/// <summary>
/// This takes the feedback data and turns it into triangles.
/// </summary>
/// <param name="gl"></param>
/// <param name="values">The number of triangles.</param>
protected override void ParseData(OpenGL gl, int values)
{
int count = values;
// Create the triangle.
triangle = new Polygon();
triangle.Name = "Triangulated Polygon";
// For every value in the buffer...
while (count != 0)
{
// Get the token.
float token = feedbackBuffer[values - count];
// Decrement count (move to the next token).
count--;
// Check the type of the token.
switch ((int)token)
{
case (int)OpenGL.GL_PASS_THROUGH_TOKEN:
count--;
break;
case (int)OpenGL.GL_POINT_TOKEN:
// We use only polygons, skip this single vertex (11 floats).
count -= 11;
break;
case (int)OpenGL.GL_LINE_TOKEN:
// We use only polygons, skip this vertex pair (22 floats).
count -= 22;
break;
case (int)OpenGL.GL_LINE_RESET_TOKEN:
// We use only polygons, skip this vertex pair (22 floats).
count -= 22;
break;
case (int)OpenGL.GL_POLYGON_TOKEN:
// Get the number of vertices.
int vertexCount = (int)feedbackBuffer[values - count--];
// Create an array of vertices.
Vertex[] vertices = new Vertex[vertexCount];
// Parse them.
for (int i = 0; i < vertexCount; i++)
{
vertices[i] = new Vertex();
double x = (double)feedbackBuffer[values - count--];
double y = (double)feedbackBuffer[values - count--];
double z = (double)feedbackBuffer[values - count--];
double[] coords = gl.UnProject(x, y, z);
vertices[i].X = (float)coords[0];
vertices[i].Y = (float)coords[1];
vertices[i].Z = (float)coords[2];
// Ignore the four r,g,b,a values and four material coords.
count -= 8;
}
// Add a new face to the current polygon.
triangle.AddFaceFromVertexData(vertices);
break;
}
}
// Triangulate it.
triangle.Triangulate();
}
/// <summary>
/// This takes the feedback data and turns it into triangles.
/// </summary>
/// <param name="gl"></param>
/// <param name="values">The number of triangles.</param>
protected override void ParseData(OpenGL gl, int values)
{
int count = values;
// Create the triangle.
triangle = new Polygon();
triangle.Name = "Triangulated Polygon";
// For every value in the buffer...
while (count != 0)
{
// Get the token.
float token = feedbackBuffer[values - count];
// Decrement count (move to the next token).
count--;
// Check the type of the token.
switch ((int)token)
{
case (int)OpenGL.GL_PASS_THROUGH_TOKEN:
count--;
break;
case (int)OpenGL.GL_POINT_TOKEN:
// We use only polygons, skip this single vertex (11 floats).
count -= 11;
break;
case (int)OpenGL.GL_LINE_TOKEN:
// We use only polygons, skip this vertex pair (22 floats).
count -= 22;
break;
case (int)OpenGL.GL_LINE_RESET_TOKEN:
// We use only polygons, skip this vertex pair (22 floats).
count -= 22;
break;
case (int)OpenGL.GL_POLYGON_TOKEN:
// Get the number of vertices.
int vertexCount = (int)feedbackBuffer[values - count--];
// Create an array of vertices.
Vertex[] vertices = new Vertex[vertexCount];
// Parse them.
for (int i = 0; i < vertexCount; i++)
{
vertices[i] = new Vertex();
double x = (double)feedbackBuffer[values - count--];
double y = (double)feedbackBuffer[values - count--];
double z = (double)feedbackBuffer[values - count--];
double[] coords = gl.UnProject(x, y, z);
vertices[i].X = (float)coords[0];
vertices[i].Y = (float)coords[1];
vertices[i].Z = (float)coords[2];
// Ignore the four r,g,b,a values and four material coords.
count -= 8;
}
// Add a new face to the current polygon.
triangle.AddFaceFromVertexData(vertices);
break;
}
}
// Triangulate it.
triangle.Triangulate();
}
