Method clamp

docs/app/js/sanddance-app.js:69319–69322

(minVector, maxVector)

        return this.check();
    }
    clamp(minVector, maxVector) {
        for(let i = 0; i < this.ELEMENTS; ++i)this[i] = Math.min(Math.max(this[i], minVector[i]), maxVector[i]);
        return this.check();
    }
    add(...vectors) {
        for (const vector of vectors)for(let i = 0; i < this.ELEMENTS; ++i)this[i] += vector[i];
        return this.check();