/// <summary>
/// Creates a square 1x1 surface in XY but with variation of its Z depending on the
/// result of a delegate.
/// Returns a triangle array of the surface, which includes smooth normals and texture coordinates.
/// </summary>
/// <param name="pixelFunc">A delegate that takes the x and y and returns that pixel's height</param>
/// <param name="numX">The number of X elements in a row</param>
/// <param name="numY">The number of X elements in a row</param>
/// <param name="mirrorY">Whether to invert Y</param>
/// <param name="smooth">Whether to apply a 3x3 gaussian smoothing kernel, or not</param>
/// <param name="noiseLevel">How much noise to add</param>
/// <returns>Triangles of the surface, including smooth normals and teture coordinates</returns>
static public VertexPositionNormalTexture[] CreatePlanarSurface
(
XYToZDelegate pixelFunc,
int numX = 256,
int numY = 256,
bool mirrorY = false,
bool smooth = false,
double noiseLevel = 0
)
{
var heightMap = new double[numY, numX];
Parallel.For(0, numX, (x) =>
{
Parallel.For(0, numY, (y) =>
{
heightMap[y, x] = pixelFunc(x, y);
});
});
return(CreatePlanarSurface(heightMap, mirrorY, smooth, noiseLevel));
}
/// <summary>
/// Like the CreateCylindroid overload that takes a heightMap (see that method for details),
/// but rather than a heightMap, this takes a delegate that defines the diameter multiplier.
/// </summary>
/// <param name="pixelFunc">A delegate that takes an x and y and returns the diameter multiplier</param>
/// <param name="numHorizVertices">The number of horizontal vertices in a row</param>
/// <param name="numVertVertices">The number of vertical vertices in a column</param>
/// <param name="topDiameter">Diameter of top of cylindroid (if heightMap==null)</param>
/// <param name="facetedNormals">If true, create normals per triangle. If false, create smooth normals</param>
/// <param name="createBody">Whether to create the body of the cylindroid</param>
/// <param name="createEndCaps">Whether to create a cap for each end</param>
/// <param name="matrix">Matrix to transform each increment of y level from previous y level</param>
/// <returns></returns>
static public VertexPositionNormalTexture[] CreateCylindroid
(
XYToZDelegate pixelFunc,
int numHorizVertices = 32,
int numVertVertices = 2,
double topDiameter = 1,
bool facetedNormals = false,
bool createBody = true,
bool createEndCaps = true,
Matrix?matrix = null
)
{
var heightMap = new double[numVertVertices, numHorizVertices];
Parallel.For(0, numHorizVertices, (x) =>
{
Parallel.For(0, numVertVertices, (y) =>
{
heightMap[y, x] = pixelFunc(x, y);
});
});
return(CreateCylindroid(numHorizVertices, numVertVertices, topDiameter, facetedNormals, heightMap, createBody, createEndCaps, matrix));
}
