//之前存的是宽高坐标
function changeCoorinate(x,y,w,h){
const WORLD_WIDTH = 20037508.3427892;
const maxZoom = Math.ceil(Math.log(Math.max(w, h) / 256) / Math.log(2));
const worldWidth = Math.pow(2, maxZoom) * 256;
const projWidth = WORLD_WIDTH * (w / worldWidth);
const projHeight = WORLD_WIDTH * (h / worldWidth);
// const x1 = projWidth * (x/w);
// const y1 = projHeight * (y/h);
const x1 = WORLD_WIDTH * (x/worldWidth);
const y1 = WORLD_WIDTH * (y/worldWidth);
return {
"XPos": x1,
"YPos": y1
}
}
//864 * 768
//1024 * 768
const r = changeCoorinate(-172,-609,864,768);
console.log(r)
//{"XPos":-6026906.806229563,"YPos":-2211170.3542335737}
//{"XPos":-13345293.642365463,"YPos":-4402772.829226142}
// {"XPos":-3365675.229452873,"YPos":-11916838.457772091}
console