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@@ -99,16 +99,21 @@ THREE.DirectionalLightHelper.prototype.update = function () {
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this.lightSphere.material.color.copy( this.color );
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this.lightRays.material.color.copy( this.color );
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- this.targetSphere.material.color.copy( this.color );
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- this.targetLine.material.color.copy( this.color );
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+ // Only update targetSphere and targetLine if available
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+ if ( this.targetSphere ) {
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- // update target line vertices
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+ this.targetSphere.material.color.copy( this.color );
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+ this.targetLine.material.color.copy( this.color );
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- this.targetLine.geometry.vertices[ 0 ].copy( this.light.position );
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- this.targetLine.geometry.vertices[ 1 ].copy( this.light.target.position );
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+ // update target line vertices
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- this.targetLine.geometry.computeLineDistances();
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- this.targetLine.geometry.verticesNeedUpdate = true;
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+ this.targetLine.geometry.vertices[ 0 ].copy( this.light.position );
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+ this.targetLine.geometry.vertices[ 1 ].copy( this.light.target.position );
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+
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+ this.targetLine.geometry.computeLineDistances();
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+ this.targetLine.geometry.verticesNeedUpdate = true;
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+
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+ }
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}
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