how to resize 2D sprite
There are many ways to resize a sprite. But it depends how your sprite is stored, whether you're working in D3D or OpenGL, or even writing your own software rasterizer, etc.
Author
i meant 2d world , no 3d World.
a few days ago i learned how to rotate 2D , Now i want Resizing.
thanks
a few days ago i learned how to rotate 2D , Now i want Resizing.
thanks
Quote:Original post by Emil_HalimYour rotation function can do scaling too. Just multiply the cos/sin rotation vector by a scaling constant.
a few days ago i learned how to rotate 2D , Now i want Resizing.
It's not as efficient as a decicated a sprite scaler but at least you won't have to write much code.
Author
Hi doynax
thanks for your help. i will try it and let you know the result.
actually i am using rotate & resize for a percalculated some sprite, so it is
not for real time animation.
thanks for your help. i will try it and let you know the result.
actually i am using rotate & resize for a percalculated some sprite, so it is
not for real time animation.
Author
it works very well but you need to change the next line
outerDeltaV = -innerDeltaU;
to
outerDeltaV = innerDeltaU;
and
innerDeltaU = cos(3.14*2) * ScaleFactor;
innerDeltaV = sin(3.14*2) * ScaleFactor;
question :
how can i make 2 scale factors, one (ScaleX) for width and outher (ScaleY) for height.
thanks for help
outerDeltaV = -innerDeltaU;
to
outerDeltaV = innerDeltaU;
and
innerDeltaU = cos(3.14*2) * ScaleFactor;
innerDeltaV = sin(3.14*2) * ScaleFactor;
question :
how can i make 2 scale factors, one (ScaleX) for width and outher (ScaleY) for height.
thanks for help
This topic is closed to new replies.
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