def getInitCameraUp(self):
#va = self.getFocalPoint() - self.getInitPosition()
va = self.getInitPosition() - self.getFocalPoint() # w
vb = self.getZAxis() # up
w = Utils.normalize(va) # w
u = Utils.normalize(numpy.cross(vb, w))
v = numpy.cross(w, u)
return v
def randPickDirection(self):
x = random.random()
y = random.random()
z = random.random()
v = numpy.array([x, y, z], dtype=numpy.float32)
v = Utils.normalize(v)
return v
def isOccluded(self, pt1, pt2):
"""To check if there is a object between pt1 and pt2
Methods: isOccluded(pt1, pt2) -> isOccluded?
"""
vd = pt2 - pt1
tMax = Utils.norm2(vd)
vd = Utils.normalize(vd)
isIntersect, t = self.__intersect(pt1, vd, 0, tMax)
return isIntersect
