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feat: render states - separate pole detection from layer render

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Azgaar 2024-09-02 03:23:05 +02:00
parent 093014088c
commit c66e6e4645
5 changed files with 45 additions and 24 deletions
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33
utils/pathUtils.js
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@ -1,9 +1,9 @@
"use strict";
// get continuous paths for all cells at once based on getType(cellId) comparison
function getVertexPaths({getType, options}) {
// get continuous paths (isolines) for all cells at once based on getType(cellId) comparison
function getIsolines(getType, options = {polygons: false, fill: false, halo: false, waterGap: false}) {
const {cells, vertices} = pack;
const paths = {};
const isolines = {};
const checkedCells = new Uint8Array(cells.c.length);
const addToChecked = cellId => (checkedCells[cellId] = 1);
@ -32,10 +32,10 @@ function getVertexPaths({getType, options}) {
const vertexChain = connectVertices({startingVertex, ofSameType, addToChecked, closeRing: true});
if (vertexChain.length < 3) continue;
addPath(type, vertexChain);
addIsoline(type, vertexChain);
}
return Object.entries(paths);
return Object.entries(isolines);
function getBorderPath(vertexChain, discontinue) {
let discontinued = true;
@ -68,11 +68,12 @@ function getVertexPaths({getType, options}) {
return adjacentCells.every(i => cells.h[i] >= 20);
}
function addPath(index, vertexChain) {
if (!paths[index]) paths[index] = {fill: "", waterGap: "", halo: ""};
if (options.fill) paths[index].fill += getFillPath(vertexChain);
if (options.halo) paths[index].halo += getBorderPath(vertexChain, isBorderVertex);
if (options.waterGap) paths[index].waterGap += getBorderPath(vertexChain, isLandVertex);
function addIsoline(index, vertexChain) {
if (!isolines[index]) isolines[index] = {polygons: [], fill: "", waterGap: "", halo: ""};
if (options.polygons) isolines[index].polygons.push(vertexChain.map(getVertexPoint));
if (options.fill) isolines[index].fill += getFillPath(vertexChain);
if (options.halo) isolines[index].halo += getBorderPath(vertexChain, isBorderVertex);
if (options.waterGap) isolines[index].waterGap += getBorderPath(vertexChain, isLandVertex);
}
}
@ -124,6 +125,18 @@ function getVertexPath(cellsArray) {
return path;
}
function getPolesOfInaccessibility(getType) {
const isolines = getIsolines(getType, {polygons: true});
const poles = isolines.map(([id, isoline]) => {
const multiPolygon = isoline.polygons.sort((a, b) => b.length - a.length);
const [x, y] = polylabel(multiPolygon, 20);
return [id, [rn(x), rn(y)]];
});
return Object.fromEntries(poles);
}
function connectVertices({startingVertex, ofSameType, addToChecked, closeRing}) {
const vertices = pack.vertices;
const MAX_ITERATIONS = pack.cells.i.length;