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Merge pull request #458 from evolvedexperiment/elevation-profile-gradient

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Changed elevation profile to use heightmap colours
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Azgaar 2020-05-17 13:27:09 +03:00 • committed by GitHub
commit f9457060ef
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1 changed files with 10 additions and 5 deletions
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15
modules/ui/elevation-profile.js
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@ -49,14 +49,14 @@ function showElevationProfile(data, routeLen, isRiver) {
}
const chartWidth = window.innerWidth-280;
const chartHeight = 200; // height of our land/sea profile, excluding the biomes data below
const chartHeight = 300; // height of our land/sea profile, excluding the biomes data below
const xOffset = 160;
const yOffset = 140; // this is our drawing starting point from top-left (y = 0) of SVG
const yOffset = 70; // this is our drawing starting point from top-left (y = 0) of SVG
const biomesHeight = 40;
let chartData = {biome:[], burg:[], cell:[], height:[], mi:1000000, ma:0, points:[] }
let chartData = {biome:[], burg:[], cell:[], height:[], mi:1000000, ma:0, mih: 100, mah: 0, points:[] }
for (let i=0, prevB=0, prevH=-1; i<data.length; i++) {
let cell = data[i];
@ -83,6 +83,8 @@ function showElevationProfile(data, routeLen, isRiver) {
chartData.cell[i] = cell;
let sh = getHeight(h);
chartData.height[i] = parseInt(sh.substr(0, sh.indexOf(' ')));
chartData.mih = Math.min(chartData.mih, h);
chartData.mah = Math.max(chartData.mah, h);
chartData.mi = Math.min(chartData.mi, chartData.height[i]);
chartData.ma = Math.max(chartData.ma, chartData.height[i]);
}
@ -107,9 +109,12 @@ function showElevationProfile(data, routeLen, isRiver) {
// arrow-head definition
chart.append("defs").append("marker").attr("id", "arrowhead").attr("orient", "auto").attr("markerWidth", "2").attr("markerHeight", "4").attr("refX", "0.1").attr("refY", "2").append("path").attr("d", "M0,0 V4 L2,2 Z").attr("fill", "darkgray");
let colors = getColorScheme();
var landdef = chart.select("defs").append("linearGradient").attr("id", "landdef").attr("x1", "0%").attr("y1", "0%").attr("x2", "0%").attr("y2", "100%");
landdef.append("stop").attr("offset", "0%").attr("style", "stop-color:rgb(64,255,128);stop-opacity:1");
landdef.append("stop").attr("offset", "100%").attr("style", "stop-color:rgb(0,192,64);stop-opacity:1");
for (let k=chartData.mah; k >= chartData.mih; k--) {
let perc = 1 - (k - chartData.mih) / (chartData.mah - chartData.mih);
landdef.append("stop").attr("offset", perc*100 + "%").attr("style", "stop-color:" + getColor(k, colors) + ";stop-opacity:1");
}
// land
let curve = d3.line().curve(d3.curveBasis); // see https://github.com/d3/d3-shape#curves