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draw halo along water, but not map border

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Azgaar 2021-07-11 00:53:48 +03:00
parent cfb6e1eeeb
commit 805684f79e
1 changed files with 19 additions and 23 deletions
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42
modules/ui/layers.js
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@ -890,10 +890,6 @@ function drawStates() {
const gap = new Array(states.length).fill(""); // path along water for each state to fill the gaps
const halo = new Array(states.length).fill(""); // path around states, but not lakes
// helper functions
const isLand = i => i[1] === "land";
const nextIsLand = (ar, i) => ar[i + 1]?.[1] === "land";
const prevIsLand = (ar, i) => ar[i - 1]?.[1] === "land";
const getStringPoint = v => vertices.p[v[0]].join(",");
// define inner-state lakes to omit on border render
@ -909,37 +905,34 @@ function drawStates() {
if (!cells.state[i] || used[i]) continue;
const state = cells.state[i];
// if (state !== 5) continue;
const onborder = cells.c[i].some(n => cells.state[n] !== state);
if (!onborder) continue;
const borderWith = cells.c[i].map(c => cells.state[c]).find(n => n !== state);
const vertex = cells.v[i].find(v => vertices.c[v].some(i => cells.state[i] === borderWith));
const chain = connectVertices(vertex, state);
if (chain.length < 3) continue;
// get path around state
const points = chain.filter(v => v[1] !== "innerLake").map(v => vertices.p[v[0]]);
const noInnerLakes = chain.filter(v => v[1] !== "innerLake");
if (noInnerLakes.length < 3) continue;
// get path around the state
if (!vArray[state]) vArray[state] = [];
if (points.length) {
vArray[state].push(points);
body[state] += "M" + points.join("L");
}
const points = noInnerLakes.map(v => vertices.p[v[0]]);
vArray[state].push(points);
body[state] += "M" + points.join("L");
// connect path for halo
let discontinued = true;
halo[state] += chain
.map((v, i) => {
if (isLand(v) || nextIsLand(chain, i) || prevIsLand(chain, i)) {
const operation = discontinued ? "M" : "L";
discontinued = false;
return `${operation}${getStringPoint(v)}`;
halo[state] += noInnerLakes
.map(v => {
if (v[1] === "border") {
discontinued = true;
return "";
}
discontinued = true;
return "";
const operation = discontinued ? "M" : "L";
discontinued = false;
return `${operation}${getStringPoint(v)}`;
})
.join("");
@ -947,7 +940,7 @@ function drawStates() {
discontinued = true;
gap[state] += chain
.map(v => {
if (isLand(v)) {
if (v[1] === "land") {
discontinued = true;
return "";
}
@ -982,6 +975,9 @@ function drawStates() {
function connectVertices(start, state) {
const chain = []; // vertices chain to form a path
const getType = c => {
const borderCell = c.find(i => cells.b[i]);
if (borderCell) return "border";
const waterCell = c.find(i => cells.h[i] < 20);
if (!waterCell) return "land";
if (innerLakes[cells.f[waterCell]]) return "innerLake";