize.x;
 }

 RotatePoint( &ends_offset, aPad->GetOrientation() );

 wxPoint start = aPad->GetPosition() + ends_offset;
 wxPoint end = aPad->GetPosition() - ends_offset;

 ROUND_SEGMENT_2D* innerSeg =
 new ROUND_SEGMENT_2D( SFVEC2F( start.x * m_boardAdapter.BiuTo3dUnits(),
 -start.y * m_boardAdapter.BiuTo3dUnits() ),
 SFVEC2F( end.x * m_boardAdapter.BiuTo3dUnits(),
 -end.y * m_boardAdapter.BiuTo3dUnits() ),
 width * m_boardAdapter.BiuTo3dUnits(), *aPad );

 ROUND_SEGMENT_2D* outerSeg =
 new ROUND_SEGMENT_2D( SFVEC2F( start.x * m_boardAdapter.BiuTo3dUnits(),
 -start.y * m_boardAdapter.BiuTo3dUnits() ),
 SFVEC2F( end.x * m_boardAdapter.BiuTo3dUnits(),
 -end.y * m_boardAdapter.BiuTo3dUnits() ),
 ( width + m_boardAdapter.GetHolePlatingThickness() * 2 )
 * m_boardAdapter.BiuTo3dUnits(), *aPad );

 // NOTE: the round segment width is the "diameter", so we double the thickness
 std::vector<const OBJECT_2D*>* object2d_B = new std::vector<const OBJECT_2D*>();
 object2d_B->push_back( innerSeg );

 LAYER_ITEM_2D* itemCSG2d = new LAYER_ITEM_2D( outerSeg, object2d_B, CSGITEM_FULL, *aPad );

 m_containerWithObjectsToDelete.Add( itemCSG2d );
 m_containerWithObjectsToDelete.Add( innerSeg );
 m_containerWithObjectsToDelete.Add( outerSeg );

 object2d_A = itemCSG2d;

 if( object2d_A && !m_antioutlineBoard2dObjects->GetList().empty() )
 {
 m_antioutlineBoard2dObjects->GetIntersectingObjects( object2d_A->GetBBox(),
 antiOutlineIntersectionList );
 }
 }

 if( object2d_A )
 {
 std::vector<const OBJECT_2D*>* object2d_B = new std::vector<const OBJECT_2D*>();

 // Check if there are any other THT that intersects this hole
 // It will use the non inflated holes
 if( !m_boardAdapter.GetThroughHoleIds().GetList().empty() )
 {
 CONST_LIST_OBJECT2D intersecting;

 m_boardAdapter.GetThroughHoleIds().GetIntersectingObjects( object2d_A->GetBBox(),
 intersecting );

 for( const OBJECT_2D* hole2d : intersecting )
 {
 if( object2d_A->Intersects( hole2d->GetBBox() ) )
 object2d_B->push_back( hole2d );
 }
 }

 for( const OBJECT_2D* obj : antiOutlineIntersectionList )
 object2d_B->push_back( obj );

 if( object2d_B->empty() )
 {
 delete object2d_B;
 object2d_B = CSGITEM_EMPTY;
 }

 if( object2d_B == CSGITEM_EMPTY )
 {
 LAYER_ITEM* objPtr = new LAYER_ITEM( object2d_A, topZ, botZ );

 objPtr->SetMaterial( &m_materials.m_Copper );
 objPtr->SetColor( ConvertSRGBToLinear( objColor ) );
 m_objectContainer.Add( objPtr );
 }
 else
 {
 LAYER_ITEM_2D* itemCSG2d = new LAYER_ITEM_2D( object2d_A, object2d_B, CSGITEM_FULL,
 *aPad );

 m_containerWithObjectsToDelete.Add( itemCSG2d );

 LAYER_ITEM* objPtr = new LAYER_ITEM( itemCSG2d, topZ, botZ );

 objPtr->SetMaterial( &m_materials.m_Copper );
 objPtr->SetColor( ConvertSRGBToLinear( objColor ) );

 m_objectContainer.Add( objPtr );
 }
 }
}


void RENDER_3D_RAYTRACE::addPadsAndVias()
{
 if( !m_boardAdapter.GetBoard() )
 return;

 // Insert plated vertical holes inside the board

 // Insert vias holes (vertical cylinders)
 for( PCB_TRACK* track : m_boardAdapter.GetBoard()->Tracks() )
 {
 if( track->Type() == PCB_VIA_T )
 {
 const PCB_VIA* via = static_cast<const PCB_VIA*>( track );
 insertHole( via );
 }
 }

 // Insert pads holes (vertical cylinders)
 for( FOOTPRINT* footprint : m_boardAdapter.GetBoard()->Footprints() )
 {
 for( PAD* pad : footprint->Pads() )
 {
 if( pad->GetAttribute() != PAD_ATTRIB::NPTH )
 insertHole( pad );
 }
 }
}


void RENDER_3D_RAYTRACE::load3DModels( CONTAINER_3D& aDstContainer, bool aSkipMaterialInformation )
{
 if( !m_boardAdapter.GetBoard() )
 return;

 if( !m_boardAdapter.GetFlag( FL_FP_ATTRIBUTES_NORMAL )
 && !m_boardAdapter.GetFlag( FL_FP_ATTRIBUTES_NORMAL_INSERT )
 && !m_boardAdapter.GetFlag( FL_FP_ATTRIBUTES_VIRTUAL ) )
 {
 return;
 }

 // Go for all footprints
 for( FOOTPRINT* fp : m_boardAdapter.GetBoard()->Footprints() )
 {
 if( !fp->Models().empty()
 && m_boardAdapter.IsFootprintShown( (FOOTPRINT_ATTR_T) fp->GetAttributes() ) )
 {
 double zpos = m_boardAdapter.GetFootprintZPos( fp->IsFlipped() );

 wxPoint pos = fp->GetPosition();

 glm::mat4 fpMatrix = glm::mat4( 1.0f );

 fpMatrix = glm::translate( fpMatrix,
 SFVEC3F( pos.x * m_boardAdapter.BiuTo3dUnits(),
 -pos.y * m_boardAdapter.BiuTo3dUnits(),
 zpos ) );

 if( fp->GetOrientation() )
 {
 fpMatrix = glm::rotate( fpMatrix,
 ( (float) ( fp->GetOrientation() / 10.0f ) / 180.0f ) * glm::pi<float>(),
 SFVEC3F( 0.0f, 0.0f, 1.0f ) );
 }

 if( fp->IsFlipped() )
 {
 fpMatrix = glm::rotate( fpMatrix, glm::pi<float>(), SFVEC3F( 0.0f, 1.0f, 0.0f ) );

 fpMatrix = glm::rotate( fpMatrix, glm::pi<float>(), SFVEC3F( 0.0f, 0.0f, 1.0f ) );
 }

 const double modelunit_to_3d_units_factor =
 m_boardAdapter.BiuTo3dUnits() * UNITS3D_TO_UNITSPCB;

 fpMatrix = glm::scale(
 fpMatrix, SFVEC3F( modelunit_to_3d_units_factor, modelunit_to_3d_units_factor,
 modelunit_to_3d_units_factor ) );

 BOARD_ITEM* boardItem = dynamic_cast<BOARD_ITEM*>( fp );

 // Get the list of model files for this model
 S3D_CACHE* cacheMgr = m_boardAdapter.Get3dCacheManager();
 auto sM = fp->Models().begin();
 auto eM = fp->Models().end();

 while( sM != eM )
 {
 if( ( static_cast<float>( sM->m_Opacity ) > FLT_EPSILON )
 && ( sM->m_Show && !sM->m_Filename.empty() ) )
 {
 // get it from cache
 const S3DMODEL* modelPtr = cacheMgr->GetModel( sM->m_Filename );

 // only add it if the return is not NULL.
 if( modelPtr )
 {
 glm::mat4 modelMatrix = fpMatrix;

 modelMatrix = glm::translate( modelMatrix,
 SFVEC3F( sM->m_Offset.x, sM->m_Offset.y, sM->m_Offset.z ) );

 modelMatrix = glm::rotate( modelMatrix,
 (float) -( sM->m_Rotation.z / 180.0f ) * glm::pi<float>(),
 SFVEC3F( 0.0f, 0.0f, 1.0f ) );

 modelMatrix = glm::rotate( modelMatrix,
 (float) -( sM->m_Rotation.y / 180.0f ) * glm::pi<float>(),
 SFVEC3F( 0.0f, 1.0f, 0.0f ) );

 modelMatrix = glm::rotate( modelMatrix,
 (float) -( sM->m_Rotation.x / 180.0f ) * glm::pi<float>(),
 SFVEC3F( 1.0f, 0.0f, 0.0f ) );

 modelMatrix = glm::scale( modelMatrix,
 SFVEC3F( sM->m_Scale.x, sM->m_Scale.y, sM->m_Scale.z ) );

 addModels( aDstContainer, modelPtr, modelMatrix, (float) sM->m_Opacity,
 aSkipMaterialInformation, boardItem );
 }
 }

 ++sM;
 }
 }
 }
}


MODEL_MATERIALS* RENDER_3D_RAYTRACE::getModelMaterial( const S3DMODEL* a3DModel )
{
 MODEL_MATERIALS* materialVector;

 // Try find if the materials already exists in the map list
 if( m_modelMaterialMap.find( a3DModel ) != m_modelMaterialMap.end() )
 {
 // Found it, so get the pointer
 materialVector = &m_modelMaterialMap[a3DModel];
 }
 else
 {
 // Materials was not found in the map, so it will create a new for
 // this model.

 m_modelMaterialMap[a3DModel] = MODEL_MATERIALS();
 materialVector = &m_modelMaterialMap[a3DModel];

 materialVector->resize( a3DModel->m_MaterialsSize );

 for( unsigned int imat = 0; imat < a3DModel->m_MaterialsSize; ++imat )
 {
 if( m_boardAdapter.GetMaterialMode() == MATERIAL_MODE::NORMAL )
 {
 const SMATERIAL& material = a3DModel->m_Materials[imat];

 // http://www.fooplot.com/#W3sidHlwZSI6MCwiZXEiOiJtaW4oc3FydCh4LTAuMzUpKjAuNDAtMC4wNSwxLjApIiwiY29sb3IiOiIjMDAwMDAwIn0seyJ0eXBlIjoxMDAwLCJ3aW5kb3ciOlsiMC4wNzA3NzM2NzMyMzY1OTAxMiIsIjEuNTY5NTcxNjI5MjI1NDY5OCIsIi0wLjI3NDYzNTMyMTc1OTkyOTMiLCIwLjY0NzcwMTg4MTkyNTUzNjIiXSwic2l6ZSI6WzY0NCwzOTRdfV0-

 float reflectionFactor = 0.0f;

 if( ( material.m_Shininess - 0.35f ) > FLT_EPSILON )
 {
 reflectionFactor = glm::clamp(
 glm::sqrt( ( material.m_Shininess - 0.35f ) ) * 0.40f - 0.05f, 0.0f,
 0.5f );
 }

 BLINN_PHONG_MATERIAL& blinnMaterial = ( *materialVector )[imat];

 blinnMaterial = BLINN_PHONG_MATERIAL( ConvertSRGBToLinear( material.m_Ambient ),
 ConvertSRGBToLinear( material.m_Emissive ),
 ConvertSRGBToLinear( material.m_Specular ), material.m_Shininess * 180.0f,
 material.m_Transparency, reflectionFactor );

 if( m_boardAdapter.GetFlag( FL_RENDER_RAYTRACING_PROCEDURAL_TEXTURES ) )
 {
 // Guess material type and apply a normal perturbator
 if( ( RGBtoGray( material.m_Diffuse ) < 0.3f )
 && ( material.m_Shininess < 0.36f )
 && ( material.m_Transparency == 0.0f )
 && ( ( glm::abs( material.m_Diffuse.r - material.m_Diffuse.g ) < 0.15f )
 && ( glm::abs( material.m_Diffuse.b - material.m_Diffuse.g )
 < 0.15f )
 && ( glm::abs( material.m_Diffuse.r - material.m_Diffuse.b )
 < 0.15f ) ) )
 {
 // This may be a black plastic..
 blinnMaterial.SetGenerator( &m_plasticMaterial );
 }
 else
 {
 if( ( RGBtoGray( material.m_Diffuse ) > 0.3f )
 && ( material.m_Shininess < 0.30f )
 && ( material.m_Transparency == 0.0f )
 && ( ( glm::abs( material.m_Diffuse.r - material.m_Diffuse.g ) > 0.25f )
 || ( glm::abs( material.m_Diffuse.b - material.m_Diffuse.g ) > 0.25f )
 || ( glm::abs( material.m_Diffuse.r - material.m_Diffuse.b )
 > 0.25f ) ) )
 {
 // This may be a color plastic ...
 blinnMaterial.SetGenerator( &m_shinyPlasticMaterial );
 }
 else
 {
 if( ( RGBtoGray( material.m_Diffuse ) > 0.6f )
 && ( material.m_Shininess > 0.35f )
 && ( material.m_Transparency == 0.0f )
 && ( ( glm::abs( material.m_Diffuse.r - material.m_Diffuse.g )
 < 0.40f )
 && ( glm::abs( material.m_Diffuse.b - material.m_Diffuse.g )
 < 0.40f )
 && ( glm::abs( material.m_Diffuse.r - material.m_Diffuse.b )
 < 0.40f ) ) )
 {
 // This may be a brushed metal
 blinnMaterial.SetGenerator( &m_brushedMetalMaterial );
 }
 }
 }
 }
 }
 else
 {
 ( *materialVector )[imat] = BLINN_PHONG_MATERIAL(
 SFVEC3F( 0.2f ), SFVEC3F( 0.0f ), SFVEC3F( 0.0f ), 0.0f, 0.0f, 0.0f );
 }
 }
 }

 return materialVector;
}


void RENDER_3D_RAYTRACE::addModels( CONTAINER_3D& aDstContainer, const S3DMODEL* a3DModel,
 const glm::mat4& aModelMatrix, float aFPOpacity,
 bool aSkipMaterialInformation, BOARD_ITEM* aBoardItem )
{
 // Validate a3DModel pointers
 wxASSERT( a3DModel != nullptr );

 if( a3DModel == nullptr )
 return;

 wxASSERT( a3DModel->m_Materials != nullptr );
 wxASSERT( a3DModel->m_Meshes != nullptr );
 wxASSERT( a3DModel->m_MaterialsSize > 0 );
 wxASSERT( a3DModel->m_MeshesSize > 0 );
 wxASSERT( aFPOpacity > 0.0f );
 wxASSERT( aFPOpacity <= 1.0f );

 if( aFPOpacity > 1.0f )
 {
 aFPOpacity = 1.0f;
 }

 if( ( a3DModel->m_Materials != nullptr ) && ( a3DModel->m_Meshes != nullptr )
 && ( a3DModel->m_MaterialsSize > 0 ) && ( a3DModel->m_MeshesSize > 0 ) )
 {
 MODEL_MATERIALS* materialVector = nullptr;

 if( !aSkipMaterialInformation )
 {
 materialVector = getModelMaterial( a3DModel );
 }

 const glm::mat3 normalMatrix = glm::transpose( glm::inverse( glm::mat3( aModelMatrix ) ) );

 for( unsigned int mesh_i = 0; mesh_i < a3DModel->m_MeshesSize; ++mesh_i )
 {
 const SMESH& mesh = a3DModel->m_Meshes[mesh_i];

 // Validate the mesh pointers
 wxASSERT( mesh.m_Positions != nullptr );
 wxASSERT( mesh.m_FaceIdx != nullptr );
 wxASSERT( mesh.m_Normals != nullptr );
 wxASSERT( mesh.m_FaceIdxSize > 0 );
 wxASSERT( ( mesh.m_FaceIdxSize % 3 ) == 0 );


 if( ( mesh.m_Positions != nullptr ) && ( mesh.m_Normals != nullptr )
 && ( mesh.m_FaceIdx != nullptr ) && ( mesh.m_FaceIdxSize > 0 )
 && ( mesh.m_VertexSize > 0 ) && ( ( mesh.m_FaceIdxSize % 3 ) == 0 )
 && ( mesh.m_MaterialIdx < a3DModel->m_MaterialsSize ) )
 {
 float fpTransparency;
 const BLINN_PHONG_MATERIAL* blinn_material;

 if( !aSkipMaterialInformation )
 {
 blinn_material = &( *materialVector )[mesh.m_MaterialIdx];

 fpTransparency =
 1.0f - ( ( 1.0f - blinn_material->GetTransparency() ) * aFPOpacity );
 }

 // Add all face triangles
 for( unsigned int faceIdx = 0; faceIdx < mesh.m_FaceIdxSize; faceIdx += 3 )
 {
 const unsigned int idx0 = mesh.m_FaceIdx[faceIdx + 0];
 const unsigned int idx1 = mesh.m_FaceIdx[faceIdx + 1];
 const unsigned int idx2 = mesh.m_FaceIdx[faceIdx + 2];

 wxASSERT( idx0 < mesh.m_VertexSize );
 wxASSERT( idx1 < mesh.m_VertexSize );
 wxASSERT( idx2 < mesh.m_VertexSize );

 if( ( idx0 < mesh.m_VertexSize ) && ( idx1 < mesh.m_VertexSize )
 && ( idx2 < mesh.m_VertexSize ) )
 {
 const SFVEC3F& v0 = mesh.m_Positions[idx0];
 const SFVEC3F& v1 = mesh.m_Positions[idx1];
 const SFVEC3F& v2 = mesh.m_Positions[idx2];

 const SFVEC3F& n0 = mesh.m_Normals[idx0];
 const SFVEC3F& n1 = mesh.m_Normals[idx1];
 const SFVEC3F& n2 = mesh.m_Normals[idx2];

 // Transform vertex with the model matrix
 const SFVEC3F vt0 = SFVEC3F( aModelMatrix * glm::vec4( v0, 1.0f ) );
 const SFVEC3F vt1 = SFVEC3F( aModelMatrix * glm::vec4( v1, 1.0f ) );
 const SFVEC3F vt2 = SFVEC3F( aModelMatrix * glm::vec4( v2, 1.0f ) );

 const SFVEC3F nt0 = glm::normalize( SFVEC3F( normalMatrix * n0 ) );
 const SFVEC3F nt1 = glm::normalize( SFVEC3F( normalMatrix * n1 ) );
 const SFVEC3F nt2 = glm::normalize( SFVEC3F( normalMatrix * n2 ) );

 TRIANGLE* newTriangle = new TRIANGLE( vt0, vt2, vt1, nt0, nt2, nt1 );

 newTriangle->SetBoardItem( aBoardItem );

 aDstContainer.Add( newTriangle );

 if( !aSkipMaterialInformation )
 {
 newTriangle->SetMaterial( blinn_material );
 newTriangle->SetModelTransparency( fpTransparency );

 if( mesh.m_Color == nullptr )
 {
 const SFVEC3F diffuseColor =
 a3DModel->m_Materials[mesh.m_MaterialIdx].m_Diffuse;

 if( m_boardAdapter.GetMaterialMode() == MATERIAL_MODE::CAD_MODE )
 newTriangle->SetColor( ConvertSRGBToLinear(
 MaterialDiffuseToColorCAD( diffuseColor ) ) );
 else
 newTriangle->SetColor( ConvertSRGBToLinear( diffuseColor ) );
 }
 else
 {
 if( m_boardAdapter.GetMaterialMode() == MATERIAL_MODE::CAD_MODE )
 newTriangle->SetColor(
  ConvertSRGBToLinear( MaterialDiffuseToColorCAD(
 mesh.m_Color[idx0] ) ),
 ConvertSRGBToLinear( MaterialDiffuseToColorCAD(
 mesh.m_Color[idx1] ) ),
 ConvertSRGBToLinear( MaterialDiffuseToColorCAD(
 mesh.m_Color[idx2] ) ) );
 else
 newTriangle->SetColor(
 ConvertSRGBToLinear( mesh.m_Color[idx0] ),
 ConvertSRGBToLinear( mesh.m_Color[idx1] ),
 ConvertSRGBToLinear( mesh.m_Color[idx2] ) );
 }
 }
 }
 }
 }
 }
 }
}