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heightmap editor - insulate feature

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Azgaar 2022-05-21 01:50:12 +03:00
parent 118306dca2
commit cf92a65ea1
4 changed files with 184 additions and 141 deletions
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31
modules/heightmap-generator.js
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@ -26,7 +26,7 @@ window.HeightmapGenerator = (function () {
// load heightmap into image and render to canvas
const img = new Image();
img.src = `./heightmaps/${input.value}.png`;
img.onload = function () {
img.onload = () => {
ctx.drawImage(img, 0, 0, cellsX, cellsY);
const imageData = ctx.getImageData(0, 0, cellsX, cellsY);
assignColorsToHeight(imageData.data);
@ -61,6 +61,7 @@ window.HeightmapGenerator = (function () {
if (a1 === "Range") return addRange(a2, a3, a4, a5);
if (a1 === "Trough") return addTrough(a2, a3, a4, a5);
if (a1 === "Strait") return addStrait(a2, a3);
if (a1 === "Insulate") return insulate(a2);
if (a1 === "Add") return modify(a3, +a2, 1);
if (a1 === "Multiply") return modify(a3, 0, +a2);
if (a1 === "Smooth") return smooth(a2);
@ -100,7 +101,7 @@ window.HeightmapGenerator = (function () {
if (cells === 100000) return 0.93;
}
const addHill = function (count, height, rangeX, rangeY) {
const addHill = (count, height, rangeX, rangeY) => {
count = getNumberInRange(count);
const power = getBlobPower();
while (count > 0) {
@ -137,7 +138,7 @@ window.HeightmapGenerator = (function () {
}
};
const addPit = function (count, height, rangeX, rangeY) {
const addPit = (count, height, rangeX, rangeY) => {
count = getNumberInRange(count);
while (count > 0) {
addOnePit();
@ -173,7 +174,7 @@ window.HeightmapGenerator = (function () {
}
};
const addRange = function (count, height, rangeX, rangeY) {
const addRange = (count, height, rangeX, rangeY) => {
count = getNumberInRange(count);
const power = getLinePower();
while (count > 0) {
@ -259,7 +260,7 @@ window.HeightmapGenerator = (function () {
}
};
const addTrough = function (count, height, rangeX, rangeY) {
const addTrough = (count, height, rangeX, rangeY) => {
count = getNumberInRange(count);
const power = getLinePower();
while (count > 0) {
@ -354,7 +355,7 @@ window.HeightmapGenerator = (function () {
}
};
const addStrait = function (width, direction = "vertical") {
const addStrait = (width, direction = "vertical") => {
width = Math.min(getNumberInRange(width), grid.cellsX / 3);
if (width < 1 && P(width)) return;
const used = new Uint8Array(cells.h.length);
@ -407,7 +408,7 @@ window.HeightmapGenerator = (function () {
}
};
const modify = function (range, add, mult, power) {
const modify = (range, add, mult, power) => {
const min = range === "land" ? 20 : range === "all" ? 0 : +range.split("-")[0];
const max = range === "land" || range === "all" ? 100 : +range.split("-")[1];
const isLand = min === 20;
@ -422,14 +423,26 @@ window.HeightmapGenerator = (function () {
});
};
const smooth = function (fr = 2, add = 0) {
const smooth = (fr = 2, add = 0) => {
cells.h = cells.h.map((h, i) => {
const a = [h];
cells.c[i].forEach(c => a.push(cells.h[c]));
if (fr === 1) return d3.mean(a) + add;
return lim((h * (fr - 1) + d3.mean(a) + add) / fr);
});
};
const insulate = (fr = 2) => {
const power = fr * 2;
cells.h = cells.h.map((h, i) => {
const [x, y] = p[i];
const nx = (2 * x) / graphWidth - 1;
const ny = (2 * y) / graphHeight - 1;
const distance = (1 - nx ** power) * (1 - ny ** power); // 1 is center, 0 is edge
return h * distance;
});
};
function getPointInRange(range, length) {
if (typeof range !== "string") {
ERROR && console.error("Range should be a string");
@ -449,5 +462,5 @@ window.HeightmapGenerator = (function () {
}
}
return {generate, addHill, addRange, addTrough, addStrait, addPit, smooth, modify};
return {generate, addHill, addRange, addTrough, addStrait, addPit, smooth, modify, insulate};
})();