alloboy Posted March 3, 2013 Share Posted March 3, 2013 Hi Everyone, Wondering if anyone can point me in the right direction on how to create an energy blast. I am creating a comet hitting the ground and want to make a large circular blast, which rapidly comes towards the camera once the Comet makes contct with the ground. I think I will use particles, but not sure how to approach this. If anyone has any odeas and time to let me know how, that would be amazing. Look forward to hearing your suggestions. Thanks a lot. Quote Link to comment Share on other sites More sharing options...
Annon Posted March 4, 2013 Share Posted March 4, 2013 (edited) Well you could start with a source that's velocity pointed outwards from the impact point. I've created you a quick scene, I wouldn't personally do it with object nodes, but it was quick to just lay it all out from shelf tools. I've annotated it a bit to show you what's going on. Hope it helps as a starting point... C P.s. Are you at Axis? quick_impactBlast.hip Edited March 4, 2013 by ChristianW 1 Quote Link to comment Share on other sites More sharing options...
alloboy Posted March 4, 2013 Author Share Posted March 4, 2013 (edited) Hi Illusionist, This is great, thanks. Exactly what I am after. I tried a few things and this is the simplest and most effective way. Much appreciated. Yes, I was at Axis, as a runner and then worked on Cloth Dynamics for Spartan Ops. Now I am trying to get things sorted with Houdini VFX. Why you ask? Are you interested in Axis? 1 More thing, where do you learn more about VOPSOPs? I see you have created one here, but I find it hard to understand. If you know, then please let me know. Cheers! Edited March 4, 2013 by alloboy Quote Link to comment Share on other sites More sharing options...
jim c Posted March 4, 2013 Share Posted March 4, 2013 There's a really cool tutorial set on cg-masters.com called Procedural Asteriod Hits by Peter Bowmar, that might be of use. He specifically has 'roids colliding with the surface, explosions, etc. Quote Link to comment Share on other sites More sharing options...
Mr. Green Posted March 10, 2013 Share Posted March 10, 2013 Well you could start with a source that's velocity pointed outwards from the impact point. I've created you a quick scene, I wouldn't personally do it with object nodes, but it was quick to just lay it all out from shelf tools. I've annotated it a bit to show you what's going on. Hope it helps as a starting point... C P.s. Are you at Axis? Thank you very much for that example. You have finally enlightened me on how to add velocity to the fluid. I have a question though. Why did you convert the sphere to a volume, and then scatter points on it? Why not just use the sphere as the source? Quote Link to comment Share on other sites More sharing options...
magneto Posted March 11, 2013 Share Posted March 11, 2013 Thank you very much for that example. You have finally enlightened me on how to add velocity to the fluid. I have a question though. Why did you convert the sphere to a volume, and then scatter points on it? Why not just use the sphere as the source? If you just use the sphere, scatter will create points on the surface. If you use a volume, the points will be created anywhere inside the sphere volume. Quote Link to comment Share on other sites More sharing options...
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