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- """Load and render a 3D Volume
- mode=0, composite rendering
- mode=1, maximum-projection rendering"""
- from vedo import dataurl, Volume, show
- vol1 = Volume(dataurl+"vase.vti")
- # can set colors and transparencies along the scalar range
- # from minimum to maximum value. In this example voxels with
- # the smallest value will be completely transparent (and white)
- # while voxels with highest value of the scalar will get alpha=0.8
- # and color will be=(0,0,1)
- vol1.color(["white", "fuchsia", "dg", (0,0,1)])
- #vol1.color('jet') # a matplotlib colormap name is also accepted
- vol1.alpha([0.0, 0.2, 0.3, 0.8])
- # a transparency for the GRADIENT of the scalar can also be set:
- # in this case when the scalar is ~constant the gradient is ~zero
- # and the voxel are made transparent:
- vol1.alpha_gradient([0.0, 0.5, 0.9])
- vol1.add_scalarbar3d('composite shade')
- vol1.scalarbar = vol1.scalarbar.clone2d("center-right", size=0.2)
- # mode = 1 is maximum-projection volume rendering
- vol2 = Volume(dataurl+"vase.vti").mode(1)
- vol2.add_scalarbar3d('maximum-projection')
- vol2.scalarbar = vol2.scalarbar.clone2d("center-right", size=0.2)
- # show command creates and returns an instance of class Plotter
- show([[vol1, __doc__], vol2], N=2, axes=1).close()
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