I'm trying to get the lines to emphasize the light direction, but can't seem to control the Alpha in anyway to do that... or fake it.

  • $\begingroup$ Hello :). It is possible to fake it by using the Distance modifier in the Freestyle Line Style. I can post a full answer if you're interested. $\endgroup$ – Jachym Michal Dec 3 '19 at 18:14
  • $\begingroup$ I have been trying to the "Distance from Camera," which adds a similar affect but still adds lines in areas not affected by the light and does not match the direction. I have not tried distance from object tho. Would you suggest placing an object that fakes the light location and use that? $\endgroup$ – user84880 Dec 3 '19 at 19:08
  • $\begingroup$ Freestyle lines cannot be affected by your actual lightsource, because they are added on top of the render. $\endgroup$ – Jachym Michal Dec 3 '19 at 19:19

You can fake it with the Distance from Object modifier.
The distance from specified object will then control the transparency.

How to:
1) In your Freestyle Line Style go to the Alpha tab and add the Distance from Object modifier.
2) Set the Blend mode to Subtract
3) Set your Target object. (from which the distance will be measured)
4) Set Min/Max Range for best result. (or use the Fill range by selection button)
5) Done.

Line Style setings enter image description here

Result enter image description here

  • 1
    $\begingroup$ Great! Thank you! I will give it a try. $\endgroup$ – user84880 Dec 3 '19 at 19:18

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