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Sand Trails in C4D
C4D R17 Scene
So I have a plane as my floor with a collision tag
Several Spheres using Mograph and a Rigid tag so they interact with one another
A animated sphere with an Attractor tag so all the other spheres follow it around the scene.
What I’m trying to achieve though is when the spheres collide with the floor (sand texture) they make a trail. Currently they make an indentation (which is good) but once they move, there are no physical trails, just indents that follow the sphere around.
Any ideas to have the trails remain?
replied 2 years, 5 months ago 5 Members · 7 Replies
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7 Replies
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how are the dents in the floor currently being made? What’s the floor (a plane or a Floor (or something else))?
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2nd line of my post
Plane with a collision tag
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After having a quick look this is what I did.
1. Add a Plane object underneath your sand plane and offset it on negative Y but, not beyond the depth of your spheres so they still show.
2. Apply a Static Rigid Body tag to this new plane and remove it from your sand plane if there is one, and make sure the Collision Deformer is applied to your sand plane. Collision Deformer will do the work.
3. The sand plane will need 100-200 (maybe more) subdivisions to look convincing but you can cache the result in the Collision Deformer.
4. In the Collision Deformer Object tab set the Falloff to Surface (Collider is best but much slower at computing result) and Restore Shape to 0% (Play with this for the effect you want).
5. On the Collider tab set it to Outside (worked for me, again play with the options).Your spheres should now leave trails as they roll about 🙂
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Hello.
I was after the same effect and got close to it BUT no matter what I do the objects simply “sink” into the surface. I played with Object Falloff and Collision solvers, the same unrealistic result. I increased the object segments -nothing. Anywhere else I could look at?
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Hi Dovlet,
I simulated this, as in the attached file, and it did not happen that the balls sank in the sand. You just have to change the “restore shape” value in the “object” tab to 0% and slightly raise the “size” and “step” values in the “advanced” tab. I saw that you are using “clothe surface”. If you do not need it, you can delete it, as it may be the cause of the problem.
I think that it is better to open a new topic when you have another subject to make it easier later for forum visitors to benefit from it through the search feature.
I hope this helps you.
Thanks!
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Thank you so much!
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You’re welcome! so glad this was helpful to you.
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