def drawCircle3d(center3d, axis3d, radius, color, npoints=32):
axis3d.normalize()
d1 = Vector.cross(axis3d, Vector([0, 0, 1])).direction()
d2 = Vector.cross(axis3d, d1)
glColor(*color)
glBegin(GL_TRIANGLE_FAN)
glVertex(*center3d._e)
for i in xrange(npoints + 1):
th = (i / float(npoints)) * 2 * math.pi
p = center3d + (d1 * math.sin(th) + d2 * math.cos(th)) * radius
glVertex(*p._e)
glEnd()
def test_cross(self): v1,v2 = self.new_vector_and_copy() try: v3 = Vector.cross(v1,v2) failed = False except: failed = True self.assertEqual(failed, True)
def vectorVectorCrossProduct(self, v1, v2):
return Vector.cross(v1, v2)
def rotationVectorCrossProduct(self, rotation, vec):
return Vector.cross(rotation, vec)
def vectorVectorCrossProduct(self, v1, v2):
return Vector.cross(Space2D.vecTo3D(v1), Space2D.vecTo3D(v2)).z