private void BuildGeometry()
{
geom = GpuDemGeometry.CreateGeometry(rDb, gDevice, out maxDataValue, reader);
clipBottomSideQuad = new CustomVertex.PositionColored[4];
int clr = Color.DarkGray.ToArgb();
clipBottomSideQuad[1] = new CustomVertex.PositionColored(0, -0.5f, 0, clr);
clipBottomSideQuad[0] = new CustomVertex.PositionColored(0, -0.5f, 5, clr);
clipBottomSideQuad[3] = new CustomVertex.PositionColored(5, -0.5f, 0, clr);
clipBottomSideQuad[2] = new CustomVertex.PositionColored(5, -0.5f, 5, clr);
}
public static GpuDemGeometry CreateGeometry(RasterDatabase.RasterDatabase rDatabase, Device gDevice,
out float maxValue, GDALReader reader)
{
// create actual geometry - tesselated plane
IndexBuffer geomPlaneIndices;
PlaneHelper.CreateIndexBuffer(gDevice, 14, 14, out geomPlaneIndices);
VertexBuffer geomPlaneVerts;
PlaneHelper.CreateVertexBufferInside(gDevice, 16, 16, new Vector2(1, 1), out geomPlaneVerts);
VertexBuffer geomPatchVerts;
PlaneHelper.CreatePatchVertexBuffer(gDevice, 16, 16, new Vector2(1, 1), out geomPatchVerts);
IndexBuffer geomPatchIndices;
PlaneHelper.CreatePatchIndexBuffer(gDevice, 16, 16, out geomPatchIndices);
// create cache of all depths
RectangleGroupQuadTree rTree = rDatabase.ProduceLayerMipMap(0, 256);
RectangleGroupQuadTree.GroupNode[][] dataNodes = new RectangleGroupQuadTree.GroupNode[rTree.Depth][];
for (int depth = 0; depth < rTree.Depth; depth++)
{
RectangleGroupQuadTree.GroupNode[] nodes;
rTree.GetNodes(depth + 1, out nodes);
dataNodes[depth] = nodes;
}
GpuDemGeometry geom = new GpuDemGeometry(new Vector3(), new Vector3(10, 0, 10), new Vector3(5, 0, 5),
16 * 16, 15 * 15 * 2, PrimitiveType.TriangleList,
gDevice);
geom.geomPlaneVerts = geomPlaneVerts;
geom.geomPlaneIndices = geomPlaneIndices;
geom.geomPatchIndices = geomPatchIndices;
geom.geomPatchVerts = geomPatchVerts;
geom.reader = reader;
geom.dataNodes = dataNodes;
geom.ViewUpdated(new Vector3());
maxValue = 1;
return(geom);
}