The HeightmapToNormalMap method converts a heightmap represented by the current Bitmap instance into a normal map. This is useful for generating normal maps from grayscale images, where the intensity of the grayscale represents height information.
To use the HeightmapToNormalMap method, call it on an instance of Bitmap that contains a heightmap image. The method requires a strength parameter, which determines the intensity of the normal map effect. A higher strength value will result in more pronounced normals.
// Create a Bitmap instance from a heightmap image
Bitmap heightmap = new Bitmap("path/to/heightmap.png");
// Convert the heightmap to a normal map with a specified strength
float strength = 1.0f;
Bitmap normalMap = heightmap.HeightmapToNormalMap(strength);
// Use the normal map for further processing or rendering
// For example, save it to a file
normalMap.ToPng("path/to/normalmap.png");