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104 lines
2.3 KiB
104 lines
2.3 KiB
6 months ago
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import {
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DynamicDrawUsage,
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SphereGeometry,
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BoxGeometry,
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MeshStandardMaterial,
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InstancedMesh,
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Matrix4,
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Vector3
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} from 'three';
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const _matrix = new Matrix4();
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const _vector = new Vector3();
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class XRHandPrimitiveModel {
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constructor( handModel, controller, path, handedness, options ) {
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this.controller = controller;
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this.handModel = handModel;
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this.envMap = null;
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let geometry;
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if ( ! options || ! options.primitive || options.primitive === 'sphere' ) {
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geometry = new SphereGeometry( 1, 10, 10 );
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} else if ( options.primitive === 'box' ) {
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geometry = new BoxGeometry( 1, 1, 1 );
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}
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const material = new MeshStandardMaterial();
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this.handMesh = new InstancedMesh( geometry, material, 30 );
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this.handMesh.frustumCulled = false;
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this.handMesh.instanceMatrix.setUsage( DynamicDrawUsage ); // will be updated every frame
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this.handMesh.castShadow = true;
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this.handMesh.receiveShadow = true;
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this.handModel.add( this.handMesh );
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this.joints = [
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'wrist',
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'thumb-metacarpal',
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'thumb-phalanx-proximal',
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'thumb-phalanx-distal',
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'thumb-tip',
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'index-finger-metacarpal',
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'index-finger-phalanx-proximal',
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'index-finger-phalanx-intermediate',
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'index-finger-phalanx-distal',
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'index-finger-tip',
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'middle-finger-metacarpal',
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'middle-finger-phalanx-proximal',
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'middle-finger-phalanx-intermediate',
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'middle-finger-phalanx-distal',
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'middle-finger-tip',
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'ring-finger-metacarpal',
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'ring-finger-phalanx-proximal',
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'ring-finger-phalanx-intermediate',
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'ring-finger-phalanx-distal',
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'ring-finger-tip',
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'pinky-finger-metacarpal',
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'pinky-finger-phalanx-proximal',
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'pinky-finger-phalanx-intermediate',
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'pinky-finger-phalanx-distal',
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'pinky-finger-tip'
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];
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}
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updateMesh() {
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const defaultRadius = 0.008;
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const joints = this.controller.joints;
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let count = 0;
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for ( let i = 0; i < this.joints.length; i ++ ) {
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const joint = joints[ this.joints[ i ] ];
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if ( joint.visible ) {
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_vector.setScalar( joint.jointRadius || defaultRadius );
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_matrix.compose( joint.position, joint.quaternion, _vector );
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this.handMesh.setMatrixAt( i, _matrix );
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count ++;
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}
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}
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this.handMesh.count = count;
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this.handMesh.instanceMatrix.needsUpdate = true;
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}
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}
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export { XRHandPrimitiveModel };
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