FTVectoriser::~FTVectoriser()
{
for(size_t c = 0; c < ContourCount(); ++c)
{
delete contourList[c];
}
delete [] contourList;
delete mesh;
}
size_t FTVectoriser::PointCount()
{
size_t s = 0;
for(size_t c = 0; c < ContourCount(); ++c)
{
s += contourList[c]->PointCount();
}
return s;
}
void FTVectoriser::MakeMesh( FTGL_DOUBLE zNormal)
{
if( mesh)
{
delete mesh;
}
mesh = new FTMesh;
GLUtesselator* tobj = gluNewTess();
gluTessCallback( tobj, GLU_TESS_BEGIN_DATA, (GLUTesselatorFunction)ftglBegin);
gluTessCallback( tobj, GLU_TESS_VERTEX_DATA, (GLUTesselatorFunction)ftglVertex);
gluTessCallback( tobj, GLU_TESS_COMBINE_DATA, (GLUTesselatorFunction)ftglCombine);
gluTessCallback( tobj, GLU_TESS_END_DATA, (GLUTesselatorFunction)ftglEnd);
gluTessCallback( tobj, GLU_TESS_ERROR_DATA, (GLUTesselatorFunction)ftglError);
if( contourFlag & ft_outline_even_odd_fill) // ft_outline_reverse_fill
{
gluTessProperty( tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
}
else
{
gluTessProperty( tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_NONZERO);
}
gluTessProperty( tobj, GLU_TESS_TOLERANCE, 0);
gluTessNormal( tobj, 0.0f, 0.0f, zNormal);
gluTessBeginPolygon( tobj, mesh);
for( size_t c = 0; c < ContourCount(); ++c)
{
const FTContour* contour = contourList[c];
gluTessBeginContour( tobj);
for( size_t p = 0; p < contour->PointCount(); ++p)
{
const FTGL_DOUBLE* d = contour->Point(p);
gluTessVertex( tobj, (GLdouble*)d, (GLdouble*)d);
}
gluTessEndContour( tobj);
}
gluTessEndPolygon( tobj);
gluDeleteTess( tobj);
}
void FTVectoriser::MakeMesh(FTGL_DOUBLE zNormal, int outsetType, float outsetSize)
{
if(mesh)
{
delete mesh;
}
mesh = new FTMesh;
GLUtesselator* tobj = gluNewTess();
gluTessCallback(tobj, GLU_TESS_BEGIN_DATA, (GLUTesselatorFunction)ftglBegin);
gluTessCallback(tobj, GLU_TESS_VERTEX_DATA, (GLUTesselatorFunction)ftglVertex);
gluTessCallback(tobj, GLU_TESS_COMBINE_DATA, (GLUTesselatorFunction)ftglCombine);
gluTessCallback(tobj, GLU_TESS_END_DATA, (GLUTesselatorFunction)ftglEnd);
gluTessCallback(tobj, GLU_TESS_ERROR_DATA, (GLUTesselatorFunction)ftglError);
if(contourFlag & ft_outline_even_odd_fill) // ft_outline_reverse_fill
{
gluTessProperty(tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_ODD);
}
else
{
gluTessProperty(tobj, GLU_TESS_WINDING_RULE, GLU_TESS_WINDING_NONZERO);
}
gluTessProperty(tobj, GLU_TESS_TOLERANCE, 0);
gluTessNormal(tobj, 0.0f, 0.0f, zNormal);
gluTessBeginPolygon(tobj, mesh);
for(size_t c = 0; c < ContourCount(); ++c)
{
/* Build the */
switch(outsetType)
{
case 1 : contourList[c]->buildFrontOutset(outsetSize); break;
case 2 : contourList[c]->buildBackOutset(outsetSize); break;
}
const FTContour* contour = contourList[c];
gluTessBeginContour(tobj);
for(size_t p = 0; p < contour->PointCount(); ++p)
{
const FTGL_DOUBLE* d;
switch(outsetType)
{
case 1: d = contour->FrontPoint(p); break;
case 2: d = contour->BackPoint(p); break;
case 0: default: d = contour->Point(p); break;
}
// XXX: gluTessVertex doesn't modify the data but does not
// specify "const" in its prototype, so we cannot cast to
// a const type.
gluTessVertex(tobj, (GLdouble *)d, (GLvoid *)d);
}
gluTessEndContour(tobj);
}
gluTessEndPolygon(tobj);
gluDeleteTess(tobj);
}
const FTContour* const FTVectoriser::Contour(size_t index) const
{
return (index < ContourCount()) ? contourList[index] : NULL;
}