mdx-m3-viewer/src/viewer/handlers/m3/stc.js

A browser WebGL model viewer. Mainly focused on models of the games Warcraft 3 and Starcraft 2.

import M3SdContainer from './sd';

/**
 * M3 sequence data.
 */
export default class M3Stc {
  /**
   * @param {M3ParserStc} stc
   */
  constructor(stc) {
    const animIds = stc.animIds.getAll();

    this.name = stc.name.getAll().join('');
    this.runsConcurrent = stc.runsConcurrent;
    this.priority = stc.priority;
    this.stsIndex = stc.stsIndex;

    const animRefs = new Uint16Array(stc.animRefs.getAll().buffer);

    this.animRefs = [];

    // Allows direct checks instead of loops
    for (let i = 0, l = animIds.length; i < l; i++) {
      this.animRefs[animIds[i]] = [animRefs[i * 2 + 1], animRefs[i * 2]];
    }

    this.sd = stc.sd.map((sd) => new M3SdContainer(sd.getAll()));
  }

  getValueUnsafe(animRef, instance) {
    const ref = this.animRefs[animRef.animId];

    if (ref) {
      return this.sd[ref[0]].getValueUnsafe(ref[1], animRef, instance.frame, this.runsConcurrent);
    }

    return animRef.initValue;
  }
}