# Perlin noise transition

**URL:** <https://forum.kirupa.com/t/perlin-noise-transition/242797>\
**Category:** Uncategorized\
**Created:** [October 30, 2007, 2:40pm UTC](https://forum.kirupa.com/t/perlin-noise-transition/242797 "2007-10-30T14:40:36Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Aquilonian](https://avatars.discourse-cdn.com/v4/letter/a/97f17d/32.png) [@Aquilonian](https://forum.kirupa.com/u/Aquilonian)\
**Post date:** [October 30, 2007, 2:40pm UTC](https://forum.kirupa.com/t/perlin-noise-transition/242797/1 "2007-10-30T14:40:36Z")

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Hi!  
I have an array of bitmapDatas with perlinNoise in the alpha channel  
I want to use the bitmap of them as a sequence of masks to create fire effect  
Till now is working fine, however, the problem is the transition from the last frame to the first, i want a smooth transition, but dont know how to do.I was thinking on changing the alpha of the last bitmaps until goes 0, and starting with the first bitmaps with alpha 0 and increasing and putting somehow the last ones over the first ones…but im not sure about how to do it  
Any ideas…?Or i will have to do it manually in photoshop…