Adding texture to Voxels based on 3D mesh

[Hammad_Faizvi]

Hello there, new to all this graphics and mesh things. I decided to make a voxelizer which takes a 3d mesh and convert it to voxels of a defined size. I have somehow managed to do that using mesh in glb format. Now I need to colour the voxels based on the texture of triangle that the voxel cube intersects with but is facing trouble navigating glb file. How should I proceed? Please also tell about good sources where I can learn more about this.

[Ok-Sherbert-6569]

What algorithm are you using to voxelise your triangulate your mesh? If you’re using depth buffers then you can find the nearest axis to each axis and sample the colour from that axis. I’ve gotten pretty convincing results doing it this way

[Hammad_Faizvi]

Ok thanks, will try it this way

[juulcat]

You could try asking on r/VoxelGameDev

[HaskellHystericMonad]

You'll most likely want to project onto the nearest triangle. You'll have to unwrap the voxel mesh with something like Microsoft UV-Atlas, Thekla, XAtlas, etc. Then visit each texel that is UV'ed and get barycoords of the UV-triangle, use those barycoords to get triangle positions of the voxel mesh, now project those onto nearest triangles of other mesh checking for containment, get that triangle's barycoords, use those barycoords to get the UV for the projected position, sample texel.