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refactor river fendering

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Azgaar 2021-07-20 00:20:04 +03:00
parent 6405b442a5
commit 0adc0e883a
6 changed files with 187 additions and 149 deletions
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12
main.js
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@ -1299,6 +1299,15 @@ function reMarkFeatures() {
cells.haven = cells.i.length < 65535 ? new Uint16Array(cells.i.length) : new Uint32Array(cells.i.length); // cell haven (opposite water cell);
cells.harbor = new Uint8Array(cells.i.length); // cell harbor (number of adjacent water cells);
const defineHaven = i => {
const water = cells.c[i].filter(c => cells.h[c] < 20);
const dist2 = water.map(c => (cells.p[i][0] - cells.p[c][0]) ** 2 + (cells.p[i][1] - cells.p[c][1]) ** 2);
const closest = water[dist2.indexOf(Math.min.apply(Math, dist2))];
cells.haven[i] = closest;
cells.harbor[i] = water.length;
};
for (let i = 1, queue = [0]; queue[0] !== -1; i++) {
const start = queue[0]; // first cell
cells.f[start] = i; // assign feature number
@ -1314,8 +1323,7 @@ function reMarkFeatures() {
if (land && !eLand) {
cells.t[q] = 1;
cells.t[e] = -1;
cells.harbor[q]++;
if (!cells.haven[q]) cells.haven[q] = e;
if (!cells.haven[q]) defineHaven(q);
} else if (land && eLand) {
if (!cells.t[e] && cells.t[q] === 1) cells.t[e] = 2;
else if (!cells.t[q] && cells.t[e] === 1) cells.t[q] = 2;