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Sprite interactivity with alpha channel from png


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Just wondering are there any solutions to ignore zero alpha channel on png images for mouse events. I make sprite from image with complex form and transparent area on it. And when I make it interactive mouse reacts on this transparent areas and it looks ugly. I know I can check pixels under mouse, and if there is no solution I'll have to do it. For example in flash there is library interactivePNG which do such things. Just wondering are there something similar for pixi.js?

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