public void Initialize()
{
GL.ClearColor(0.5f, 0.5f, 0.5f, 1f);
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
GL.Enable(EnableCap.Multisample);
geoShader.Initialize(VertexShaders.MVPTransformed, FragmentShaders.SolidColor);
spriteShader.Initialize(VertexShaders.MVPTransformed, FragmentShaders.Textured);
texture.Allocate();
origin.Allocate();
origin.SetData(PrimitiveType.Lines,
new Vertex[]
{
new Vertex(-10000, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0),
new Vertex(10000, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0),
new Vertex(0, -10000, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0),
new Vertex(0, 10000, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0)
},
new int[] { 0, 1, 2, 3 },
false
);
quad.Allocate();
}
public void Render(KBuild build, KAnimBank bank, int frameNumber)
{
Matrix4 modelMat = Matrix4.Identity;
Matrix4 pivotMat = Matrix4.Identity;
Matrix4 transformMat = Matrix4.Identity;
geoShader.Activate();
// Draw Origin
geoShader.SetUniform("Model", ref modelMat);
origin.Draw();
if (frameNumber < 0 || frameNumber >= bank.FrameCount)
{
frameNumber = 0;
}
KAnimFrame frame = bank.Frames[frameNumber];
Matrix4 frameMat = Matrix4.CreateTranslation(frame.X, frame.Y, 0);
spriteShader.Activate();
texture.Bind();
for (int i = frame.ElementCount - 1; i >= 0; i--)
{
KAnimElement element = frame.Elements[i];
string symbol = build.GetSymbolName(element.SymbolHash);
if (symbol == null)
{
continue;
}
KFrame sprite = build.GetFrame(symbol, element.FrameNumber);
if (sprite == null)
{
continue;
}
pivotMat = Matrix4.CreateTranslation(sprite.PivotX, sprite.PivotY, 0);
transformMat = new Matrix4(
element.M00, -element.M10, 0, 0,
element.M01, -element.M11, 0, 0,
0, 0, -1, 0,
element.M02, -element.M12, 0, 1
);
modelMat = halfScaleMat * pivotMat * transformMat;
spriteShader.SetUniform("Model", ref modelMat);
MakeQuadVBO(sprite.PivotWidth, sprite.PivotHeight, element.Red, element.Green, element.Blue, element.Alpha, sprite.GetUVRectangle(), out Vertex[] vertices, out int[] elements);
quad.SetData(OpenTK.Graphics.OpenGL.PrimitiveType.Triangles, vertices, elements);
quad.Draw();
}
}
