GlyphBitmap GetGlyphBitmapFromColorOutlineGlyph(ushort glyphIndex, GlyphMeshStore glyphMeshStore, ushort colorLayerStart)
{
//not found=> create a newone
Typography.OpenFont.Tables.COLR _colrTable = _typeface.COLRTable;
Typography.OpenFont.Tables.CPAL _cpalTable = _typeface.CPALTable;
Q1RectD totalBounds = Q1RectD.ZeroIntersection();
{
//calculate bounds of this glyph
ushort colorLayerCount = _colrTable.LayerCounts[glyphIndex];
for (int c = colorLayerStart; c < colorLayerStart + colorLayerCount; ++c)
{
BoundingRect.GetBoundingRect(glyphMeshStore.GetGlyphMesh(_colrTable.GlyphLayers[c]), ref totalBounds);
}
}
//dbugExportCount++;
var memBmp = new MemBitmap((int)Math.Round(totalBounds.Width), (int)Math.Round(totalBounds.Height));//???
int offset_x = 0;
int offset_y = 0;
using (Tools.BorrowAggPainter(memBmp, out AggPainter painter))
{
painter.Clear(Color.Transparent);
painter.SetOrigin(0, 0);
offset_x = -(int)(totalBounds.Left);
offset_y = -(int)(totalBounds.Bottom);
ushort colorLayerCount = _colrTable.LayerCounts[glyphIndex];
int palette = 0; // FIXME: assume palette 0 for now
for (int c = colorLayerStart; c < colorLayerStart + colorLayerCount; ++c)
{
_cpalTable.GetColor(
_cpalTable.Palettes[palette] + _colrTable.GlyphPalettes[c], //index
out byte r, out byte g, out byte b, out byte a);
ushort gIndex = _colrTable.GlyphLayers[c];
VertexStore vxs = glyphMeshStore.GetGlyphMesh(gIndex);
using (Tools.BorrowVxs(out var v1))
{
vxs.TranslateToNewVxs(offset_x, offset_y, v1);
painter.FillColor = new Color(r, g, b);//? a component
painter.Fill(v1);
}
}
//find ex
#if DEBUG
//memBmp.SaveImage("a0x" + (dbugExportCount) + ".png");
#endif
}
return(new GlyphBitmap
{
Bitmap = memBmp,
Width = memBmp.Width,
Height = memBmp.Height,
ImageStartX = -offset_x, //offset back
ImageStartY = -offset_y //offset back
});
}
