public Canvas(int width, int height, Color color)
{
_width = width;
_height = height;
Bitmap bitmap = new Bitmap(_width, _height);
_bitmapLock = new BitmapLock(bitmap, ImageLockMode.ReadWrite);
FillBitmap(color);
_zBuffer = new float[_width, _height];
for (int x = 0; x < _width; x++)
{
for (int y = 0; y < _height; y++)
{
_zBuffer[x, y] = float.MinValue;
}
}
}
public void DrawMesh(Mesh mesh, Line.LineType lineType)
{
_depth = mesh.Polygons.Max(p => p.Vertices.Max(v => v.Z)) -
mesh.Polygons.Min(p => p.Vertices.Min(v => v.Z));
_texture = new BitmapLock(mesh.Texture, ImageLockMode.ReadOnly);
if (_cameraType == CameraType.Perspective)
{
_viewport = GetViewport();
_view = LookAt(new Vector3(-0.2f, 0.3f, 0), new Vector3(0.5f, 1, 0));
}
_shader = new GouraudVertexShader(_lightDirection)
{
View = _view,
Viewport = _viewport
};
foreach (Polygon polygon in mesh.Polygons)
{
for (int i = 0; i < polygon.Vertices.Length; i++)
{
polygon.Vertices[i] = TransformVector(polygon.Vertices[i]);
}
float intensity = 0f;
if (IsPolygonShouldBeDrawn(polygon, out intensity))
{
if (polygon.UVs.Length == 0)
{
DrawPolygon(polygon, intensity, lineType);
}
else
{
DrawPolygonWithTex(polygon, lineType);
}
}
}
}