playcanvas/build/playcanvas.dbg/src/framework/anim/evaluator/anim-snapshot.js

PlayCanvas WebGL game engine

import { AnimCache } from './anim-cache.js';

/**
 * @import { AnimTrack } from './anim-track.js'
 */ /**
 * AnimSnapshot stores the state of an animation track at a particular time.
 *
 * @ignore
 */ class AnimSnapshot {
    /**
     * Create a new animation snapshot.
     *
     * @param {AnimTrack} animTrack - The source track.
     */ constructor(animTrack){
        this._name = "" + animTrack.name + "Snapshot";
        this._time = -1;
        // per-curve input cache
        this._cache = [];
        // per-curve evaluation results
        this._results = [];
        // pre-allocate input caches
        for(var i = 0; i < animTrack._inputs.length; ++i){
            this._cache[i] = new AnimCache();
        }
        // pre-allocate storage for evaluation results
        var curves = animTrack._curves;
        var outputs = animTrack._outputs;
        for(var i1 = 0; i1 < curves.length; ++i1){
            var curve = curves[i1];
            var output = outputs[curve._output];
            var storage = [];
            for(var j = 0; j < output._components; ++j){
                storage[j] = 0;
            }
            this._results[i1] = storage;
        }
    }
}

export { AnimSnapshot };