WebCAD/src/Editor/Jig.ts

import { app } from "../ApplicationServices/Application";
import { CADFiler } from "../DatabaseServices/CADFiler";
import { Entity } from "../DatabaseServices/Entity/Entity";
export class Jig
{
    //临时图形,如果需要,将被销毁.
    private m_JigEnts: Entity[] = [];
    //图纸数据缓存,用于还原
    EntityCacheData: { Ent: Entity; File: CADFiler; }[] = [];
    private m_OrgEntitys: Entity[] = [];
    End()
    {
        this.Destroy();
        this.RestoreOriginEntity();
    }
    /**
     * 还原源对象的材质
     */
    RestoreOriginEntity()
    {
        this.m_OrgEntitys.forEach(e => e.RestoreJigMaterial());
        this.EntityCacheData.length = 0;
    }
    /**
     * 将在视图中绘制该对象.
     * 如果该对象已经存在图纸:那么将被拷贝,并且暂时暗显示,并且缓存原始数据,以便还原.
     * @param {Entity} enOrg 源实体
     */
    Draw<T extends Entity>(enOrg: T, fast = false): T
    {
        let enNew: T;
        if (enOrg.Id)
        {
            enNew = enOrg.Clone();
            if (fast)
                enNew.ClearDrawOfJig();
            this.m_OrgEntitys.push(enOrg);
            enOrg.UpdateJigMaterial();
            let f = new CADFiler();
            enNew.WriteFile(f);
            this.EntityCacheData.push({ Ent: enNew, File: f });
        }
        else
            enNew = enOrg;
        this.m_JigEnts.push(enNew);
        let obj = (fast && enNew.JigObject) || enNew.DrawObject;
        app.Viewer.Scene.add(obj);
        return enNew;
    }
    /**
     * 还原拽拖的实体到初始化状态.
     * @memberof Jig
     */
    Restore()
    {
        for (let d of this.EntityCacheData)
        {
            d.File.Reset();
            d.Ent.ReadFile(d.File);
        }
    }
    /**
     * 销毁临时对象,如果临时对象被加入到图纸,那么将不会被销毁.
     */
    Destroy()
    {
        for (let ent of this.m_JigEnts)
        {
            ent.DestroyJigObject();
            if (!ent.Id)
                ent.GoodBye();
        }
        this.m_JigEnts.length = 0;
        app.Editor.UpdateScreen();
    }
}