Function erosionRate

terrain.js:370–382

(h)

}

function erosionRate(h) {
    var flux = getFlux(h);
    var slope = getSlope(h);
    var newh = zero(h.mesh);
    for (var i = 0; i < h.length; i++) {
        var river = Math.sqrt(flux[i]) * slope[i];
        var creep = slope[i] * slope[i];
        var total = 1000 * river + creep;
        total = total > 200 ? 200 : total;
        newh[i] = total;
    }
    return newh;
}

function erode(h, amount) {
    var er = erosionRate(h);