/examples/prime-numbers.js 感觉不太对的样子

[std-microblock]

import * as mo from "movy";

const gridSize = [21, 12];

mo.enableMotionBlur();

let n = 1;
for (let i = 1; i < gridSize[1]; i++) {
    for (let j = 1; j < gridSize[0]; j++) {
        const prime = isPrime(n);
        const position = [j, -i];

        mo.addText(n.toString(), {
            position: position.concat([0]),
            scale: 0.3,
            color: "white",
        });

        mo.addRectOutline({ position, lineWidth: 0.03 });

        if (prime) {
            mo.addRect({ position: position.concat([0.01]), color: "#fad390" }).grow2({
                t: "<0.1",
            });
            mo.addText(n.toString(), {
                position: position.concat([0.02]),
                scale: 0.3,
                color: "black"
            }).grow2({
                t: "<0.1",
            });
        }

        n++;
    }
}

mo.cameraMoveTo({ position: [3, -3, 5], rx: 0.2, duration: 0, t: 0 });
mo.cameraMoveTo({
    position: [gridSize[0] * 0.5, -gridSize[1] * 0.5, 10],
    rx: 0,
    t: "<",
    duration: 10,
});

mo.run();

function isPrime(num) {
    for (let i = 2, s = Math.sqrt(num); i <= s; i++)
        if (num % i === 0) return false;
    return num > 1;
}

改成这样？不然一开始不会显示质数，有点水（