How to set zoom factor in Mayavi

问题

I am trying to set the zoom factor in Mayavi2, for example:

from mayavi import mlab

mlab.test_plot3d()
mlab.show()
f = mlab.gcf()
cam = f.scene.camera
cam.zoom(0.1)
mlab.draw()

but nothing happens. The zoom is the same as before; have I missed something?

回答1:

It seems that you have just inverted 2 lines. mlab.show() and mlab.draw() !

Try this:

from mayavi import mlab

currfig = mlab.test_plot3d()
mlab.draw()

cam = currfig.scene.camera
for ii in range(100):
  cam.zoom(0.99)
  mlab.draw()

mlab.show()

回答2:

You can use mlab.view(distance=200)

I don't know of a useful scale to tell you what exactly that distance number means though, I use some experimenting to determine good values.

来源：https://stackoverflow.com/questions/25783180/how-to-set-zoom-factor-in-mayavi