(2) [25 points] A single point light source is located at (16, 16, 11) and a plane is defined by r + z - 3 - 0. Assume the illumination model is 1-2 + 20(4 cos +9cos' normal and the light direction and is the angle between the reflected light direction and the viewing direction. ), where is the angle between the plane Compute the light intensity at point P- (0,0, 3) lying on the plane when the viewing direction is [0,-1, 1] (2) [25 points] A single point light source is located at (16, 16, 11) and a plane is defined by r + z - 3 - 0. Assume the illumination model is 1-2 + 20(4 cos +9cos' normal and the light direction and is the angle between the reflected light direction and the viewing direction. ), where is the angle between the plane Compute the light intensity at point P- (0,0, 3) lying on the plane when the viewing direction is [0,-1, 1]