6
$\begingroup$

I hope this question is clear enough. I am trying to create a 3D model of a tesselated origami model. What I want to do is translate a vertex and have the surrounding vertices translate such that edges connecting them to the translated vertex keep their original length.

Here is an image of the origami model:

Origami Model

Here is an image of the 3D model of the flat tesselated pattern:

3D Model

I hope you can see here that I would like to translate the centre points of the concave hexagons (the vertices currently selected) and have the connected edges keep their length as if it was made of a rigid material.

$\endgroup$
  • $\begingroup$ I'm confused as to what you're trying to do. $\endgroup$ – TheMinecraftMan757 Jan 25 '15 at 22:24
  • 1
    $\begingroup$ I think is is the same as this question (blender.stackexchange.com/q/18601/822) except for edges instead of faces. $\endgroup$ – ajwood Jan 25 '15 at 22:29
  • 1
    $\begingroup$ Currerntly, I don't think there is any easy-and-accurate way to do so. For the specific case, manual adjustment can be acceptable, and almost unnoticable. $\endgroup$ – Leon Cheung Jan 26 '15 at 6:22
  • $\begingroup$ Don't have too much time to experiment on it, but have you tried with bones, inverse kinematics and such ? $\endgroup$ – ChameleonScales Dec 8 '16 at 19:43
4
$\begingroup$

For the specific case, You may consider using cloth simulation to preserve the edge length:

Step 1 to 3: Create Unit; mirror + arrays; Apply modifiers + coloring for convenience. (For existing model, you can ignore above)

Step 4: Select all poked vertices, CtrlG to add to a new vertex group, then CtrlH) to add a hook.

Step 5: Add Cloth simulator. use the vertex group as pins.

Step 6: Scale the hook while simulating (playing animation). Then AltC - 2 to convert the result. Finally, delete all unwanted faces.

enter image description here

enter image description here

Example file

$\endgroup$
  • $\begingroup$ Thank you for your detailed answer. Trying to get my head around this now. $\endgroup$ – noise256 Jan 26 '15 at 21:36
  • 1
    $\begingroup$ OK. I understand the principle here. I'll continue to see if I can get the result I want and post back here. $\endgroup$ – noise256 Jan 26 '15 at 22:11

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.