If you want to render a wireframe of a given `geometry`, you can now use this pattern:

    var geo = new THREE.EdgesGeometry( geometry ); // or WireframeGeometry( geometry )

    var mat = new THREE.LineBasicMaterial( { color: 0xffffff, linewidth: 2 } );

    var wireframe = new THREE.LineSegments( geo, mat );

    scene.add( wireframe );

`WireframeGeometry` will render all edges. `EdgesGeometry` will render the hard edges only.

Also see [this related answer](https://stackoverflow.com/questions/31539130/display-wireframe-and-solid-color/31541369#31541369) on how to render both a model and its wireframe.

EDIT: updated to three.js.r.82



In JavaScript, when I want to run a script once when the page has loaded, should I use `window.onload` or just write the script?

For example, if I want to have a pop-up, should I write (directly inside the `&lt;script&gt;` tag):

    alert(&quot;hello!&quot;);

Or:

    window.onload = function() {
        alert(&quot;hello!&quot;);
    }

Both appear to run just after the page is loaded. What is the the difference?


When to use &quot;window.onload&quot;?

I have only a single key-value pair in a dictionary. I want to assign key to one variable
and it&#39;s value to another variable. I have tried with below ways but I am getting error for same.
 
    &gt;&gt;&gt; d = {&quot;a&quot;: 1}
    
    &gt;&gt;&gt; d.items()
    [(&#39;a&#39;, 1)]
    
    &gt;&gt;&gt; (k, v) = d.items()
    Traceback (most recent call last):
      File &quot;&lt;stdin&gt;&quot;, line 1, in &lt;module&gt;
    ValueError: need more than 1 value to unpack
    
    &gt;&gt;&gt; (k, v) = list(d.items())
    Traceback (most recent call last):
      File &quot;&lt;stdin&gt;&quot;, line 1, in &lt;module&gt;
    ValueError: need more than 1 value to unpack

I know that we can extract key and value one by one, or by for loop and `iteritems()`, but isn&#39;t there a simple way such that we can assign both in a single statement? 


How to extract dictionary single key-value pair in variables

I&#39;m using ThreeJS in a project and noticed that older versions render wireframes differently than newer versions, and I can&#39;t figure out how to revert (which I&#39;d prefer). 

This fiddle using release 54 renders only the exterior edges of the object drawn with a wireframe material: http://jsfiddle.net/ksRyQ/
or as pictured here in case this is platform specific (I&#39;m on mac chrome):

![enter image description here][1]

On the other hand, when I run the same code locally using the newer version r61 I see each polygon&#39;s edge, as in: 

![enter image description here][2]

the code in both cases is simple:

    material = new THREE.MeshBasicMaterial({
        color: 0xff0000,
        wireframe: true
    });

I&#39;m sure I could make the cube out of lines or something, but I&#39;d rather actually understand the issue.

Any clues? Is there a setting for this or something that can be tweaked? Secondarily, you&#39;ll note that right now that code is using the canvas renderer, although I plan to use the webGL renderer, but the same phenomenon is true with both (even though there are other differences).

  [1]: http://i.stack.imgur.com/1NGY0.png
  [2]: http://i.stack.imgur.com/illOG.png

Three.JS wireframe material - all polygons vs. just edges

I'm using ThreeJS in a project and noticed that older versions render wireframes differently than newer versions, and I can't figure out how to revert (which I'd prefer).
This fiddle using release 54 renders only the exterior edges of the object drawn with a wireframe material: <a href="http://jsfiddle.net/ksRyQ/" target="_blank" rel="noopener noreferrer">http://jsfiddle.net/ksRyQ/</a>
or as pictured here in case this is platform specific (I'm on mac chrome):
<img src="http://i.stack.imgur.com/1NGY0.png" alt="enter image description here">
On the other hand, when I run the same code locally using the newer version r61 I see each polygon's edge, as in:
<img src="http://i.stack.imgur.com/illOG.png" alt="enter image description here">
the code in both cases is simple:
<pre><code class="hljs language-php">material = new THREE.MeshBasicMaterial({
 color: 0xff0000,
 wireframe: true
});
</code></pre>
I'm sure I could make the cube out of lines or something, but I'd rather actually understand the issue.
Any clues? Is there a setting for this or something that can be tweaked? Secondarily, you'll note that right now that code is using the canvas renderer, although I plan to use the webGL renderer, but the same phenomenon is true with both (even though there are other differences).

Say I had a `div#parent` and I `append` and `remove` elements to it using jquery.  How would I be able to detect when such an event happens on the `div#parent` element?

How to detect element being added/removed from dom element?

I apologize if this question has already been answered. I&#39;ve tried searching for solutions but could not find any that suited my code. I&#39;m still new to jQuery.

I have two different types of sticky menus for two different pages. Here&#39;s the code for both. 

    $(document).ready(function () {
        var contentNav = $(&#39;.content-nav&#39;).offset().top;
        var stickyNav = function () {
            var scrollTop = $(window).scrollTop();
            if (scrollTop &gt; contentNav) {
                $(&#39;.content-nav&#39;).addClass(&#39;content-nav-sticky&#39;);
            } else {;
                $(&#39;.content-nav&#39;).removeClass(&#39;content-nav-sticky&#39;)
            }
        };
        stickyNav();
        $(window).scroll(function () {
            stickyNav();
        });
    });
    $(document).ready(function () {
        var stickyNavTop = $(&#39;.nav-map&#39;).offset().top;
        // var contentNav = $(&#39;.content-nav&#39;).offset().top;
        var stickyNav = function () {
            var scrollTop = $(window).scrollTop();
            if (scrollTop &gt; stickyNavTop) {
                $(&#39;.nav-map&#39;).addClass(&#39;sticky&#39;);
                // $(&#39;.content-nav&#39;).addClass(&#39;sticky&#39;);
            } else {
                $(&#39;.nav-map&#39;).removeClass(&#39;sticky&#39;);
                // $(&#39;.content-nav&#39;).removeClass(&#39;sticky&#39;)
            }
        };
        stickyNav();
        $(window).scroll(function () {
            stickyNav();
        });
    });

My problem is that the code for the sticky side menu on the bottom doesn&#39;t work because the second line of code `var contentNav = $(&#39;.content-nav&#39;).offset().top;` fires a error that reads &quot;Uncaught TypeError: Cannot read property &#39;top&#39; of undefined&quot;. In fact, no other jQuery code below that second line works at all unless they are placed above it. 

After some researching, I think the problem is that `$(&#39;.content-nav&#39;).offset().top` can&#39;t find the specified selector because it&#39;s on a different page. If so, I can&#39;t find a solution.

Uncaught TypeError: Cannot read property &#39;top&#39; of undefined

I have a basic controller that displays my products,

    App.controller(&#39;ProductCtrl&#39;,function($scope,$productFactory){
         $productFactory.get().success(function(data){
               $scope.products = data;
         });
    });

In my view I&#39;m displaying this products in a list

    &lt;ul&gt;
        &lt;li ng-repeat=&quot;product as products&quot;&gt;
            {{product.name}}
        &lt;/li&gt;
    &lt;/ul


What I&#39;m trying to do is when someone click on the product name, i have another view named cart where this product is added.

     &lt;ul class=&quot;cart&quot;&gt;
          &lt;li&gt;
              //click one added here
          &lt;/li&gt;
          &lt;li&gt;
              //click two added here
          &lt;/li&gt;
     &lt;/ul&gt;


So my doubt here is, how do pass this clicked products from first controller to second? i assumed that cart should be a controller too.

I handle click event using directive. Also i feel i should be using service to achieve above functionality just can&#39;t figure how? because cart will be predefined number of products added could be 5/10 depending on which page user is. So i would like to keep this generic.


Update: 
 
I created a service to broadcast and in the second controller i receive it. Now the query is how do i update dom? Since my list to drop product is pretty hardcoded.




Passing data between controllers in Angular JS?

I know there are many questions ask similar thing. But no one really solve my issue.

I&#39;m trying to build an directive which will execute an expression when mouse click outside the current element.

Why I need this function? I&#39;m building an app, in this app, there are 3 dropdown menu, 5 dropdown list(like chosen). All these are angular directives. Let&#39;s assume all these directives are different. So we have 8 directives. And all of them need a same function: when click out side the element, need hide the dropdown.

I have 2 solutions for this, but both got issue:

Solution A:

    app.directive(&#39;clickAnywhereButHere&#39;, function($document){
      return {
        restrict: &#39;A&#39;,
        link: function(scope, elem, attr, ctrl) {
          elem.bind(&#39;click&#39;, function(e) {
            // this part keeps it from firing the click on the document.
            e.stopPropagation();
          });
          $document.bind(&#39;click&#39;, function() {
            // magic here.
            scope.$apply(attr.clickAnywhereButHere);
          })
        }
      }
    })

Here is an example for solution A: [click here][1] 

When you click the first dropdown, then working, then click second input, the first should hide but not.


Solution B:

    app.directive(&#39;clickAnywhereButHere&#39;, [&#39;$document&#39;, function ($document) {
        directiveDefinitionObject = {
            link: {
                pre: function (scope, element, attrs, controller) { },
                post: function (scope, element, attrs, controller) {
                    onClick = function (event) {
                        var isChild = element.has(event.target).length &gt; 0;
                        var isSelf = element[0] == event.target;
                        var isInside = isChild || isSelf;
                        if (!isInside) {
                            scope.$apply(attrs.clickAnywhereButHere)
                        }
                    }
                    $document.click(onClick)
                }
            }
        }
        return directiveDefinitionObject
    }]);

Here is example for solution B: [click here][2]

Solution A working if there is just one directive in the page but not in my app. Because it&#39;s prevent bubbling, so first when I click on dropdown1, show dropdown1, then click on dropdown2, click event be prevent, so dropdown1 still showing there even I click outside the dropdown1.

Solution B working in my app which I&#39;m using now. But the issue is it&#39;s cause a performance issue. Too many click event be handled on every single click on anywhere in the app. In my current case, there are 8 click event bind with document, so every click execute 8 functions. Which cause my app very slow, especially in IE8.


So is there any better solution for this? Thanks


  [1]: http://jsfiddle.net/4sjvc/2/
  [2]: http://jsfiddle.net/4sjvc/3/

Directive that fires an event when clicking outside of the element

I have been working on a 3D project where we show 3D object in the web browser using Three.js Library.

The problem is: 

* 1st the model is displayed in a small dom element or when the browser window itself is small.
* Then when the window (or the dom element is resized) the model become pixellated

Following are some screenshots:

### Before resize:
![enter image description here][1]
### After resize:
![enter image description here][2]
### How it should be after resize:
![enter image description here][3]
---

Here is the part of code that is setting the the model dimensions (height and width), and this function gets called when the resize event if fired:

    console.log(&quot;domChanged fired&quot;)
    
    instance.domBoundingBox = instance.dom.getBoundingClientRect();
    instance.domCenterPos.x = instance.domBoundingBox.width / 2 + instance.domBoundingBox.left;
    instance.domCenterPos.y = instance.domBoundingBox.height / 2 + instance.domBoundingBox.top;
    
    var width = instance.dom.clientWidth, height = instance.dom.clientHeight;
    instance.domWidthHalf = width / 2, instance.domHeightHalf = height / 2;
    
    // TODO: fire event to expose it to site developers
    
    // here we should update several values regarding width,height,position
    if(instance.cameraReal) {
        instance.cameraReal.aspect = instance.dom.clientWidth / instance.dom.clientHeight;
        instance.cameraReal.updateProjectionMatrix();
    }
    
    if(instance.renderer3D)
        instance.renderer3D.setSize(instance.dom.clientWidth, instance.dom.clientHeight);
    

Can anybody give me a hint? I&#39;ve been working on that a couple of days already but no clue so far

  [1]: http://i.stack.imgur.com/O4j0V.jpg
  [2]: http://i.stack.imgur.com/c6toU.jpg
  [3]: http://i.stack.imgur.com/tipei.jpg

Three.js Resizing Canvas

The code work, but I&#39;m having a problem setting transparent background to the canvas with three.js. I use:

    Background.renderer.setClearColor(0xffffff, 0);

But then the background gets black. How do I change it to be transparent?


----------


The code:

       var camera, scene, renderer;
       var mouseX = 0, mouseY = 0;
       var p;
    
       var windowHalfX = site.Width / 2;
       var windowHalfY = site.Height / 2;
    
       Background.camera = new THREE.PerspectiveCamera( 35, site.Width / site.Height, 1, 2000 );
       Background.camera.position.z = 300;
       //camera.position.y = 200;
    
       // scene
       Background.scene = new THREE.Scene();
    
       // texture
       var manager = new THREE.LoadingManager();
       manager.onProgress = function ( item, loaded, total ) {
          console.log(&#39;webgl, twice??&#39;);
          //console.log( item, loaded, total );
       };
    
    
       // particles
       var p_geom = new THREE.Geometry();
       var p_material = new THREE.ParticleBasicMaterial({
          color: 0xFFFFFF,
          size: 1
       });
    
       // model
       var loader = new THREE.OBJLoader( manager );
       loader.load( site.base_url + &#39;/assets/models/head.obj&#39;, function ( object ) {
    
          object.traverse( function ( child ) {
    
             if ( child instanceof THREE.Mesh ) {
    
                // child.material.map = texture;
    
                var scale = 6;
    
                $(child.geometry.vertices).each(function() {
                   p_geom.vertices.push(new THREE.Vector3(this.x * scale, this.y * scale, this.z * scale));
                })
             }
          });
    
          Background.scene.add(p)
       });
    
       p = new THREE.ParticleSystem(
          p_geom,
          p_material
       );
    
       Background.renderer = new THREE.WebGLRenderer();
       Background.renderer.setSize( site.Width, site.Height );
       Background.renderer.setClearColor(0xffffff, 0);

       $(&#39;.particlehead&#39;).append(Background.renderer.domElement);
       $(&#39;#content&#39;).on(&#39;mousemove&#39;, onDocumentMouseMove);
       site.window.on(&#39;resize&#39;, onWindowResize);
    
       function onWindowResize() {
          windowHalfX = site.Width / 2;
          windowHalfY = site.Height / 2;
          //console.log(windowHalfX);
    
          Background.camera.aspect = site.Width / site.Height;
          Background.camera.updateProjectionMatrix();
    
          Background.renderer.setSize( site.Width, site.Height );
       }
    
       function onDocumentMouseMove( event ) {
          mouseX = ( event.clientX - windowHalfX ) / 2;
          mouseY = ( event.clientY - windowHalfY ) / 2;
          //console.log(mouseX)
       }
    
       Background.animate = function() { 
    
          //console.log(&#39;animate2&#39;);
          Background.ticker = TweenMax.ticker;
          Background.ticker.addEventListener(&quot;tick&quot;, Background.animate);
    
          render();
       }
    
       function render() {
          Background.camera.position.x += ( (mouseX * .5) - Background.camera.position.x ) * .05;
          Background.camera.position.y += ( -(mouseY * .5) - Background.camera.position.y ) * .05;
    
          Background.camera.lookAt( Background.scene.position );
    
          Background.renderer.render( Background.scene, Background.camera );
       }
    
       render();

Transparent background with three.js

I&#39;m tinkering with Joost van Dongen&#39;s[ Interior mapping shader]( http://interiormapping.oogst3d.net/) and I&#39;m trying to implement self-shadowing. Still I couldn&#39;t quite figure out what coordinates shadow casting light vectors need to be in. You can see somewhat working demo [at here][1]   I&#39;ve attached the light position with an offset to the camera position just to see whats happening but obviously it doesn&#39;t look right either.
Shader code is below. Look for SHADOWS DEV in fragment shader. Vectors in question are: **shad_E** and **shad_I**.

vertex shader:

    varying vec3 oP; // surface position in object space
    varying vec3 oE; // position of the eye in object space
    varying vec3 oI; // incident ray direction in object space
    
    varying vec3 shad_E; // shadow light position
    varying vec3 shad_I; // shadow direction
    
    uniform vec3 lightPosition;
    
    void main() {
    
    	// inverse veiw matrix
    	mat4 modelViewMatrixInverse = InverseMatrix( modelViewMatrix );
    
    	// surface position in object space
    	oP = position;
    
    	// position of the eye in object space
    	oE = modelViewMatrixInverse[3].xyz;
    
    	// incident ray direction in object space
    	oI = oP - oE; 
    
    	 // link the light position to camera for testing
    	 // need to find a way for world space directional light to work
    	shad_E = oE - lightPosition;
    
    	 // light vector
    	shad_I = oP - shad_E;
    
    	gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
    }

fragment shader:

    varying vec3 oP; // surface position in object space
    varying vec3 oE; // position of the eye in object space
    varying vec3 oI; // incident ray direction in object space
    
    varying vec3 shad_E; // shadow light position
    varying vec3 shad_I; // shadow direction
    
    uniform vec3 wallFreq;
    
    uniform float wallsBias;
    
    uniform vec3 wallCeilingColor;
    uniform vec3 wallFloorColor;
    uniform vec3 wallXYColor;
    uniform vec3 wallZYColor;
    
    float checker(vec2 uv, float checkSize) {
      float fmodResult = mod( floor(checkSize * uv.x) + floor(checkSize * uv.y), 2.0);
    
      if (fmodResult &lt; 1.0) {
    	return 1.0;
      } else {
    	return 0.85;
      }
    }
    
    void main() {
    
    	// INTERIOR MAPPING by Joost van Dongen
    	// http://interiormapping.oogst3d.net/
    	// email: joost@ronimo-games.com
    	// Twitter: @JoostDevBlog
    	
    	vec3 wallFrequencies = wallFreq / 2.0 - wallsBias;
    
    	//calculate wall locations
    	vec3 walls = ( floor( oP * wallFrequencies) + step( vec3( 0.0 ), oI )) / wallFrequencies;
    
    	//how much of the ray is needed to get from the oE to each of the walls
    	vec3 rayFractions = ( walls - oE) / oI;
    
    	//texture-coordinates of intersections
    	vec2 intersectionXY = (oE + rayFractions.z * oI).xy;
    	vec2 intersectionXZ = (oE + rayFractions.y * oI).xz;
    	vec2 intersectionZY = (oE + rayFractions.x * oI).zy;
    
    	//use the intersection as the texture coordinates for the ceiling
    	vec3 ceilingColour = wallCeilingColor * checker( intersectionXZ, 2.0 );
    	vec3 floorColour = wallFloorColor * checker( intersectionXZ, 2.0 );
    	vec3 verticalColour = mix(floorColour, ceilingColour, step(0.0, oI.y));
    	vec3 wallXYColour = wallXYColor * checker( intersectionXY, 2.0 );
    	vec3 wallZYColour = wallZYColor * checker( intersectionZY, 2.0 );
    
    	// SHADOWS DEV // SHADOWS DEV // SHADOWS DEV // SHADOWS DEV //
    
    	vec3 shad_P = oP;  // just surface position in object space
    	vec3 shad_walls = ( floor( shad_P * wallFrequencies) + step( vec3( 0.0 ), shad_I )) / wallFrequencies;
    	vec3 shad_rayFr = ( shad_walls - shad_E ) / shad_I;
    
    	// Cast shadow from ceiling planes (intersectionXZ)
    
    	wallZYColour *= mix( 0.3, 1.0, step( shad_rayFr.x, shad_rayFr.y ));
    	verticalColour *= mix( 0.3, 1.0, step( rayFractions.y, shad_rayFr.y ));
   		wallXYColour *= mix( 0.3, 1.0, step( shad_rayFr.z, shad_rayFr.y ));
    
   		// SHADOWS DEV // SHADOWS DEV // SHADOWS DEV // SHADOWS DEV //
    
    	// intersect walls
    	float xVSz = step(rayFractions.x, rayFractions.z);
    	vec3 interiorColour = mix(wallXYColour, wallZYColour, xVSz);
    	float rayFraction_xVSz = mix(rayFractions.z, rayFractions.x, xVSz);
    	float xzVSy = step(rayFraction_xVSz, rayFractions.y);
    
    	interiorColour = mix(verticalColour, interiorColour, xzVSy);
    
    	gl_FragColor.xyz = interiorColour;	
    
    }


  [1]: http://www.vill.ee/interior/

Interior Mapping shader self shadowing

![enter image description here][1]


  [1]: http://i.stack.imgur.com/mHexZ.gif


two objects in the scene.
the cube rotate axis should be the cube&#39;s center,that&#39;s my expect.

but the shoe model&#39;s rotate axis is the world&#39;s y axis.

my original code is.

    cube.rotation.y += 0.01;
    shoe.rotation.y += 0.01;

I found a solution in stackoverflow,like this:

    cube.rotation.y += 0.01;
    var pivot = new THREE.Object3D();
    pivot.add(shoe);
    pivot.rotation.y += 0.01;

But it doesn&#39;t work.
And then, I change the shoe&#39;s position. 

    cube.rotation.y += 0.01;
    var pivot = new THREE.Object3D();
    shoe.position.set(-5,0,0);
    pivot.add(shoe);
    pivot.rotation.y += 0.01;

The result is better now, but it still not perfect. And since there are a lot of shoe&#39;s model, I can&#39;t determine different position for every shoe model.

threejs how to rotate around object&#39;s own center,instead of world center

I&#39;m currently working on a simple 3D panorama viewer for a website. For mobile performance reasons I&#39;m using the Three.js [CSS&amp;nbsp;3 renderer][1]. This requires a cube map, split up into six single images.

I&#39;m recording the images on the iPhone with Google [Photo Sphere][2], or similar apps that create 2:1 equirectangular panoramas. I then resize and convert these to a cubemap with this website: http://gonchar.me/panorama/ (Flash)

Preferably, I&#39;d like to *do the conversion myself*, either on the fly in Three.js, if that&#39;s possible, or in Photoshop. I found Andrew Hazelden&#39;s Photoshop actions, and they seem kind of close, but no direct conversion is available. Is there a mathematical way to convert these, or some sort of script that does it? I&#39;d like to avoid going through a 3D application like [Blender][3], if possible.

Maybe this is a long shot, but I thought I&#39;d ask. I have okay experience with JavaScript, but I&#39;m pretty new to Three.js. I&#39;m also hesitant to rely on the [WebGL][4] functionality, since it seems either slow or buggy on mobile devices. Support is also still spotty.

  [1]: https://github.com/mrdoob/three.js/blob/master/examples/css3d_panorama.html
  [2]: https://en.wikipedia.org/wiki/Google_Camera#Photo_Sphere
  [3]: https://en.wikipedia.org/wiki/Blender_%28software%29
  [4]: https://en.wikipedia.org/wiki/WebGL






Content Type	Original Author	Original Content on Stackoverflow
Question	jack_was_taken	View Question on Stackoverflow
Solution 1 - Javascript	WestLangley	View Answer on Stackoverflow

Three.JS wireframe material - all polygons vs. just edges

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

How to extract dictionary single key-value pair in variables

When to use "window.onload"?

Attributions