void ocpnDC::DrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, float scale )
{
if( dc )
dc->DrawPolygon( n, points, xoffset, yoffset );
#ifdef ocpnUSE_GL
else {
#ifdef __WXQT__
SetGLAttrs( false ); // Some QT platforms (Android) have trouble with GL_BLEND / GL_LINE_SMOOTH
#else
SetGLAttrs( true );
#endif
if( ConfigureBrush() ) {
glBegin( GL_POLYGON );
for( int i = 0; i < n; i++ )
glVertex2f( (points[i].x * scale) + xoffset, (points[i].y * scale) + yoffset );
glEnd();
}
if( ConfigurePen() ) {
glBegin( GL_LINE_LOOP );
for( int i = 0; i < n; i++ )
glVertex2f( (points[i].x * scale) + xoffset, (points[i].y * scale) + yoffset );
glEnd();
}
SetGLAttrs( false );
}
#endif
}
void ODDC::DrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, float scale )
{
if( dc )
dc->DrawPolygon( n, points, xoffset, yoffset );
#ifdef ocpnUSE_GL
else {
SetGLAttrs( true );
if( ConfigureBrush() ) {
glBegin( GL_POLYGON );
for( int i = 0; i < n; i++ )
glVertex2f( (points[i].x * scale) + xoffset, (points[i].y * scale) + yoffset );
glEnd();
}
if( ConfigurePen() ) {
glBegin( GL_LINE_LOOP );
for( int i = 0; i < n; i++ )
glVertex2f( (points[i].x * scale) + xoffset, (points[i].y * scale) + yoffset );
glEnd();
}
SetGLAttrs( false );
}
#endif
}
void ODDC::DrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, bool b_hiqual )
{
if( dc )
dc->DrawLines( n, points, xoffset, yoffset );
#ifdef ocpnUSE_GL
else if( ConfigurePen() ) {
SetGLAttrs( b_hiqual );
bool b_draw_thick = false;
glDisable( GL_LINE_STIPPLE );
SetGLStipple();
// Enable anti-aliased lines, at best quality
if( b_hiqual ) {
glEnable( GL_BLEND );
if( m_pen.GetWidth() > 1 ) {
GLint parms[2];
glGetIntegerv( GL_SMOOTH_LINE_WIDTH_RANGE, &parms[0] );
if( m_pen.GetWidth() > parms[1] ) b_draw_thick = true;
else
glLineWidth( wxMax(g_GLMinSymbolLineWidth, m_pen.GetWidth()) );
} else
glLineWidth( wxMax(g_GLMinSymbolLineWidth, 1) );
} else {
if( m_pen.GetWidth() > 1 ) {
GLint parms[2];
glGetIntegerv( GL_ALIASED_LINE_WIDTH_RANGE, &parms[0] );
if( m_pen.GetWidth() > parms[1] ) b_draw_thick = true;
else
glLineWidth( wxMax(g_GLMinSymbolLineWidth, m_pen.GetWidth()) );
} else
glLineWidth( wxMax(g_GLMinSymbolLineWidth, 1) );
}
if( b_draw_thick) {
DrawGLThickLines( n, points, xoffset, yoffset, m_pen, b_hiqual );
} else {
if( b_hiqual ) {
glEnable( GL_LINE_SMOOTH );
}
glBegin( GL_LINE_STRIP );
for( int i = 0; i < n; i++ )
glVertex2i( points[i].x + xoffset, points[i].y + yoffset );
glEnd();
}
glDisable( GL_LINE_STIPPLE );
SetGLAttrs( false );
}
#endif
}
void ocpnDC::DrawPolygon( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
{
if( dc )
dc->DrawPolygon( n, points, xoffset, yoffset );
#ifdef ocpnUSE_GL
else {
glPushAttrib( GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_LINE_BIT | GL_HINT_BIT | GL_POLYGON_BIT ); //Save state
SetGLAttrs( true );
if( ConfigureBrush() ) {
glBegin( GL_POLYGON );
for( int i = 0; i < n; i++ )
glVertex2i( points[i].x + xoffset, points[i].y + yoffset );
glEnd();
}
if( ConfigurePen() ) {
glBegin( GL_LINE_LOOP );
for( int i = 0; i < n; i++ )
glVertex2i( points[i].x + xoffset, points[i].y + yoffset );
glEnd();
}
glPopAttrib();
}
#endif
}
void ocpnDC::DrawPolygonTessellated( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset )
{
if( dc )
dc->DrawPolygon( n, points, xoffset, yoffset );
#ifdef ocpnUSE_GL
else {
# ifndef ocpnUSE_GLES // tessalator in glues is broken
if( n < 5 )
# endif
{
DrawPolygon( n, points, xoffset, yoffset );
return;
}
glPushAttrib( GL_ENABLE_BIT | GL_COLOR_BUFFER_BIT | GL_LINE_BIT | GL_HINT_BIT | GL_POLYGON_BIT ); //Save state
SetGLAttrs( false );
static GLUtesselator *tobj = NULL;
if( ! tobj ) tobj = gluNewTess();
gluTessCallback( tobj, GLU_TESS_VERTEX, (_GLUfuncptr) &ocpnDCvertexCallback );
gluTessCallback( tobj, GLU_TESS_BEGIN, (_GLUfuncptr) &ocpnDCbeginCallback );
gluTessCallback( tobj, GLU_TESS_END, (_GLUfuncptr) &ocpnDCendCallback );
gluTessCallback( tobj, GLU_TESS_COMBINE, (_GLUfuncptr) &ocpnDCcombineCallback );
gluTessCallback( tobj, GLU_TESS_ERROR, (_GLUfuncptr) &ocpnDCerrorCallback );
gluTessNormal( tobj, 0, 0, 1);
gluTessProperty( tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_NONZERO );
if( ConfigureBrush() ) {
gluTessBeginPolygon( tobj, NULL );
gluTessBeginContour( tobj );
for( int i = 0; i < n; i++ ) {
GLvertex* vertex = new GLvertex();
gTesselatorVertices.Add( vertex );
vertex->info.x = (GLdouble) points[i].x;
vertex->info.y = (GLdouble) points[i].y;
vertex->info.z = (GLdouble) 0.0;
vertex->info.r = (GLdouble) 0.0;
vertex->info.g = (GLdouble) 0.0;
vertex->info.b = (GLdouble) 0.0;
gluTessVertex( tobj, (GLdouble*)vertex, (GLdouble*)vertex );
}
gluTessEndContour( tobj );
gluTessEndPolygon( tobj );
}
glPopAttrib();
for( unsigned int i=0; i<gTesselatorVertices.Count(); i++ )
delete (GLvertex*)gTesselatorVertices.Item(i);
gTesselatorVertices.Clear();
}
#endif
}
void ocpnDC::DrawLines( int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset, bool b_hiqual )
{
if( dc ) dc->DrawLines( n, points, xoffset, yoffset );
else if( ConfigurePen() ) {
glPushAttrib( GL_COLOR_BUFFER_BIT | GL_LINE_BIT | GL_HINT_BIT ); //Save state
SetGLAttrs( b_hiqual );
bool b_draw_thick = false;
SetGLStipple();
// Enable anti-aliased lines, at best quality
if( b_hiqual ) {
if( m_pen.GetWidth() > 1 ) {
GLint parms[2];
glGetIntegerv( GL_SMOOTH_LINE_WIDTH_RANGE, &parms[0] );
if( m_pen.GetWidth() > parms[1] ) b_draw_thick = true;
else
glLineWidth( wxMax(g_GLMinLineWidth, m_pen.GetWidth()) );
} else
glLineWidth( wxMax(g_GLMinLineWidth, 1) );
} else {
if( m_pen.GetWidth() > 1 ) {
GLint parms[2];
glGetIntegerv( GL_ALIASED_LINE_WIDTH_RANGE, &parms[0] );
if( m_pen.GetWidth() > parms[1] ) b_draw_thick = true;
else
glLineWidth( wxMax(g_GLMinLineWidth, m_pen.GetWidth()) );
} else
glLineWidth( wxMax(g_GLMinLineWidth, 1) );
}
if( b_draw_thick/*m_pen.GetWidth() > 1*/) {
wxPoint p0 = points[0];
for( int i = 1; i < n; i++ ) {
DrawThickLine( p0.x + xoffset, p0.y + yoffset, points[i].x + xoffset,
points[i].y + yoffset, m_pen, b_hiqual );
p0 = points[i];
}
} else {
glBegin( GL_LINE_STRIP );
for( int i = 0; i < n; i++ )
glVertex2i( points[i].x + xoffset, points[i].y + yoffset );
glEnd();
}
glPopAttrib(); // restore state
}
}