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@@ -4,6 +4,7 @@ import { PerspectiveCamera } from './PerspectiveCamera.js';
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const _eyeRight = /*@__PURE__*/ new Matrix4();
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const _eyeLeft = /*@__PURE__*/ new Matrix4();
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+const _projectionMatrix = /*@__PURE__*/ new Matrix4();
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class StereoCamera {
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@@ -56,7 +57,7 @@ class StereoCamera {
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// Off-axis stereoscopic effect based on
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// http://paulbourke.net/stereographics/stereorender/
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- const projectionMatrix = camera.projectionMatrix.clone();
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+ _projectionMatrix.copy( camera.projectionMatrix );
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const eyeSepHalf = cache.eyeSep / 2;
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const eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;
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const ymax = ( cache.near * Math.tan( MathUtils.DEG2RAD * cache.fov * 0.5 ) ) / cache.zoom;
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@@ -72,20 +73,20 @@ class StereoCamera {
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xmin = - ymax * cache.aspect + eyeSepOnProjection;
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xmax = ymax * cache.aspect + eyeSepOnProjection;
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- projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
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- projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
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+ _projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
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+ _projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
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- this.cameraL.projectionMatrix.copy( projectionMatrix );
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+ this.cameraL.projectionMatrix.copy( _projectionMatrix );
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// for right eye
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xmin = - ymax * cache.aspect - eyeSepOnProjection;
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xmax = ymax * cache.aspect - eyeSepOnProjection;
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- projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
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- projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
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+ _projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
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+ _projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
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- this.cameraR.projectionMatrix.copy( projectionMatrix );
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+ this.cameraR.projectionMatrix.copy( _projectionMatrix );
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}
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WestLangley