/// <summary>
/// Gets a rectangle containing the minimap with the non-minimap corners set to false
/// </summary>
/// <param name="filter">the filter to use on the minimap</param>
/// <param name="offset">gets set to the offset from the game screen to the minimap piece</param>
/// <returns>true for the pixels on the minimap that match the filter</returns>
public bool[,] MinimapFilter(ColorFilter filter, out Point offset)
{
if (Screen.Width < 1) //the screen has not been read yet
{
offset = new Point(0, 0);
return(null);
}
int left = ScreenWidth - OFFSET_LEFT;
int right = left + WIDTH - 1;
int top = OFFSET_TOP;
int bottom = top + HEIGHT - 1;
Point center = new Point((left + right) / 2, (top + bottom) / 2);
double radius = CLICK_RADIUS;
double distance;
offset = new Point(left, top);
bool[,] minimapFilter = new bool[right - left + 1, bottom - top + 1];
for (int x = left; x <= right; x++)
{
for (int y = top; y <= bottom; y++)
{
distance = Math.Sqrt(Math.Pow(x - center.X, 2) + Math.Pow(y - center.Y, 2));
if (distance <= radius)
{
minimapFilter[x - left, y - top] = filter.ColorInRange(Screen[x, y]);
}
}
}
return(minimapFilter);
}
/// <summary>
/// Filters a portion of the rgbImage into a binary image
/// </summary>
/// <param name="rgbImage">unfiltered image</param>
/// <param name="filter">color range to use for filtering</param>
/// <param name="filterPixels">filtered binary image</param>
/// <param name="xMin">inclusive</param>
/// <param name="xMax">exclusive</param>
private static void ColorFilterPiece(Color[,] rgbImage, ColorFilter filter, ref bool[,] filterPixels, int xMin, int xMax)
{
Color pixelColor;
int height = rgbImage.GetLength(1);
for (int x = xMin; x < xMax; x++)
{
for (int y = 0; y < height; y++)
{
pixelColor = rgbImage[x, y];
filterPixels[x, y] = filter.ColorInRange(pixelColor);
}
}
}
