dbawel Posted January 12, 2018 Share Posted January 12, 2018 Hello, I need my particles affected by an airplane propeller flying through them. How might I accomplish this? Thanks, DB Quote Link to comment Share on other sites More sharing options...
JCPalmer Posted January 12, 2018 Share Posted January 12, 2018 Maybe the particles could be emitted from a source in front of plane. This source maintains its distance in front of the plane, should the plane actually move. Particles go in the opposite "direction" of the plane. These particles might actually give the feel plane is moving when it it not. Actually affecting with propeller seems a tall task. Quote Link to comment Share on other sites More sharing options...
Wingnut Posted January 13, 2018 Share Posted January 13, 2018 2 hours ago, dbawel said: I need my particles affected by an airplane propeller flying through them. How might I accomplish this? Nice details. Color affected? Scaling affected? ParticleTexture affected? Change the particle names? Here ya go. https://www.babylonjs-playground.com/#1NXKLI#11 Ahhh, the anticipation nearly killed ya, didn't it? Hey, the propeller passing thru the wall of particles... "affected" them. It changed their color! C'mon! Yuh yuh yuh, playground comedy... there's SO MUCH MORE to it than just delivering the gag. It's about timing, and anticipation, and disappointments. heh. @dbawel ... I bet you wanted particle POSITIONAL 'affect', eh? Ohhhh. I must have missed the part about WHAT TYPE-of 'affect'. Von Karman Vortices. You need to train all your particles... to do 'behavior'... and in-PARTICular... Fibonacci-based position updating. At least, it appears Fibonacci/Golden Mean behavior is seen in those Von Karman vortices and other "prop wash" dirt/snow swirlings. My fave is watching heli-skiers get dropped near snowy mountain-tops. Those helicopters make the coolest prop-wash vortices. Fun! http://www.html5gamedevs.com/topic/18959-add-attractorsreppels-to-your-partciles-system/ That thread has some talk about particle flocking/magnetism. *shrug* Party on! JCPalmer 1 Quote Link to comment Share on other sites More sharing options...
dbawel Posted January 13, 2018 Author Share Posted January 13, 2018 @JCPalmer - Yes, I can't find a way to do this. @Wingnut - I need the particles to swirl when the propeller passes through. Unless I emit other particles on collision. However, this just wouldn't look real. Thanks, DB Quote Link to comment Share on other sites More sharing options...
JCPalmer Posted January 15, 2018 Share Posted January 15, 2018 I did something for smoke using a particle system. Started it with this code, and this texture, from @jerome I think. The code needs changing to a horizontal direction, among other things. The likelihood of swirl is not something I would want to bet on. dbawel 1 Quote Link to comment Share on other sites More sharing options...
Pryme8 Posted January 15, 2018 Share Posted January 15, 2018 https://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1593&context=masters_theses_2 >_< Quote Link to comment Share on other sites More sharing options...
dbawel Posted January 16, 2018 Author Share Posted January 16, 2018 @Pryme8 - Interesting. @JCPalmer - Allot of code, but perhaps some I can use. I might be able to simulate by placing particle emitters on the propeller and registering collisions with particle fields. We'll have to see... DB Quote Link to comment Share on other sites More sharing options...
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