Best way to trim texture

[amshegarh]

I've seen this question before, has anything changed? I need to get texture(s) from spritesheet, sometimes texture needs to be cut in several ones and placed in different sprites, previous answer only took texture from img src and it was something more complicated than it should be for task this simple

[ivan.popelyshev]

still "new PIXI.Texture(baseTexture, frame, trim, orig, rotate)". Frame is obvious, but sometimes you need extra stuff,  and i cant explain other params in this thread, look in the docs. After 2-3 fails you'll get it

I dont know how to make it easier. If you want to make it even easier - propose an API for it. Yes, sometimes in private code I use methods that actually cut texture region to more texture regions, for example for NineSlice or to sort objects in isometry and cut sprites with multiple vertical lines. This is one of such attempts for pixi-v4: https://github.com/gameofbombs/pixi-heaven/tree/master/srcOld/base/atlas  but it doesnt have nor good API's nor docs.

[mobileben]

What are you trying to do? When you say a texture needs to be cut into several ones is how it cut determined at runtime?

[amshegarh]

Yeah

I have a working function already to cut a texture, not sure about its performance, but it does work

[mobileben]

By cutting do you mean generating new UVs? Or really generating a new texture? Since you are not fully  describing things, it does make it more difficult for people to help you.

[amshegarh]

Ok there is a problem, when i try to refer to base texture of a texture in spritesheet in such fashion

PIXI.Loader.shared.resources["spritesheet"].spritesheet.textures["Image144.png"].baseTexture

returned base texture is in fact of the whole spritesheet, but i need base texture of a single texture in spritesheet

How do i do that

[ivan.popelyshev]

ok, you have frame of original texture in that baseTexture, right? consider it frame1. you want to trim it, frame2. Resulting frame will be "(frame1.x + frame2.x, frame1.y + frame2.y, frame2.width, frame2.height)" . That's the problem i talked about - that basic addition of frames does not exist in pixi. You have to use your programming skills on it  PixiJS doesnt have to do everything for you . If that info is not enough, i can make demo in weekend.

In my case it was like that: https://github.com/gameofbombs/pixi-heaven/blob/master/srcOld/base/atlas/TextureRegion.ts#L17 , but you cant just ctrl+c that code, because i used extra fields for my atlas.

[amshegarh]

Unfortunate, oh well, i guess i'll just have to write another function, i'll just assume that PIXI.Texture.frame is the property i need

Thanks

[ivan.popelyshev]

Btw, if you change it directly, like texture.frame.x = something, you have to call updateUvs() afterwards. if you assign texture.frame = something, then you dont need it.