import { _decorator, Component, Size, Rect, Vec2, Vec3 } from 'cc';
const { ccclass, property } = _decorator;

// 画网格，个工具类
export class GridDraw {
    // 默认右下角，是0，0，返回的坐标，为网格中点
    drawGrid(rect:Rect,size:Size,offset:Vec2 =new Vec2(0.5,0.5)):Vec3[][]{
        let w = rect.width / size.width;
        let h = rect.height / size.height;
        let offset_x = w*offset.x+rect.x
        let offset_y = h*offset.y+rect.y
        let res :Vec3[][] = [[]]
        for (let i = 0; i < size.height; i++) {
            for (let j = 0; j < size.width; j++) {
                if(!res[i]){
                    res[i] = [];
                }
                res[i][j] = new Vec3(j *w +offset_x, i * h + offset_y , 0);
            }
        }
        return res;
    }
   
}
export const gridDraw = new GridDraw()