public static void putPixel(int x, int y, OpenGL gl, Custom_Color color)
{
byte[] ptr = new byte[3];
ptr[0] = color.R;
ptr[1] = color.G;
ptr[2] = color.B;
gl.RasterPos(x, y);
gl.DrawPixels(1, 1, OpenGL.GL_RGB, ptr);
gl.Flush();
}
public static void BoundaryFill(OpenGL gl, int x, int y, Custom_Color fill_color, Custom_Color boundary_color)
{
// get color value at coordinate (x,y)
Custom_Color currentColor = utils.Custom_Color.GetPixels(gl, x, y);
if (!utils.Custom_Color.IsSameColor(currentColor, boundary_color) && !utils.Custom_Color.IsSameColor(currentColor, fill_color))
{
utils.Custom_Color.putPixel(x, y, gl, fill_color);
BoundaryFill(gl, x - 1, y, fill_color, boundary_color);
BoundaryFill(gl, x, y + 1, fill_color, boundary_color);
BoundaryFill(gl, x + 1, y, fill_color, boundary_color);
BoundaryFill(gl, x, y - 1, fill_color, boundary_color);
}
}
public static Custom_Color GetPixels(OpenGL gl, int x, int y)
{
byte[] ptr = new byte[3];
//int actual_y = gl.RenderContextProvider.Height - y;
gl.ReadPixels(x, y, 1, 1, OpenGL.GL_RGB, OpenGL.GL_BYTE, ptr);
byte Red = ptr[0];
byte Green = ptr[1];
byte Blue = ptr[2];
// assign this value to currentColor variable
Custom_Color currentColor = new Custom_Color(Red, Green, Blue);
return(currentColor);
}
public static bool IsSameColor(Custom_Color currentColor, Custom_Color other)
{
bool Flag = false;
if (currentColor.R != other.R)
{
return(Flag);
}
if (currentColor.G != other.G)
{
return(Flag);
}
if (currentColor.B != other.B)
{
return(Flag);
}
Flag = true;
return(Flag);
}
