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Found 7 results

  1. Attract/Morph particles to texture

    I have quite a simple question but haven't been able to figure it out yet. Using attribfrommap I have particles getting generated from a texture (e.g. circle). How can I attract/morph these particles to another texture (e.g. rectangle)? Thanks
  2. Dear community, I am working on a little particle system that I need some help with and I hope that you can help me out somehow: I am emitting particles from points A. These particles are attracted by another pointcloud B via POP Attract, with the attraction type set to points. So far so good. My question is now: How can I vary the attraction force inside pointcloud B for each point? Is that possible? I've been looking into and reading the docs, of course, but all to no avail. Does anybody have an idea on how to solve this issue, meaning giving the points in pointcloud B varying attraction forces? Is there an attribute that I have to apply on pointcloud B, that POP attract could use? Best wishes and merry christmas and Chanukka, Nicolas
  3. Points follow points

    Hello everybody! I would like to simulate particles on top of pre-animated / pre-simulated (cached) points. So far I only managed to do the "transfer v attribute inside a sop solver" trick. Unfortunately it does not give me the result I imagine. Instead of inheriting only the velocity I would rather like the points to be attracted by the pre-animated points so they tumble around and follow them the animated ones. Basically I am trying to animate some points and then do a simulation on top of it to give it a more natural feel and to be able to art direct the simulation better. I would greatly appreciate if somebody could give me a hint or a solution on how to do that? Thank you! Here is my current progress (particles inherit v): pop_transfer_vel.hiplc
  4. I have a question about houdini cloth. I am looking for nCloth feature 'paint input mesh attract'. Basically I paint influences on mesh then attach an animated mesh which has same topology as nCloth's one. When siming it, nCloth mesh tries to follow the animated mesh as closely as possible. Non-influence vertexes are fully dynamics. Do we have a similar function in Houdini16?
  5. Attract to Target Challenges

    Hey guys, So i am attempting an attraction and formation effect once again, but stuck in between. So let me get this started, Suppose there are certain points scattered on a plane surface and they all have same facing direction. Now they need to attract to a target object and lock to the position and deform according to the movement of target object. They should orient according to the normals of the target object and should slide over the surface of the object as soon as they reach near to the target. I have scattered same number of points on the surface and target objects in order to match perfectly and am able to drive those particles towards the target object and lock them onto their respective ids. But the thing is i am not able to slide over the surface according to orientation of target object and not able to blend the orientation. As soon as i add pop spin or torque my orientation goes for a toss as it doesnt match to the target objects orientation. So i need to blend the orientation when they are near to their target ids and when they are finding it. Then i need to drive these as rigid bodies so that they do not penetrate when they stick to their targets so thats another issue. So there are couple of issues i am stuck with and need to sort out one by one. If someone could help me with this it would be great, I will try and post a hip file meanwhile if i can.
  6. Hey everyone, I originally started this thread on the sidefx forums here, but I'm still stuck on how to proceed with this effect. My initial goal is to get particles flocking by color. Once I have that figured out, I need the particles to also flock around a goal geometry so they can take its shape. In the end I'd like to have blobs of colored particles oozing/crawling around the geometry's surface. I've done some research on flocking concepts, so I know that I need to create alignment, repulsion, and attraction forces to manipulate the particles, I'm just stumped on how to execute the concepts in Houdini. I have the cmivfx tutorial on flocking, but it looks like some of the SOPs have changed with the years... preventing me from finishing the tutorial In my previous thread I was introduced to the pop steer nodes, but they're lacking sufficient documentation/example scenes so I'm having trouble getting started with them. I think using those nodes with VEX would be the best way to do this, but I'm open to anything to get me started! Thanks! Mike color_and_shape_flocking.hiplc
  7. POP forces and Bullet sim

    Hi everyone. I've come across a little hurdle, that I'm sure must have a simple solution, but I can't quite figure it out. I've created a simple scene to illustrate what I'm after (see attached). Basically I'm using the POP Attract force to drive the animation of my RBD objects (I'm using the Bullet solver), and I'm getting the result that I'm after. My predicament now is that I want to vary the effect of the force on a per object level. So in reference to the example scene I've attached, have the torus objects be less effected by the attract force than the teapot objects. Like I said, I'm sure there must be a simple solution for this, and I'm hoping one of you clever people can point me in the right direction. cheers! bulletAttract.hip
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