@visactor/vrender-animate/es/ticker/manual-ticker.js

This module provides a graph-based animation system for VRender.

import { STATUS } from "@visactor/vrender-core";

import { DefaultTicker } from "./default-ticker";

class ManualTickHandler {
    constructor() {
        this.released = !1, this.currentTime = -1;
    }
    tick(interval, cb) {
        this.currentTime < 0 && (this.currentTime = 0), this.currentTime += interval, cb(this);
    }
    release() {
        this.released = !0;
    }
    getTime() {
        return this.currentTime;
    }
    tickTo(time, cb) {
        this.currentTime < 0 && (this.currentTime = 0);
        const interval = time - this.currentTime;
        this.tick(interval, cb);
    }
}

export class ManualTicker extends DefaultTicker {
    constructor(stage) {
        super(stage), this.lastFrameTime = 0, this.status = STATUS.RUNNING;
    }
    setupTickHandler() {
        const handler = new ManualTickHandler;
        return this.tickerHandler && this.tickerHandler.release(), this.tickerHandler = handler, 
        !0;
    }
    checkSkip(delta) {
        return !1;
    }
    getTime() {
        return this.tickerHandler.getTime();
    }
    tickAt(time) {
        this.tickTo(time);
    }
    start(force = !1) {
        if (this.status === STATUS.RUNNING) return !1;
        if (!this.tickerHandler) return !1;
        if (!force) {
            if (this.status === STATUS.PAUSE) return !1;
            if (this.ifCanStop()) return !1;
        }
        return this.status = STATUS.RUNNING, !0;
    }
}
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