fCraft.MapGeneratorOld.GenerateHeightmap C# (CSharp) Method

        private void GenerateHeightmap()
        {
            ReportProgress( 10, "Heightmap: Priming" );
            heightmap = new float[args.MapWidth, args.MapLength];

            noise.PerlinNoise( heightmap, args.FeatureScale, args.DetailScale, args.Roughness, 0, 0 );

            if ( args.UseBias && !args.DelayBias ) {
                ReportProgress( 2, "Heightmap: Biasing" );
                Noise.Normalize( heightmap );
                ApplyBias();
            }

            Noise.Normalize( heightmap );

            if ( args.LayeredHeightmap ) {
                ReportProgress( 10, "Heightmap: Layering" );

                // needs a new Noise object to randomize second map
                float[,] heightmap2 = new float[args.MapWidth, args.MapLength];
                new Noise( rand.Next(), NoiseInterpolationMode.Bicubic ).PerlinNoise( heightmap2, 0, args.DetailScale, args.Roughness, 0, 0 );
                Noise.Normalize( heightmap2 );

                // make a blendmap
                blendmap = new float[args.MapWidth, args.MapLength];
                int blendmapDetailSize = ( int )Math.Log( Math.Max( args.MapWidth, args.MapLength ), 2 ) - 2;
                new Noise( rand.Next(), NoiseInterpolationMode.Cosine ).PerlinNoise( blendmap, 3, blendmapDetailSize, 0.5f, 0, 0 );
                Noise.Normalize( blendmap );
                float cliffSteepness = Math.Max( args.MapWidth, args.MapLength ) / 6f;
                Noise.ScaleAndClip( blendmap, cliffSteepness );

                Noise.Blend( heightmap, heightmap2, blendmap );
            }

            if ( args.MarbledHeightmap ) {
                ReportProgress( 1, "Heightmap: Marbling" );
                Noise.Marble( heightmap );
            }

            if ( args.InvertHeightmap ) {
                ReportProgress( 1, "Heightmap: Inverting" );
                Noise.Invert( heightmap );
            }

            if ( args.UseBias && args.DelayBias ) {
                ReportProgress( 2, "Heightmap: Biasing" );
                Noise.Normalize( heightmap );
                ApplyBias();
            }
            Noise.Normalize( heightmap );
        }