def getIllumination(self, surfNormV: np.ndarray, pos: np.ndarray,
cameraPos: np.ndarray, shinyness: float):
#diffuse
lightDir = Ray.normalizeVector(
self.getClosestPointOfLight(Ray(pos, surfNormV)) - pos)
diffuse = self._phong.diffuse * np.dot(lightDir, surfNormV)
#specular
vectorFromCam = pos - cameraPos
reflectedVector = vectorFromCam - 2 * (
np.dot(vectorFromCam, surfNormV) * surfNormV)
lightDir = Ray.normalizeVector(
self.getClosestPointOfLight(Ray(pos, reflectedVector)) - pos)
cameraDir = Ray.normalizeVector(cameraPos - pos)
optReflAxis = Ray.normalizeVector(lightDir + cameraDir)
specular = self._phong.specular * np.dot(surfNormV,
optReflAxis)**shinyness
return (diffuse, specular)
def norm(self):
"""Normal vector of surface
"""
return Ray.normalizeVector(np.cross(self.dirVec1, self.dirVec2))
