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Rotating a texture

Started by Jannes Jul 1, 2004 at 9:36 AM 5 replies 1.6k views

Original Post

Jul 1, 2004 at 9:36 AM

Hi, i was wondering if it is possible to rotate a texture without modifying the file or using a rotationmatrix. i just need to rotate it by 0°,90°,180°,270°. Say after loading it from a file. thx alot

xg0blin

Jul 1, 2004 at 9:42 AM

I don't know why you wouldn't want to use a rotation matrix, but you don't have to I guess. You could always just modify the texture coordinates.

Jannes

Jul 1, 2004 at 10:00 AM

hmm

sth i thought about too. But if i use this texture only for a sprite, there arent any texture coords defined. The texture gets assigned to a LPDIRECT3DTEXTURE9 and then is used in the SpriteInterface-Draw function. Think i have to read more about this.

Joeman

Jul 2, 2004 at 3:04 AM

instead of using sprites, just render a the texture on a quad. Then you can do a lot of cool stuff with it like lighting, rotating, etc.....

Syrillix

Jul 2, 2004 at 3:26 AM

if your using the sprite interface to draw the texture then the only way i think you could do is by manipulating the texture matrix.
yes, i know you will have to use a rotation matrix, but really, whats so bad about that?

Jannes

Jul 2, 2004 at 3:42 AM

Its nothing bad about it, except i have to rewrite alot of code :(

Syrillix

Jul 2, 2004 at 3:55 AM

yeah, i know what you mean.. that whole writing code business is sooo overrated ;)

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