@ -3,7 +3,7 @@
*
* Copyright ( C ) 2022 Mark Roszko < mark . roszko @ gmail . com >
* Copyright ( C ) 2016 Cirilo Bernardo < cirilo . bernardo @ gmail . com >
* Copyright ( C ) 2016 - 2022 KiCad Developers , see AUTHORS . txt for contributors .
* Copyright ( C ) 2016 - 2023 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
@ -93,21 +93,11 @@
static constexpr double USER_PREC = 1e-4 ;
static constexpr double USER_ANGLE_PREC = 1e-6 ;
// minimum PCB thickness in mm (2 microns assumes a very thin polyimide film)
static constexpr double THICKNESS_MIN = 0.002 ;
// default PCB thickness in mm
static constexpr double THICKNESS_DEFAULT = 1.6 ;
// nominal offset from the board
static constexpr double BOARD_OFFSET = 0.05 ;
// min. length**2 below which 2 points are considered coincident
static constexpr double MIN_LENGTH2 = STEPEXPORT_MIN_DISTANCE * STEPEXPORT_MIN_DISTANCE ;
// supported file types
enum FormatType
// supported file types for 3D models
enum MODEL3D_FORMAT_TYPE
{
FMT_NONE ,
FMT_STEP ,
@ -120,7 +110,7 @@ enum FormatType
} ;
FormatType fileType ( const char * aFileName )
MODEL3D_FORMAT_TYPE fileType ( const char * aFileName )
{
wxFileName lfile ( wxString : : FromUTF8Unchecked ( aFileName ) ) ;
@ -194,12 +184,13 @@ STEP_PCB_MODEL::STEP_PCB_MODEL( const wxString& aPcbName )
m_components = 0 ;
m_precision = USER_PREC ;
m_angleprec = USER_ANGLE_PREC ;
m_thickness = THICKNESS_DEFAULT ;
m_minDistance2 = MIN_LENGTH2 ;
m_boardThickness = BOARD_THICKNESS_DEFAULT_MM ;
m_copperThickness = COPPER_THICKNESS_DEFAULT_MM ;
m_mergeOCCMaxDist = OCC_MAX_DISTANCE_TO_MERGE_POINTS ;
m_minx = 1.0e10 ; // absurdly large number; any valid PCB X value will be smaller
m_pcbName = aPcbName ;
BRepBuilderAPI : : Precision ( STEPEXPORT_MIN_DISTANCE ) ;
m_maxError = 5000 ; // 5 microns
BRepBuilderAPI : : Precision ( m_mergeOCCMaxDist ) ;
m_maxError = pcbIUScale . mmToIU ( ARC_TO_SEGMENT_MAX_ERROR_MM ) ;
}
@ -208,22 +199,79 @@ STEP_PCB_MODEL::~STEP_PCB_MODEL()
m_doc - > Close ( ) ;
}
bool STEP_PCB_MODEL : : AddPadShape ( const PAD * aPad , const VECTOR2D & aOrigin )
{
TopoDS_Shape curr_shape_top ;
TopoDS_Shape curr_shape_bottom ;
const std : : shared_ptr < SHAPE_POLY_SET > & pad_shape = aPad - > GetEffectivePolygon ( ) ;
bool success = true ;
if ( aPad - > IsOnLayer ( F_Cu ) )
{
// Make a shape on top copper layer
success = MakeShape ( curr_shape_top , pad_shape . get ( ) - > COutline ( 0 ) , m_copperThickness , m_boardThickness , aOrigin ) ;
if ( success )
m_board_outlines . push_back ( curr_shape_top ) ;
}
if ( success & & aPad - > IsOnLayer ( B_Cu ) )
{
success = MakeShape ( curr_shape_bottom , pad_shape . get ( ) - > COutline ( 0 ) , m_copperThickness , - m_copperThickness , aOrigin ) ;
if ( success )
m_board_outlines . push_back ( curr_shape_bottom ) ;
}
if ( ! success ) // Error
ReportMessage ( wxT ( " OCC error adding pad/via polygon. \n " ) ) ;
return success ;
}
bool STEP_PCB_MODEL : : AddCopperPolygonShapes ( const SHAPE_POLY_SET * aPolyShapes , bool aOnTop , const VECTOR2D & aOrigin )
{
bool success = true ;
for ( int ii = 0 ; ii < aPolyShapes - > OutlineCount ( ) ; ii + + )
{
TopoDS_Shape copper_shape ;
double z_pos = aOnTop ? m_boardThickness : - m_copperThickness ;
if ( MakeShape ( copper_shape , aPolyShapes - > COutline ( ii ) , m_copperThickness , z_pos , aOrigin ) )
{
m_board_outlines . push_back ( copper_shape ) ;
}
else
{
ReportMessage ( wxString : : Format ( wxT ( " Could not add shape (%d points) to copper layer on %s. \n " ) ,
aPolyShapes - > COutline ( ii ) . PointCount ( ) ,
aOnTop ? wxT ( " top " ) : wxT ( " bottom " ) ) ) ;
success = false ;
}
}
return success ;
}
bool STEP_PCB_MODEL : : AddPadHole ( const PAD * aPad , const VECTOR2D & aOrigin )
{
if ( NULL = = aPad | | ! aPad - > GetDrillSize ( ) . x )
if ( aPad = = nullptr | | ! aPad - > GetDrillSize ( ) . x )
return false ;
VECTOR2I pos = aPad - > GetPosition ( ) ;
double holeZsize = m_boardThickness + ( m_copperThickness * 2 ) ;
if ( aPad - > GetDrillShape ( ) = = PAD_DRILL_SHAPE_CIRCLE )
{
TopoDS_Shape s =
BRepPrimAPI_MakeCylinder ( pcbIUScale . IUTomm ( aPad - > GetDrillSize ( ) . x ) * 0.5 , m_thickness * 2.0 ) . Shape ( ) ;
BRepPrimAPI_MakeCylinder ( pcbIUScale . IUTomm ( aPad - > GetDrillSize ( ) . x ) * 0.5 , holeZsize * 2.0 ) . Shape ( ) ;
gp_Trsf shift ;
shift . SetTranslation ( gp_Vec ( pcbIUScale . IUTomm ( pos . x - aOrigin . x ) ,
- pcbIUScale . IUTomm ( pos . y - aOrigin . y ) ,
- m_thickness * 0.5 ) ) ;
- pcbIUScale . IUTomm ( pos . y - aOrigin . y ) ,
- holeZsize * 0.5 ) ) ;
BRepBuilderAPI_Transform hole ( s , shift ) ;
m_cutouts . push_back ( hole . Shape ( ) ) ;
return true ;
@ -231,6 +279,7 @@ bool STEP_PCB_MODEL::AddPadHole( const PAD* aPad, const VECTOR2D& aOrigin )
// slotted hole
SHAPE_POLY_SET holeOutlines ;
if ( ! aPad - > TransformHoleToPolygon ( holeOutlines , 0 , m_maxError , ERROR_INSIDE ) )
{
return false ;
@ -240,7 +289,7 @@ bool STEP_PCB_MODEL::AddPadHole( const PAD* aPad, const VECTOR2D& aOrigin )
if ( holeOutlines . OutlineCount ( ) > 0 )
{
if ( MakeShape ( hole , holeOutlines . COutline ( 0 ) , m_thickness , aOrigin ) )
if ( MakeShape ( hole , holeOutlines . COutline ( 0 ) , holeZsize * 2 , - holeZsize * 0.5 , aOrigin ) )
{
m_cutouts . push_back ( hole ) ;
}
@ -312,11 +361,11 @@ bool STEP_PCB_MODEL::AddComponent( const std::string& aFileNameUTF8, const std::
void STEP_PCB_MODEL : : SetPCBThickness ( double aThickness )
{
if ( aThickness < 0.0 )
m_t hickness = THICKNESS_DEFAULT ;
else if ( aThickness < THICKNESS_MIN )
m_t hickness = THICKNESS_MIN ;
m_boardT hickness = BOARD_ THICKNESS_DEFAULT_MM ;
else if ( aThickness < BOARD_ THICKNESS_MIN_MM )
m_boardT hickness = BOARD_ THICKNESS_MIN_MM ;
else
m_t hickness = aThickness ;
m_boardT hickness = aThickness ;
}
@ -328,14 +377,11 @@ void STEP_PCB_MODEL::SetBoardColor( double r, double g, double b )
}
void STEP_PCB_MODEL : : SetMin Distance( double aDistance )
void STEP_PCB_MODEL : : OCCSetMergeMax Distance( double aDistance )
{
// Ensure a minimal value (in mm)
aDistance = std : : max ( aDistance , STEPEXPORT_MIN_ACCEPTABLE_DISTANCE ) ;
// m_minDistance2 keeps a squared distance value
m_minDistance2 = aDistance * aDistance ;
BRepBuilderAPI : : Precision ( aDistance ) ;
m_mergeOCCMaxDist = aDistance ;
BRepBuilderAPI : : Precision ( m_mergeOCCMaxDist ) ;
}
bool STEP_PCB_MODEL : : isBoardOutlineValid ( )
@ -345,7 +391,7 @@ bool STEP_PCB_MODEL::isBoardOutlineValid()
bool STEP_PCB_MODEL : : MakeShape ( TopoDS_Shape & aShape , const SHAPE_LINE_CHAIN & aChain ,
double aThickness , const VECTOR2D & aOrigin )
double aThickness , double aZposition , const VECTOR2D & aOrigin )
{
if ( ! aShape . IsNull ( ) )
return false ; // there is already data in the shape object
@ -354,11 +400,12 @@ bool STEP_PCB_MODEL::MakeShape( TopoDS_Shape& aShape, const SHAPE_LINE_CHAIN& aC
return false ; // the loop is not closed
BRepBuilderAPI_MakeWire wire ;
TopoDS_Edge edge ;
bool success = true ;
bool success = true ;
gp_Pnt start = gp_Pnt ( pcbIUScale . IUTomm ( aChain . CPoint ( 0 ) . x - aOrigin . x ) ,
- pcbIUScale . IUTomm ( aChain . CPoint ( 0 ) . y - aOrigin . y ) , 0.0 ) ;
- pcbIUScale . IUTomm ( aChain . CPoint ( 0 ) . y - aOrigin . y ) , aZposition ) ;
int items_count = 0 ;
for ( int j = 0 ; j < aChain . PointCount ( ) ; j + + )
{
@ -367,38 +414,35 @@ bool STEP_PCB_MODEL::MakeShape( TopoDS_Shape& aShape, const SHAPE_LINE_CHAIN& aC
gp_Pnt end ;
if ( next > = aChain . PointCount ( ) )
{
end = gp_Pnt ( pcbIUScale . IUTomm ( aChain . CPoint ( 0 ) . x - aOrigin . x ) ,
- pcbIUScale . IUTomm ( aChain . CPoint ( 0 ) . y - aOrigin . y ) , 0.0 ) ;
}
else
{
end = gp_Pnt ( pcbIUScale . IUTomm ( aChain . CPoint ( next ) . x - aOrigin . x ) ,
- pcbIUScale . IUTomm ( aChain . CPoint ( next ) . y - aOrigin . y ) , 0.0 ) ;
}
next = 0 ;
// Do not export very small segments: they can create broken outlines
double seg_len = std : : abs ( end . X ( ) - start . X ( ) ) + std : : abs ( start . Y ( ) - end . Y ( ) ) ;
double min_len = 0.0001 ; // In mm, i.e. 0.1 micron
end = gp_Pnt ( pcbIUScale . IUTomm ( aChain . CPoint ( next ) . x - aOrigin . x ) ,
- pcbIUScale . IUTomm ( aChain . CPoint ( next ) . y - aOrigin . y ) , aZposition ) ;
if ( seg_len < min_len )
continue ;
// Do not export too short segments: they create broken shape because OCC thinks
// start point and end point are at the same place
double seg_len = std : : hypot ( end . X ( ) - start . X ( ) , end . Y ( ) - start . Y ( ) ) ;
if ( seg_len < = m_mergeOCCMaxDist )
continue ;
try
{
TopoDS_Edge edge ;
edge = BRepBuilderAPI_MakeEdge ( start , end ) ;
wire . Add ( edge ) ;
if ( BRepBuilderAPI_WireDone ! = wire . Error ( ) )
if ( wire . Error ( ) ! = BRepBuilderAPI_WireDone )
{
ReportMessage ( wxT ( " failed to add curve \n " ) ) ;
return false ;
}
items_count + + ;
}
catch ( const Standard_Failure & e )
{
ReportMessage (
wxString : : Format ( wxT ( " OCC exception: %s \n " ) , e . GetMessageString ( ) ) ) ;
ReportMessage ( wxString : : Format ( wxT ( " MakeShape1: OCC exception: %s \n " ) ,
e . GetMessageString ( ) ) ) ;
success = false ;
}
@ -420,7 +464,8 @@ bool STEP_PCB_MODEL::MakeShape( TopoDS_Shape& aShape, const SHAPE_LINE_CHAIN& aC
catch ( const Standard_Failure & e )
{
ReportMessage (
wxString : : Format ( wxT ( " OCC exception: %s \n " ) , e . GetMessageString ( ) ) ) ;
wxString : : Format ( wxT ( " MakeShape2 (items_count %d): OCC exception: %s \n " ) ,
items_count , e . GetMessageString ( ) ) ) ;
return false ;
}
@ -448,9 +493,10 @@ bool STEP_PCB_MODEL::CreatePCB( SHAPE_POLY_SET& aOutline, VECTOR2D aOrigin )
m_hasPCB = true ; // whether or not operations fail we note that CreatePCB has been invoked
// Support for more than one main outline (more than one board)
std : : vector < TopoDS_Shape > board_outlines ;
// Number of items having the copper color
int copper_item_count = m_board_outlines . size ( ) ;
// Support for more than one main outline (more than one board)
for ( int cnt = 0 ; cnt < aOutline . OutlineCount ( ) ; cnt + + )
{
const SHAPE_LINE_CHAIN & outline = aOutline . COutline ( cnt ) ;
@ -460,7 +506,7 @@ bool STEP_PCB_MODEL::CreatePCB( SHAPE_POLY_SET& aOutline, VECTOR2D aOrigin )
TopoDS_Shape curr_brd ;
if ( ! MakeShape ( curr_brd , outline , m_thickness , aOrigin ) )
if ( ! MakeShape ( curr_brd , outline , m_boardThickness , 0.0 , aOrigin ) )
{
// Error
ReportMessage ( wxString : : Format (
@ -468,7 +514,7 @@ bool STEP_PCB_MODEL::CreatePCB( SHAPE_POLY_SET& aOutline, VECTOR2D aOrigin )
cnt + 1 , outline . PointCount ( ) ) ) ;
}
else
board_outlines . push_back ( curr_brd ) ;
m_ board_outlines. push_back ( curr_brd ) ;
// Generate board cutouts in current main outline:
if ( aOutline . HoleCount ( cnt ) > 0 )
@ -482,7 +528,8 @@ bool STEP_PCB_MODEL::CreatePCB( SHAPE_POLY_SET& aOutline, VECTOR2D aOrigin )
const SHAPE_LINE_CHAIN & holeOutline = aOutline . Hole ( cnt , ii ) ;
TopoDS_Shape hole ;
if ( MakeShape ( hole , holeOutline , m_thickness , aOrigin ) )
if ( MakeShape ( hole , holeOutline , m_boardThickness + ( m_copperThickness * 4 ) ,
- m_copperThickness * 2 , aOrigin ) )
{
m_cutouts . push_back ( hole ) ;
}
@ -501,8 +548,15 @@ bool STEP_PCB_MODEL::CreatePCB( SHAPE_POLY_SET& aOutline, VECTOR2D aOrigin )
holelist . Append ( hole ) ;
// Remove holes for each board (usually there is only one board
for ( TopoDS_Shape & board : board_outlines )
int cnt = 0 ;
for ( TopoDS_Shape & board : m_board_outlines )
{
cnt + + ;
if ( cnt % 10 = = 0 )
ReportMessage ( wxString : : Format ( wxT ( " added %d/%d shapes \n " ) ,
cnt , ( int ) m_board_outlines . size ( ) ) ) ;
BRepAlgoAPI_Cut Cut ;
TopTools_ListOfShape mainbrd ;
@ -521,7 +575,7 @@ bool STEP_PCB_MODEL::CreatePCB( SHAPE_POLY_SET& aOutline, VECTOR2D aOrigin )
ReportMessage ( wxT ( " \n Generate board full shape. \n " ) ) ;
// Dont expand the component or else coloring it gets hard
for ( TopoDS_Shape & board : board_outlines )
for ( TopoDS_Shape & board : m_ board_outlines)
{
m_pcb_labels . push_back ( m_assy - > AddComponent ( m_assy_label , board , false ) ) ;
@ -538,13 +592,15 @@ bool STEP_PCB_MODEL::CreatePCB( SHAPE_POLY_SET& aOutline, VECTOR2D aOrigin )
// color the PCB
Handle ( XCAFDoc_ColorTool ) colorTool = XCAFDoc_DocumentTool : : ColorTool ( m_doc - > Main ( ) ) ;
Quantity_Color color ( m_boardColor [ 0 ] , m_boardColor [ 1 ] , m_boardColor [ 2 ] , Quantity_TOC_RGB ) ;
Quantity_Color board_color ( m_boardColor [ 0 ] , m_boardColor [ 1 ] , m_boardColor [ 2 ] , Quantity_TOC_RGB ) ;
Quantity_Color copper_color ( 0.7 , 0.61 , 0.0 , Quantity_TOC_RGB ) ;
int pcbIdx = 1 ;
int copper_objects_cnt = 0 ;
for ( TDF_Label & pcb_label : m_pcb_labels )
{
colorTool - > SetColor ( pcb_label , color , XCAFDoc_ColorSurf ) ;
colorTool - > SetColor ( pcb_label , board_ color, XCAFDoc_ColorSurf ) ;
Handle ( TDataStd_TreeNode ) node ;
@ -568,15 +624,21 @@ bool STEP_PCB_MODEL::CreatePCB( SHAPE_POLY_SET& aOutline, VECTOR2D aOrigin )
}
}
TopExp_Explorer topex ;
// color the PCB
TopExp_Explorer topex ;
topex . Init ( m_assy - > GetShape ( pcb_label ) , TopAbs_SOLID ) ;
while ( topex . More ( ) )
{
colorTool - > SetColor ( topex . Current ( ) , color , XCAFDoc_ColorSurf ) ;
if ( copper_objects_cnt < copper_item_count )
colorTool - > SetColor ( topex . Current ( ) , copper_color , XCAFDoc_ColorSurf ) ;
else
colorTool - > SetColor ( topex . Current ( ) , board_color , XCAFDoc_ColorSurf ) ;
topex . Next ( ) ;
}
copper_objects_cnt + + ;
}
# if( defined OCC_VERSION_HEX ) && ( OCC_VERSION_HEX > 0x070101 )
@ -711,7 +773,7 @@ bool STEP_PCB_MODEL::getModelLabel( const std::string& aFileNameUTF8, VECTOR3D a
m_app - > NewDocument ( " MDTV-XCAF " , doc ) ;
wxString fileName ( wxString : : FromUTF8 ( aFileNameUTF8 . c_str ( ) ) ) ;
FormatType modelFmt = fileType ( aFileNameUTF8 . c_str ( ) ) ;
MODEL3D_FORMAT_TYPE modelFmt = fileType ( aFileNameUTF8 . c_str ( ) ) ;
switch ( modelFmt )
{
@ -944,7 +1006,7 @@ bool STEP_PCB_MODEL::getModelLocation( bool aBottom, VECTOR2D aPosition, double
}
else
{
aOffset . z + = m_t hickness ;
aOffset . z + = m_boardT hickness ;
lRot . SetRotation ( gp_Ax1 ( gp_Pnt ( 0.0 , 0.0 , 0.0 ) , gp_Dir ( 0.0 , 0.0 , 1.0 ) ) , aRotation ) ;
lPos . Multiply ( lRot ) ;
}
jean-pierre charras
3 years ago