private void UpdateScene()
{
Console.WriteLine("\nFRAME CREATION START");
sw.Restart();
bool backFaceCulling = GlobalOptions.BackFaceCulling;
//Getting all triangles in world coordinates
var worldTriangles = new List <Triangle>();
foreach (var buttonFigure in _buttonFigures)
{
var figure = buttonFigure.Value;
worldTriangles.AddRange(figure.WorldTriangles);
}
//Camera stuff
var camera = _buttonCameras[_selectedCameraButton];
camera.RefreshProjectionMatrix();
var cameraMatrix = camera.ProjectionMatrix * camera.ViewMatrix;
//Calculate Screen Coordinates
for (var i = 0; i < worldTriangles.Count; i++)
{
var triangle = worldTriangles[i];
triangle.number = i;
triangle.CalculateScreenCoordinates(cameraMatrix);
}
Console.WriteLine("BEFORE CULLING = " + worldTriangles.Count);
// foreach (var triangle in worldTriangles) Console.WriteLine(triangle);
if (backFaceCulling)
{
worldTriangles = worldTriangles.Where(t => !t.BackFaced).ToList();
}
Console.WriteLine("AFTER CULLING = " + worldTriangles.Count);
// foreach (var triangle in worldTriangles) Console.WriteLine(triangle);
var clippedTriangles = new List <Triangle>();
foreach (var triangle in worldTriangles)
{
clippedTriangles.AddRange(Clipping.ClipsTriangle(triangle));
}
clippedTriangles = clippedTriangles.Where(t => t.IsGoodTriangle()).ToList();
Console.WriteLine("AFTER CLIPPING = " + clippedTriangles.Count);
// foreach (var triangle in clippedTriangles) Console.WriteLine(triangle);
List <Texel>[] texelsArray = new List <Texel> [clippedTriangles.Count];
Parallel.For(0, texelsArray.Length, i =>
{
var tri = clippedTriangles[i];
var vertices = Renderer.Rasterize(tri);
texelsArray[i] = vertices.Select(v => Lightning.CalculateTexel(v)).ToList();
});
//Draw pixels to buffer
var buffer = CreateNewBuffer();
var depthBuffer = CreateNewDepthBuffer();
ClearBuffer(buffer);
Parallel.For(0, texelsArray.Length, body: i => { DrawTexels(texelsArray[i], buffer, depthBuffer); });
CommitDrawWithBuffer(buffer);
ShowFrameRate();
Console.WriteLine("Camera Position = " + camera.P);
// Console.WriteLine("Front vector = " + camera.F);
}