public static void ToTriangleList <V, I>(this ICsgProvider tree, Func <Polygon, Vertex, V> createVertex, Func <V, I> insertVertex, Action <I, I, I> createTriangle)
{
foreach (var polygon in tree.Polygons)
{
var indices = polygon.Vertices.Select(v => createVertex(polygon, v)).Select(insertVertex).ToArray();
////Triangulate out from one corner
//for (int i = 2; i < indices.Length; i++)
//{
// createTriangle(indices[0], indices[i - 1], indices[i]);
//}
//alternating direction triangles
int topIndex = indices.Length - 1;
int bottomIndex = 0;
while (topIndex > bottomIndex + 1)
{
createTriangle(indices[topIndex], indices[bottomIndex], indices[bottomIndex + 1]);
if (topIndex - 1 != bottomIndex + 1)
{
createTriangle(indices[topIndex], indices[bottomIndex + 1], indices[topIndex - 1]);
}
else
{
break;
}
topIndex--;
bottomIndex++;
}
}
}
public static void ToTriangleList <V, I>(this ICsgProvider tree, Func <Vertex, V> createVertex, Func <V, I> insertVertex, Action <I, I, I> createTriangle)
{
tree.ToTriangleList(
(p, v) => createVertex(v),
insertVertex,
createTriangle
);
}
public static void ToListLine <V, I>(this ICsgProvider tree, Func <Vector3, Vector3, V> positionNormalToVertex, Func <V, I> insertVertex, Action <I, I> createLine)
{
foreach (var polygon in tree.Polygons)
{
var indices = polygon.Vertices.Select(a => positionNormalToVertex(a.Position, a.Normal)).Select(a => insertVertex(a)).ToArray();
for (int i = 0; i < indices.Length; i++)
{
createLine(indices[i], indices[(i + 1) % indices.Length]);
}
}
}
