def _set_vertices( self ):
self.vertices = (
vector_3d( -1,-1,1 ),
vector_3d( 1,-1,-1 ),
vector_3d( 1,1,1 ),
vector_3d( -1,1,-1 )
)
def _sphere_to_cart( theta, phi, numeric = True ):
ret_val = vector_3d( \
s.sin( theta ) * s.cos( phi ), \
s.cos( theta ), \
s.sin( theta ) * s.sin( phi ) )
if numeric:
ret_val = ret_val.evalf()
return ret_val
def _sphere_to_cart( theta, phi ):
return vector_3d( \
s.sin( theta ) * s.cos( phi ), \
s.cos( theta ), \
s.sin( theta ) * s.sin( phi ) )
def _set_vertices( self ):
half = Rational(1,2)
half_phi = (GoldenRatio / 2)
self.vertices = (
vector_3d( -half, half_phi, 0 ),
vector_3d( half, half_phi, 0 ),
vector_3d( 0, half, -half_phi ),
vector_3d( -half_phi, 0, -half ),
vector_3d( -half_phi, 0, half ),
vector_3d( 0, half, half_phi ),
vector_3d( half_phi, 0, -half ),
vector_3d( 0, -half, -half_phi ),
vector_3d( -half, -half_phi, 0 ),
vector_3d( 0, -half, half_phi ),
vector_3d( half_phi, 0, half ),
vector_3d( half, -half_phi, 0 )
)
