@openhps/core/dist/esm/three/core/InstancedInterleavedBuffer.js

Open Hybrid Positioning System - Core component

import { InterleavedBuffer } from './InterleavedBuffer.js';

/**
 * An instanced version of an interleaved buffer.
 *
 * @augments InterleavedBuffer
 */
class InstancedInterleavedBuffer extends InterleavedBuffer {
  /**
   * Constructs a new instanced interleaved buffer.
   *
   * @param {TypedArray} array - A typed array with a shared buffer storing attribute data.
   * @param {number} stride - The number of typed-array elements per vertex.
   * @param {number} [meshPerAttribute=1] - Defines how often a value of this interleaved buffer should be repeated.
   */
  constructor(array, stride, meshPerAttribute = 1) {
    super(array, stride);

    /**
     * This flag can be used for type testing.
     *
     * @type {boolean}
     * @readonly
     * @default true
     */
    this.isInstancedInterleavedBuffer = true;

    /**
     * Defines how often a value of this buffer attribute should be repeated,
     * see {@link InstancedBufferAttribute#meshPerAttribute}.
     *
     * @type {number}
     * @default 1
     */
    this.meshPerAttribute = meshPerAttribute;
  }
  copy(source) {
    super.copy(source);
    this.meshPerAttribute = source.meshPerAttribute;
    return this;
  }
  clone(data) {
    const ib = super.clone(data);
    ib.meshPerAttribute = this.meshPerAttribute;
    return ib;
  }
  toJSON(data) {
    const json = super.toJSON(data);
    json.isInstancedInterleavedBuffer = true;
    json.meshPerAttribute = this.meshPerAttribute;
    return json;
  }
}
export { InstancedInterleavedBuffer };