backups/Fantasy-Map-Generator
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Merge branch 'master' into dev-submaps

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Mészáros Gergely 2021-09-08 12:43:23 +02:00
commit 0a7218db99
24 changed files with 904 additions and 515 deletions
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12
modules/river-generator.js
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@ -39,7 +39,7 @@ window.Rivers = (function () {
const lakeOutCells = Lakes.setClimateData(h);
land.forEach(function (i) {
cells.fl[i] += prec[cells.g[i]] * area(i) / 1000; // add flux from precipitation
cells.fl[i] += (prec[cells.g[i]] * area[i]) / 100; // add flux from precipitation
// create lake outlet if lake is not in deep depression and flux > evaporation
const lakes = lakeOutCells[i] ? features.filter(feature => i === feature.outCell && feature.flux > feature.evaporation) : [];
@ -170,7 +170,7 @@ window.Rivers = (function () {
const widthFactor = (!parent || parent === riverId ? 3.6 : 3) / distanceScale;
const meanderedPoints = addMeandering(riverCells);
const discharge = cells.fl[mouth]; // m3 in second
const length = rn(getApproximateLength(meanderedPoints), 2);
const length = getApproximateLength(meanderedPoints);
const width = getWidth(getOffset(discharge, meanderedPoints.length, widthFactor, 0));
pack.rivers.push({i: riverId, source, mouth, discharge, length, width, widthFactor, sourceWidth: 0, parent, cells: riverCells});
@ -320,9 +320,10 @@ window.Rivers = (function () {
};
const getRiverPoints = (riverCells, riverPoints) => {
if (riverPoints) return riverPoints;
const {p} = pack.cells;
return riverCells.map((cell, i) => {
if (riverPoints && riverPoints[i]) return riverPoints[i];
if (cell === -1) return getBorderPoint(riverCells[i - 1]);
return p[cell];
});
@ -415,7 +416,10 @@ window.Rivers = (function () {
return rw(riverTypes[isFork ? "fork" : "main"][isSmall ? "small" : "big"]);
};
const getApproximateLength = points => points.reduce((s, v, i, p) => s + (i ? Math.hypot(v[0] - p[i - 1][0], v[1] - p[i - 1][1]) : 0), 0);
const getApproximateLength = points => {
const length = points.reduce((s, v, i, p) => s + (i ? Math.hypot(v[0] - p[i - 1][0], v[1] - p[i - 1][1]) : 0), 0);
return rn(length, 2);
};
// Real mouth width examples: Amazon 6000m, Volga 6000m, Dniepr 3000m, Mississippi 1300m, Themes 900m,
// Danube 800m, Daugava 600m, Neva 500m, Nile 450m, Don 400m, Wisla 300m, Pripyat 150m, Bug 140m, Muchavets 40m