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kicad/3d-viewer/3d_draw_helper_functions.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 1992-2014 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
*/
/**
* @file 3d_draw_helper_functions.cpp
*/
#include <fctsys.h>
#include <PolyLine.h>
#include <colors.h>
#include <colors_selection.h>
#include <class_pad.h>
#include <class_track.h>
#include <convert_basic_shapes_to_polygon.h>
#include <3d_viewer.h>
#include <3d_canvas.h>
#include <info3d_visu.h>
#include <3d_draw_basic_functions.h>
#define TEXTURE_PCB_SCALE 5.0
// -----------------
// helper function (from wxWidgets, opengl/cube.cpp sample
// -----------------
void CheckGLError(const char *aFileName, int aLineNumber)
{
GLenum errLast = GL_NO_ERROR;
for ( ; ; )
{
GLenum err = glGetError();
if ( err == GL_NO_ERROR )
return;
// normally the error is reset by the call to glGetError() but if
// glGetError() itself returns an error, we risk looping forever here
// so check that we get a different error than the last time
if ( err == errLast )
{
wxLogError(wxT("OpenGL error state couldn't be reset."));
return;
}
errLast = err;
wxLogError( wxT( "OpenGL error %d At: %s, line: %d" ), err,
GetChars( FROM_UTF8( aFileName ) ), aLineNumber );
}
}
INFO3D_VISU& EDA_3D_CANVAS::GetPrm3DVisu() const
{
return Parent()->GetPrm3DVisu();
}
wxSize EDA_3D_CANVAS::getBoardSize() const
{
// return the size of the board in pcb units
return GetPrm3DVisu().m_BoardSize;
}
wxPoint EDA_3D_CANVAS::getBoardCenter() const
{
// return the position of the board center in pcb units
return GetPrm3DVisu().m_BoardPos;
}
// return true if we are in realistic mode render
bool EDA_3D_CANVAS::isRealisticMode() const
{
return GetPrm3DVisu().IsRealisticMode();
}
// return true if aItem should be displayed
bool EDA_3D_CANVAS::isEnabled( DISPLAY3D_FLG aItem ) const
{
return GetPrm3DVisu().GetFlag( aItem );
}
// Helper function: initialize the copper color to draw the board
// in realistic mode.
void EDA_3D_CANVAS::setGLCopperColor()
{
glDisable( GL_TEXTURE_2D );
SetGLColor( GetPrm3DVisu().m_CopperColor, 1.0 );
}
// Helper function: initialize the color to draw the epoxy
// body board in realistic mode.
void EDA_3D_CANVAS::setGLEpoxyColor( float aTransparency )
{
// Generates an epoxy color, near board color
SetGLColor( GetPrm3DVisu().m_BoardBodyColor, aTransparency );
if( isEnabled( FL_RENDER_TEXTURES ) )
{
SetGLTexture( m_text_pcb, TEXTURE_PCB_SCALE );
}
}
// Helper function: initialize the color to draw the
// solder mask layers in realistic mode.
void EDA_3D_CANVAS::setGLSolderMaskColor( float aTransparency )
{
// Generates a solder mask color
SetGLColor( GetPrm3DVisu().m_SolderMaskColor, aTransparency );
if( isEnabled( FL_RENDER_TEXTURES ) )
{
SetGLTexture( m_text_pcb, TEXTURE_PCB_SCALE );
}
}
// Helper function: initialize the color to draw the non copper layers
// in realistic mode and normal mode.
void EDA_3D_CANVAS::setGLTechLayersColor( LAYER_NUM aLayer )
{
EDA_COLOR_T color;
if( isRealisticMode() )
{
switch( aLayer )
{
case B_Paste:
case F_Paste:
SetGLColor( DARKGRAY, 0.7 );
break;
case B_SilkS:
case F_SilkS:
SetGLColor( GetPrm3DVisu().m_SilkScreenColor, 0.96 );
if( isEnabled( FL_RENDER_TEXTURES ) )
{
SetGLTexture( m_text_silk, 10.0f );
}
break;
case B_Mask:
case F_Mask:
setGLSolderMaskColor( 0.90 );
break;
default:
color = g_ColorsSettings.GetLayerColor( aLayer );
SetGLColor( color, 0.7 );
break;
}
}
else
{
color = g_ColorsSettings.GetLayerColor( aLayer );
SetGLColor( color, 0.7 );
}
}
void EDA_3D_CANVAS::draw3DAxis()
{
if( ! m_glLists[GL_ID_AXIS] )
{
m_glLists[GL_ID_AXIS] = glGenLists( 1 );
glNewList( m_glLists[GL_ID_AXIS], GL_COMPILE );
glEnable( GL_COLOR_MATERIAL );
SetGLColor( WHITE );
glBegin( GL_LINES );
glNormal3f( 0.0f, 0.0f, 1.0f ); // Normal is Z axis
glVertex3f( 0.0f, 0.0f, 0.0f );
glVertex3f( 1.0f, 0.0f, 0.0f ); // X axis
glVertex3f( 0.0f, 0.0f, 0.0f );
glVertex3f( 0.0f, -1.0f, 0.0f ); // Y axis
glNormal3f( 1.0f, 0.0f, 0.0f ); // Normal is Y axis
glVertex3f( 0.0f, 0.0f, 0.0f );
glVertex3f( 0.0f, 0.0f, 0.3f ); // Z axis
glEnd();
glEndList();
}
}
// draw a 3D grid: an horizontal grid (XY plane and Z = 0,
// and a vertical grid (XZ plane and Y = 0)
void EDA_3D_CANVAS::draw3DGrid( double aGriSizeMM )
{
double zpos = 0.0;
EDA_COLOR_T gridcolor = DARKGRAY; // Color of grid lines
EDA_COLOR_T gridcolor_marker = LIGHTGRAY; // Color of grid lines every 5 lines
const double scale = GetPrm3DVisu().m_BiuTo3Dunits;
const double transparency = 0.3;
glNormal3f( 0.0, 0.0, 1.0 );
wxSize brd_size = getBoardSize();
wxPoint brd_center_pos = getBoardCenter();
NEGATE( brd_center_pos.y );
int xsize = std::max( brd_size.x, Millimeter2iu( 100 ) );
int ysize = std::max( brd_size.y, Millimeter2iu( 100 ) );
// Grid limits, in 3D units
double xmin = (brd_center_pos.x - xsize / 2) * scale;
double xmax = (brd_center_pos.x + xsize / 2) * scale;
double ymin = (brd_center_pos.y - ysize / 2) * scale;
double ymax = (brd_center_pos.y + ysize / 2) * scale;
double zmin = Millimeter2iu( -50 ) * scale;
double zmax = Millimeter2iu( 100 ) * scale;
// Draw horizontal grid centered on 3D origin (center of the board)
for( int ii = 0; ; ii++ )
{
if( (ii % 5) )
SetGLColor( gridcolor, transparency );
else
SetGLColor( gridcolor_marker, transparency );
int delta = KiROUND( ii * aGriSizeMM * IU_PER_MM );
if( delta <= xsize / 2 ) // Draw grid lines parallel to X axis
{
glBegin( GL_LINES );
glVertex3f( (brd_center_pos.x + delta) * scale, -ymin, zpos );
glVertex3f( (brd_center_pos.x + delta) * scale, -ymax, zpos );
glEnd();
if( ii != 0 )
{
glBegin( GL_LINES );
glVertex3f( (brd_center_pos.x - delta) * scale, -ymin, zpos );
glVertex3f( (brd_center_pos.x - delta) * scale, -ymax, zpos );
glEnd();
}
}
if( delta <= ysize / 2 ) // Draw grid lines parallel to Y axis
{
glBegin( GL_LINES );
glVertex3f( xmin, -(brd_center_pos.y + delta) * scale, zpos );
glVertex3f( xmax, -(brd_center_pos.y + delta) * scale, zpos );
glEnd();
if( ii != 0 )
{
glBegin( GL_LINES );
glVertex3f( xmin, -(brd_center_pos.y - delta) * scale, zpos );
glVertex3f( xmax, -(brd_center_pos.y - delta) * scale, zpos );
glEnd();
}
}
if( ( delta > ysize / 2 ) && ( delta > xsize / 2 ) )
break;
}
// Draw vertical grid n Z axis
glNormal3f( 0.0, -1.0, 0.0 );
// Draw vertical grid lines (parallel to Z axis)
for( int ii = 0; ; ii++ )
{
if( (ii % 5) )
SetGLColor( gridcolor, transparency );
else
SetGLColor( gridcolor_marker, transparency );
double delta = ii * aGriSizeMM * IU_PER_MM;
glBegin( GL_LINES );
glVertex3f( (brd_center_pos.x + delta) * scale, -brd_center_pos.y * scale, zmin );
glVertex3f( (brd_center_pos.x + delta) * scale, -brd_center_pos.y * scale, zmax );
glEnd();
if( ii != 0 )
{
glBegin( GL_LINES );
glVertex3f( (brd_center_pos.x - delta) * scale, -brd_center_pos.y * scale, zmin );
glVertex3f( (brd_center_pos.x - delta) * scale, -brd_center_pos.y * scale, zmax );
glEnd();
}
if( delta > xsize / 2.0f )
break;
}
// Draw horizontal grid lines on Z axis
for( int ii = 0; ; ii++ )
{
if( (ii % 5) )
SetGLColor( gridcolor, transparency);
else
SetGLColor( gridcolor_marker, transparency );
double delta = ii * aGriSizeMM * IU_PER_MM * scale;
if( delta <= zmax )
{
// Draw grid lines on Z axis (positive Z axis coordinates)
glBegin( GL_LINES );
glVertex3f( xmin, -brd_center_pos.y * scale, delta );
glVertex3f( xmax, -brd_center_pos.y * scale, delta );
glEnd();
}
if( delta <= -zmin && ( ii != 0 ) )
{
// Draw grid lines on Z axis (negative Z axis coordinates)
glBegin( GL_LINES );
glVertex3f( xmin, -brd_center_pos.y * scale, -delta );
glVertex3f( xmax, -brd_center_pos.y * scale, -delta );
glEnd();
}
if( ( delta > zmax ) && ( delta > -zmin ) )
break;
}
}
// Draw 3D pads.
void EDA_3D_CANVAS::draw3DPadHole( const D_PAD* aPad )
{
// Draw the pad hole
wxSize drillsize = aPad->GetDrillSize();
bool hasHole = drillsize.x && drillsize.y;
if( !hasHole )
return;
// Store here the points to approximate hole by segments
CPOLYGONS_LIST holecornersBuffer;
int thickness = GetPrm3DVisu().GetCopperThicknessBIU();
int height = GetPrm3DVisu().GetLayerZcoordBIU( F_Cu ) -
GetPrm3DVisu().GetLayerZcoordBIU( B_Cu );
if( isRealisticMode() )
setGLCopperColor();
else
SetGLColor( DARKGRAY );
int holeZpoz = GetPrm3DVisu().GetLayerZcoordBIU( B_Cu ) - thickness / 2;
int holeHeight = height + thickness;
if( drillsize.x == drillsize.y ) // usual round hole
{
int hole_radius = ( drillsize.x + thickness ) / 2;
Draw3D_ZaxisCylinder( aPad->GetPosition(),
hole_radius, holeHeight,
thickness, holeZpoz, GetPrm3DVisu().m_BiuTo3Dunits );
}
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;
int hole_radius = ( width + thickness ) / 2;
// Draw the hole
Draw3D_ZaxisOblongCylinder( start, end, hole_radius, holeHeight,
thickness, holeZpoz, GetPrm3DVisu().m_BiuTo3Dunits );
}
}
void EDA_3D_CANVAS::draw3DViaHole( const VIA* aVia )
{
LAYER_ID top_layer, bottom_layer;
int thickness = GetPrm3DVisu().GetCopperThicknessBIU();
int inner_radius = (int)((float)aVia->GetDrillValue() * 1.01f) / 2.0f; // This add a bit more in order to correct a draw artifact while using tickness
aVia->LayerPair( &top_layer, &bottom_layer );
// Drawing via hole:
if( isRealisticMode() )
setGLCopperColor();
else
{
EDA_COLOR_T color = g_ColorsSettings.GetItemColor( VIAS_VISIBLE + aVia->GetViaType() );
SetGLColor( color );
}
int height = GetPrm3DVisu().GetLayerZcoordBIU( top_layer ) -
GetPrm3DVisu().GetLayerZcoordBIU( bottom_layer ) + thickness;
int zpos = GetPrm3DVisu().GetLayerZcoordBIU( bottom_layer ) - thickness / 2;
Draw3D_ZaxisCylinder( aVia->GetStart(), inner_radius, height,
thickness, zpos, GetPrm3DVisu().m_BiuTo3Dunits );
}
/* Build a pad outline as non filled polygon, to draw pads on silkscreen layer
* Used only to draw pads outlines on silkscreen layers.
*/
void EDA_3D_CANVAS::buildPadShapeThickOutlineAsPolygon( const D_PAD* aPad,
CPOLYGONS_LIST& aCornerBuffer,
int aWidth,
int aCircleToSegmentsCount,
double aCorrectionFactor )
{
if( aPad->GetShape() == PAD_CIRCLE ) // Draw a ring
{
TransformRingToPolygon( aCornerBuffer, aPad->ShapePos(),
aPad->GetSize().x / 2, aCircleToSegmentsCount, aWidth );
return;
}
// For other shapes, draw polygon outlines
CPOLYGONS_LIST corners;
aPad->BuildPadShapePolygon( corners, wxSize( 0, 0 ),
aCircleToSegmentsCount, aCorrectionFactor );
// Add outlines as thick segments in polygon buffer
for( unsigned ii = 0, jj = corners.GetCornersCount() - 1;
ii < corners.GetCornersCount(); jj = ii, ii++ )
{
TransformRoundedEndsSegmentToPolygon( aCornerBuffer,
corners.GetPos( jj ),
corners.GetPos( ii ),
aCircleToSegmentsCount, aWidth );
}
}
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