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+--- Thread: Is it possible to add force to specific particles on a rope? (/thread-2296.html)
Is it possible to add force to specific particles on a rope? - wenzy - 06-06-2020
Is it possible to add force to specific particles on a rope? For example I have a rope which the head and tail is fixed ( by using ObiParticleAttachment) , and I want the middle part of the rope can bounce by specific force. Not sure is it possible because I can't find the related API. Or can we use the pin constrains to reach a similar effect ?
RE: Is it possible to add force to specific particles on a rope? - josemendez - 07-06-2020
(06-06-2020, 10:15 PM)wenzy Wrote: Is it possible to add force to specific particles on a rope? For example I have a rope which the head and tail is fixed ( by using ObiParticleAttachment) , and I want the middle part of the rope can bounce by specific force. Not sure is it possible because I can't find the related API. Or can we use the pin constrains to reach a similar effect ?
Hi Wenzy,
Yes, you can add external forces to specific particles. The solver has a "externalForces" array, just like int has "positions", "velocities", etc. Each entry in the array is the external force applied to that particle.
You can find all available per-particle arrays in the API docs for the ObiSolver class.
You can take the ObiAmbientForceZone class as reference on how to set external forces.