import { Font, FontLoader, Matrix4, Mesh, Shape, ShapeGeometry, Vector3 } from "three";
import { ColorMaterial } from "./ColorPalette";
import { MoveMatrix } from "./GeUtils";
import { XAxis, XAxisN, YAxis, YAxisN, ZAxisN } from "./Utils";

class FontLoaderUtil
{
    private static defFont: Font;
    static Load(): Font
    {
        if (!this.defFont)
        {
            const f = require("../resources/fonts/helvetiker_regular.typeface.json");
            let loader = new FontLoader();
            this.defFont = loader.parse(f);
        }
        return this.defFont;
    }
}

export class DbText extends Mesh
{
    /**
     *
     * 构造一个文本对象,8位点(中心点下面)在0点
     * @param {string} str 数字字符串
     * @param {number} height 文本高度
     * @memberof DbText
     */
    constructor(str: string, height: number = 5)
    {
        let font = FontLoaderUtil.Load();

        let shapes: Shape[] = font.generateShapes(str, height);
        let geometry = new ShapeGeometry(shapes);

        geometry.computeBoundingBox();

        super(geometry, ColorMaterial.GetBasicMaterial(5));

        let center = geometry.boundingBox.getCenter(new Vector3());
        this.applyMatrix4(MoveMatrix(new Vector3(-center.x, 0, 0)));
    }

    CreateDoubleMesh(IsFsText: boolean)
    {
        let mesh2 = new Mesh(this.geometry, ColorMaterial.GetBasicMaterial(5));
        //左右视图时应该这样,俯视图是X,-Y,-Z(y+=(xxx)
        if (IsFsText)
        {
            mesh2.applyMatrix4(new Matrix4().makeBasis(XAxis, YAxisN, ZAxisN));
        }
        else
        {
            mesh2.applyMatrix4(new Matrix4().makeBasis(XAxisN, YAxis, ZAxisN));
        }
        this.add(mesh2);
    }
}