// determines if this stage affects the map coordinates specified
// returns true always, except for Blend
public bool Affects(int mapx, int mapy, int mapwidth, int mapheight)
{
//Console.WriteLine("Affects");
if (Operation == OperationType.Nop)
{
// Console.WriteLine("return false: Nop");
return(false);
}
if (Operation != OperationType.Blend)
{
//Console.WriteLine("return true: !Blend");
return(true);
}
int texturex = (blendtexture.Width * mapx) / mapwidth;
int texturey = (blendtexture.Height * mapy) / mapheight;
//int texturex = ( blendtexture.AlphaData.GetUpperBound(0) * mapx ) / mapwidth;
//int texturey = (blendtexture.AlphaData.GetUpperBound(1) * mapy) / mapheight;
try
{
if (blendtexture.GetRed(texturex, texturey) > 0)
//if (blendtexture.AlphaData[texturex, texturey] > 0)
{
return(true);
}
}
catch (Exception)
{
throw new Exception("texturex: " + texturex + " " + texturey + " mapx " + mapx + " mapy " + mapy + " mapwidth " + mapwidth + " " + mapheight);
}
return(false);
}
// reads R channel as alpha channel
void LoadImageToOpenGlAsAlpha(ImageWrapper image)
{
width = image.Width;
height = image.Height;
LogFile.WriteLine("loading texture " + filename + " width: " + width + " height: " + height);
alphadata = new byte[width, height];
byte[] dataforgl = new byte[width * height];
for (int x = 0; x < width; x++)
{
for (int y = 0; y < height; y++)
{
int gloffset = y * width + x;
alphadata[x, y] = image.GetRed(x, y);
dataforgl[gloffset] = image.GetRed(x, y);
}
}
Gl.glBindTexture(Gl.GL_TEXTURE_2D, GlReference);
Gl.glTexImage2D(Gl.GL_TEXTURE_2D, 0, Gl.GL_ALPHA8, width, height, 0, Gl.GL_ALPHA, Gl.GL_UNSIGNED_BYTE, dataforgl);
Gl.glTexParameteri(Gl.GL_TEXTURE_2D, Gl.GL_TEXTURE_MIN_FILTER, Gl.GL_NEAREST);
}
void LoadTextureData(MapTextureStageModel maptexturestage)
{
LogFile.WriteLine("PaintTexture.LoadTextureData( " + maptexturestage);
thistexture = maptexturestage.blendtexture;
if (thistexture != null)
{
texturewidth = thistexture.Width;
textureheight = thistexture.Height;
LogFile.WriteLine("edittexture width " + texturewidth + " height " + textureheight);
alphadata = new double[texturewidth, textureheight];
for (int x = 0; x < texturewidth; x++)
{
for (int y = 0; y < textureheight; y++)
{
alphadata[x, y] = thistexture.GetRed(x, y);
}
}
}
}
void LoadTextureData( MapTextureStageModel maptexturestage )
{
LogFile.WriteLine( "PaintTexture.LoadTextureData( " + maptexturestage );
thistexture = maptexturestage.blendtexture;
if (thistexture != null)
{
texturewidth = thistexture.Width;
textureheight = thistexture.Height;
LogFile.WriteLine( "edittexture width " + texturewidth + " height " + textureheight );
alphadata = new double[texturewidth, textureheight];
for (int x = 0; x < texturewidth; x++)
{
for (int y = 0; y < textureheight; y++)
{
alphadata[x, y] = thistexture.GetRed( x, y );
}
}
}
}