WebCAD/src/Add-on/DrawSpline.ts

import { Vector3 } from 'three';
import { app } from '../ApplicationServices/Application';
import { Spline } from '../DatabaseServices/Spline';
import { Command } from '../Editor/CommandMachine';
import { PromptStatus } from '../Editor/PromptResult';


export class DrawSpline implements Command
{
    async exec()
    {
        app.m_Editor.m_CommandStore.Prompt("请输入一个点:");
        let ptRes = await app.m_Editor.GetPoint({ Msg: "请输入第一个点:" });
        if (ptRes.Status != PromptStatus.OK)
            return;
        let ptLast = ptRes.Value;

        let pts: Vector3[] = [ptLast];

        let spline = new Spline(pts);

        while (true)
        {
            ptLast = ptLast.clone();
            pts.push(ptLast);
            if (pts.length === 2)
            {
                app.m_Database.ModelSpace.Append(spline);
            }
            app.m_Editor.m_CommandStore.Prompt("请输入点2:");
            ptRes = await app.m_Editor.GetPoint({
                Msg: "请输入点2:",
                BasePoint: ptLast,
                AllowDrawRubberBand: true,
                KeyWordList: [{ msg: "放弃", key: "U" }],
                Callback: (v) =>
                {
                    ptLast.copy(v);
                    spline.Points = pts;
                }
            });

            if (ptRes.Status == PromptStatus.OK)
            {
                ptLast = ptRes.Value;
                continue;
            }
            else
            {
                break;
            }
        }
    }
}