def isect(bbox, shader, linear):
#origin = Vector3(0.0, 0.0, 0.0)
origin = random_in_bbox(bbox)
direction = random_in_bbox(bbox)
direction.normalize()
ray = Ray(origin, direction)
hit = HitPoint()
props = {'hit': hit, 'ret': 5, 'ray': ray}
shader.props = props
shader.update()
shader.execute()
h = linear.isect(ray)
compare(h, shader, ray)
if h is False:
return 0
return 1
def visible(bbox, shader, linear):
p1 = random_in_bbox(bbox)
p2 = random_in_bbox(bbox)
props = {'p1': p1, 'ret': 5, 'p2': p2}
shader.props = props
shader.update()
shader.execute()
h = linear.visibility(p1, p2)
ret = shader.shader.get_value('ret')
if h is True and ret != 1:
print (p1)
print (p2)
raise ValueError("Something is wrong")
if h is False and ret != 0:
print (p1)
print (p2)
raise ValueError("Something is wrong")
def generate_ray(bbox):
dir = random_in_bbox(bbox)
dir.normalize()
origin = Vector3(0.0, 0.0, 0.0)
return Ray(origin, dir)