Viewer Example Volume Rendering

Example of using Viewer for Volume Rendering

• Python

  Note

  Python API version 3 and later

  import sys
  from meshlib import mrmeshpy as mm
  from meshlib import mrviewerpy as mv
  import os
   
  # load volume file
  volume = mm.loadVoxels("stag_beetle.dcm")[0]
   
  # setup scene object for voxels data
  ov = mm.ObjectVoxels()
  ov.setName("Beetle")
  ov.construct(volume)
  ov.setIsoValue(volume.min * 0.6 + volume.max * 0.4)
  ov.select(True)
   
  # add it to scene
  mm.SceneRoot.get().addChild(ov)
   
  # start viewer
  mv.launch(mv.ViewerLaunchParams(),mv.ViewerSetup())
   
  # enable volume rendering (important to do in GUI thread)
  mv.runFromGUIThread( lambda : ov.enableVolumeRendering(True) )
   
  mv.Viewer().preciseFitDataViewport()
   
  # setup volume rendering settings
  vrp = mm.ObjectVoxels.VolumeRenderingParams()
  vrp.alphaType = mm.ObjectVoxels.VolumeRenderingParams.AlphaType.LinearIncreasing
  vrp.min = volume.min
  vrp.max = volume.max
  vrp.alphaLimit = 150
  vrp.lutType = mm.ObjectVoxels.VolumeRenderingParams.LutType.Rainbow
  vrp.shadingType = mm.ObjectVoxels.VolumeRenderingParams.ShadingType.ValueGradient
   
  # apply volume rendering settings in GUI thread
  mv.runFromGUIThread( lambda : ov.setVolumeRenderingParams(vrp) )
   
  # fit camera
  mv.Viewer().preciseFitDataViewport()
   
  os.system("pause")