Example Two: Changing materials

For the code for this example, see Example2.py
Start this example by making a collection of points, v:
>>> v = ( (0.,0.,0.), (1.,0.,0.),
      (0.,1.,0.), (1.,1.,0.),
      (0.,2.,0.), (1.,2.,0.),
      (0.,3.,0.), (1.,3.,0.),
      (0.,4.,0.), (1.,4.,0.),
      (0.,5.,0.), (1.,5.,0.),
      (0.,6.,0.), (1.,6.,0.))

and defining some colors:
>>> RED = (1., 0., 0.)
>>> GREEN = (0., 1., 0.)
>>> BLUE = (0., 0., 1.)

and collections of colors:
>>> col = ( RED, RED, RED, GREEN, GREEN, GREEN, BLUE, BLUE, BLUE, RED, GREEN, BLUE, RED, GREEN )

>>> col2 = ( RED, RED, RED, RED, RED, RED, RED, GREEN, GREEN, GREEN, GREEN, GREEN, GREEN, GREEN)

Define a list to specify the faces of the lines we make later:
>>> ind = (range(14),)

Start up a viewer :

>>> from DejaVu import Viewer
>>> vi = Viewer()

and make a line:

>>> from DejaVu.IndexedPolylines import IndexedPolylines
>>> p = IndexedPolylines('testColor', vertices = v, faces = ind, materials = col)

and add it to the viewer:
>>> vi.AddObject(p)

to see the new object, we have to redraw the scene:
>>> vi.Redraw()

and make another line:
>>> p2 = IndexedPolylines('testColor2', vertices = v, faces = ind,materials = col2)

and add it to the viewer:

>>> vi.AddObject(p2)

to see the new object, we have to redraw the scene:
>>> vi.Redraw()

With these two objects in the viewer, try changing the current object and transforming it.

Add another line:
>>> norm = ((1.0, 0., 0.0 ),) * 14
>>> pn = IndexedPolylines('testMaterial', vertices = v, faces = ind,
materials = col, vnormals = norm)
>>> vi.AddObject(pn)

to see the new object, we have to redraw the scene:
>>> vi.Redraw()

Add another line:
>>> pn2col = IndexedPolylines('testMaterial2', vertices = v, faces =ind,
materials =col2,vnormals = norm)

>>> vi.AddObject(pn2col)
to see the new object, we have to redraw the scene:
>>> vi.Redraw()

Finally, try making some rows of spheres colored differently:
>>> from DejaVu.Spheres import Spheres
>>> s1 = Spheres('test', centers = v, radii = (0.4,), materials = col, quality=15)
>>> vi.AddObject(s1)
to see the new object, we have to redraw the scene:
>>> vi.Redraw()

Add another set of spheres, colored differently with default quality.
>>> s2 = Spheres('test7', centers = v, radii = (0.4,), materials = col2)
>>> vi.AddObject(s2)
to see the new object, we have to redraw the scene:
>>> vi.Redraw()