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OpenJsCad parser added, to parse local files with .jscad extension

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This commit is contained in:
Joost Nieuwenhuijse 2012-01-21 17:28:19 +01:00
parent a66db774a2
commit 47372abdbd
2 changed files with 349 additions and 11 deletions
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38
index.html
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@ -32,8 +32,8 @@ textarea:focus {
outline: none;
}
h1, h2 { font: bold 50px/50px 'Helvetica Neue', Helvetica, Arial; }
h2 { font-size: 30px; margin: 10px 0 0 0; }
//h1, h2 { font: bold 50px/50px 'Helvetica Neue', Helvetica, Arial; }
//h2 { font-size: 30px; margin: 10px 0 0 0; }
a { color: inherit; }
.viewer { width: 200px; height: 200px; background: #EEE url(images.png); }
#combined .viewer { width: 150px; height: 150px; }
@ -42,6 +42,10 @@ td { padding: 5px; text-align: center; }
td code { background: none; border: none; color: inherit; }
canvas { cursor: move; }
#needchrome {
display: none;
}
</style>
<script>
@ -56,6 +60,14 @@ function isChrome()
function onload()
{
var needchromediv = document.getElementById("needchrome");
if(needchromediv)
{
if(!isChrome())
{
needchromediv.style.display="block";
}
}
var containerelement = document.getElementById("viewer");
gViewer = new OpenJsCad.Viewer(containerelement, 600, 600, 50);
updateSolid();
@ -101,14 +113,18 @@ function getStl()
</head>
<body onload="onload()">
<h1>OpenJsCad</h1>
Please note: currently only works reliably in Google Chrome!<br>
Create an STL file using constructive solid modeling. Click <b>Update Preview</b> to parse the source code from the textarea.
Click Get STL to generate the stl data, ready for 3d printing. See below for documentation.
<div id="needchrome">Please note: OpenJsCad currently only runs reliably on Google Chrome!</div>
Create an STL file for 3D printing using constructive solid modeling in Javascript.
<table>
<tr>
<td><div id="viewer" class="viewer" style="background-image:none;width:600px;height:600px;"></div></td>
</tr>
</table>
<h2>Playground</h2>
Try it by entering some code below. Anything you enter will be lost as soon as this page is reloaded;
to build your own models you should instead store them in a .jscad file on your computer
and use the <a href="processfile.html"><b>OpenJsCad parser</b></a>.
<br><br>
<textarea id="code">var resolution = 16; // increase to get smoother corners (will get slow!)
var cube1 = CSG.roundedCube({center: [0,0,0], radius: [10,10,10], roundradius: 2, resolution: resolution});
@ -135,11 +151,11 @@ This is intended to become a Javascript based alternative to <a href="http://www
for 3D solid modeling.
CSG model is contructed using Javascript. For example:<br>
<code>var cube = CSG.cube(); return cube;</code> creates a cube with a radius of 1 and centered at the origin.
Enter javascript code in the textbox above. The code should end in a return statement, returning a CSG solid.
Click on Update Preview to generate the mesh and update the viewer.
The code should always end in a return statement, returning a CSG solid.
<br><br>
Click Get STL to generate the STL file. Create a file with .stl extension in a text editor and paste the contents
of the box into this file; this is ready to be printed on your 3d printer.
To build your own modes, create a .jscad file with your javascript code and parse the file using the
<a href="processfile.html">OpenJsCad parser</a>. When finished you can generate an .stl file,
ready to be printed on your 3d printer.
<h2>License</h2>
Copyright (c) 2012 Joost Nieuwenhuijse.
Uses CSG.js, <a href="https://github.com/evanw/csg.js">original</a> copyright (c) 2011 Evan Wallace,
@ -147,7 +163,9 @@ Uses CSG.js, <a href="https://github.com/evanw/csg.js">original</a> copyright (c
Uses <a href="https://github.com/evanw/lightgl.js">lightgl.js</a> by Evan Wallace for WebGL rendering.
All code released under MIT license.
<br><br>
Contributions are welcome! To contribute go to <a href="https://github.com/joostn/csg.js">CSG.js at GitHub</a>,
Contributions are welcome! It's all written in Javascript, so if you know how to use it you
know how to modify it as well.<br><br>
To contribute go to <a href="https://github.com/joostn/csg.js">CSG.js at GitHub</a>,
<a href="http://help.github.com/fork-a-repo/">create your own fork</a> and
<a href="http://help.github.com/send-pull-requests/">send me a pull request</a>.
<h2>Viewer navigation</h2>

320
processfile.html Normal file
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@ -0,0 +1,320 @@
<!DOCTYPE html>
<html><head>
<script src="lightgl.js"></script>
<script src="csg.js"></script>
<script src="openjscad.js"></script>
<style>
body {
font: 14px/20px 'Helvetica Neue Light', HelveticaNeue-Light, 'Helvetica Neue', Helvetica, Arial, sans-serif;
max-width: 600px;
margin: 0 auto;
padding: 10px;
}
pre, code, textarea {
font: 12px/20px Monaco, monospace;
border: 1px solid #CCC;
border-radius: 3px;
background: #F9F9F9;
padding: 0 3px;
color: #555;
}
pre, textarea {
padding: 10px;
width: 100%;
}
textarea {
height: 200px;
}
textarea:focus {
outline: none;
}
#filedropzone {
border: 2px dashed #bbb;
-moz-border-radius: 5px;
-webkit-border-radius: 5px;
border-radius: 5px;
padding: 15px;
color: black;
}
#filedropzone_empty {
text-align: center;
color: #bbb;
}
#filedropzone_filled {
color: black;
display: none;
}
#filebuttons {
float: right;
}
a { color: inherit; }
.viewer { width: 200px; height: 200px; background: #EEE url(images.png); }
#combined .viewer { width: 150px; height: 150px; }
table { border-collapse: collapse; margin: 0 auto; }
td { padding: 5px; text-align: center; }
td code { background: none; border: none; color: inherit; }
canvas { cursor: move; }
#errdiv {
border: 2px solid red;
display: none;
margin: 5px;
}
#needchrome {
display: none;
}
</style>
<script>
var gViewer=null;
var gSolid=new CSG();
var gCurrentFile = null;
function isChrome()
{
return (navigator.userAgent.search("Chrome") >= 0);
}
function onload()
{
var needchromediv = document.getElementById("needchrome");
if(needchromediv)
{
if(!isChrome())
{
needchromediv.style.display="block";
}
}
try
{
var containerelement = document.getElementById("viewer");
gViewer = new OpenJsCad.Viewer(containerelement, 600, 600, 50);
setupDragDrop();
} catch (e) {
alert(e.toString());
}
}
function updateSolid()
{
if(gViewer.supported())
{
var code=document.getElementById('code').value;
if(code != gSolidSource)
{
gSolidSource=code;
var errtxt = "";
var csg = new CSG();
try {
csg = OpenJsCad.javaScriptToSolid(code);
} catch (e) {
errtxt = 'Error: <code>' + e.toString().replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;') + '</code>';
}
gSolid = csg;
var errdiv=document.getElementById('error');
errdiv.innerHTML = errtxt;
errdiv.style.display = (errtxt == "")? "none":"block";
gViewer.setCsg(gSolid);
var stlarea = document.getElementById('stloutput');
stlarea.style.display = "none";
}
}
}
function getStl()
{
updateSolid();
var stl=gSolid.toStlString();
var stlarea = document.getElementById('stloutput');
stlarea.value=stl;
stlarea.style.display = "inline";
}
function setupDragDrop()
{
// Check for the various File API support.
if (window.File && window.FileReader && window.FileList) {
// Great success! All the File APIs are supported.
} else {
alert("Error: Your browser does not fully support the HTML File API");
}
var dropZone = document.getElementById('filedropzone');
dropZone.addEventListener('dragover', function(evt) {
evt.stopPropagation();
evt.preventDefault();
evt.dataTransfer.dropEffect = 'copy';
}, false);
dropZone.addEventListener('drop', handleFileSelect, false);
}
function handleFileSelect(evt)
{
try
{
evt.stopPropagation();
evt.preventDefault();
if(!evt.dataTransfer) throw new Error("Not a datatransfer (1)");
if(!evt.dataTransfer.files) throw new Error("Not a datatransfer (2)");
if(evt.dataTransfer.files.length != 1)
{
throw new Error("Please drop a single .jscad file");
}
var file = evt.dataTransfer.files[0];
if(!file.name.match(/\.jscad$/i))
{
throw new Error("Please drop a file with .jscad extension");
}
if(file.size == 0)
{
throw new Error("You have dropped an empty file");
}
gCurrentFile = file;
gPreviousModificationTime = "";
fileChanged();
} catch (e) {
alert(e.toString());
}
}
function fileChanged()
{
var dropZone = document.getElementById('filedropzone');
if(gCurrentFile)
{
var txt = "Current file: "+gCurrentFile.name;
document.getElementById("currentfile").innerHTML = txt;
document.getElementById("filedropzone_filled").style.display = "block";
document.getElementById("filedropzone_empty").style.display = "none";
}
else
{
document.getElementById("filedropzone_filled").style.display = "none";
document.getElementById("filedropzone_empty").style.display = "block";
}
parseFile();
}
function parseFile()
{
setErrorText("");
gSolid=new CSG();
if(gCurrentFile)
{
var reader = new FileReader();
reader.onload = function(evt) {
var txt = evt.target.result;
};
reader.onloadend = function(evt) {
if (evt.target.readyState == FileReader.DONE)
{
var jscadscript = evt.target.result;
if(jscadscript == "")
{
alert("Could not read file. This may be due to security restrictions: in Google Chrome the File API only works if this html page is on a web server. Accessing this page from your hard drive does not work.");
gViewer.setCsg(gSolid);
}
else
{
parseJscad(jscadscript);
}
}
else
{
alert("Failed to read file");
gViewer.setCsg(gSolid);
}
};
reader.readAsText(gCurrentFile, "UTF-8");
}
}
function parseJscad(script)
{
try
{
var csg = OpenJsCad.javaScriptToSolid(script);
gSolid = csg;
gViewer.setCsg(gSolid);
setErrorText("");
}
catch(e)
{
gSolid = new CSG();
gViewer.setCsg(gSolid);
setErrorText(e.toString());
}
enableItems();
var stlarea = document.getElementById('stloutput');
stlarea.style.display = "none";
}
function enableItems()
{
var hassolid = (gSolid.polygons.length > 0);
document.getElementById('getstlbutton').style.display = hassolid? "inline":"none";
}
function setErrorText(errtxt)
{
var errdiv = document.getElementById("errdiv");
errdiv.style.display = (errtxt == "")? "none":"block";
errdiv.innerHTML = errtxt;
}
function getStl()
{
var stl=gSolid.toStlString();
var stlarea = document.getElementById('stloutput');
stlarea.value=stl;
stlarea.style.display = "inline";
}
</script>
<title>OpenJsCad parser</title>
<body onload="onload()">
<h1>OpenJsCad parser</h1>
<div id="needchrome">Please note: OpenJsCad currently only runs reliably on Google Chrome!</div>
<div id="viewer" class="viewer" style="background-image:none;width:600px;height:600px;"></div>
<br>
<div id="errdiv"></div>
<div id="filedropzone">
<div id="filedropzone_empty">Drop your .jscad file here</div>
<div id="filedropzone_filled">
<span id="currentfile">dfghdfgh</span>
<div id="filebuttons">
<button id="getstlbutton" style="display:none" onclick="getStl();">Get STL</button>
<button onclick="parseFile();">Reload</button>
</div>
</div>
</div>
<textarea id="stloutput" readonly style="width: 80%; height: 100px; display: none;"></textarea><br>
<br>
<h2>Instructions:</h2>
Create a new file in your favorite text editor. To get started enter the following text:
<br>
<pre>
var cube = CSG.roundedCube({radius: 10, roundradius: 2, resolution: 16});
var sphere = CSG.sphere({radius: 10, resolution: 16}).translate([5, 5, 5]);
return cube.union(sphere);
</pre>
Save this to a file on your desktop with .jscad extension. Then drag &amp; drop the file from your desktop
to the box above (marked with 'drop your .jscad file here).<br><br>
The 3d model should now appear. You can continue to make changes to your .jscad file. Just press Reload
to parse the changes, you do not need to drag &amp; drop the file again.
<br><br>
When finished press Get STL to generate the STL file. Copy &amp; paste the STL text to a file with
.stl extension.
<br><br>
For more information about OpenJsCad see the <a href="index.html">introduction</a>.
</body>
</html>