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v1.0.26

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Azgaar 2019-09-12 23:24:32 +03:00
parent cbc702bfde
commit a3256e6726
17 changed files with 187 additions and 116 deletions
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29
modules/ui/heightmap-editor.js
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@ -1150,19 +1150,30 @@ function getHeight(h) {
document.body.insertBefore(canvas, optionsContainer);
ctx.drawImage(img, 0, 0, svgWidth, svgHeight);
// const imageData = ctx.getImageData(0, 0, svgWidth, svgHeight);
// for (let i=0; i < imageData.data.length; i+=4) {
// const v = Math.min(rn(imageData.data[i] * gauss(1, .05, .9, 1.1, 3)), 255);
// imageData.data[i] = v;
// imageData.data[i+1] = v;
// imageData.data[i+2] = v;
// }
// ctx.putImageData(imageData, 0, 0);
const simplex = new SimplexNoise(); // SimplexNoise by Jonas Wagner
const noise = (nx, ny) => simplex.noise2D(nx, ny) / 2 + .5;
const imageData = ctx.getImageData(0, 0, svgWidth, svgHeight);
for (let i=0; i < imageData.data.length; i+=4) {
const v = imageData.data[i];
if (v < 51) {
// water
imageData.data[i] = imageData.data[i+1] = imageData.data[i+2] = 46;
continue;
}
const x = i / 4 % svgWidth, y = Math.floor(i / 4 / svgWidth);
const nx = x / svgWidth - .5, ny = y / svgHeight - .5;
const n = noise(4 * nx, 4 * ny) / 4 + noise(16 * nx, 16 * ny) / 16;
const nv = Math.max(Math.min((v + 255 * n) / 2, 255), 51);
imageData.data[i] = imageData.data[i+1] = imageData.data[i+2] = nv;
}
ctx.putImageData(imageData, 0, 0);
const imgBig = canvas.toDataURL("image/png");
const link = document.createElement("a");
link.target = "_blank";
link.download = "heightmap_" + Date.now() + ".png";
link.download = getFileName("Heightmap") + ".png";
link.href = imgBig;
document.body.appendChild(link);
link.click();