static void ConvertHeightData(string bmpPath)
{
byte[] col;
int w, h;
using(var bmp = Bitmap.FromFile(bmpPath) as Bitmap) {
w = bmp.Width;
h = bmp.Height;
col = new byte[w * h * 4];
// Convert Bitmap
System.Drawing.Imaging.BitmapData bd = bmp.LockBits(new System.Drawing.Rectangle(0, 0, w, h), System.Drawing.Imaging.ImageLockMode.ReadOnly, bmp.PixelFormat);
System.Runtime.InteropServices.Marshal.Copy(bd.Scan0, col, 0, bd.Stride * bd.Height);
bmp.UnlockBits(bd);
}
// Make Pixels As Floating Point Values
int i = 0, ci = 0;
float[] hd = new float[w * h];
for(int y = 0; y < h; y++) {
for(int x = 0; x < w; x++) {
hd[i++] = 1f - (col[ci + 2] / 255f);
ci += 4;
}
}
HeightTile[] tiles = new HeightTile[(w - 1) * (h - 1)];
int ti = 0;
for(int y = 0; y < h - 1; y++) {
for(int x = 0; x < w - 1; x++) {
i = y * w + x;
tiles[ti].XNZN = hd[i];
i++;
tiles[ti].XPZN = hd[i];
i += w;
tiles[ti].XPZP = hd[i];
i--;
tiles[ti].XNZP = hd[i];
ti++;
}
}
ci = 0;
byte[] convData = new byte[8 + tiles.Length * 16];
BitConverter.GetBytes(w - 1).CopyTo(convData, ci); ci += 4;
BitConverter.GetBytes(h - 1).CopyTo(convData, ci); ci += 4;
for(i = 0; i < tiles.Length; i++) {
BitConverter.GetBytes(tiles[i].XNZN).CopyTo(convData, ci); ci += 4;
BitConverter.GetBytes(tiles[i].XPZP).CopyTo(convData, ci); ci += 4;
BitConverter.GetBytes(tiles[i].XNZP).CopyTo(convData, ci); ci += 4;
BitConverter.GetBytes(tiles[i].XPZP).CopyTo(convData, ci); ci += 4;
}
using(var s = File.Create(bmpPath + ".conv")) {
var bw = new BinaryWriter(s);
bw.Write(convData.Length);
bw.Flush();
var gs = new GZipStream(s, CompressionMode.Compress);
gs.Write(convData, 0, convData.Length);
gs.Flush();
}
}
static void ConvertHeightData(string bmpPath)
{
byte[] col;
int w, h;
using (var bmp = Bitmap.FromFile(bmpPath) as Bitmap) {
w = bmp.Width;
h = bmp.Height;
col = new byte[w * h * 4];
// Convert Bitmap
System.Drawing.Imaging.BitmapData bd = bmp.LockBits(new System.Drawing.Rectangle(0, 0, w, h), System.Drawing.Imaging.ImageLockMode.ReadOnly, bmp.PixelFormat);
System.Runtime.InteropServices.Marshal.Copy(bd.Scan0, col, 0, bd.Stride * bd.Height);
bmp.UnlockBits(bd);
}
// Make Pixels As Floating Point Values
int i = 0, ci = 0;
float[] hd = new float[w * h];
for (int y = 0; y < h; y++)
{
for (int x = 0; x < w; x++)
{
hd[i++] = 1f - (col[ci + 2] / 255f);
ci += 4;
}
}
HeightTile[] tiles = new HeightTile[(w - 1) * (h - 1)];
int ti = 0;
for (int y = 0; y < h - 1; y++)
{
for (int x = 0; x < w - 1; x++)
{
i = y * w + x;
tiles[ti].XNZN = hd[i];
i++;
tiles[ti].XPZN = hd[i];
i += w;
tiles[ti].XPZP = hd[i];
i--;
tiles[ti].XNZP = hd[i];
ti++;
}
}
ci = 0;
byte[] convData = new byte[8 + tiles.Length * 16];
BitConverter.GetBytes(w - 1).CopyTo(convData, ci); ci += 4;
BitConverter.GetBytes(h - 1).CopyTo(convData, ci); ci += 4;
for (i = 0; i < tiles.Length; i++)
{
BitConverter.GetBytes(tiles[i].XNZN).CopyTo(convData, ci); ci += 4;
BitConverter.GetBytes(tiles[i].XPZP).CopyTo(convData, ci); ci += 4;
BitConverter.GetBytes(tiles[i].XNZP).CopyTo(convData, ci); ci += 4;
BitConverter.GetBytes(tiles[i].XPZP).CopyTo(convData, ci); ci += 4;
}
using (var s = File.Create(bmpPath + ".conv")) {
var bw = new BinaryWriter(s);
bw.Write(convData.Length);
bw.Flush();
var gs = new GZipStream(s, CompressionMode.Compress);
gs.Write(convData, 0, convData.Length);
gs.Flush();
}
}
