TextGeometry in Cannon?

[Tzikas]

How would I import a string of text as new CANNON.Body({}) ?

Is that possible? Would I convert text to something like the bunny.js file seen here? http://schteppe.github.io/cannon.js/demos/bunny.html

Thanks.

[schteppe]

Hi, If you want to use the ConvexPolyhedron class, you need to do use something like HACD to decompose the mesh into convex pieces. You could also use the Trimesh shape directly but it has limited collisions... See the collision table.

You could also use simpler shapes to make up efficient approximate collision shapes for your geometry. Like this:

[Tzikas]

How do you use https://github.com/kmammou/v-hacd ? I can't find any clear instructions.

[schteppe]

I never actually used HACD myself, I downloaded the bunny pre-decomposed... Can't help you there.

[Tzikas]

I'm trying to have multiple letters crash into one another. Do you think I could wrap each 3D letter in a box shape and simulate it that way? It doesn't have to be perfect.

[schteppe]

Boxes should be fine I think! Depends on how you will use them.

An other idea: if you don't need bevels on your text mesh, you could probably use a 2d polygon decomposition library and then extrude the convex 2d polygons into 3d shapes. See https://github.com/schteppe/poly-decomp.js

[Tzikas]

I'll look into that, but to be honest I have no idea how to implement it. I'm creating 3D letter using THREE.TextGeometry and THREE.Mesh. How would I insert that obj into a Cannon box ?: var boxShape = new CANNON.Box(new CANNON.Vec3(1,1,1)); var b2 = new CANNON.Body({ mass: 5 }); b2.addShape(boxShape);

[schteppe]

I guess you could get the bounding box from the mesh (see http://stackoverflow.com/questions/15492857/any-way-to-get-a-bounding-box-from-a-three-js-object3d) and then use the size of that box for the Cannon box.

To sync positions and rotations, see https://github.com/schteppe/cannon.js/blob/master/examples/README.markdown#threejs (may be out of date).