fractal-noise - npm Package Compare versions

Comparing version 0.1.0 to 0.2.0

CHANGELOG.md

 # Change Log
 
-## Unreleased
+## [Unreleased]
+### Changed
+- Constrain noise source more accurately for `generateCylinder`.
+
+### Fixed
+- Use correct operator for 3D noise `y0` calculation.
+
+### Removed
+- Remove white noise scaling using `frequency` (makes no difference).
+
+## [v0.1] – 2017-02-14
 ### Added
 - Create functions `generateCylinder`, `generateLine`, `generateRectangle`.
+
+[Unreleased]: https://github.com/joshforisha/fractal-noise-js/compare/v0.1...HEAD
+[v0.1]: https://github.com/joshforisha/fractal-noise-js/releases/tag/v0.1

lib/index.js

@@ -41,3 +41,3 @@ "use strict";
         var _c = [x - _x, y - _y, z - _z], xi = _c[0], yi = _c[1], zi = _c[2];
-        var _d = [((_x - 1) + sx) % sx, ((_y - 1) + sy) & sy, ((_z - 1) + sz) % sz], x0 = _d[0], y0 = _d[1], z0 = _d[2];
+        var _d = [((_x - 1) + sx) % sx, ((_y - 1) + sy) % sy, ((_z - 1) + sz) % sz], x0 = _d[0], y0 = _d[1], z0 = _d[2];
         var _e = [_x % sx, _y % sy, _z % sz], x1 = _e[0], y1 = _e[1], z1 = _e[2];
@@ -58,6 +58,6 @@ var _f = [(_x + 1) % sx, (_y + 1) % sy, (_z + 1) % sz], x2 = _f[0], y2 = _f[1], z2 = _f[2];
     var _a = processOptions(options), amplitude = _a.amplitude, frequency = _a.frequency, octaves = _a.octaves, persistence = _a.persistence;
-    var size = Math.ceil(Math.max(circumference, height) * frequency);
-    var white = generateArray(size, function () {
-        return generateArray(size, function () {
-            return window.crypto.getRandomValues(new Uint8Array(size));
+    var diameter = Math.ceil(circumference / Math.PI);
+    var white = generateArray(diameter, function () {
+        return generateArray(height, function () {
+            return window.crypto.getRandomValues(new Uint8Array(diameter));
         });
@@ -97,4 +97,3 @@ });
     var _a = processOptions(options), amplitude = _a.amplitude, frequency = _a.frequency, octaves = _a.octaves, persistence = _a.persistence;
-    var size = Math.ceil(Math.max(width, height) * frequency);
-    var white = generateArray(size, function () { return window.crypto.getRandomValues(new Uint8Array(size)); });
+    var white = generateArray(width, function () { return window.crypto.getRandomValues(new Uint8Array(height)); });
     var noise = generate2DNoiseFn(white);
@@ -101,0 +100,0 @@ return generateArray(width, function (x) { return generateArray(height, function (y) {

package.json

 {
   "name": "fractal-noise",
-  "version": "0.1.0",
+  "version": "0.2.0",
   "description": "Fractal noise library",
@@ -5,0 +5,0 @@ "main": "lib/index.js",

README.md

@@ -12,2 +12,34 @@ # Fractal Noise
 
+## Examples
+
+```javascript
+generateCylinder(width, height, { frequency: 0.04, octaves: 2 })
+```
+![Low frequency, double octave cylinder](https://github.com/joshforisha/fractal-noise-js/blob/master/images/cylinder-low-2.png)
+
+```javascript
+generateCylinder(width, height, { frequency: 0.06, octaves: 8 })
+```
+![Medium frequency, high octave cylinder](https://github.com/joshforisha/fractal-noise-js/blob/master/images/cylinder-medium-8.png)
+
+```javascript
+generateLine(width) // (Replicated across y-axis)
+```
+![Default line](https://github.com/joshforisha/fractal-noise-js/blob/master/images/line-default.png)
+
+```javascript
+generateLine(width, { frequency: 0.1 }) // (Replicated across x-axis)
+```
+![High frequency line](https://github.com/joshforisha/fractal-noise-js/blob/master/images/line-high.png)
+
+```javascript
+generateRectangle(width, height)
+```
+![Default rectangle](https://github.com/joshforisha/fractal-noise-js/blob/master/images/rectangle-default.png)
+
+```javascript
+generateRectangle(width, height, { frequency: 0.04, octaves: 8 })
+```
+![Low frequency, high octave rectangle](https://github.com/joshforisha/fractal-noise-js/blob/master/images/rectangle-low-8.png)
+
 ## API
@@ -14,0 +46,0 @@

src/index.ts

@@ -59,3 +59,3 @@ const TWO_PI = 2 * Math.PI
     const [xi, yi, zi] = [x - _x, y - _y, z - _z]
-    const [x0, y0, z0] = [((_x - 1) + sx) % sx, ((_y - 1) + sy) & sy, ((_z - 1) + sz) % sz]
+    const [x0, y0, z0] = [((_x - 1) + sx) % sx, ((_y - 1) + sy) % sy, ((_z - 1) + sz) % sz]
     const [x1, y1, z1] = [_x % sx, _y % sy, _z % sz]
@@ -106,6 +106,6 @@ const [x2, y2, z2] = [(_x + 1) % sx, (_y + 1) % sy, (_z + 1) % sz]
   const { amplitude, frequency, octaves, persistence } = processOptions(options)
-  const size = Math.ceil(Math.max(circumference, height) * frequency)
-  const white = generateArray(size, () =>
-    generateArray(size, () =>
-      window.crypto.getRandomValues(new Uint8Array(size))
+  const diameter = Math.ceil(circumference / Math.PI)
+  const white = generateArray(diameter, () =>
+    generateArray(height, () =>
+      window.crypto.getRandomValues(new Uint8Array(diameter))
     )
@@ -143,4 +143,3 @@ )
   const { amplitude, frequency, octaves, persistence } = processOptions(options)
-  const size = Math.ceil(Math.max(width, height) * frequency)
-  const white = generateArray(size, () => window.crypto.getRandomValues(new Uint8Array(size)))
+  const white = generateArray(width, () => window.crypto.getRandomValues(new Uint8Array(height)))
   const noise = generate2DNoiseFn(white)
@@ -147,0 +146,0 @@ return generateArray(width, x => generateArray(height, y =>

No alert changes

Improved metrics

Total package byte prevSize

415908

increased by2183.33%

Number of package files

16

increased by60%

Number of lines in readme file

61

increased by110.34%

Worsened metrics

Lines of code

274

decreased by-0.72%

No dependency changes