def OldStarMesh(temp=Te_Sun, rad=1, scale=(1, 1, 1), pos=[0, 0, 0]):
"""
This function creates a pythreejs object that represents a star using
a texture based on public domain STEREO Heliographic map made with
images taken of the Sun on Dec. 30, 2011. Image downloaded from
https://stereo.gsfc.nasa.gov/360blog/
and had its brightness and resolution rescaled.
Parameters
----------
temp : float
temperature of star in Kelvin (default 5777)
rad : float
radius of the star in system units (default 1)
scale : tuple
pythreejs scale in each dimension as tuple (default (1, 1, 1) )
pos : list
three-dimensional position as list (default [0, 0, 0] )
Returns
-------
star : pythreejs.Mesh
a spherical pythreejs Mesh object representing a star
"""
# Check is position is a list
if isinstance(pos, list):
# Check if this is a list of 3 items
if (len(pos) != 3):
raise TypeError('pos passed to StarMesh must be list of 3 numbers')
# Check that all the items in the list are numbers
for this_pos in pos:
try:
i = float(this_pos)
except ValueError:
raise TypeError('ValueError: pos contains list item that is not a number.')
else:
raise TypeError('pos passed to StarMesh must be list of 3 numbers')
# Check is scale is a tuple
if isinstance(scale, tuple):
if (len(scale) != 3):
raise TypeError('scale passed to StarMesh must be tuple of 3 numbers')
else:
raise TypeError('scale must be a tuple')
# Define color and texture of star surface
hexcolor = tc.rgb2hex(tc.temp2rgb(float(temp)))[0]
StarTexture = p3j.ImageTexture(imageUri='images/sun_surface.jpg')
# Create sphere using MeshBasicMaterial (which is unaffected by lighting)
StarSurface = p3j.MeshBasicMaterial(color=hexcolor, map=StarTexture)
StarGeom = p3j.SphereBufferGeometry(radius=rad, widthSegments=32,
heightSegments=16)
return p3j.Mesh(geometry=StarGeom, material=StarSurface,
position=pos, scale=scale)
def getTexture(self, filename):
tex = None
if filename is not None:
tex = three.ImageTexture(filename)
return tex