public PathRenderVx CreatePathRenderVx(VertexStore vxs)
{
double prevX = 0;
double prevY = 0;
double prevMoveToX = 0;
double prevMoveToY = 0;
_xylist.Clear();
_figs.Clear();
//TODO: reivew here
//about how to reuse this list
//result...
int index = 0;
VertexCmd cmd;
double x, y;
while ((cmd = vxs.GetVertex(index++, out x, out y)) != VertexCmd.NoMore)
{
switch (cmd)
{
case PixelFarm.CpuBlit.VertexCmd.MoveTo:
prevMoveToX = prevX = x;
prevMoveToY = prevY = y;
_xylist.Add((float)x);
_xylist.Add((float)y);
break;
case PixelFarm.CpuBlit.VertexCmd.LineTo:
_xylist.Add((float)x);
_xylist.Add((float)y);
prevX = x;
prevY = y;
break;
case PixelFarm.CpuBlit.VertexCmd.Close:
{
//from current point
_xylist.Add((float)prevMoveToX);
_xylist.Add((float)prevMoveToY);
prevX = prevMoveToX;
prevY = prevMoveToY;
//-----------
Figure newfig = new Figure(_xylist.ToArray());
newfig.IsClosedFigure = true;
_figs.Add(newfig);
//-----------
_xylist.Clear(); //clear temp list
}
break;
case VertexCmd.CloseAndEndFigure:
{
//from current point
_xylist.Add((float)prevMoveToX);
_xylist.Add((float)prevMoveToY);
prevX = prevMoveToX;
prevY = prevMoveToY;
//
Figure newfig = new Figure(_xylist.ToArray());
newfig.IsClosedFigure = true;
_figs.Add(newfig);
//-----------
_xylist.Clear(); //clear temp list
}
break;
case PixelFarm.CpuBlit.VertexCmd.NoMore:
goto EXIT_LOOP;
default:
throw new System.NotSupportedException();
}
}
EXIT_LOOP:
if (_figs.Count == 0)
{
Figure newfig = new Figure(_xylist.ToArray());
newfig.IsClosedFigure = false;
return(new PathRenderVx(newfig));
}
//
if (_xylist.Count > 1)
{
_xylist.Add((float)prevMoveToX);
_xylist.Add((float)prevMoveToY);
prevX = prevMoveToX;
prevY = prevMoveToY;
//
Figure newfig = new Figure(_xylist.ToArray());
newfig.IsClosedFigure = true; //?
_figs.Add(newfig);
}
if (_figs.Count == 1)
{
Figure fig = _figs[0];
_figs.Clear();
return(new PathRenderVx(fig));
}
else
{
MultiFigures multiFig = new MultiFigures(_figs.ToArray());
_figs.Clear();
return(new PathRenderVx(multiFig));
}
}
void DrawOutput(Painter painter, Typeface typeface, char selectedChar)
{
painter.Clear(Color.White);
//this is a demo.
//
float fontSizeInPts = 300;
_glyphPathBuilder.BuildFromGlyphIndex(typeface.GetGlyphIndex(selectedChar), fontSizeInPts);
var prevColor = painter.StrokeColor;
painter.StrokeColor = Color.Black;
using (Tools.BorrowVxs(out var v1))
using (Tools.BorrowCurveFlattener(out var flattener))
{
_glyphPathBuilder.ReadShapes(_tovxs);
//config
if (rdoSimpleIncCurveFlattener.Checked)
{
flattener.ApproximationMethod = CurveApproximationMethod.Inc;
if (int.TryParse(txtIncrementalTessStep.Text, out int stepCount))
{
if (stepCount < 0)
{
//auto calculate inc step count
flattener.IncUseFixedStep = false;
}
else
{
//fix manual inc step count
flattener.IncUseFixedStep = true;
flattener.IncStepCount = stepCount;
}
}
}
else
{
flattener.ApproximationMethod = CurveApproximationMethod.Div;
if (double.TryParse(txtDivAngleTolerenceEpsilon.Text, out double angleTolerance))
{
flattener.AngleTolerance = angleTolerance;
}
if (byte.TryParse(txtDivCurveRecursiveLimit.Text, out byte recursiveLim))
{
flattener.RecursiveLimit = recursiveLim;
}
}
_tovxs.WriteOutput(v1, flattener); //write content from GlyphTranslator to v1
painter.Fill(v1, PixelFarm.Drawing.KnownColors.Gray);
_tovxs.Reset();
//tess the vxs
FigureBuilder figBuilder = new FigureBuilder();
FigureContainer container = figBuilder.Build(v1);
TessTriangleTechnique tessTechnique = TessTriangleTechnique.DrawElement;
if (container.IsSingleFigure)
{
Figure figure = container._figure;
if (rdoTessSGI.Checked)
{
//coords of tess triangles
switch (tessTechnique)
{
case TessTriangleTechnique.DrawArray:
{
DrawTessTriangles(painter, figure.GetAreaTess(_tessTool, _tessTool.WindingRuleType, TessTriangleTechnique.DrawArray));
}
break;
case TessTriangleTechnique.DrawElement:
{
float[] tessArea = figure.GetAreaTess(_tessTool, _tessTool.WindingRuleType, TessTriangleTechnique.DrawElement);
ushort[] index = figure.GetAreaIndexList();
DrawTessTriangles(painter, tessArea, index);
}
break;
}
}
else
{
if (chkShowContourAnalysis.Checked)
{
ContourAnalyzer analyzer1 = new ContourAnalyzer();
IntermediateOutline outline = analyzer1.CreateIntermediateOutline(v1);
var dbugVisualizer = new PixelFarm.GlyphDebugContourVisualizer();
dbugVisualizer.SetPainter(painter);
dbugVisualizer.Scale = _typeface.CalculateScaleToPixelFromPointSize(fontSizeInPts);
dbugVisualizer.WalkCentroidLine(outline);
}
else
{
//Poly2Tri
List <Poly2Tri.Polygon> polygons = figure.GetTrianglulatedArea(false);
//draw polygon
painter.StrokeColor = Color.Red;
DrawPoly2TriPolygon(painter, polygons);
}
}
}
else
{
MultiFigures multiFig = container._multiFig;
if (rdoTessSGI.Checked)
{
switch (tessTechnique)
{
case TessTriangleTechnique.DrawArray:
{
DrawTessTriangles(painter, multiFig.GetAreaTess(_tessTool, _tessTool.WindingRuleType, TessTriangleTechnique.DrawArray));
}
break;
case TessTriangleTechnique.DrawElement:
{
float[] tessArea = multiFig.GetAreaTess(_tessTool, _tessTool.WindingRuleType, TessTriangleTechnique.DrawElement);
ushort[] index = multiFig.GetAreaIndexList();
DrawTessTriangles(painter, tessArea, index);
}
break;
}
}
else
{
if (chkShowContourAnalysis.Checked)
{
ContourAnalyzer analyzer1 = new ContourAnalyzer();
IntermediateOutline outline = analyzer1.CreateIntermediateOutline(v1);
var dbugVisualizer = new PixelFarm.GlyphDebugContourVisualizer();
dbugVisualizer.SetPainter(painter);
dbugVisualizer.Scale = _typeface.CalculateScaleToPixelFromPointSize(fontSizeInPts);
dbugVisualizer.WalkCentroidLine(outline);
}
else
{
List <Poly2Tri.Polygon> polygons = multiFig.GetTrianglulatedArea(false);
painter.StrokeColor = Color.Red;
DrawPoly2TriPolygon(painter, polygons);
}
}
}
}
painter.StrokeColor = prevColor;
//-------------
//tess
//if (rdoTessSGI.Checked)
//{
// //SGI Tess Lib
// if (!_tessTool.TessPolygon(polygon1, _contourEnds))
// {
// return;
// }
// //1.
// List<ushort> indexList = _tessTool.TessIndexList;
// //2.
// List<TessVertex2d> tempVertexList = _tessTool.TempVertexList;
// //3.
// int vertexCount = indexList.Count;
// //-----------------------------
// int orgVertexCount = polygon1.Length / 2;
// float[] vtx = new float[vertexCount * 2];//***
// int n = 0;
// for (int p = 0; p < vertexCount; ++p)
// {
// ushort index = indexList[p];
// if (index >= orgVertexCount)
// {
// //extra coord (newly created)
// TessVertex2d extraVertex = tempVertexList[index - orgVertexCount];
// vtx[n] = (float)extraVertex.x;
// vtx[n + 1] = (float)extraVertex.y;
// }
// else
// {
// //original corrd
// vtx[n] = (float)polygon1[index * 2];
// vtx[n + 1] = (float)polygon1[(index * 2) + 1];
// }
// n += 2;
// }
// //-----------------------------
// //draw tess result
// int j = vtx.Length;
// for (int i = 0; i < j;)
// {
// var p0 = new PointF(vtx[i], vtx[i + 1]);
// var p1 = new PointF(vtx[i + 2], vtx[i + 3]);
// var p2 = new PointF(vtx[i + 4], vtx[i + 5]);
// _g.DrawLine(Pens.Red, p0, p1);
// _g.DrawLine(Pens.Red, p1, p2);
// _g.DrawLine(Pens.Red, p2, p0);
// i += 6;
// }
//}
//else
//{
// List<Poly2Tri.Polygon> outputPolygons = new List<Poly2Tri.Polygon>();
// Poly2TriExampleHelper.Triangulate(polygon1, contourEndIndices, flipYAxis, outputPolygons);
// foreach (Poly2Tri.Polygon polygon in outputPolygons)
// {
// foreach (Poly2Tri.DelaunayTriangle tri in polygon.Triangles)
// {
// Poly2Tri.TriangulationPoint p0 = tri.P0;
// Poly2Tri.TriangulationPoint p1 = tri.P1;
// Poly2Tri.TriangulationPoint p2 = tri.P2;
// _g.DrawLine(Pens.Red, (float)p0.X, (float)p0.Y, (float)p1.X, (float)p1.Y);
// _g.DrawLine(Pens.Red, (float)p1.X, (float)p1.Y, (float)p2.X, (float)p2.Y);
// _g.DrawLine(Pens.Red, (float)p2.X, (float)p2.Y, (float)p0.X, (float)p0.Y);
// }
// }
//}
}
void DrawOutput(Painter painter, Typeface typeface, char selectedChar)
{
#if DEBUG
painter.Clear(Color.White);
//this is a demo.
//
float fontSizeInPts = 300;
_glyphPathBuilder.BuildFromGlyphIndex(typeface.GetGlyphIndex(selectedChar), fontSizeInPts);
var prevColor = painter.StrokeColor;
painter.StrokeColor = Color.Black;
using (Tools.BorrowVxs(out var v1))
{
_glyphPathBuilder.ReadShapes(_tovxs);
_tovxs.WriteOutput(v1); //write content from GlyphTranslator to v1
painter.Fill(v1, KnownColors.Gray);
_tovxs.Reset();
//tess the vxs
FigureBuilder figBuilder = new FigureBuilder();
FigureContainer container = figBuilder.Build(v1);
TessTriangleTechnique tessTechnique = TessTriangleTechnique.DrawElement;
if (container.IsSingleFigure)
{
Figure figure = container._figure;
if (Tess == GlyphDemo_TessTech.SgiTess)
{
//coords of tess triangles
switch (tessTechnique)
{
case TessTriangleTechnique.DrawArray:
{
painter.dbugDrawTessTriangles(figure.GetAreaTess(_tessTool, _tessTool.WindingRuleType, TessTriangleTechnique.DrawArray));
}
break;
case TessTriangleTechnique.DrawElement:
{
float[] tessArea = figure.GetAreaTess(_tessTool, _tessTool.WindingRuleType, TessTriangleTechnique.DrawElement);
ushort[] index = figure.GetAreaIndexList();
painter.dbugDrawTessTriangles(tessArea, index);
}
break;
}
}
else
{
if (ContourAnalysis)
{
ContourAnalyzer analyzer1 = new ContourAnalyzer();
IntermediateOutline outline = analyzer1.CreateIntermediateOutline(v1);
GlyphDebugContourVisualizer dbugVisualizer = new GlyphDebugContourVisualizer();
dbugVisualizer.SetPainter(painter);
dbugVisualizer.Scale = _typeface.CalculateScaleToPixelFromPointSize(fontSizeInPts);
dbugVisualizer.WalkCentroidLine(outline);
}
else
{
//Poly2Tri
List <Poly2Tri.Polygon> polygons = figure.GetTrianglulatedArea(false);
//draw polygon
painter.StrokeColor = Color.Red;
painter.dbugDrawPoly2TriPolygon(polygons);
}
}
}
else
{
MultiFigures multiFig = container._multiFig;
if (Tess == GlyphDemo_TessTech.SgiTess)
{
switch (tessTechnique)
{
case TessTriangleTechnique.DrawArray:
{
painter.dbugDrawTessTriangles(multiFig.GetAreaTess(_tessTool, _tessTool.WindingRuleType, TessTriangleTechnique.DrawArray));
}
break;
case TessTriangleTechnique.DrawElement:
{
float[] tessArea = multiFig.GetAreaTess(_tessTool, _tessTool.WindingRuleType, TessTriangleTechnique.DrawElement);
ushort[] index = multiFig.GetAreaIndexList();
painter.dbugDrawTessTriangles(tessArea, index);
}
break;
}
}
else
{
if (ContourAnalysis)
{
ContourAnalyzer analyzer1 = new ContourAnalyzer();
IntermediateOutline outline = analyzer1.CreateIntermediateOutline(v1);
GlyphDebugContourVisualizer dbugVisualizer = new GlyphDebugContourVisualizer();
dbugVisualizer.SetPainter(painter);
dbugVisualizer.Scale = _typeface.CalculateScaleToPixelFromPointSize(fontSizeInPts);
dbugVisualizer.WalkCentroidLine(outline);
}
else
{
List <Poly2Tri.Polygon> polygons = multiFig.GetTrianglulatedArea(false);
painter.StrokeColor = Color.Red;
painter.dbugDrawPoly2TriPolygon(polygons);
}
}
}
}
painter.StrokeColor = prevColor;
//-------------
//tess
//if (rdoTessSGI.Checked)
//{
// //SGI Tess Lib
// if (!_tessTool.TessPolygon(polygon1, _contourEnds))
// {
// return;
// }
// //1.
// List<ushort> indexList = _tessTool.TessIndexList;
// //2.
// List<TessVertex2d> tempVertexList = _tessTool.TempVertexList;
// //3.
// int vertexCount = indexList.Count;
// //-----------------------------
// int orgVertexCount = polygon1.Length / 2;
// float[] vtx = new float[vertexCount * 2];//***
// int n = 0;
// for (int p = 0; p < vertexCount; ++p)
// {
// ushort index = indexList[p];
// if (index >= orgVertexCount)
// {
// //extra coord (newly created)
// TessVertex2d extraVertex = tempVertexList[index - orgVertexCount];
// vtx[n] = (float)extraVertex.x;
// vtx[n + 1] = (float)extraVertex.y;
// }
// else
// {
// //original corrd
// vtx[n] = (float)polygon1[index * 2];
// vtx[n + 1] = (float)polygon1[(index * 2) + 1];
// }
// n += 2;
// }
// //-----------------------------
// //draw tess result
// int j = vtx.Length;
// for (int i = 0; i < j;)
// {
// var p0 = new PointF(vtx[i], vtx[i + 1]);
// var p1 = new PointF(vtx[i + 2], vtx[i + 3]);
// var p2 = new PointF(vtx[i + 4], vtx[i + 5]);
// _g.DrawLine(Pens.Red, p0, p1);
// _g.DrawLine(Pens.Red, p1, p2);
// _g.DrawLine(Pens.Red, p2, p0);
// i += 6;
// }
//}
//else
//{
// List<Poly2Tri.Polygon> outputPolygons = new List<Poly2Tri.Polygon>();
// Poly2TriExampleHelper.Triangulate(polygon1, contourEndIndices, flipYAxis, outputPolygons);
// foreach (Poly2Tri.Polygon polygon in outputPolygons)
// {
// foreach (Poly2Tri.DelaunayTriangle tri in polygon.Triangles)
// {
// Poly2Tri.TriangulationPoint p0 = tri.P0;
// Poly2Tri.TriangulationPoint p1 = tri.P1;
// Poly2Tri.TriangulationPoint p2 = tri.P2;
// _g.DrawLine(Pens.Red, (float)p0.X, (float)p0.Y, (float)p1.X, (float)p1.Y);
// _g.DrawLine(Pens.Red, (float)p1.X, (float)p1.Y, (float)p2.X, (float)p2.Y);
// _g.DrawLine(Pens.Red, (float)p2.X, (float)p2.Y, (float)p0.X, (float)p0.Y);
// }
// }
//}
#endif
}