protected override DX11IndexedGeometry GetGeom(DX11RenderContext context, int slice)
{
Grid grid = new Grid()
{
ResolutionX = this.FResX[slice],
ResolutionY = this.FResY[slice],
Size = this.FSize[slice]
};
return context.Primitives.Grid(grid);
}
public DX11IndexedGeometry Grid(Grid settings)
{
Vector2 size = settings.Size;
int resX = settings.ResolutionX;
int resY = settings.ResolutionY;
DX11IndexedGeometry geom = new DX11IndexedGeometry(context);
geom.Tag = settings;
geom.PrimitiveType = "Grid";
DataStream ds = new DataStream(resX * resY * Pos4Norm3Tex2Vertex.VertexSize, true, true);
ds.Position = 0;
float sx = 0.5f * size.X;
float sy = 0.5f * size.Y;
float ix = (sx / Convert.ToSingle(resX - 1)) * 2.0f;
float iy = (sy / Convert.ToSingle(resY - 1)) * 2.0f;
float y = -sy;
Pos4Norm3Tex2Vertex v = new Pos4Norm3Tex2Vertex();
v.Normals = new Vector3(0, 0, -1.0f);
for (int i = 0; i < resY; i++)
{
float x = -sx;
for (int j = 0; j < resX; j++)
{
v.Position = new Vector4(x, y, 0.0f, 1.0f);
v.TexCoords.X = Convert.ToSingle(Map((float)j, 0.0f, resX - 1, 0.0f, 1.0f));
v.TexCoords.Y = Convert.ToSingle(Map((float)i, 0.0f, resY - 1, 1.0f, 0.0f));
x += ix;
ds.Write<Pos4Norm3Tex2Vertex>(v);
}
y += iy;
}
ds.Position = 0;
var vertices = new SlimDX.Direct3D11.Buffer(context.Device, ds, new BufferDescription()
{
BindFlags = BindFlags.VertexBuffer,
CpuAccessFlags = CpuAccessFlags.None,
OptionFlags = ResourceOptionFlags.None,
SizeInBytes = (int)ds.Length,
Usage = ResourceUsage.Default
});
ds.Dispose();
List<int> indlist = new List<int>();
for (int j = 0; j < resY - 1; j++)
{
int rowlow = (j * resX);
int rowup = ((j + 1) * resX);
for (int i = 0; i < resX - 1; i++)
{
int col = i * (resX - 1);
indlist.Add(0 + rowlow + i);
indlist.Add(0 + rowup + i);
indlist.Add(1 + rowlow + i);
indlist.Add(1 + rowlow + i);
indlist.Add(0 + rowup + i);
indlist.Add(1 + rowup + i);
}
}
var indexstream = new DataStream(indlist.Count * 4, true, true);
indexstream.WriteRange(indlist.ToArray());
indexstream.Position = 0;
geom.VertexBuffer = vertices;
geom.IndexBuffer = new DX11IndexBuffer(context, indexstream, false, true);
geom.InputLayout = Pos4Norm3Tex2Vertex.Layout;
geom.Topology = PrimitiveTopology.TriangleList;
geom.VerticesCount = resX * resY;
geom.VertexSize = Pos4Norm3Tex2Vertex.VertexSize;
geom.HasBoundingBox = true;
geom.BoundingBox = new BoundingBox(new Vector3(-sx, -sy, 0.0f), new Vector3(sx, sy, 0.0f));
return geom;
}