/*
* Function Draw3D_ZaxisOblongCylinder:
* draw a segment with an oblong hole.
* Used to draw oblong holes
* If aHeight = height of the cylinder is 0, only one ring will be drawn
* If aThickness = 0, only one cylinder will be drawn
*/
void Draw3D_ZaxisOblongCylinder( wxPoint aAxis1Pos, wxPoint aAxis2Pos,
int aRadius, int aHeight, int aThickness,
int aZpos, double aBiuTo3DUnits )
{
const int slice = SEGM_PER_CIRCLE;
// Build the points to approximate oblong cylinder by segments
CPOLYGONS_LIST outer_cornerBuffer;
int segm_width = (aRadius * 2) + aThickness;
TransformRoundedEndsSegmentToPolygon( outer_cornerBuffer, aAxis1Pos,
aAxis2Pos, slice, segm_width );
// Draw the oblong outer cylinder
if( aHeight )
Draw3D_VerticalPolygonalCylinder( outer_cornerBuffer, aHeight, aZpos,
false, aBiuTo3DUnits );
if( aThickness )
{
CPOLYGONS_LIST inner_cornerBuffer;
segm_width = aRadius * 2;
TransformRoundedEndsSegmentToPolygon( inner_cornerBuffer, aAxis1Pos,
aAxis2Pos, slice, segm_width );
// Draw the oblong inner cylinder
if( aHeight )
Draw3D_VerticalPolygonalCylinder( inner_cornerBuffer, aHeight,
aZpos, true, aBiuTo3DUnits );
// Build the horizontal full polygon shape
// (outer polygon shape - inner polygon shape)
outer_cornerBuffer.Append( inner_cornerBuffer );
CPOLYGONS_LIST polygon;
ConvertPolysListWithHolesToOnePolygon( outer_cornerBuffer, polygon );
// draw top (front) horizontal side (ring)
SetNormalZpos();
Draw3D_SolidHorizontalPolyPolygons( polygon, aZpos + aHeight, 0, aBiuTo3DUnits, false );
if( aHeight )
{
// draw bottom (back) horizontal side (ring)
SetNormalZneg();
Draw3D_SolidHorizontalPolyPolygons( polygon, aZpos, 0, aBiuTo3DUnits, false );
}
}
SetNormalZpos();
}
/* draw a cylinder (a tube) using 3D primitives.
* the cylinder axis is parallel to the Z axis
* If aHeight = height of the cylinder is 0, only one ring will be drawn
* If aThickness = 0, only one cylinder will be drawn
*/
void Draw3D_ZaxisCylinder( wxPoint aCenterPos, int aRadius,
int aHeight, int aThickness,
int aZpos, double aBiuTo3DUnits )
{
const int slice = SEGM_PER_CIRCLE;
CPOLYGONS_LIST outer_cornerBuffer;
TransformCircleToPolygon( outer_cornerBuffer, aCenterPos,
aRadius + (aThickness / 2), slice );
std::vector<S3D_VERTEX> coords;
coords.resize( 4 );
CPOLYGONS_LIST inner_cornerBuffer;
if( aThickness ) // build the the vertical inner polygon (hole)
TransformCircleToPolygon( inner_cornerBuffer, aCenterPos,
aRadius - (aThickness / 2), slice );
if( aHeight )
{
// Draw the vertical outer side
Draw3D_VerticalPolygonalCylinder( outer_cornerBuffer,
aHeight, aZpos, false, aBiuTo3DUnits );
if( aThickness )
// Draws the vertical inner side (hole)
Draw3D_VerticalPolygonalCylinder( inner_cornerBuffer,
aHeight, aZpos, true, aBiuTo3DUnits );
}
if( aThickness )
{
// draw top (front) and bottom (back) horizontal sides (rings)
SetNormalZpos();
outer_cornerBuffer.Append( inner_cornerBuffer );
CPOLYGONS_LIST polygon;
ConvertPolysListWithHolesToOnePolygon( outer_cornerBuffer, polygon );
// draw top (front) horizontal ring
Draw3D_SolidHorizontalPolyPolygons( polygon, aZpos + aHeight, 0, aBiuTo3DUnits, false );
if( aHeight )
{
// draw bottom (back) horizontal ring
SetNormalZneg();
Draw3D_SolidHorizontalPolyPolygons( polygon, aZpos, 0, aBiuTo3DUnits, false );
}
}
SetNormalZpos();
}
/* draw the solid polygon found in aPolysList
* The first polygon is the main polygon, others are holes
* See Draw3D_SolidHorizontalPolyPolygons for more info
*/
void Draw3D_SolidHorizontalPolygonWithHoles( const CPOLYGONS_LIST& aPolysList,
int aZpos, int aThickness,
double aBiuTo3DUnits, bool aUseTextures )
{
CPOLYGONS_LIST polygon;
ConvertPolysListWithHolesToOnePolygon( aPolysList, polygon );
Draw3D_SolidHorizontalPolyPolygons( polygon, aZpos, aThickness, aBiuTo3DUnits, aUseTextures );
}
/* draw a thick segment using 3D primitives, in a XY plane
* wxPoint aStart, wxPoint aEnd = YX position of end in board units
* aWidth = width of segment in board units
* aThickness = thickness of segment in board units
* aZpos = z position of segment in board units
*/
void Draw3D_SolidSegment( const wxPoint& aStart, const wxPoint& aEnd,
int aWidth, int aThickness, int aZpos, double aBiuTo3DUnits )
{
CPOLYGONS_LIST cornerBuffer;
const int slice = SEGM_PER_CIRCLE;
TransformRoundedEndsSegmentToPolygon( cornerBuffer, aStart, aEnd, slice, aWidth );
Draw3D_SolidHorizontalPolyPolygons( cornerBuffer, aZpos, aThickness, aBiuTo3DUnits, false );
}
void Draw3D_ArcSegment( const wxPoint& aCenterPos, const wxPoint& aStartPoint,
double aArcAngle, int aWidth, int aThickness,
int aZpos, double aBiuTo3DUnits )
{
const int slice = SEGM_PER_CIRCLE;
CPOLYGONS_LIST cornerBuffer;
TransformArcToPolygon( cornerBuffer, aCenterPos, aStartPoint, aArcAngle,
slice, aWidth );
Draw3D_SolidHorizontalPolyPolygons( cornerBuffer, aZpos, aThickness, aBiuTo3DUnits, false );
}
void EDA_3D_CANVAS::buildTechLayers3DView( REPORTER* aErrorMessages, REPORTER* aActivity )
{
BOARD* pcb = GetBoard();
bool useTextures = isRealisticMode() && isEnabled( FL_RENDER_TEXTURES );
// Number of segments to draw a circle using segments
const int segcountforcircle = 18;
double correctionFactor = 1.0 / cos( M_PI / (segcountforcircle * 2) );
const int segcountLowQuality = 12; // segments to draw a circle with low quality
// to reduce time calculations
// for holes and items which do not need
// a fine representation
double correctionFactorLQ = 1.0 / cos( M_PI / (segcountLowQuality * 2) );
// segments to draw a circle to build texts. Is is used only to build
// the shape of each segment of the stroke font, therefore no need to have
// many segments per circle.
const int segcountInStrokeFont = 8;
SHAPE_POLY_SET bufferPolys;
SHAPE_POLY_SET allLayerHoles; // Contains through holes, calculated only once
SHAPE_POLY_SET bufferPcbOutlines; // stores the board main outlines
// Build a polygon from edge cut items
wxString msg;
if( !pcb->GetBoardPolygonOutlines( bufferPcbOutlines, allLayerHoles, &msg ) )
{
if( aErrorMessages )
{
msg << wxT("\n") <<
_("Unable to calculate the board outlines.\n"
"Therefore use the board boundary box.") << wxT("\n\n");
aErrorMessages->Report( msg, REPORTER::RPT_WARNING );
}
}
// Build board holes, with no optimization of large holes shape.
buildBoardThroughHolesPolygonList( allLayerHoles, segcountLowQuality, false );
// draw graphic items, on technical layers
static const LAYER_ID teckLayerList[] = {
B_Adhes,
F_Adhes,
B_Paste,
F_Paste,
B_SilkS,
F_SilkS,
B_Mask,
F_Mask,
};
// User layers are not drawn here, only technical layers
for( LSEQ seq = LSET::AllTechMask().Seq( teckLayerList, DIM( teckLayerList ) ); seq; ++seq )
{
LAYER_ID layer = *seq;
if( !is3DLayerEnabled( layer ) )
continue;
if( layer == Edge_Cuts && isEnabled( FL_SHOW_BOARD_BODY ) )
continue;
if( aActivity )
aActivity->Report( wxString::Format( _( "Build layer %s" ), LSET::Name( layer ) ) );
bufferPolys.RemoveAllContours();
for( BOARD_ITEM* item = pcb->m_Drawings; item; item = item->Next() )
{
if( !item->IsOnLayer( layer ) )
continue;
switch( item->Type() )
{
case PCB_LINE_T:
( (DRAWSEGMENT*) item )->TransformShapeWithClearanceToPolygon(
bufferPolys, 0, segcountforcircle, correctionFactor );
break;
case PCB_TEXT_T:
( (TEXTE_PCB*) item )->TransformShapeWithClearanceToPolygonSet(
bufferPolys, 0, segcountLowQuality, 1.0 );
break;
default:
break;
}
}
for( MODULE* module = pcb->m_Modules; module; module = module->Next() )
{
if( layer == F_SilkS || layer == B_SilkS )
{
// On silk screen layers, the pad shape is only the pad outline
// never a filled shape
D_PAD* pad = module->Pads();
int linewidth = g_DrawDefaultLineThickness;
for( ; pad; pad = pad->Next() )
{
if( !pad->IsOnLayer( layer ) )
continue;
buildPadShapeThickOutlineAsPolygon( pad, bufferPolys,
linewidth, segcountforcircle, correctionFactor );
}
}
else
module->TransformPadsShapesWithClearanceToPolygon( layer,
bufferPolys, 0, segcountforcircle, correctionFactor );
// On tech layers, use a poor circle approximation, only for texts (stroke font)
module->TransformGraphicShapesWithClearanceToPolygonSet( layer,
bufferPolys, 0, segcountforcircle, correctionFactor, segcountInStrokeFont );
}
// Draw non copper zones
if( isEnabled( FL_ZONE ) )
{
for( int ii = 0; ii < pcb->GetAreaCount(); ii++ )
{
ZONE_CONTAINER* zone = pcb->GetArea( ii );
if( !zone->IsOnLayer( layer ) )
continue;
zone->TransformSolidAreasShapesToPolygonSet(
bufferPolys, segcountLowQuality, correctionFactorLQ );
}
}
// bufferPolys contains polygons to merge. Many overlaps .
// Calculate merged polygons and remove pads and vias holes
if( bufferPolys.IsEmpty() )
continue;
// Solder mask layers are "negative" layers.
// Shapes should be removed from the full board area.
if( layer == B_Mask || layer == F_Mask )
{
SHAPE_POLY_SET cuts = bufferPolys;
bufferPolys = bufferPcbOutlines;
cuts.Append(allLayerHoles);
cuts.Simplify();
bufferPolys.BooleanSubtract( cuts );
}
// Remove holes from Solder paste layers and silkscreen
else if( layer == B_Paste || layer == F_Paste
|| layer == B_SilkS || layer == F_SilkS )
{
bufferPolys.BooleanSubtract( allLayerHoles );
}
int thickness = 0;
if( layer != B_Mask && layer != F_Mask )
thickness = GetPrm3DVisu().GetLayerObjectThicknessBIU( layer );
int zpos = GetPrm3DVisu().GetLayerZcoordBIU( layer );
if( layer == Edge_Cuts )
{
thickness = GetPrm3DVisu().GetLayerZcoordBIU( F_Cu )
- GetPrm3DVisu().GetLayerZcoordBIU( B_Cu );
zpos = GetPrm3DVisu().GetLayerZcoordBIU( B_Cu )
+ (thickness / 2);
}
else
{
// for Draw3D_SolidHorizontalPolyPolygons, zpos it the middle between bottom and top
// sides.
// However for top layers, zpos should be the bottom layer pos,
// and for bottom layers, zpos should be the top layer pos.
if( Get3DLayer_Z_Orientation( layer ) > 0 )
zpos += thickness/2;
else
zpos -= thickness/2 ;
}
float zNormal = 1.0f; // When using thickness it will draw first the top and then botton (with z inverted)
// If we are not using thickness, then the znormal must face the layer direction
// because it will draw just one plane
if( !thickness )
zNormal = Get3DLayer_Z_Orientation( layer );
setGLTechLayersColor( layer );
Draw3D_SolidHorizontalPolyPolygons( bufferPolys, zpos,
thickness, GetPrm3DVisu().m_BiuTo3Dunits, useTextures,
zNormal );
}
}
void EDA_3D_CANVAS::buildBoard3DView( GLuint aBoardList, GLuint aBodyOnlyList,
REPORTER* aErrorMessages, REPORTER* aActivity )
{
BOARD* pcb = GetBoard();
// If FL_RENDER_SHOW_HOLES_IN_ZONES is true, holes are correctly removed from copper zones areas.
// If FL_RENDER_SHOW_HOLES_IN_ZONES is false, holes are not removed from copper zones areas,
// but the calculation time is twice shorter.
bool remove_Holes = isEnabled( FL_RENDER_SHOW_HOLES_IN_ZONES );
bool realistic_mode = isRealisticMode();
bool useTextures = isRealisticMode() && isEnabled( FL_RENDER_TEXTURES );
// Number of segments to convert a circle to polygon
// We use 2 values: the first gives a good shape (for instanes rond pads)
// the second is used to speed up calculations, when a poor approximation is acceptable (holes)
const int segcountforcircle = 18;
double correctionFactor = 1.0 / cos( M_PI / (segcountforcircle * 2.0) );
const int segcountLowQuality = 12; // segments to draw a circle with low quality
// to reduce time calculations
// for holes and items which do not need
// a fine representation
double correctionFactorLQ = 1.0 / cos( M_PI / (segcountLowQuality * 2.0) );
SHAPE_POLY_SET bufferPolys; // copper areas: tracks, pads and filled zones areas
// when holes are removed from zones
SHAPE_POLY_SET bufferPcbOutlines; // stores the board main outlines
SHAPE_POLY_SET bufferZonesPolys; // copper filled zones areas
// when holes are not removed from zones
SHAPE_POLY_SET currLayerHoles; // Contains holes for the current layer
SHAPE_POLY_SET allLayerHoles; // Contains holes for all layers
// Build a polygon from edge cut items
wxString msg;
if( !pcb->GetBoardPolygonOutlines( bufferPcbOutlines, allLayerHoles, &msg ) )
{
if( aErrorMessages )
{
msg << wxT("\n") << _("Unable to calculate the board outlines.\n"
"Therefore use the board boundary box.") << wxT("\n\n");
aErrorMessages->Report( msg, REPORTER::RPT_WARNING );
}
}
// Build board holes, with optimization of large holes shape.
buildBoardThroughHolesPolygonList( allLayerHoles, segcountLowQuality, true );
LSET cu_set = LSET::AllCuMask( GetPrm3DVisu().m_CopperLayersCount );
glNewList( aBoardList, GL_COMPILE );
for( LSEQ cu = cu_set.CuStack(); cu; ++cu )
{
LAYER_ID layer = *cu;
// Skip non enabled layers in normal mode,
// and internal layers in realistic mode
if( !is3DLayerEnabled( layer ) )
continue;
if( aActivity )
aActivity->Report( wxString::Format( _( "Build layer %s" ), LSET::Name( layer ) ) );
bufferPolys.RemoveAllContours();
bufferZonesPolys.RemoveAllContours();
currLayerHoles.RemoveAllContours();
// Draw track shapes:
for( TRACK* track = pcb->m_Track; track; track = track->Next() )
{
if( !track->IsOnLayer( layer ) )
continue;
track->TransformShapeWithClearanceToPolygon( bufferPolys,
0, segcountforcircle,
correctionFactor );
// Add blind/buried via holes
if( track->Type() == PCB_VIA_T )
{
VIA *via = static_cast<VIA*>( track );
if( via->GetViaType() == VIA_THROUGH )
continue; // already done
int holediameter = via->GetDrillValue();
int thickness = GetPrm3DVisu().GetCopperThicknessBIU();
int hole_outer_radius = (holediameter + thickness) / 2;
TransformCircleToPolygon( currLayerHoles,
via->GetStart(), hole_outer_radius,
segcountLowQuality );
}
}
// draw pad shapes
for( MODULE* module = pcb->m_Modules; module; module = module->Next() )
{
// Note: NPTH pads are not drawn on copper layers when the pad
// has same shape as its hole
module->TransformPadsShapesWithClearanceToPolygon( layer,
bufferPolys,
0,
segcountforcircle,
correctionFactor, true );
// Micro-wave modules may have items on copper layers
module->TransformGraphicShapesWithClearanceToPolygonSet( layer,
bufferPolys,
0,
segcountforcircle,
correctionFactor );
// pad holes are already in list.
}
// Draw copper zones. Note:
// * if the holes are removed from copper zones
// the polygons are stored in bufferPolys (which contains all other polygons)
// * if the holes are NOT removed from copper zones
// the polygons are stored in bufferZonesPolys
if( isEnabled( FL_ZONE ) )
{
for( int ii = 0; ii < pcb->GetAreaCount(); ii++ )
{
ZONE_CONTAINER* zone = pcb->GetArea( ii );
LAYER_NUM zonelayer = zone->GetLayer();
if( zonelayer == layer )
{
zone->TransformSolidAreasShapesToPolygonSet(
remove_Holes ? bufferPolys : bufferZonesPolys,
segcountLowQuality, correctionFactorLQ );
}
}
}
// draw graphic items on copper layers (texts)
for( BOARD_ITEM* item = pcb->m_Drawings; item; item = item->Next() )
{
if( !item->IsOnLayer( layer ) )
continue;
switch( item->Type() )
{
case PCB_LINE_T: // should not exist on copper layers
( (DRAWSEGMENT*) item )->TransformShapeWithClearanceToPolygon(
bufferPolys, 0, segcountforcircle, correctionFactor );
break;
case PCB_TEXT_T:
( (TEXTE_PCB*) item )->TransformShapeWithClearanceToPolygonSet(
bufferPolys, 0, segcountLowQuality, correctionFactor );
break;
default:
break;
}
}
// bufferPolys contains polygons to merge. Many overlaps .
// Calculate merged polygons
if( bufferPolys.IsEmpty() )
continue;
// Use Clipper lib to subtract holes to copper areas
if( currLayerHoles.OutlineCount() )
{
currLayerHoles.Append(allLayerHoles);
currLayerHoles.Simplify();
bufferPolys.BooleanSubtract( currLayerHoles );
}
else
bufferPolys.BooleanSubtract( allLayerHoles );
int thickness = GetPrm3DVisu().GetLayerObjectThicknessBIU( layer );
int zpos = GetPrm3DVisu().GetLayerZcoordBIU( layer );
float zNormal = 1.0f; // When using thickness it will draw first the top and then botton (with z inverted)
// If we are not using thickness, then the z-normal has to match the layer direction
// because just one plane will be drawn
if( !thickness )
zNormal = Get3DLayer_Z_Orientation( layer );
if( realistic_mode )
{
setGLCopperColor();
}
else
{
EDA_COLOR_T color = g_ColorsSettings.GetLayerColor( layer );
SetGLColor( color );
}
// If holes are removed from copper zones, bufferPolys contains all polygons
// to draw (tracks+zones+texts).
Draw3D_SolidHorizontalPolyPolygons( bufferPolys, zpos, thickness,
GetPrm3DVisu().m_BiuTo3Dunits, useTextures,
zNormal );
// If holes are not removed from copper zones (for calculation time reasons,
// the zone polygons are stored in bufferZonesPolys and have to be drawn now:
if( !bufferZonesPolys.IsEmpty() )
{
Draw3D_SolidHorizontalPolyPolygons( bufferZonesPolys, zpos, thickness,
GetPrm3DVisu().m_BiuTo3Dunits, useTextures,
zNormal );
}
}
if( aActivity )
aActivity->Report( _( "Build board body" ) );
// Draw plated vertical holes inside the board, but not always. They are drawn:
// - if the board body is not shown, to show the holes.
// - or if the copper thickness is shown
if( !isEnabled( FL_SHOW_BOARD_BODY ) || isEnabled( FL_USE_COPPER_THICKNESS ) )
{
// Draw vias holes (vertical cylinders)
for( const TRACK* track = pcb->m_Track; track; track = track->Next() )
{
if( track->Type() == PCB_VIA_T )
{
const VIA *via = static_cast<const VIA*>(track);
draw3DViaHole( via );
}
}
// Draw pads holes (vertical cylinders)
for( const MODULE* module = pcb->m_Modules; module; module = module->Next() )
{
for( D_PAD* pad = module->Pads(); pad; pad = pad->Next() )
if( pad->GetAttribute () != PAD_HOLE_NOT_PLATED )
draw3DPadHole( pad );
}
}
glEndList();
// Build the body board:
glNewList( aBodyOnlyList, GL_COMPILE );
if( isRealisticMode() )
{
setGLEpoxyColor( 1.00 );
}
else
{
EDA_COLOR_T color = g_ColorsSettings.GetLayerColor( Edge_Cuts );
SetGLColor( color, 0.7 );
}
float copper_thickness = GetPrm3DVisu().GetCopperThicknessBIU();
// a small offset between substrate and external copper layer to avoid artifacts
// when drawing copper items on board
float epsilon = Millimeter2iu( 0.01 );
float zpos = GetPrm3DVisu().GetLayerZcoordBIU( B_Cu );
float board_thickness = GetPrm3DVisu().GetLayerZcoordBIU( F_Cu )
- GetPrm3DVisu().GetLayerZcoordBIU( B_Cu );
// items on copper layers and having a thickness = copper_thickness
// are drawn from zpos - copper_thickness/2 to zpos + copper_thickness
// therefore substrate position is copper_thickness/2 to
// substrate_height - copper_thickness/2
zpos += (copper_thickness + epsilon) / 2.0f;
board_thickness -= copper_thickness + epsilon;
bufferPcbOutlines.BooleanSubtract( allLayerHoles );
if( !bufferPcbOutlines.IsEmpty() )
{
Draw3D_SolidHorizontalPolyPolygons( bufferPcbOutlines, zpos + board_thickness / 2.0,
board_thickness, GetPrm3DVisu().m_BiuTo3Dunits, useTextures,
1.0f );
}
glEndList();
}
/**
* Function buildBoard3DAuxLayers
* Called by CreateDrawGL_List()
* Fills the OpenGL GL_ID_BOARD draw list with items
* on aux layers only
*/
void EDA_3D_CANVAS::buildBoard3DAuxLayers( REPORTER* aErrorMessages, REPORTER* aActivity )
{
const int segcountforcircle = 18;
double correctionFactor = 1.0 / cos( M_PI / (segcountforcircle * 2) );
BOARD* pcb = GetBoard();
SHAPE_POLY_SET bufferPolys;
static const LAYER_ID sequence[] = {
Dwgs_User,
Cmts_User,
Eco1_User,
Eco2_User,
Edge_Cuts,
Margin
};
for( LSEQ aux( sequence, sequence+DIM(sequence) ); aux; ++aux )
{
LAYER_ID layer = *aux;
if( !is3DLayerEnabled( layer ) )
continue;
if( aActivity )
aActivity->Report( wxString::Format( _( "Build layer %s" ), LSET::Name( layer ) ) );
bufferPolys.RemoveAllContours();
for( BOARD_ITEM* item = pcb->m_Drawings; item; item = item->Next() )
{
if( !item->IsOnLayer( layer ) )
continue;
switch( item->Type() )
{
case PCB_LINE_T:
( (DRAWSEGMENT*) item )->TransformShapeWithClearanceToPolygon(
bufferPolys, 0, segcountforcircle, correctionFactor );
break;
case PCB_TEXT_T:
( (TEXTE_PCB*) item )->TransformShapeWithClearanceToPolygonSet(
bufferPolys, 0, segcountforcircle, correctionFactor );
break;
default:
break;
}
}
for( MODULE* module = pcb->m_Modules; module; module = module->Next() )
{
module->TransformPadsShapesWithClearanceToPolygon( layer,
bufferPolys,
0,
segcountforcircle,
correctionFactor );
module->TransformGraphicShapesWithClearanceToPolygonSet( layer,
bufferPolys,
0,
segcountforcircle,
correctionFactor );
}
// bufferPolys contains polygons to merge. Many overlaps .
// Calculate merged polygons and remove pads and vias holes
if( bufferPolys.IsEmpty() )
continue;
bufferPolys.Simplify( polygonsCalcMode );
int thickness = GetPrm3DVisu().GetLayerObjectThicknessBIU( layer );
int zpos = GetPrm3DVisu().GetLayerZcoordBIU( layer );
// for Draw3D_SolidHorizontalPolyPolygons,
// zpos it the middle between bottom and top sides.
// However for top layers, zpos should be the bottom layer pos,
// and for bottom layers, zpos should be the top layer pos.
if( Get3DLayer_Z_Orientation( layer ) > 0 )
zpos += thickness/2;
else
zpos -= thickness/2 ;
float zNormal = 1.0f; // When using thickness it will draw first the top and then botton (with z inverted)
// If we are not using thickness, then the znormal must face the layer direction
// because it will draw just one plane
if( !thickness )
zNormal = Get3DLayer_Z_Orientation( layer );
setGLTechLayersColor( layer );
Draw3D_SolidHorizontalPolyPolygons( bufferPolys, zpos,
thickness, GetPrm3DVisu().m_BiuTo3Dunits, false,
zNormal );
}
}