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Outlets afterwards
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CanisArtorus
parent
0c7bd9f1ae
commit
453300f99d
1 changed files with 68 additions and 60 deletions
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@ -35,70 +35,46 @@
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void function drainWater() {
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const land = cells.i.filter(i => h[i] >= 20).sort((a,b) => h[b] - h[a]);
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const lakes = features.filter(f => f.type === "lake" && f.group === "freshwater");
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const lakeHeights = lakes.map(l => l.height).sort((a,b) => b - a);
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const used = [0];
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const lakes = features.filter(f => f.type === "lake" && f.group === "freshwater").sort((a,b) => b.height - a.height);
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const flowDown = function(min, iFlux, ri, wetCB = (iFlux, ri, nx, ny) => {}){
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const flowDown = function(min, mFlux, iFlux, ri, i = 0,
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wetCB = (iFlux, ri, nx, ny, i) => {
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// pour water to the sea haven
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riversData.push({river: ri, cell: cells.haven[i], x: nx, y: ny});
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const mf = features[cells.f[min]]; // feature of min cell
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if (mf.type === "lake") {
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if (!mf.river || iFlux > mf.flux) {
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mf.river = ri; // pour water to temporaly elevated lake
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mf.flux = iFlux; // entering flux
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}
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mf.totalFlux += iFlux;
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}
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}){
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let terminus = false;
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if (cells.r[min]) { // downhill cell already has river assigned
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if (cells.fl[min] < iFlux) {
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if (mFlux < iFlux) {
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cells.conf[min] = cells.fl[min]; // mark confluence
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if (h[min] >= 20) riversData.find(r => r.river === cells.r[min]).parent = ri; // min river is a tributary of current river
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cells.r[min] = ri; // re-assign river if downhill part has less flux
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} else {
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cells.conf[min] += iFlux; // mark confluence
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if (h[min] >= 20) riversData.find(r => r.river === ri).parent = cells.r[min]; // current river is a tributary of min river
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terminus = true;
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}
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} else cells.r[min] = ri; // assign the river to the downhill cell
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const nx = p[min][0], ny = p[min][1];
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if (h[min] < 20) {
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wetCB(iFlux, ri, nx, ny);
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wetCB(iFlux, ri, nx, ny, i);
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terminus = true;
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} else {
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cells.fl[min] += iFlux; // propagate flux
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riversData.push({river: ri, cell: min, x: nx, y: ny}); // add next River segment
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}
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};
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return terminus;
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}
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land.forEach(function(i) {
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while (lakeHeights && h[i] <= lakeHeights[0]){ // drain lakes first
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const lh = lakeHeights.shift();
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const l = lakes.find(lk => lk.height === lh);
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let outlet = 0;
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if (l.shoreline) {
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outlet = l.shoreline[d3.scan(l.shoreline, (a,b) => h[a] - h[b])];
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} else {
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WARN && console.warn('Re-scanning shoreline of a lake');
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const shallows = cells.i.filter(j => cells.t[j] === -1 && cells.f[j] === l.i);
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let shoreline = l.firstCell - 1;
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shallows.map(w => cells.c[w]).forEach(cList => shoreline += cList);
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outlet = shoreline[d3.scan(shoreline, (a,b) => h[a] - h[b])];
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}
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outlet = outlet ? outlet : l.firstCell - 1; // existance guarentee
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let ri = l.river
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if(l.cells > 1) {
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const j = cells.haven[outlet];
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// if (features[cells.f[i]].totalFlux > l.flux * 2) {
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ri = ++riverNext;
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// } else {
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//TODO String the river along to the exit
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// }
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// assign river to come out of the lake
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cells.r[j] = ri;
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riversData.push({river: ri, cell: j, x: p[j][0], y: p[j][1]});
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}
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flowDown(outlet, features[l.i].totalFlux, ri);
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// two segments, so it doesn't return-stub
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// lowest land neighbour
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let next = cells.c[outlet].filter(c => h[c] >= 20).sort((a,b) => h[a] - h[b])[0];
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flowDown(next, cells.fl[outlet], cells.r[outlet]);
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used.push(outlet); // is already done
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delete l.shoreline; // cleanup temp passed data
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}
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if (used.includes(i)) { return; }
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cells.fl[i] += grid.cells.prec[cells.g[i]]; // flux from precipitation
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const x = p[i][0], y = p[i][1];
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@ -116,8 +92,8 @@
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return;
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}
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//const min = cells.c[i][d3.scan(cells.c[i], (a, b) => h[a] - h[b])]; // downhill cell
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let min = cells.c[i][d3.scan(cells.c[i], (a, b) => h[a] - h[b])]; // downhill cell
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const min = cells.c[i][d3.scan(cells.c[i], (a, b) => h[a] - h[b])]; // downhill cell
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// let min = cells.c[i][d3.scan(cells.c[i], (a, b) => h[a] - h[b])]; // downhill cell
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if (cells.fl[i] < 30) {
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if (h[min] >= 20) cells.fl[min] += cells.fl[i];
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@ -131,20 +107,52 @@
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riverNext++;
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}
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flowDown(min, cells.fl[i], cells.r[i], (iFlux, ri, nx, ny) => {
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// pour water to the sea haven
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riversData.push({river: ri, cell: cells.haven[i], x: nx, y: ny});
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const mf = features[cells.f[min]]; // feature of min cell
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if (mf.type === "lake") {
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if (!mf.river || iFlux > mf.flux) {
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mf.river = ri; // pour water to temporaly elevated lake
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mf.flux = iFlux; // entering flux
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}
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mf.totalFlux += iFlux;
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}
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});
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flowDown(min, cells.fl[min], cells.fl[i], cells.r[i], i);
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});
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lakes.forEach( l => { // drain lakes
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const lakeFlux = features[l.i].totalFlux;
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let outlet = 0;
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if (l.shoreline) {
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outlet = l.shoreline[d3.scan(l.shoreline, (a,b) => h[a] - h[b])];
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} else {
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WARN && console.warn('Re-scanning shoreline of a lake');
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const shallows = cells.i.filter(j => cells.t[j] === -1 && cells.f[j] === l.i);
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let shoreline = l.firstCell - 1;
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shallows.map(w => cells.c[w]).forEach(cList => shoreline += cList);
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outlet = shoreline[d3.scan(shoreline, (a,b) => h[a] - h[b])];
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}
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if (!outlet) return; // depressed lake is endorheic
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let ri = l.river
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if(l.cells > 1) {
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const j = cells.haven[outlet];
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// if (features[cells.f[i]].totalFlux > l.flux * 2) {
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ri = ++riverNext;
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// } else {
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//TODO String the river along to the exit
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// }
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// assign river to come out of the lake
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cells.r[j] = ri;
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riversData.push({river: ri, cell: j, x: p[j][0], y: p[j][1]});
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}
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flowDown(outlet, cells.fl[outlet], lakeFlux, ri, 0, (a,b,c,d) => {});
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// two segments, so it doesn't return-stub
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// lowest land neighbour
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let next = cells.c[outlet].filter(c => h[c] >= 20).sort((a,b) => h[a] - h[b])[0];
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flowDown(next, cells.fl[next], cells.fl[outlet], cells.r[outlet], outlet, (a,b,c,d) => {});
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// Keep going all the way
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let min = cells.c[next][d3.scan(cells.c[next], (a,b) => h[a] - h[b])];
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while (h[min] >= 20){
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let i = min;
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min = cells.c[i][d3.scan(cells.c[i], (a,b) => h[a] - h[b])];
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if (flowDown(min, cells.conf[min] ? cells.fl[min] - cells.conf[min] : cells.fl[min], lakeFlux, ri, i))
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break;
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}
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delete l.shoreline; // cleanup temp passed data
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});
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}()
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void function defineRivers() {
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