public Texture GenerateTexture(Size size, DataArea area, Device gDevice, GDALReader dataSrc)
{
Texture texture = new Texture(gDevice, size.Width, size.Height, 0, Usage.None, Format.A8R8G8B8, Pool.Managed);
lock (this)
{
// find bands to use
int r, g, b;
dataSrc.Info.GetRGABands(out r, out g, out b);
Size nativeSz = dataSrc.Info.Resolution;
Band rBand = dataSrc.GetRasterBand(r + 1);
Band gBand = dataSrc.GetRasterBand(g + 1);
Band bBand = dataSrc.GetRasterBand(b + 1);
// Note: This *should* work
rData = new byte[nativeSz.Width * nativeSz.Height];
gData = new byte[nativeSz.Width * nativeSz.Height];
bData = new byte[nativeSz.Width * nativeSz.Height];
rBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, rData, nativeSz.Width, nativeSz.Height, 0, 0);
gBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, gData, nativeSz.Width, nativeSz.Height, 0, 0);
bBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, bData, nativeSz.Width, nativeSz.Height, 0, 0);
ftScaleTemp = new SizeF(1, 1);// (float)area.Area.Width / area.DataSize.Width, (float)area.Area.Height / area.DataSize.Height);
ftScaleTemp = new SizeF(ftScaleTemp.Width * area.Area.Width, ftScaleTemp.Height * area.Area.Height);
ftShiftTemp = new Size(area.Area.Location);
ftNativeSz = nativeSz;
if (area.Data is byte[])
TextureLoader.FillTexture(texture, FillTextureByte);
/*else if (area.Data is float[])
TextureLoader.FillTexture(texture, FillTextureFloat);*/
}
return texture;
}
public static Bitmap SampleRGBDiffuseMap(GDALReader dataSrc, Size size)
{
// find bands to use
int r, g, b;
dataSrc.Info.GetRGABands(out r, out g, out b);
Size nativeSz = dataSrc.Info.Resolution;
Band rBand = dataSrc.GetRasterBand(r + 1);
Band gBand = dataSrc.GetRasterBand(g + 1);
Band bBand = dataSrc.GetRasterBand(b + 1);
// Note: This *should* work
byte[] rData = new byte[size.Width * size.Height];
byte[] gData = new byte[size.Width * size.Height];
byte[] bData = new byte[size.Width * size.Height];
rBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, rData, size.Width, size.Height, 0, 0);
gBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, gData, size.Width, size.Height, 0, 0);
bBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, bData, size.Width, size.Height, 0, 0);
// combine channel samples into image
Bitmap bitmap = new Bitmap(size.Width, size.Height, PixelFormat.Format24bppRgb);
BitmapData data = bitmap.LockBits(new Rectangle(new Point(), size), ImageLockMode.WriteOnly, PixelFormat.Format24bppRgb);
unsafe
{
// write data to each pixel
Bitmap24bitRGBPixel* pixels = (Bitmap24bitRGBPixel*)data.Scan0;
for (int i = 0; i < rData.Length; i++)
{
pixels->R = bData[i];
pixels->G = gData[i];
pixels->B = rData[i];
pixels++;
}
}
bitmap.UnlockBits(data);
return bitmap;
}
public Texture GenerateTexture(Size size, DataArea area, Device gDevice, GDALReader dataSrc)
{
Texture texture = new Texture(gDevice, size.Width, size.Height, 0, Usage.None, Format.A8R8G8B8, Pool.Managed);
lock (this)
{
// find bands to use
int r, g, b;
dataSrc.Info.GetRGABands(out r, out g, out b);
Size nativeSz = dataSrc.Info.Resolution;
Band rBand = dataSrc.GetRasterBand(r + 1);
Band gBand = dataSrc.GetRasterBand(g + 1);
Band bBand = dataSrc.GetRasterBand(b + 1);
rData = new byte[nativeSz.Width * nativeSz.Height];
gData = new byte[nativeSz.Width * nativeSz.Height];
bData = new byte[nativeSz.Width * nativeSz.Height];
rBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, rData, nativeSz.Width, nativeSz.Height, 0, 0);
gBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, gData, nativeSz.Width, nativeSz.Height, 0, 0);
bBand.ReadRaster(0, 0, nativeSz.Width, nativeSz.Height, bData, nativeSz.Width, nativeSz.Height, 0, 0);
/*ftScaleTemp = new SizeF(1, 1);// (float)area.Area.Width / area.DataSize.Width, (float)area.Area.Height / area.DataSize.Height);
ftScaleTemp = new SizeF(ftScaleTemp.Width * area.Area.Width, ftScaleTemp.Height * area.Area.Height);
ftShiftTemp = new Size(area.Area.Location);
ftNativeSz = nativeSz;*/
ftScaleTemp = new SizeF((float)area.Area.Width / size.Width, (float)area.Area.Height / size.Height);
ftShiftTemp = new Size(area.Area.Location);
if (area.Data is byte[])
{
// to heights
//TextureLoader.FillTexture(texture, FillTextureByteToHeights);
// generate normal acc
ftTexSz = size;
//texStream = texture.LockRectangle(0, LockFlags.None);
/*Texture normalTex = new Texture(gDevice, size.Width, size.Height, 0, Usage.None, Format.A8R8G8B8, Pool.Managed);
TextureLoader.FillTexture(normalTex, FillTextureByteToNormalAcc);*/
heights = new float[size.Width * size.Height];
int index = 0;
//SizeF nativeScale = new SizeF((float)nativeSz.Width / size.Width, (float)nativeSz.Height / size.Height);
for (int y = 0; y < size.Height; y++)
{
int yNative = (int)(ftShiftTemp.Height + (y * ftScaleTemp.Width));
for (int x = 0; x < size.Width; x++)
{
int xNative = (int)(ftShiftTemp.Width + (x * ftScaleTemp.Width));
int indexNative = (yNative * nativeSz.Width) + xNative;
float rValue = rData[indexNative] / 255f;
float gValue = gData[indexNative] / 255f;
float bValue = bData[indexNative] / 255f;
heights[index++] = (rValue + gValue + bValue) / 3f;
}
}
/*texture.UnlockRectangle(0);
texture.Dispose();*/
// calculate normals
Vector3[] normals;
GenerateMap(heights, size, out normals);
// write to texture
texStream = texture.LockRectangle(0, LockFlags.None);
foreach (Vector3 normal in normals)
{
texStream.WriteByte((byte)(((normal.Z / 2) + 0.5f) * 255));
texStream.WriteByte((byte)(((-normal.Y / 2) + 0.5f) * 255));
texStream.WriteByte((byte)(((normal.X / 2) + 0.5f) * 255));
texStream.WriteByte(255);
}
/*foreach (float height in heights)
{
texStream.WriteByte(0);
texStream.WriteByte((byte)(height * 255));
texStream.WriteByte(0);
texStream.WriteByte(255);
}*/
texture.UnlockRectangle(0);
}
return texture;
}
}
