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Restore original camera FOV and Zoom after XR presentation ends #30374

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Restore original camera FOV and Zoom after XR presentation ends #30374

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bd9b321
Restore original camera FOV after XR presentation ends
ramonmata Jan 22, 2025
bc7c13b
Adds new logic to restore camera fov and zoom in WebXRManager
ramonmata Jan 23, 2025
e55b2b9
Updates code to use a weak map
ramonmata Feb 3, 2025
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10 changes: 10 additions & 0 deletions src/renderers/WebGLRenderer.js
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Expand Up @@ -1151,6 +1151,16 @@ class WebGLRenderer {

if ( scene.matrixWorldAutoUpdate === true ) scene.updateMatrixWorld();

// Restore original camera fov

if ( xr.enabled === true && xr.isPresenting === false && camera.userData.previousFov !== undefined ) {

camera.fov = camera.userData.previousFov;
delete camera.userData.previousFov;
camera.updateProjectionMatrix();

}

// update camera matrices and frustum

if ( camera.parent === null && camera.matrixWorldAutoUpdate === true ) camera.updateMatrixWorld();
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6 changes: 6 additions & 0 deletions src/renderers/webxr/WebXRManager.js
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Expand Up @@ -633,6 +633,12 @@ class WebXRManager extends EventDispatcher {

if ( camera.isPerspectiveCamera ) {

if ( camera.userData.previousFov === undefined ) {

camera.userData.previousFov = camera.fov;

}

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Camera fov and zoom should be memoized at the top-level of this class and overriden/restored on sessionstart and sessionend. You will find this for renderer properties, and it would be the same here.

camera.fov = RAD2DEG * 2 * Math.atan( 1 / camera.projectionMatrix.elements[ 5 ] );
camera.zoom = 1;

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