public float[] TessPolygon(float[] vertex2dCoords, int[] contourEndPoints, out int areaCount)
{
vertexts.Clear();//reset
//
int ncoords = vertex2dCoords.Length / 2;
if (ncoords == 0)
{
areaCount = 0; return(null);
}
int nn = 0;
for (int i = 0; i < ncoords; ++i)
{
vertexts.Add(new Vertex(vertex2dCoords[nn++], vertex2dCoords[nn++]));
}
//-----------------------
tessListener.Reset(vertexts);
//-----------------------
tess.BeginPolygon();
int nContourCount = contourEndPoints.Length;
int beginAt = 0;
for (int m = 0; m < nContourCount; ++m)
{
int thisContourEndAt = (contourEndPoints[m] + 1) / 2;
tess.BeginContour();
for (int i = beginAt; i < thisContourEndAt; ++i)
{
Vertex v = vertexts[i];
tess.AddVertex(v.m_X, v.m_Y, 0, i);
}
beginAt = thisContourEndAt + 1;
tess.EndContour();
}
tess.EndPolygon();
//-----------------------
List <Vertex> vertextList = tessListener.resultVertexList;
//-----------------------------
//switch how to fill polygon
int j = vertextList.Count;
float[] vtx = new float[j * 2];
int n = 0;
for (int p = 0; p < j; ++p)
{
var v = vertextList[p];
vtx[n] = (float)v.m_X;
vtx[n + 1] = (float)v.m_Y;
n += 2;
}
//triangle list
areaCount = j;
return(vtx);
}
public void ParseStreamForTesselator(Tesselate.Tesselator tesselator, int instructionStreamIndex)
{
m_VertexList.Clear();
m_CurrentOutput = 0;
string[] instructionStream = m_InsructionStream[instructionStreamIndex];
for (int curInstruction = 0; curInstruction < instructionStream.Length; curInstruction++)
{
switch (instructionStream[curInstruction])
{
case "BP":
tesselator.BeginPolygon();
break;
case "BC":
tesselator.BeginContour();
break;
case "V":
double x = Convert.ToDouble(instructionStream[curInstruction + 1]);
double y = Convert.ToDouble(instructionStream[curInstruction + 2]);
curInstruction += 2;
double[] coords = new double[3];
coords[0] = x;
coords[1] = y;
tesselator.AddVertex(coords, m_VertexList.Count);
m_VertexList.Add(new Vertex(x, y));
break;
case "EC":
tesselator.EndContour();
break;
case "EP":
tesselator.EndPolygon();
break;
default:
throw new Exception();
}
}
}
/// <summary>
/// Renders out the junction shape to the screen.
/// </summary>
private void CreateJunctionShape()
{
// Create the AGG tesselator and set it up
Tesselator tess = new Tesselator();
tess.callCombine += OnTesselatorCombine;
tess.callVertex += OnVertex;
tess.callMesh += OnMesh;
tess.callBegin += OnTesselatorBegin;
tess.callEnd += OnTesselatorEnd;
// Go through the junction's internal shape
IPoly poly = State.JunctionManager.Junction.Shape;
renderPoints.Clear();
tess.BeginPolygon();
tess.BeginContour();
for (int i = 0; i < poly.PointCount; i++)
{
// Get the point
PointF p = new PointF(
(float) poly.GetX(i), (float) poly.GetY(i));
// Add the vertex with the index it will have when we
// refer to it later.
tess.AddVertex(
new double [] { p.X, p.Y, 0 },
renderPoints.Count);
// Create the center
renderPoints.Add(p);
}
// Finish up the polygon, which renders the rendering
// commands
//Log.Info("Tesselating {0} points", renderPoints.Count);
tess.EndContour();
tess.EndPolygon();
}
public void ParseStreamForTesselator(Tesselate.Tesselator tesselator, int instructionStreamIndex)
{
m_VertexList.Clear();
m_CurrentOutput = 0;
string[] instructionStream = m_InsructionStream[instructionStreamIndex];
for (int curInstruction = 0; curInstruction < instructionStream.Length; curInstruction++)
{
switch (instructionStream[curInstruction])
{
case "BP":
tesselator.BeginPolygon();
break;
case "BC":
tesselator.BeginContour();
break;
case "V":
double x = Convert.ToDouble(instructionStream[curInstruction + 1]);
double y = Convert.ToDouble(instructionStream[curInstruction + 2]);
curInstruction += 2;
tesselator.AddVertex(x, y, 0, m_VertexList.Count);
m_VertexList.Add(new Vertex(x, y));
break;
case "EC":
tesselator.EndContour();
break;
case "EP":
tesselator.EndPolygon();
break;
default:
throw new Exception();
}
}
//---------------
//test
//------------------
//int a = m_VertexList.Count;
////test draw
//Bitmap bmp = new Bitmap(300, 300);
//Graphics g = Graphics.FromImage(bmp);
//g.Clear(Color.White);
//int j = m_VertexList.Count;
//int lim = j - 1;
//for (int i = 0; i < lim; i++)
//{
// var v1 = m_VertexList[i];
// var v2 = m_VertexList[i + 1];
// g.DrawLine(Pens.Black,
// new PointF((float)v1.m_X, (float)v1.m_Y),
// new PointF((float)v2.m_X, (float)v2.m_Y));
//}
//g.Dispose();
//bmp.Save("tess" + (totalSampleCount++) + ".bmp");
}