[Question/Help] Can I use a PNG binary mask for hitover area instead of polygon?

[newbiedev]

Hello, as the title implies, I'm trying to create a hitover area using a PNG binary mask instead of a polygon mask. I couldn't really find something for this in the documentation. Is that possible?

Currently, I start with a PNG binary mask, convert it to a polygon (list of [x,y] coordinates), and then mask my sprites for a hitover area. This works really well when the initial binary mask is well defined and closed. However, if the binary mask has disconnected components, the hitover area yields unwanted actions. Probably due to there being multiple polygons during the mask -> polygon process.

Thanks so much in advance!

[ivan.popelyshev]

convert mask to polygon - sorry, pixi doesnt have that.

though , pixel perfect interaction is here: https://github.com/pixijs/pixijs/wiki/v5-Hacks#pixel-perfect-interaction

[Avihaa]

reshape(3,3,3) #3 channel image mask = np. zeros(shape=(3,3)) mask[1,1] = 1 # binary mask mask_3d = np. stack((mask,mask,mask),axis=0) #3 channel mask ## Answer 1 # Simply multiply the image array with the mask masked_arr = arr*mask_3d ## Answer 2 # Use the where function in numpy masked_arr = np.

[newbiedev]

@ivan.popelyshev

Thanks for the comment! I meant to say that I convert my PNG binary mask to polygon outside of PIXI. I use Python to pre-compute the polygons. I'll try the link you sent above.

[Avihaa]

reshape(3,3,3) #3 channel image mask = np. zeros(shape=(3,3)) mask[1,1] = 1 # binary mask mask_3d = np. stack((mask,mask,mask),axis=0) #3 channel mask ## Answer 1 # Simply multiply the image array with the mask masked_arr = arr*mask_3d ## Answer 2 # Use the where function in numpy masked_arr = np.

 

 

 

 

anonigviewer

bingenerator