How can we change the opacity of image on 2Drender?

Question

I would to know if there is a function that change the opasity of image on 2D render (like the action of hover on the canvas) thanks a lot,AMAL

score 0 · Answer 1 · answered Mar 20 '14 at 12:06

0

2D render is basic a HTML canvas, opacity can be done by settings globalAlpha property :

ctx.globalAlpha=0.2;

answered Mar 20 '14 at 12:06

Younes

score 0 · Answer 2 · answered Apr 14 '16 at 18:01

Look at the following line of code in renderer2D:

var _labelOpacity = 1;//_volume._labelmap._opacity;

I don't know the reason the opacity was changed to be always 1, but I uncommented the right side and it worked for me.

2 Answers2