public HeightmapRenderer(WorldRenderer In, HeightMap For)
{
_in = In;
_for = For;
_p2d = new Perlin2D(100);
_renchunks = new RenderChunk[NUM_RENDER_CHUNKS] [];
for (int i = 0; i < _renchunks.Length; ++i) {
_renchunks [i] = new RenderChunk[NUM_RENDER_CHUNKS];
}
}
public RenderChunk(HeightMap In, Perlin2D PColor, int CX, int CY, int Level)
{
_lod = Level;
_cx = CX;
_cy = CY;
List<Vertex> verts = new List<Vertex>();
List<Vertex> wverts = new List<Vertex>();
List<ushort> indicies = new List<ushort>();
List<ushort> windicies = new List<ushort>();
BuildGround(In, verts, indicies);
if (_water)
BuildWater(In, wverts, windicies);
uint[] tmp = new uint[2];
GL.GenBuffers(2, tmp);
_buffer = tmp [0];
_wbuffer = tmp [1];
//Vertex Data
GL.BindBuffer(BufferTarget.ArrayBuffer, _buffer);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(verts.Count * Vertex.Size), verts.ToArray(), BufferUsageHint.StaticDraw);
//Water vertex data
GL.BindBuffer(BufferTarget.ArrayBuffer, _wbuffer);
GL.BufferData(BufferTarget.ArrayBuffer, (IntPtr)(wverts.Count * Vertex.Size), wverts.ToArray(), BufferUsageHint.StaticDraw);
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
#region Texture generation
_tex = GLUtil.CreateTexture(GenGroundTexture(PColor));
if (_water)
_wtex = GLUtil.CreateTexture(GenWaterTexture(PColor));
#endregion
_indicies = indicies.ToArray();
if (_water)
_windicies = windicies.ToArray();
}
public IslandGenerator(Perlin2D Perlin)
{
_p2d = Perlin;
}
public HeightMap(string FName)
{
Perlin2D p2d = new Perlin2D(100);
this._cache = new ChunkCache(new IslandGenerator(p2d));
}
float Octaves(Perlin2D P, float X, float Y, int Num)
{
double total = 0;
for (int i = 0; i < Num; ++i) {
double freq = Math.Pow(2, i);
double ampl = Math.Pow(0.5, i);
double per = P [X * freq, Y * freq];
per = (per - 0.5) * 2;
total += per * ampl;
}
return (float)Math.Abs(total);
}
Bitmap GenWaterTexture(Perlin2D C)
{
return GenTexture(C, Color.Blue, Color.BlueViolet, 0.5f);
}
Bitmap GenTexture(Perlin2D C, Color C1, Color C2, float Scale)
{
Bitmap bm = new Bitmap(_lod * 2, _lod * 2);
for (int x = 0; x < bm.Width; ++x) {
int xp = _cx * CHUNK_SIZE + x;
for (int y = 0; y < bm.Height; ++y) {
int yp = _cy * CHUNK_SIZE + y;
float f = Octaves(C, xp * Scale, yp * Scale, 4);
if (f > 1)
f = 1;
Color c = Mix(C1, C2, f);
bm.SetPixel(x, y, c);
}
}
return bm;
}
Bitmap GenGroundTexture(Perlin2D C)
{
return GenTexture(C, Color.Green, Color.Yellow, 0.1f);
}
