Set opacity of chached image [5.0.1]

[fervanrijswijk]

I have a hitspot image. When opacity is 1 it provides a stroke and a aplha fill as overlay for an existing image on the stage.

But, my starting position should be opacity 0, click on it and opacity should be 1.

When i try this example on the tutorial part is does not work either. Trying to set the lions opacity does not work for me. The monkey however, does accept the opacity.

Therefor the problem lies in the cached object... How can i solve this problem?

[lavrton]

Currently you can't change opacity of cached node. You need clearCache before setting opacity. @ericdrowell look at #787 please. It is related with current issue.

[fervanrijswijk]

Tahks for the reply,

But clearing the cache and setting the opacity to 0 will resolve into an non-clickable region because all pixels have 0 opacity.

[fervanrijswijk]

Is it possible to manually replace the image data (stripped with opacity pixels)

[lavrton]

You are using drawHitFromCache, right? You can:

1. Create image with opacity 1
2. Create hit
3. only THEN set opacity to 0
   See demo: http://jsbin.com/yaqap/1/edit

[lavrton]

Oh. Looks like it will not work in this way, because after clearCache hitFunc also cleared

[lavrton]

You may use ultra hack: set opacity to 0.01 - invisible for you, but visiable for hit! http://jsbin.com/yaqap/2/edit

[fervanrijswijk]

Thanks. I was experimenting with that already. I think i'll wait for the update. Nothing is broken yet.. :-)

[ericdrowell]

Ah, I think it makes sense for opacity to affect cached shapes. I'll fix this up.

[lavrton]

fixed cb52be6