public static SharpDX.Direct3D11.Buffer CreateVertexBuffer(Device device, Kinect2.Kinect2Calibration kinect2Calibration)
{
// generate depthFrameToCameraSpace table
var depthFrameToCameraSpaceTable = kinect2Calibration.ComputeDepthFrameToCameraSpaceTable(depthImageWidth, depthImageHeight);
int numVertices = 6 * (depthImageWidth - 1) * (depthImageHeight - 1);
var vertices = new VertexPosition[numVertices];
Int3[] quadOffsets = new Int3[]
{
new Int3(0, 0, 0),
new Int3(1, 0, 0),
new Int3(0, 1, 0),
new Int3(1, 0, 0),
new Int3(1, 1, 0),
new Int3(0, 1, 0),
};
int vertexIndex = 0;
for (int y = 0; y < depthImageHeight - 1; y++)
for (int x = 0; x < depthImageWidth - 1; x++)
for (int i = 0; i < 6; i++)
{
int vertexX = x + quadOffsets[i].X;
int vertexY = y + quadOffsets[i].Y;
var point = depthFrameToCameraSpaceTable[depthImageWidth * vertexY + vertexX];
var vertex = new VertexPosition();
vertex.position = new SharpDX.Vector4(point.X, point.Y, vertexX, vertexY);
vertices[vertexIndex++] = vertex;
}
var stream = new DataStream(numVertices * VertexPosition.SizeInBytes, true, true);
stream.WriteRange(vertices);
stream.Position = 0;
var vertexBufferDesc = new BufferDescription()
{
BindFlags = BindFlags.VertexBuffer,
CpuAccessFlags = CpuAccessFlags.None,
Usage = ResourceUsage.Default,
SizeInBytes = numVertices * VertexPosition.SizeInBytes,
};
var vertexBuffer = new SharpDX.Direct3D11.Buffer(device, stream, vertexBufferDesc);
stream.Dispose();
return vertexBuffer;
}
