def __init__(self,pos,s_or_i = 1.0):
"""
Create a 3d source point
param pos, Position, the three-D Posistion
param spectrum the attched spectrum
"""
Vector3d.__init__(self,pos)
self.spectrum = None # Add null to allow for testing
if isinstance(s_or_i,Spectrum): # Add spectrum if given
self.spectrum = s_or_i
else:
self.intensity = float(s_or_i) # else record intensity as a float
def __init__(self,pos = Vector3d(), intensity = 1.0, a = 1.0, b = None, alpha = 0.0):
"""
Form Psf with parameters
param pos the position in 3d
param a radius or major axis
param b (default None),
param alpha angle of ellipse
"""
Vector3d.__init__(self,pos)
self.intensity = 1.0
self.major = a
if b == None:
self.minor = self.major
else:
self.minor = b
self.alpha = alpha
