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allow to add river - fix

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Azgaar 2021-07-20 01:31:48 +03:00
parent 4523e90551
commit 76c787b6e9
2 changed files with 37 additions and 28 deletions
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51
modules/ui/tools.js
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@ -538,8 +538,9 @@ function addRiverOnClick() {
if (cells.h[i] < 20) return tip("Cannot create river in water cell", false, "error");
if (cells.b[i]) return;
const riverPoints = [];
const riverCells = [];
let riverId = +getNextId("river").slice(5);
let parent = 0;
const initialFlux = grid.cells.prec[cells.g[i]];
cells.fl[i] = initialFlux;
@ -549,8 +550,7 @@ function addRiverOnClick() {
while (i) {
cells.r[i] = riverId;
const [x, y] = cells.p[i];
riverPoints.push({x, y, cell: i});
riverCells.push(i);
const min = cells.c[i].sort((a, b) => h[a] - h[b])[0]; // downhill cell
if (h[i] <= h[min]) return tip(`Cell ${i} is depressed, river cannot flow further`, false, "error");
@ -559,16 +559,23 @@ function addRiverOnClick() {
// pour to water body
if (h[min] < 20) {
riverPoints.push({x: tx, y: ty, cell: i});
riverCells.push(min);
const feature = pack.features[cells.f[min]];
if (feature.type === "lake") {
riverPoints[0].parent = feature.outlet || 0;
parent = feature.outlet || 0;
feature.inlets ? feature.inlets.push(riverId) : (feature.inlets = [riverId]);
}
break;
}
// pour outside of map from border cell
if (cells.b[min]) {
cells.fl[min] += cells.fl[i];
riverCells.push(-1);
break;
}
// continue propagation if min cell has no river
if (!cells.r[min]) {
cells.fl[min] += cells.fl[i];
@ -578,24 +585,28 @@ function addRiverOnClick() {
// handle case when lowest cell already has a river
const oldRiverId = cells.r[min];
const riverCells = cells.i.filter(i => cells.r[i] === oldRiverId);
const riverCellsUpper = riverCells.filter(i => h[i] > h[min]);
const oldRiver = rivers.find(river => river.i === oldRiverId);
const oldRiverCells = oldRiver?.cells || cells.i.filter(i => cells.r[i] === oldRiverId);
const oldRiverCellsUpper = oldRiverCells.filter(i => h[i] > h[min]);
// create new river as a tributary
if (riverPoints.length <= riverCellsUpper.length) {
if (riverCells.length <= oldRiverCellsUpper.length) {
cells.conf[min] += cells.fl[i];
riverPoints.push({x: tx, y: ty, cell: min});
riverPoints[0].parent = oldRiverId;
riverCells.push(min);
parent = oldRiverId;
break;
}
// continue old river
document.getElementById("river" + oldRiverId)?.remove();
cells.i.filter(i => cells.r[i] === riverId).forEach(i => (cells.r[i] = oldRiverId));
const oldRiver = rivers.find(river => river.i === oldRiverId);
oldRiver?.points.forEach(([x, y, cell]) => {
riverPoints.push({x, y, cell});
cells.fl[cell] += cells.fl[i];
riverCells.forEach(i => (cells.r[i] = oldRiverId));
oldRiverCells.forEach(cell => {
if (h[cell] > h[min]) {
cells.r[cell] = 0;
} else {
riverCells.push(cell);
cells.fl[cell] += cells.fl[i];
}
});
riverId = oldRiverId;
@ -604,9 +615,8 @@ function addRiverOnClick() {
const river = rivers.find(r => r.i === riverId);
const sourceWidth = 0.1;
const widthFactor = river.widthFactor || rn(0.8 + Math.random() * 0.4, 1);
const widthFactor = river?.widthFactor || rn(0.8 + Math.random() * 0.4, 1);
const riverCells = riverPoints.map(point => point.cell);
const riverMeandered = Rivers.addMeandering(riverCells, sourceWidth * 10, 0.5);
const [path, length, offset] = Rivers.getPath(riverMeandered, widthFactor, sourceWidth);
viewbox
@ -616,8 +626,8 @@ function addRiverOnClick() {
.attr("id", "river" + riverId);
// add new river to data or change extended river attributes
const source = riverPoints[0].cell;
const mouth = last(riverPoints).cell;
const source = riverCells[0];
const mouth = last(riverCells);
const discharge = cells.fl[mouth]; // in m3/s
const width = rn(offset ** 2, 2); // mounth width in km
@ -626,9 +636,8 @@ function addRiverOnClick() {
river.length = length;
river.discharge = discharge;
river.width = width;
river.points = points;
river.cells = riverCells;
} else {
const parent = riverPoints[0].parent || 0;
const basin = Rivers.getBasin(parent);
const name = Rivers.getName(mouth);
const smallLength = rivers.map(r => r.length || 0).sort((a, b) => a - b)[Math.ceil(pack.rivers.length * 0.15)];