Get heights from generated terrain

[nrbrttth]

Hello and thanks for this amazing library!

I want to add a physics collider for Rapier, but I have no idea how could I parse the heights from the generated terrain.
Rapier expects it as described:

"A 3D heightfield collider can be created with ColliderDesc.heightfield(heights, scale) where heights is a matrix indicating the altitude of each subdivision point of that heightfield. The number of rows of that matrix is the number of subdivision along the X axis, and the number of columns is the number of subdivision along the Z axis. The scale argument indicates the size of the rectangle of the X-Z plane."

Have anyone tackled this before?

[IceCreamYou]

Hi there, I haven't used Rapier before but for the heights you are probably looking for something like THREE.Terrain.toArray2D(terrainScene.children[0].geometry.attributes.position.array) (where terrainScene.children[0] is your terrain mesh). From context I'm not entirely sure what the scale argument is supposed to be, but it is probably related to the xSize/ySize options you pass to THREE.Terrain().