THREE.js camera aspect / FOV

🧑‍💻 Technical Support
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1

Using THREE.js with XR8.Threejs.pipelineModule() or customThreejsPipelineModule (from XR Web github), it’s not possible to use camera.aspect or camera.fov, as these value are never updated.
camera.aspect always equals 2 and camera.fov always equals 60.

Looking at the code for the three.js pipeline module’s onUpdate() function, it looks like 8th Wall is updating the camera projection matrix directly:

for (let i = 0; i < 16; i++) {
    camera.projectionMatrix.elements[i] = intrinsics[i];
}

But this doesn’t update camera.aspect or camera.fov, so any calculations relying on these are broken - they need to be calculated from the projection matrix directly.

2

Thanks for the heads up, I’ll forward this to our engineering team.