func drawSelection(p1, p2 Point) {
min, max := minMaxPoints(p1, p2)
gl.Color3ub(255, 0, 0)
gl.Begin(gl.LINES)
gl.Vertex2i(min.X, min.Y)
gl.Vertex2i(max.X, min.Y)
gl.Vertex2i(min.X, min.Y)
gl.Vertex2i(min.X, max.Y)
gl.Vertex2i(max.X, max.Y)
gl.Vertex2i(max.X, min.Y)
gl.Vertex2i(max.X, max.Y)
gl.Vertex2i(min.X, max.Y)
gl.End()
gl.Color3ub(255, 255, 255)
}
func (self *Tile) Draw() {
switch self.CurrentLOD {
case -1:
// TODO: draw single color
r, i := self.What.Center()
c := complex(r, i)
color := mandelbrotAt(c)
gl.BindTexture(gl.TEXTURE_2D, 0)
gl.Color3ub(color.R, color.G, color.B)
drawQuad(self.X, self.Y, self.W, self.H, 0, 0, 1, 1)
gl.Color3ub(255, 255, 255)
case 0:
gl.BindTexture(gl.TEXTURE_2D, self.Texture[0])
drawQuad(self.X, self.Y, self.W, self.H, 0, 0, 1, 1)
case 1:
gl.BindTexture(gl.TEXTURE_2D, self.Texture[1])
drawQuad(self.X, self.Y, self.W, self.H, 0, 0, 1, 1)
default:
panic("unreachable")
}
}