def is_volume_pro_available():
"""Returns `True` if there is a volume pro card available.
"""
try:
map = tvtk.VolumeProMapper()
except AttributeError:
return False
else:
return map.number_of_boards > 0
def _volume_mapper_type_changed(self, value):
mm = self.module_manager
if mm is None:
return
old_vm = self._volume_mapper
if old_vm is not None:
old_vm.on_trait_change(self.render, remove=True)
if value == 'RayCastMapper':
new_vm = tvtk.VolumeRayCastMapper()
self._volume_mapper = new_vm
self._ray_cast_functions = [
'RayCastCompositeFunction', 'RayCastMIPFunction',
'RayCastIsosurfaceFunction'
]
new_vm.volume_ray_cast_function = tvtk.VolumeRayCastCompositeFunction(
)
elif value == 'SmartVolumeMapper':
new_vm = tvtk.SmartVolumeMapper()
self._volume_mapper = new_vm
self._ray_cast_functions = ['']
elif value == 'TextureMapper2D':
new_vm = tvtk.VolumeTextureMapper2D()
self._volume_mapper = new_vm
self._ray_cast_functions = ['']
elif value == 'TextureMapper3D':
new_vm = tvtk.VolumeTextureMapper3D()
self._volume_mapper = new_vm
self._ray_cast_functions = ['']
elif value == 'VolumeProMapper':
new_vm = tvtk.VolumeProMapper()
self._volume_mapper = new_vm
self._ray_cast_functions = ['']
elif value == 'FixedPointVolumeRayCastMapper':
new_vm = tvtk.FixedPointVolumeRayCastMapper()
self._volume_mapper = new_vm
self._ray_cast_functions = ['']
elif value == 'UnstructuredGridVolumeRayCastMapper':
new_vm = tvtk.UnstructuredGridVolumeRayCastMapper()
self._volume_mapper = new_vm
self._ray_cast_functions = ['']
elif value == 'UnstructuredGridVolumeZSweepMapper':
new_vm = tvtk.UnstructuredGridVolumeZSweepMapper()
self._volume_mapper = new_vm
self._ray_cast_functions = ['']
src = mm.source
self.configure_connection(new_vm, src)
self.volume.mapper = new_vm
new_vm.on_trait_change(self.render)
