public void ApplyBrush(IBrushShape brushshape, int brushsize, double brushcentrex, double brushcentrey, bool israising, double milliseconds)
{
if (thistexture != null && maptexturestage != null)
{
double timemultiplier = milliseconds * speed;
double directionmultiplier = 1.0;
if (!israising)
{
directionmultiplier = -1.0;
}
int mapx = (int)(brushcentrex / Terrain.SquareSize);
int mapy = (int)(brushcentrey / Terrain.SquareSize);
int mapwidth = Terrain.GetInstance().HeightMapWidth - 1;
int mapheight = Terrain.GetInstance().HeightMapHeight - 1;
int texturex = (int)(texturewidth * mapx / mapwidth);
int texturey = (int)(textureheight * mapy / mapheight);
int texturebrushwidth = (int)(texturewidth * brushsize / mapwidth);
int texturebrushheight = (int)(textureheight * brushsize / mapheight);
for (int i = -texturebrushwidth; i <= texturebrushwidth; i++)
{
for (int j = -texturebrushheight; j <= texturebrushheight; j++)
{
double brushshapecontribution = brushshape.GetStrength((double)i / texturebrushwidth,
(double)j / texturebrushheight);
if (brushshapecontribution > 0)
{
int thisx = texturex + i;
int thisy = texturey + j;
// Console.WriteLine(thisx + " " + thisy);
if (thisx >= 0 && thisy >= 0 && thisx < texturewidth &&
thisy < textureheight)
{
// we update our double array then set the int array iwthin ITexture itself
alphadata[thisx, thisy] += speed * directionmultiplier * timemultiplier * brushshapecontribution;
if (alphadata[thisx, thisy] >= 255)
{
alphadata[thisx, thisy] = 255;
}
else if (alphadata[thisx, thisy] < 0)
{
alphadata[thisx, thisy] = 0;
}
thistexture.AlphaData[thisx, thisy] = (byte)alphadata[thisx, thisy];
// Console.WriteLine(thisx + " " + thisy + " " + (byte)alphadata[thisx, thisy]);
}
}
}
}
thistexture.ReloadAlpha();
thistexture.Modified = true;
Terrain.GetInstance().OnBlendMapInPlaceEdited(maptexturestage, mapx - brushsize, mapy - brushsize, mapx + brushsize, mapy + brushsize);
}
}