/// <summary>
/// Generates a terrain mesh from an input heightfield texture.
/// </summary>
public override TerrainModelContent Process(Texture2DContent input,
ContentProcessorContext context)
{
Texture2DContent texture = context.Convert <Texture2DContent, Texture2DContent>(input, "FloatingPointTextureProcessor");
PixelBitmapContent <float> heightfield = (PixelBitmapContent <float>)texture.Mipmaps[0];
float[,] heights = new float[heightfield.Width, heightfield.Height];
for (int y = 0; y < heightfield.Height; y++)
{
for (int x = 0; x < heightfield.Width; x++)
{
heights[x, y] = heightfield.GetPixel(x, y);
}
}
HeightMapContent heightMap = new HeightMapContent(heightfield.Width, heightfield.Height, heights, VerticalScale, HorizontalScale);
string directory = Path.GetDirectoryName(input.Identity.SourceFilename);
string texture1 = Path.Combine(directory, ColorTexture);
string texture2 = Path.Combine(directory, DetailTexture);
// Create a material, and point it at our terrain texture.
DualTextureMaterialContent material = new DualTextureMaterialContent
{
Texture = context.BuildAsset <TextureContent, TextureContent>(new ExternalReference <TextureContent>(texture1), null),
Texture2 = context.BuildAsset <TextureContent, TextureContent>(new ExternalReference <TextureContent>(texture2), null),
};
TerrainModelContentBuilder terrainModelContentBuilder = new TerrainModelContentBuilder(PatchSize, Tau, heightMap, material, DetailTextureTiling, HorizontalScale);
return(terrainModelContentBuilder.Build(context));
}
public TerrainModelContentBuilder(int patchSize, float tau, HeightMapContent heightMap, DualTextureMaterialContent material, int detailTextureTiling, int horizontalScale)
{
_patchSize = patchSize;
_tau = tau;
_heightMap = heightMap;
_material = material;
_detailTextureTiling = detailTextureTiling;
_horizontalScale = horizontalScale;
}
protected override MaterialContent ConvertMaterial(MaterialContent material, ContentProcessorContext context)
{
DualTextureMaterialContent dual = new DualTextureMaterialContent();
// Copy the base (diffuse) texture from the existing BasicEffect material.
dual.Texture = ((BasicMaterialContent)material).Texture;
// Add the second lightmap texture.
dual.Texture2 = new ExternalReference <TextureContent>("lightmap.tga");
return(base.ConvertMaterial(dual, context));
}
