PIXI js - Pixel Data is Zero
I'm currently working on a little game written in JS using Pixi.js(https://github.com/pixijs). One Problem has occured currently, I'm trying to implement pixel exact collision between shapes, while I was programing a little I noticed that all the pixel RBGA values of my images are just 0.
I searched on the web but for a while but the only reason for those Problems I could find was that the canvas was tainted because of CORS(Pixel RGB values are all zero).
But this can't be the reason in my case because I created the sprites myself, I'm not loading them from other (any) domains or something like that.
Could this be a problem with the images? How do I avoid that? I will append some code that works if I use other images (some images I downloaded for tests).
const app = new PIXI.Application({width: 500, height: 500});
document.body.appendChild(app.view);
PIXI.loader.add("sprites/test.png")
.load(() => {
let img = new PIXI.Sprite(PIXI.loader.resources["sprites/test.png"].texture);
app.stage.addChild(img);
console.log(app.renderer.extract.pixels(img));
});
Edit: I tried getting the RGBA values using a short Java Program btw, same problem. Every single value is zero.
html5-canvas pixi.js
asked Nov 18 '18 at 19:52
EadHEadH
11
add a comment |
I'm currently working on a little game written in JS using Pixi.js(https://github.com/pixijs). One Problem has occured currently, I'm trying to implement pixel exact collision between shapes, while I was programing a little I noticed that all the pixel RBGA values of my images are just 0.
I searched on the web but for a while but the only reason for those Problems I could find was that the canvas was tainted because of CORS(Pixel RGB values are all zero).
But this can't be the reason in my case because I created the sprites myself, I'm not loading them from other (any) domains or something like that.
Could this be a problem with the images? How do I avoid that? I will append some code that works if I use other images (some images I downloaded for tests).
const app = new PIXI.Application({width: 500, height: 500});
document.body.appendChild(app.view);
PIXI.loader.add("sprites/test.png")
.load(() => {
let img = new PIXI.Sprite(PIXI.loader.resources["sprites/test.png"].texture);
app.stage.addChild(img);
console.log(app.renderer.extract.pixels(img));
});
Edit: I tried getting the RGBA values using a short Java Program btw, same problem. Every single value is zero.
html5-canvas pixi.js
asked Nov 18 '18 at 19:52
EadHEadH
11
Have you checked that you are loading the images from the same exact domain? For example www.example.com is different than example.com.
– Alesana
Nov 18 '18 at 19:56
I don't load them from any domain if I understand your answer correctly.
– EadH
Nov 18 '18 at 20:21
any other ideas?
– EadH
Nov 20 '18 at 11:16
add a comment |
I'm currently working on a little game written in JS using Pixi.js(https://github.com/pixijs). One Problem has occured currently, I'm trying to implement pixel exact collision between shapes, while I was programing a little I noticed that all the pixel RBGA values of my images are just 0.
I searched on the web but for a while but the only reason for those Problems I could find was that the canvas was tainted because of CORS(Pixel RGB values are all zero).
But this can't be the reason in my case because I created the sprites myself, I'm not loading them from other (any) domains or something like that.
Could this be a problem with the images? How do I avoid that? I will append some code that works if I use other images (some images I downloaded for tests).
const app = new PIXI.Application({width: 500, height: 500});
document.body.appendChild(app.view);
PIXI.loader.add("sprites/test.png")
.load(() => {
let img = new PIXI.Sprite(PIXI.loader.resources["sprites/test.png"].texture);
app.stage.addChild(img);
console.log(app.renderer.extract.pixels(img));
});
Edit: I tried getting the RGBA values using a short Java Program btw, same problem. Every single value is zero.
html5-canvas pixi.js
asked Nov 18 '18 at 19:52
EadHEadH
11
I'm currently working on a little game written in JS using Pixi.js(https://github.com/pixijs). One Problem has occured currently, I'm trying to implement pixel exact collision between shapes, while I was programing a little I noticed that all the pixel RBGA values of my images are just 0.
I searched on the web but for a while but the only reason for those Problems I could find was that the canvas was tainted because of CORS(Pixel RGB values are all zero).
But this can't be the reason in my case because I created the sprites myself, I'm not loading them from other (any) domains or something like that.
Could this be a problem with the images? How do I avoid that? I will append some code that works if I use other images (some images I downloaded for tests).
const app = new PIXI.Application({width: 500, height: 500});
document.body.appendChild(app.view);
PIXI.loader.add("sprites/test.png")
.load(() => {
let img = new PIXI.Sprite(PIXI.loader.resources["sprites/test.png"].texture);
app.stage.addChild(img);
console.log(app.renderer.extract.pixels(img));
});
Edit: I tried getting the RGBA values using a short Java Program btw, same problem. Every single value is zero.
html5-canvas pixi.js
html5-canvas pixi.js
asked Nov 18 '18 at 19:52
EadHEadH
11
asked Nov 18 '18 at 19:52
EadHEadH
11
edited Nov 18 '18 at 20:21
EadH
asked Nov 18 '18 at 19:52
EadHEadH
11
asked Nov 18 '18 at 19:52
EadHEadH
11
asked Nov 18 '18 at 19:52
EadHEadH
11
11
Have you checked that you are loading the images from the same exact domain? For example www.example.com is different than example.com.
– Alesana
Nov 18 '18 at 19:56
I don't load them from any domain if I understand your answer correctly.
– EadH
Nov 18 '18 at 20:21
any other ideas?
– EadH
Nov 20 '18 at 11:16
add a comment |
Have you checked that you are loading the images from the same exact domain? For example www.example.com is different than example.com.
– Alesana
Nov 18 '18 at 19:56
I don't load them from any domain if I understand your answer correctly.
– EadH
Nov 18 '18 at 20:21
any other ideas?
– EadH
Nov 20 '18 at 11:16
Have you checked that you are loading the images from the same exact domain? For example www.example.com is different than example.com.
– Alesana
Nov 18 '18 at 19:56
Have you checked that you are loading the images from the same exact domain? For example www.example.com is different than example.com.
– Alesana
Nov 18 '18 at 19:56
I don't load them from any domain if I understand your answer correctly.
– EadH
Nov 18 '18 at 20:21
I don't load them from any domain if I understand your answer correctly.
– EadH
Nov 18 '18 at 20:21
any other ideas?
– EadH
Nov 20 '18 at 11:16
any other ideas?
– EadH
Nov 20 '18 at 11:16
add a comment |
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Have you checked that you are loading the images from the same exact domain? For example www.example.com is different than example.com.
– Alesana
Nov 18 '18 at 19:56
I don't load them from any domain if I understand your answer correctly.
– EadH
Nov 18 '18 at 20:21
any other ideas?
– EadH
Nov 20 '18 at 11:16