private static unsafe void ColourFace( PlanetMapFace face, byte* pixel )
{
switch ( face )
{
case PlanetMapFace.NegX: pixel[ 0 ] = 0xff; pixel[ 1 ] = 0x80; pixel[ 2 ] = 0x80; break;
case PlanetMapFace.PosX: pixel[ 0 ] = 0xff; pixel[ 1 ] = 0x00; pixel[ 2 ] = 0x00; break;
case PlanetMapFace.NegY: pixel[ 0 ] = 0x80; pixel[ 1 ] = 0xff; pixel[ 2 ] = 0x80; break;
case PlanetMapFace.PosY: pixel[ 0 ] = 0x00; pixel[ 1 ] = 0xff; pixel[ 2 ] = 0x00; break;
case PlanetMapFace.NegZ: pixel[ 0 ] = 0x80; pixel[ 1 ] = 0x80; pixel[ 2 ] = 0xff; break;
case PlanetMapFace.PosZ: pixel[ 0 ] = 0x00; pixel[ 1 ] = 0x00; pixel[ 2 ] = 0xff; break;
}
}
public unsafe void GenerateSide( PlanetMapFace face, byte* pixels, int width, int height, int stride )
{
for ( int row = 0; row < height; ++row )
{
byte* curPixel = pixels + row * stride;
for ( int col = 0; col < width; ++col )
{
ColourFace( face, curPixel );
curPixel += 3;
}
}
using ( Bitmap bmp = new Bitmap( width, height, stride, PixelFormat.Format24bppRgb, ( IntPtr )pixels ) )
{
using ( Graphics g = Graphics.FromImage( bmp ) )
{
g.DrawString( face.ToString( ), new Font( "Arial", 8 ), Brushes.White, width / 2, height / 2 );
}
}
}
public unsafe void GenerateSide( PlanetMapFace face, byte* pixels, int width, int height, int stride )
{
float incU = 2.0f / width;
float incV = 2.0f / height;
float v = -1;
for ( int row = 0; row < height; ++row, v += incV )
{
float u = -1;
byte* curPixel = pixels + row * stride;
for ( int col = 0; col < width; ++col, u += incU )
{
float s, t;
PlanetMap.UvToSt( u, v, face, out s, out t );
curPixel[ 0 ] = ( byte )( Math.Abs( s ) * ( 255.0f / Constants.Pi ) );
curPixel[ 1 ] = ( byte )( t * ( 255.0f / Constants.Pi ) );
curPixel[ 2 ] = 0;
curPixel += 3;
}
}
}
private static unsafe Bitmap GeneratePlanetTextureFace( IPlanetTerrainGenerator gen, PlanetMapFace face, int res )
{
PixelFormat format = gen.CubeMapFormat;
Bitmap bmp = new Bitmap( res, res, format );
BitmapData bmpData = bmp.LockBits( new Rectangle( 0, 0, res, res ), ImageLockMode.WriteOnly, format );
gen.GenerateSide( face, ( byte* )bmpData.Scan0, res, res, bmpData.Stride );
bmp.UnlockBits( bmpData );
return bmp;
}
public unsafe void GenerateSide( PlanetMapFace face, byte* pixels, int width, int height, int stride )
{
float incU = 2.0f / ( width - 1 );
float incV = 2.0f / ( height - 1 );
float v = -1;
float res = 2.0f;
for ( int row = 0; row < height; ++row, v += incV )
{
float u = -1;
byte* curPixel = pixels + row * stride;
for ( int col = 0; col < width; ++col, u += incU )
{
float x, y, z;
PlanetMap.UvToXyz( u, v, face, out x, out y, out z );
float invLength = res / Functions.Sqrt( u * u + v * v + 1 );
x *= invLength;
y *= invLength;
z *= invLength;
int latitude = ( int )( ( LatitudeCount / 2 ) * ( y / res ) ) + 2;
float fVal = TerrainHeight( x, y, z );
int val = ( int )( fVal * 255.0f );
Color colour = TerrainColourMap[ latitude, val ];
curPixel[ 0 ] = colour.R;
curPixel[ 1 ] = colour.G;
curPixel[ 2 ] = colour.B;
curPixel += 3;
}
}
//using ( Bitmap bmp = new Bitmap( width, height, stride, PixelFormat.Format24bppRgb, ( IntPtr )pixels ) )
//{
// using ( Graphics g = Graphics.FromImage( bmp ) )
// {
// g.DrawString( face.ToString( ), new Font( "Arial", 8 ), Brushes.White, 0, 0 );
// }
//}
}
