public void CanConvertTriangleStripToTriangleList()
{
// Arrange.
Int32Collection indices = new Int32Collection(new[] { 0, 3, 1, 4, 2, 5 });
// Act.
Int32Collection newIndices = MeshUtility.ConvertTriangleStripToTriangleList(indices);
// Assert.
CollectionAssert.AreEqual(new[] { 0, 3, 1, 1, 3, 4, 1, 4, 2, 2, 4, 5 }, newIndices);
}
public override void Tessellate()
{
// Create vertices.
Vector3D normal = new Vector3D(0, 1, 0);
for (int z = 0; z < _length; ++z)
{
for (int x = 0; x < _width; ++x)
{
AddVertex(new Point3D(x, 0, (_length - 1) - z), normal); // Invert z so that winding order is correct.
}
}
// Create indices.
for (int z = 0; z < _length - 1; ++z)
{
for (int x = 0; x < _width; ++x)
{
// Create vertex for degenerate triangle.
if (x == 0 && z > 0)
{
AddIndex(((z + 0) * _width) + x);
}
AddIndex(((z + 0) * _width) + x);
AddIndex(((z + 1) * _width) + x);
// Create vertex for degenerate triangle.
if (x == _width - 1 && z < _length - 2)
{
AddIndex(((z + 1) * _width) + x);
}
}
}
// It's easiest to define the plane in terms of a triangle strip,
// and then convert it.
Int32Collection newIndices = MeshUtility.ConvertTriangleStripToTriangleList(Indices);
Indices.Clear();
Indices.AddRange(newIndices);
}