Merge pull request #12 from nhartland/dev

Version 0.4

.ldoctest

@@ -0,0 +1,12 @@
+-- Environment for `forma` ldoctests
+return {
+    math = math,
+    assert = assert,
+    print = function() end,
+    cell          = require('forma.cell'),
+    pattern       = require('forma.pattern'),
+    automata      = require('forma.automata'),
+    primitives    = require('forma.primitives'),
+    subpattern    = require('forma.subpattern'),
+    neighbourhood = require('forma.neighbourhood'),
+    }

CHANGELOG.md

@@ -60,3 +60,16 @@
 - Slightly faster convergence check for `automata.iterate`
 - Harmonised coordinate handling between pattern prototype and tostring
 
+
+0.4
+---------
+
+# Features
+- Perlin noise sampling
+- Quadratic Bezier curve drawing.
+
+# Misc
+ - Check that CA rule sets don't have neighbourhoods that are too large for 
+   the rule signature format (>10 neighbours)
+ - Fixed some typos in usage examples
+ - Setup forma documentation example checking with `ldoctest`

README.md

@@ -21,12 +21,13 @@ suited (but not limited) to the generation of roguelike environments.
 
 - **A spatial-hashing pattern** class for fast lookup of active cells.
 - **Pattern manipulators** such as the addition, subtraction, rotation and reflection of patterns.
-- **Rasterisation algorithms** for 2D primitives, e.g lines, circles, squares.
+- **Rasterisation algorithms** for 2D primitives, e.g lines, circles, squares and Bezier curves.
 - A very flexible **cellular automata** implementation with
     - Synchronous and asynchronous updates
     - Combination of multiple rule sets
 - **Pattern sampling** algorithms including
     - Random (white noise) sampling
+    - Perlin noise sampling
     - Poisson-disc sampling
     - Mitchell's best-candidate sampling
 - **Algorithms for subpattern finding** including
@@ -69,7 +70,7 @@ end
 
 -- Find all 4-contiguous segments of the CA pattern
 -- Uses the von-neumann neighbourhood to determine 'connectedness'
--- but any custom neighbourhood can be used)
+-- but any custom neighbourhood can be used.
 local segments = subpattern.segments(ca, neighbourhood.von_neumann())
 
 -- Print a representation to io.output
@@ -82,12 +83,19 @@ subpattern.print_patterns(domain, segments)
 is written in pure Lua, no compilation is required. Including the project is as
 simple as including the `forma` directory in your project or Lua path.
 
-The easiest way to do this is via LuaRocks:
+The easiest way to do this is via LuaRocks. To install the latest stable version
+use:
 
 ```Shell
     luarocks install forma
 ```
 
+Alternatively you can try the dev branch with:
+
+```Shell
+    luarocks install --server=http://luarocks.org/dev golflike
+```
+
 ## Documentation
 
 Documentation is hosted [here](https://nhartland.github.io/forma/).

docs/contents.html

@@ -51,6 +51,7 @@ <h2>Examples</h2>
   <li><a href="examples/corridors.lua.html">corridors.lua</a></li>
   <li><a href="examples/isolines.lua.html">isolines.lua</a></li>
   <li><a href="examples/maxrectangle.lua.html">maxrectangle.lua</a></li>
+  <li><a href="examples/perlin.lua.html">perlin.lua</a></li>
   <li><a href="examples/readme.lua.html">readme.lua</a></li>
   <li><a href="examples/sampling.lua.html">sampling.lua</a></li>
   <li><a href="examples/voronoi.lua.html">voronoi.lua</a></li>
@@ -127,6 +128,10 @@ <h2>Examples</h2>
 		<td class="name"  nowrap><a href="examples/maxrectangle.lua.html">maxrectangle.lua</a></td>
 		<td class="summary"></td>
 	</tr>
+	<tr>
+		<td class="name"  nowrap><a href="examples/perlin.lua.html">perlin.lua</a></td>
+		<td class="summary"></td>
+	</tr>
 	<tr>
 		<td class="name"  nowrap><a href="examples/readme.lua.html">readme.lua</a></td>
 		<td class="summary"></td>
@@ -145,7 +150,7 @@ <h2>Examples</h2>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2018-08-08 18:12:10 </i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

docs/examples/async_automata.lua.html

@@ -41,6 +41,7 @@ <h2>Examples</h2>
   <li><a href="../examples/corridors.lua.html">corridors.lua</a></li>
   <li><a href="../examples/isolines.lua.html">isolines.lua</a></li>
   <li><a href="../examples/maxrectangle.lua.html">maxrectangle.lua</a></li>
+  <li><a href="../examples/perlin.lua.html">perlin.lua</a></li>
   <li><a href="../examples/readme.lua.html">readme.lua</a></li>
   <li><a href="../examples/sampling.lua.html">sampling.lua</a></li>
   <li><a href="../examples/voronoi.lua.html">voronoi.lua</a></li>
@@ -107,7 +108,7 @@ <h2>async_automata.lua</h2>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2018-08-08 18:12:10 </i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

docs/examples/binary_space_partition.lua.html

@@ -41,6 +41,7 @@ <h2>Examples</h2>
   <li><a href="../examples/corridors.lua.html">corridors.lua</a></li>
   <li><a href="../examples/isolines.lua.html">isolines.lua</a></li>
   <li><a href="../examples/maxrectangle.lua.html">maxrectangle.lua</a></li>
+  <li><a href="../examples/perlin.lua.html">perlin.lua</a></li>
   <li><a href="../examples/readme.lua.html">readme.lua</a></li>
   <li><a href="../examples/sampling.lua.html">sampling.lua</a></li>
   <li><a href="../examples/voronoi.lua.html">voronoi.lua</a></li>
@@ -81,7 +82,7 @@ <h2>binary_space_partition.lua</h2>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2018-08-08 18:12:10 </i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

docs/examples/bubbles.lua.html

@@ -41,6 +41,7 @@ <h2>Examples</h2>
   <li><a href="../examples/corridors.lua.html">corridors.lua</a></li>
   <li><a href="../examples/isolines.lua.html">isolines.lua</a></li>
   <li><a href="../examples/maxrectangle.lua.html">maxrectangle.lua</a></li>
+  <li><a href="../examples/perlin.lua.html">perlin.lua</a></li>
   <li><a href="../examples/readme.lua.html">readme.lua</a></li>
   <li><a href="../examples/sampling.lua.html">sampling.lua</a></li>
   <li><a href="../examples/voronoi.lua.html">voronoi.lua</a></li>
@@ -91,7 +92,7 @@ <h2>bubbles.lua</h2>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2018-08-08 18:12:10 </i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

docs/examples/cellular_automata.lua.html

@@ -41,6 +41,7 @@ <h2>Examples</h2>
   <li><a href="../examples/corridors.lua.html">corridors.lua</a></li>
   <li><a href="../examples/isolines.lua.html">isolines.lua</a></li>
   <li><a href="../examples/maxrectangle.lua.html">maxrectangle.lua</a></li>
+  <li><a href="../examples/perlin.lua.html">perlin.lua</a></li>
   <li><a href="../examples/readme.lua.html">readme.lua</a></li>
   <li><a href="../examples/sampling.lua.html">sampling.lua</a></li>
   <li><a href="../examples/voronoi.lua.html">voronoi.lua</a></li>
@@ -94,7 +95,7 @@ <h2>cellular_automata.lua</h2>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2018-08-08 18:12:10 </i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

docs/examples/corridors.lua.html

@@ -41,6 +41,7 @@ <h2>Examples</h2>
   <li><strong>corridors.lua</strong></li>
   <li><a href="../examples/isolines.lua.html">isolines.lua</a></li>
   <li><a href="../examples/maxrectangle.lua.html">maxrectangle.lua</a></li>
+  <li><a href="../examples/perlin.lua.html">perlin.lua</a></li>
   <li><a href="../examples/readme.lua.html">readme.lua</a></li>
   <li><a href="../examples/sampling.lua.html">sampling.lua</a></li>
   <li><a href="../examples/voronoi.lua.html">voronoi.lua</a></li>
@@ -99,7 +100,7 @@ <h2>corridors.lua</h2>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2018-08-08 18:12:10 </i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

docs/examples/isolines.lua.html

@@ -41,6 +41,7 @@ <h2>Examples</h2>
   <li><a href="../examples/corridors.lua.html">corridors.lua</a></li>
   <li><strong>isolines.lua</strong></li>
   <li><a href="../examples/maxrectangle.lua.html">maxrectangle.lua</a></li>
+  <li><a href="../examples/perlin.lua.html">perlin.lua</a></li>
   <li><a href="../examples/readme.lua.html">readme.lua</a></li>
   <li><a href="../examples/sampling.lua.html">sampling.lua</a></li>
   <li><a href="../examples/voronoi.lua.html">voronoi.lua</a></li>
@@ -102,7 +103,7 @@ <h2>isolines.lua</h2>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2018-08-08 18:12:10 </i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

docs/examples/maxrectangle.lua.html

@@ -41,6 +41,7 @@ <h2>Examples</h2>
   <li><a href="../examples/corridors.lua.html">corridors.lua</a></li>
   <li><a href="../examples/isolines.lua.html">isolines.lua</a></li>
   <li><strong>maxrectangle.lua</strong></li>
+  <li><a href="../examples/perlin.lua.html">perlin.lua</a></li>
   <li><a href="../examples/readme.lua.html">readme.lua</a></li>
   <li><a href="../examples/sampling.lua.html">sampling.lua</a></li>
   <li><a href="../examples/voronoi.lua.html">voronoi.lua</a></li>
@@ -85,7 +86,7 @@ <h2>maxrectangle.lua</h2>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2018-08-08 18:12:10 </i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

docs/examples/perlin.lua.html

@@ -0,0 +1,94 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html>
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
+<head>
+    <title>forma Reference</title>
+    <link rel="stylesheet" href="../ldoc.css" type="text/css" />
+</head>
+<body>
+
+<div id="container">
+
+<div id="product">
+	<div id="product_logo"></div>
+	<div id="product_name"><big><b></b></big></div>
+	<div id="product_description"></div>
+</div> <!-- id="product" -->
+
+
+<div id="main">
+
+
+<!-- Menu -->
+
+<div id="navigation">
+<br/>
+<h1>forma</h1>
+
+<ul>
+  <li><a href="../contents.html">Index</a></li>
+</ul>
+
+
+
+<h2>Examples</h2>
+<ul class="nowrap">
+  <li><a href="../examples/async_automata.lua.html">async_automata.lua</a></li>
+  <li><a href="../examples/binary_space_partition.lua.html">binary_space_partition.lua</a></li>
+  <li><a href="../examples/bubbles.lua.html">bubbles.lua</a></li>
+  <li><a href="../examples/cellular_automata.lua.html">cellular_automata.lua</a></li>
+  <li><a href="../examples/corridors.lua.html">corridors.lua</a></li>
+  <li><a href="../examples/isolines.lua.html">isolines.lua</a></li>
+  <li><a href="../examples/maxrectangle.lua.html">maxrectangle.lua</a></li>
+  <li><strong>perlin.lua</strong></li>
+  <li><a href="../examples/readme.lua.html">readme.lua</a></li>
+  <li><a href="../examples/sampling.lua.html">sampling.lua</a></li>
+  <li><a href="../examples/voronoi.lua.html">voronoi.lua</a></li>
+</ul>
+<h2>Modules</h2>
+<ul class="nowrap">
+  <li><a href="../modules/forma.cell.html">forma.cell</a></li>
+  <li><a href="../modules/forma.pattern.html">forma.pattern</a></li>
+  <li><a href="../modules/forma.primitives.html">forma.primitives</a></li>
+  <li><a href="../modules/forma.subpattern.html">forma.subpattern</a></li>
+  <li><a href="../modules/forma.automata.html">forma.automata</a></li>
+  <li><a href="../modules/forma.neighbourhood.html">forma.neighbourhood</a></li>
+</ul>
+<h2>Readme</h2>
+<ul class="nowrap">
+  <li><a href="../readme/README.md.html">README</a></li>
+</ul>
+
+</div>
+
+<div id="content">
+
+    <h2>perlin.lua</h2>
+<pre>
+<span class="comment">-- Perlin noise sampling
+</span><span class="comment">-- Here we sample a square domain pattern according to perlin noise,
+</span><span class="comment">-- generating three new patterns consisting of the noise thresholded at
+</span><span class="comment">-- values of 0, 0.5 and 0.7.
+</span>
+<span class="keyword">local</span> subpattern = <span class="global">require</span>(<span class="string">'forma.subpattern'</span>)
+<span class="keyword">local</span> primitives = <span class="global">require</span>(<span class="string">'forma.primitives'</span>)
+
+<span class="keyword">local</span> domain = primitives.square(<span class="number">80</span>,<span class="number">20</span>)
+<span class="keyword">local</span> frequency, depth = <span class="number">0.2</span>, <span class="number">1</span>
+<span class="keyword">local</span> thresholds = {<span class="number">0</span>, <span class="number">0.5</span>, <span class="number">0.7</span>}
+<span class="keyword">local</span> noise  = subpattern.perlin(domain, frequency, depth, thresholds)
+
+<span class="comment">-- Print resulting pattern segments
+</span>subpattern.print_patterns(domain, noise, {<span class="string">'.'</span>, <span class="string">'+'</span>, <span class="string">'o'</span>})</pre>
+
+
+</div> <!-- id="content" -->
+</div> <!-- id="main" -->
+<div id="about">
+<i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
+</div> <!-- id="about" -->
+</div> <!-- id="container" -->
+</body>
+</html>

docs/examples/readme.lua.html

@@ -41,6 +41,7 @@ <h2>Examples</h2>
   <li><a href="../examples/corridors.lua.html">corridors.lua</a></li>
   <li><a href="../examples/isolines.lua.html">isolines.lua</a></li>
   <li><a href="../examples/maxrectangle.lua.html">maxrectangle.lua</a></li>
+  <li><a href="../examples/perlin.lua.html">perlin.lua</a></li>
   <li><strong>readme.lua</strong></li>
   <li><a href="../examples/sampling.lua.html">sampling.lua</a></li>
   <li><a href="../examples/voronoi.lua.html">voronoi.lua</a></li>
@@ -112,7 +113,7 @@ <h2>readme.lua</h2>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2018-08-08 18:12:10 </i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

docs/examples/sampling.lua.html

@@ -41,6 +41,7 @@ <h2>Examples</h2>
   <li><a href="../examples/corridors.lua.html">corridors.lua</a></li>
   <li><a href="../examples/isolines.lua.html">isolines.lua</a></li>
   <li><a href="../examples/maxrectangle.lua.html">maxrectangle.lua</a></li>
+  <li><a href="../examples/perlin.lua.html">perlin.lua</a></li>
   <li><a href="../examples/readme.lua.html">readme.lua</a></li>
   <li><strong>sampling.lua</strong></li>
   <li><a href="../examples/voronoi.lua.html">voronoi.lua</a></li>
@@ -93,7 +94,7 @@ <h2>sampling.lua</h2>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2018-08-08 18:12:10 </i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>

docs/examples/voronoi.lua.html

@@ -41,6 +41,7 @@ <h2>Examples</h2>
   <li><a href="../examples/corridors.lua.html">corridors.lua</a></li>
   <li><a href="../examples/isolines.lua.html">isolines.lua</a></li>
   <li><a href="../examples/maxrectangle.lua.html">maxrectangle.lua</a></li>
+  <li><a href="../examples/perlin.lua.html">perlin.lua</a></li>
   <li><a href="../examples/readme.lua.html">readme.lua</a></li>
   <li><a href="../examples/sampling.lua.html">sampling.lua</a></li>
   <li><strong>voronoi.lua</strong></li>
@@ -85,7 +86,7 @@ <h2>voronoi.lua</h2>
 </div> <!-- id="main" -->
 <div id="about">
 <i>generated by <a href="http://github.com/stevedonovan/LDoc">LDoc 1.4.6</a></i>
-<i style="float:right;">Last updated 2018-08-08 18:12:10 </i>
+<i style="float:right;">Last updated 2019-01-07 21:10:29 </i>
 </div> <!-- id="about" -->
 </div> <!-- id="container" -->
 </body>