use PlaneBufferGeometry with rotated X by -90° instead of BoxBufferGeometry #29
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To be able to work with raycaster, you need to rotate the geometry, not the mesh.
With mesh rotation, you get
intersects[0].face.normal= x: 0 y: 0: z: 1 and so your isValidNormalsAngle function returns false.With the geometry rotation you get
intersects[0].face.normalx: 0, y: 1, z: 1 and isValidNormalsAngle returns true.I'll do a similar PR to aframe-environment-component, the generated ground geometry is currently a plane with a mesh rotation. If I do a similar fix and rotate the geometry and not the meshs, I can teleport on the hills! So much fun. :)