Let’s desing a simple scene containing some torus and connect them with each other to make a free moving chain by gravity.
We used to use “Blender Game Engine” to simulate a physics motion and record it to use in rendering. Now, we have a powerful feature “Rigid Body Tool” embedded in 2.66a version.
1) Add a torus and make it smooth:
2) You can duplicate it and rotate by 90 degrees in x axis:
3) You can continue as much as in this way to make a longer chain, rename them from the properties panel:
4) Now let’s select the Torus1 and click “Add Passive”.
5) Second and the rest will be “Active” rigid body (Ctrl-R shortcut is helpful):
6) When you press Alt-A for animation, you will see them they are exploding 🙂
7) Go to the first frame (Shift-Left Arrow), and let’s give each active torus “contsraints” to connect the previous torus:
8) Let’s look closer to the physics panel and change some values like this image:
Selected Torus2 has a “Hinge” value and Object 1 is Torus1, Object 2 is Torus2 itself.
9) Do this 8th step till the last torus. And press Alt-A again!
10) Give some materials and background to render the animation with cycles or blender internal render!
· For repeating actions you can use F3 menu shortcut to recall that command.
· You can also use “Point” instead of “Hinge”
· For very slow animations you can use baking “Rigid Body Cache” placed in “Scene” panel
Here is my animation: http://www.youtube.com/watch?v=mJW1EPEgMVo
View Documentation: http://tr.scribd.com/doc/129477966/Chains