def getSurfaceNormal(self, point):
surfaceNormal = Vector()
if self.center.x - self.radius <= point.x <= self.center.x + self.radius and self.center.z - self.radius <= point.z <= self.center.z + self.radius:
epsilon = 0.00001
if point.y > self.top.y - epsilon:
return Vector(0.0, 1.0, 0.0)
elif self.bottom.y - epsilon < point.y < self.bottom.y + epsilon:
return Vector(0.0, -1.0, 0.0)
v = Vector(self.center.x, point.y, self.center.z)
surfaceNormal = point.sub(v)
return surfaceNormal.normalize()
def getSurfaceNormal(self,point):
surfaceNormal = Vector()
epsilon = 0.00001
if point.y > self.center.y - epsilon:
surfaceNormal.y = 1
return Vector(0.0, 1.0, 0.0)
elif self.bottom.y - epsilon < point.y < self.bottom.y + epsilon:
surfaceNormal.y = -1
return Vector(0.0, -1.0, 0.0)
x = point.x - self.center.x
z = point.z - self.center.z
r = math.sqrt(math.pow(x, 2) + math.pow(z, 2))
surfaceNormal = Vector(x, r * (self.radius / self.height), z)
return surfaceNormal.normalize()