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  1. I vector dot product problem

    Thanks for your responsiveness Jiri. Thats really cool idea. But I think this method won't work in my case, cause I'm reading my geo as packed disk primitive. And I would like to solve this during shading.
  2. Hi, community. Let's say I have an object in my scene and I want to change it's color in render depending on camera height (view direction). For example : when i'm looking from above to that object I want to color it orange, otherwise to color it blue. The first idea I had was to compute dot product in shopnet between I(vector) and another manually created up(vector) pointing up. But the result did not make me happy. For some reason on the rendering image it separetes an object and colors it from the center of an image. And it does't matter from which angle I'm looking at it. The separation line is always at the center. Did anyone confront with this kind of problem? Will be grateful if Anyone colud hepl me with that. Also, attached a rendered image.
  3. Thanks, James. It works perfect. Just what I needed.
  4. Thanks a lot for your advise, Yon. I'll surely try to do that. But now I've started thinking what it would be like if i had more particles. And its very easy to get confused while working with takes. Is there any way to put my Rop ouput in some kinda FOR loop? That will take each point, simulate its smoke and output its cache to disk?
  5. Hello everyone. I've did not encounter that challenge before. I'm trying to simulate an exlosion with flying out of particles that should leave smoke train behind them. It's takes a lot of time and resources to simulate them all at once. I've decided to simulate them separetely. I've already saved my main explosion cache to disk by using Rop Output node. And now I want to simulate and save to disk each particle smoke simulation one by one. Is there any way to do that automatically? Does anyone have any an opinion how to do that? It's not a big deal if i had let's say 5 particles but in my case I have 25. I would be graceful if Anyone could help me with that question.