public GeometryElements(uint batchSize, GeometryData sharedGeometry, RenderOptions sharedRenderOptions) : base(BatchExecution.DrawElements, batchSize)
{
this.sharedGeometry = sharedGeometry;
this.sharedRenderOptions = sharedRenderOptions;
maxBatchSize = (uint)(short.MaxValue / TotalIndices);
if (BatchSize > maxBatchSize)
{
throw new RelatusException($"Given the shared geometry, PolygonElements does not support support a batch size greater than {maxBatchSize}.", new ArgumentOutOfRangeException());
}
vertexPositions = new VertexPosition[batchSize * TotalVertices];
transforms = new VertexTransform[batchSize * TotalVertices];
colors = new VertexColor[batchSize * TotalVertices];
indices = new short[batchSize * TotalIndices];
for (int i = 0; i < batchSize; i++)
{
int start = TotalIndices * i;
int buffer = TotalVertices * i;
for (int j = 0; j < TotalIndices; j++)
{
indices[start + j] = (short)(buffer + this.sharedGeometry.Mesh.Indices[j]);
}
}
indexBuffer = new IndexBuffer(graphicsDevice, typeof(short), indices.Length, BufferUsage.WriteOnly);
indexBuffer.SetData(indices);
}
static SpriteElementsInstanced()
{
graphicsDevice = Engine.Graphics.GraphicsDevice;
spriteShader = AssetManager.GetEffect("Relatus_RelatusEffect");
spritePass = spriteShader.Techniques[2].Passes[0];
sharedGeometry = GeometryManager.GetShapeData(ShapeType.Square);
}
public GeometryElementsInstanced(uint batchSize, GeometryData sharedGeometry, RenderOptions sharedRenderOptions) : base(BatchExecution.DrawElementsInstanced, batchSize)
{
this.sharedGeometry = sharedGeometry;
this.sharedRenderOptions = sharedRenderOptions;
transforms = new VertexTransform[batchSize];
colors = new VertexColor[batchSize];
}
public static void DrawTriangle(Vector3 a, Vector3 b, Vector3 c, Color color, Camera camera)
{
GeometryData temp = new GeometryData(new Mesh(new Vector3[] { a, b, c }, new short[] { 0, 1, 2 }));
RenderOptions renderOptions = new RenderOptions(); //{ RasterizerState = RasterizerState.CullNone };
using GeometryElements geometryGroup = new GeometryElements(1, temp, renderOptions);
geometryGroup.Add(new Polygon()
{
GeometryData = temp, RenderOptions = renderOptions, Tint = color
});
geometryGroup.ApplyChanges();
geometryGroup.Draw(camera);
}
public bool Equals(GeometryData other)
{
return(Mesh == other.Mesh);
}
public PolygonGroup(GeometryData sharedShapeData, int capacity) : base(capacity)
{
this.sharedShapeData = sharedShapeData;
transforms = new VertexTransformColor[capacity];
group = null;
}