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Tag Archive for 'BitmapFileMaterial'

A Simple Papervision Carousel

Published
by
Charlie
on December 24, 2009
in 3D Carousel, AS3, Actionscript 3 Papervision, Actionscript 3.0, Papervision, Papervision 3D, Source Code and Tutorials
. 9 Comments

Papervision 3D Carousel

download-source

This week I set out to create a Papervision Carousel in it's simplest form. At the heart of this carousel is a simple "for" loop / math which places the items in a circle in 3D space

PLAIN TEXT
Actionscript:
  1. for (var i:int = 0; i <planes.length; i++)
  2. {
  3.     var angle:Number    = Math.PI * 2 / numItems * i;
  4.     var plane:Plane     = planes[i];
  5.     plane.x             = Math.cos(angle) * radius;
  6.     plane.z             = Math.sin(angle) * radius;
  7.     plane.rotationY     = -360 / numItems * i - 90;
  8. }

Then to rotate our carousel we apply some similar math

PLAIN TEXT
Actionscript:
  1. var rotateTo:Number = (-360 / numItems) * currentItem + 90;
  2. TweenLite.to(planesHolder, 1, { rotationY:rotateTo, ease:Quint.easeInOut } );

This code allows us to just increment currentItem and rotate our carousel. Another easy add-on would be to setup a navigation along the bottom where you could control and change the currentItem to a specific number to rotate right to that section of the carousel.

It's also very easy to customize the number of items and radius of the carousel by adjusting these numbers.

PLAIN TEXT
Actionscript:
  1. protected var numItems:Number = 20;
  2. protected var radius:Number = 500;

Here is the full code.

PLAIN TEXT
Actionscript:
  1. package
  2. {
  3.     import flash.display.DisplayObject;
  4.     import flash.display.MovieClip;
  5.     import flash.display.Sprite;
  6.     import flash.events.Event;
  7.     import flash.events.MouseEvent;
  8.     import gs.easing.Quint;
  9.     import gs.TweenLite;
  10.     import org.papervision3d.materials.BitmapFileMaterial;
  11.     import org.papervision3d.objects.DisplayObject3D;
  12.     import org.papervision3d.objects.primitives.Plane;
  13.     import org.papervision3d.view.BasicView;
  14.    
  15.     /**
  16.      * ...
  17.      * @author Charlie Schulze, charlie[at]woveninteractive[dot]com
  18.      */
  19.    
  20.     public class Main extends BasicView
  21.     {
  22.         protected var planes:Array = [];
  23.         protected var numItems:Number = 20;
  24.         protected var radius:Number = 500;
  25.         protected var currentItem:Number = 0;
  26.        
  27.         protected var mat:BitmapFileMaterial;
  28.         protected var planesHolder:DisplayObject3D;
  29.         protected var rightBtn:Sprite;
  30.         protected var leftBtn:Sprite;
  31.        
  32.         public function Main():void
  33.         {
  34.             super();
  35.             init();
  36.         }
  37.         protected function init():void
  38.         {
  39.             createChildren();
  40.             createButtons();
  41.             commitProperties();
  42.             startRendering();
  43.         }
  44.         protected function createChildren():void
  45.         {
  46.            
  47.             planesHolder = new DisplayObject3D();
  48.            
  49.             //Create Material
  50.             mat             = new BitmapFileMaterial("images/queen.gif");
  51.             mat.smooth   = true;
  52.             mat.doubleSided = true;
  53.            
  54.             for (var i:int = 0; i <numItems; i++)
  55.             {
  56.                 var plane:Plane = new Plane(mat, 150, 234);
  57.                 planes.push(plane);
  58.                
  59.                 //Add plane to the scene
  60.                 planesHolder.addChild(plane);
  61.             }
  62.             scene.addChild(planesHolder);
  63.         }
  64.        
  65.         protected function commitProperties():void
  66.         {
  67.             //Set properties of our planes
  68.             for (var i:int = 0; i <planes.length; i++)
  69.             {
  70.                 var angle:Number    = Math.PI * 2 / numItems * i;
  71.                 var plane:Plane     = planes[i];
  72.                 plane.x             = Math.cos(angle) * radius;
  73.                 plane.z             = Math.sin(angle) * radius;
  74.                 plane.rotationY     = -360 / numItems * i - 90;
  75.             }
  76.            
  77.             //Adjust camera
  78.             camera.y = 200;
  79.            
  80.             //Rotate once
  81.             rotate();
  82.         }
  83.  
  84.         //Rotates the carousel
  85.         protected function rotate():void
  86.         {
  87.             var rotateTo:Number = (-360 / numItems) * currentItem + 90;
  88.             TweenLite.to(planesHolder, 1, { rotationY:rotateTo, ease:Quint.easeInOut } );
  89.         }
  90.        
  91.         /*
  92.          * Everything below this point is just for creating the buttons and
  93.          * setting button events for controlling the carousel.
  94.          */
  95.  
  96.         protected function createButtons():void
  97.         {
  98.             //Create Buttons
  99.             rightBtn = createButton();
  100.             leftBtn = createButton();
  101.                
  102.             addChild(leftBtn);
  103.             addChild(rightBtn);
  104.            
  105.             //Add button listeners
  106.             rightBtn.buttonMode = true;
  107.             leftBtn.buttonMode = true;
  108.             rightBtn.addEventListener(MouseEvent.CLICK, buttonClick);
  109.             leftBtn.addEventListener(MouseEvent.CLICK, buttonClick);
  110.                        
  111.             //Place buttons on stage
  112.             rightBtn.x    = stage.stageWidth - 120;
  113.             leftBtn.x       = 100;
  114.             rightBtn.y    =  stage.stageHeight / 2;
  115.             leftBtn.y       =  (stage.stageHeight / 2) + 20;
  116.             leftBtn.rotation    = 180;
  117.         }
  118.        
  119.         //Button actions
  120.         protected function buttonClick(evt:MouseEvent):void
  121.         {
  122.             switch (evt.target)
  123.             {
  124.                 case rightBtn:
  125.                 currentItem --;
  126.                 break;
  127.                
  128.                 case leftBtn:
  129.                 currentItem ++;
  130.                 break;
  131.             }
  132.             rotate();
  133.         }
  134.        
  135.         //Creates a simple arrow shape / returns the sprite
  136.         protected function createButton():Sprite
  137.         {
  138.             var btn:Sprite = new Sprite();
  139.            
  140.             btn.graphics.beginFill(0x333333);
  141.             btn.graphics.moveTo(0, 0);
  142.             btn.graphics.lineTo(0, 20);
  143.             btn.graphics.lineTo(10, 10);
  144.             btn.graphics.lineTo(0, 0);
  145.             btn.graphics.endFill();
  146.             return btn;
  147.         }
  148.     }
  149. }

Feel free to post links to ways you expand upon this file.

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Panorama Viewer

Published
by
Charlie
on February 27, 2008
in Examples
. 12 Comments

*FIXED!!*

Here's a really simple example, all it does is texture a sphere and rotate it depending on what the camera is doing:

Click Here (1.3Mb download so I didn't embed this one)

Source Code (Uses the Base Class):

PLAIN TEXT
Actionscript:
  1. /**
  2. * ...
  3. * @author Luke Mitchell
  4. * @version 1
  5. */
  6.  
  7. packageВ  {
  8. \timport org.papervision3d.materials.BitmapFileMaterial;
  9. \timport flash.events.MouseEvent;
  10. \timport org.papervision3d.materials.ColorMaterial;
  11. \timport org.papervision3d.materials.utils.MaterialsList;
  12. \timport org.papervision3d.objects.primitives.Cube;
  13. \t
  14. \tpublic class Main extends PaperBase {
  15. \t\t
  16. \t\tpublic var materials:MaterialsList = new MaterialsList(
  17. \t\t{
  18. \t\t\tfront: new BitmapFileMaterial("http://papervision2.com/wp-content/pano/s1.gif"),
  19. \t\t\tback: new BitmapFileMaterial("http://papervision2.com/wp-content/pano/s3.gif"),
  20. \t\t\tleft: new BitmapFileMaterial("http://papervision2.com/wp-content/pano/s4.gif"),
  21. \t\t\tright: new BitmapFileMaterial("http://papervision2.com/wp-content/pano/s2.gif"),
  22. \t\t\ttop: new ColorMaterial(0x000000),
  23. \t\t\tbottom: new ColorMaterial(0x000000)
  24. \t\t});
  25. \t\tpublic var cubemap:Cube = new Cube(materials, 2000, 2000, 900, 5, 5, 5,Cube.ALL);
  26. \t\t
  27. \t\tpublic function Main() {
  28. \t\t\tinit(600,300);
  29. \t\t\tcubemap.x = 0;
  30. \t\t\tcubemap.y = 0;
  31. \t\t\tcubemap.z = 0;
  32. \t\t\t
  33. \t\t\tdefault_scene.addChild(cubemap);
  34. \t\t\tdefault_camera.z = 0;
  35. \t\t\tdefault_camera.x = 0;
  36. \t\t\tdefault_camera.y = 0;
  37. \t\t\tdefault_camera.lookAt(cubemap);
  38. \t\t\t
  39. \t\t\tdefault_camera.zoom = 5;
  40. \t\t\tstage.addEventListener(MouseEvent.MOUSE_WHEEL, mWheel);
  41. \t\t}
  42. \t\t
  43. \t\tpublic function mWheel(e:MouseEvent):void {
  44. \t\t\tdefault_camera.zoom += e.delta / 5;
  45. \t\t\tif (default_camera.zoom &lt;5) {
  46. \t\t\t\tdefault_camera.zoom = 5;
  47. \t\t\t}else if (default_camera.zoom&gt; 20) {
  48. \t\t\t\tdefault_camera.zoom = 20;
  49. \t\t\t}
  50. \t\t}
  51. \t\t
  52. \t\toverride protected function processFrame():void {
  53. \t\t\tcubemap.yaw( -((stage.mouseX - (stage.width / 2)) / stage.width)*4);
  54. \t\t\tdefault_camera.rotationX = -((stage.mouseY - (stage.height / 2)) / stage.height) * (Math.sqrt(default_camera.zoom*6));
  55. \t\t}
  56. \t}
  57. }

You can use this for pretty much any panoramic image, just change the image url and tweak it a bit :)

-Luke

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10. Advanced Interactivity

Published
by
Charlie
on February 17, 2008
in Tutorials
. 72 Comments

**UPDATE
This tutorial has been updated:
Updates:
1) Removed InteractiveScene3DEvent and replaced it with standard MouseEvents
2) Updated to use papervision's BasicView.as class

view-update

Today we're going to learn how to handle more advanced interactivity. We'll be making something like this:

Click on a face of the cube to zoom into it. Click it again to make the cube spin again.

So, in this tutorial I'm going to show you exactly how to work out which material has been clicked on the cube and act accordingly.

If you haven't read it already, I strongly suggest that you read the Basic Interactivity tutorial first or you'll probably miss something.

Ok, so on to the code.

Firstly we'll want six materials to apply to each face of the cube. Here are mine, although you can create whatever materials you like:

PLAIN TEXT
Actionscript:
  1. private var frontMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/front.jpg");
  2.         private var backMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/back.jpg");
  3.         private var leftMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/left.jpg");
  4.         private var rightMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/right.jpg");
  5.         private var topMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/top.jpg");
  6.         private var bottomMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/bottom.jpg");

So, in this code I'm just loading six images from my server to use as each face.

Also, add the following declaration beneath the texture declarations to hold our Cube object:

PLAIN TEXT
Actionscript:
  1. private var cube:Cube;

Now we need to set up the 3d initiation code. In this code we will firstly set all of our materials as interactive, and then give each of our materials a name. This is VERY important to be able to easily find out which material has been clicked. If we didn't give each material a name then we wouldn't be able to easily work out which face has been clicked.

So, add the following code to your init3d() function:

PLAIN TEXT
Actionscript:
  1. override protected function init3d():void {
  2.             // We need to be able to identify each side. We'll do this
  3.             // by asssigning names to each material. During this process
  4.             // we'll also make the materials interactive.
  5.             frontMaterial.interactive = true;
  6.             frontMaterial.name = "front";
  7.             backMaterial.interactive = true;
  8.             backMaterial.name = "back";
  9.             leftMaterial.interactive = true;
  10.             leftMaterial.name = "left";
  11.             rightMaterial.interactive = true;
  12.             rightMaterial.name = "right";
  13.             topMaterial.interactive = true;
  14.             topMaterial.name = "top";
  15.             bottomMaterial.interactive = true;
  16.             bottomMaterial.name = "bottom";
  17.             // ---------------------------------------------
  18.            
  19.             cube = new Cube(new MaterialsList( {
  20.                 front: frontMaterial,
  21.                 back: backMaterial,
  22.                 left: leftMaterial,
  23.                 right: rightMaterial,
  24.                 top: topMaterial,
  25.                 bottom: bottomMaterial
  26.                 } ), 500, 500, 500, 3, 3, 3);
  27.             cube.addEventListener( InteractiveScene3DEvent.OBJECT_PRESS, onPress);
  28.             default_scene.addChild(cube);
  29.         }

So, In this code, we've set each material as interactive, given each one a sensible name, and initialised our cube with the materials assigned to the correct faces.

We then add an event listener to trigger the "onPress" event when the cube is clicked, then finally we add the cube to the scene.

We've now got a cube with six materials on it listening for a click event.

Now, the code which will let us work out which face has been clicked:

PLAIN TEXT
Actionscript:
  1. private function onPress( e:InteractiveScene3DEvent ):void {
  2.     switch(e.face3d.material.name) {
  3.         case "front":
  4.             // This code will be run when the front face is clicked
  5.         break;
  6.         case "back":
  7.             // This code will be run when the back face is clicked
  8.         break;
  9.         case "left":
  10.             // This code will be run when the left face is clicked
  11.         break;
  12.         case "right":
  13.             // This code will be run when the right face is clicked
  14.         break;
  15.         case "top":
  16.             // This code will be run when the top face is clicked
  17.         break;
  18.         case "bottom":
  19.             // This code will be run when the bottom face is clicked
  20.         break;
  21.     }
  22. }

Pretty self explanitary. The "e" variable in this code holds lots of data about the click event, including which material has been clicked, so, because we know which material is on each face, we can tell by the materials name which face has been clicked!

With a little bit of code, you can make a nice spinning cube gallery like the example above:

Here is my final code, have fun!

PLAIN TEXT
Actionscript:
  1. package  {
  2.    
  3.     import flash.display.DisplayObject;
  4.     import org.papervision3d.materials.BitmapFileMaterial;
  5.     import org.papervision3d.materials.utils.MaterialsList;
  6.     import org.papervision3d.events.InteractiveScene3DEvent;
  7.     import org.papervision3d.objects.primitives.Cube;
  8.    
  9.     public class Main extends PaperBase {
  10.        
  11.         private var frontMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/front.jpg");
  12.         private var backMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/back.jpg");
  13.         private var leftMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/left.jpg");
  14.         private var rightMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/right.jpg");
  15.         private var topMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/top.jpg");
  16.         private var bottomMaterial:BitmapFileMaterial = new BitmapFileMaterial("http://papervision2.com/wp-content/pvTex/bottom.jpg");
  17.        
  18.         private var targetrotationX:Number = 0;
  19.         private var targetrotationY:Number = 0;
  20.         private var targetrotationZ:Number = 0;
  21.        
  22.         private var tweening:Boolean = false;
  23.        
  24.         private var cube:Cube;
  25.        
  26.         public function Main() {
  27.             init(400, 400);
  28.         }
  29.        
  30.         override protected function init3d():void {
  31.             // We need to be able to identify each side. We'll do this
  32.             // by asssigning names to each material. During this process
  33.             // we'll also make the materials interactive.
  34.             frontMaterial.interactive = true;
  35.             frontMaterial.name = "front";
  36.             backMaterial.interactive = true;
  37.             backMaterial.name = "back";
  38.             leftMaterial.interactive = true;
  39.             leftMaterial.name = "left";
  40.             rightMaterial.interactive = true;
  41.             rightMaterial.name = "right";
  42.             topMaterial.interactive = true;
  43.             topMaterial.name = "top";
  44.             bottomMaterial.interactive = true;
  45.             bottomMaterial.name = "bottom";
  46.             // ---------------------------------------------
  47.            
  48.             cube = new Cube(new MaterialsList( {
  49.                 front: frontMaterial,
  50.                 back: backMaterial,
  51.                 left: leftMaterial,
  52.                 right: rightMaterial,
  53.                 top: topMaterial,
  54.                 bottom: bottomMaterial
  55.                 } ), 500, 500, 500, 3, 3, 3);
  56.             // Listen for the click:
  57.             cube.addEventListener( InteractiveScene3DEvent.OBJECT_PRESS, onPress);
  58.             // Add to scene:
  59.             default_scene.addChild(cube);
  60.         }
  61.        
  62.         private function onPress( e:InteractiveScene3DEvent ):void {
  63.             // If the cube has been moved to the front:
  64.             if (tweening) {
  65.                 // Let it rotate again
  66.                 tweening = false;
  67.             }else {
  68.                 // Find which rotation we need to be able to see
  69.                 // the face image:
  70.                 switch(e.face3d.material.name) {
  71.                     case "front":
  72.                         targetrotationX = 0;
  73.                         targetrotationY = 180;
  74.                         targetrotationZ = 0;
  75.                         tweening = true;
  76.                     break;
  77.                     case "back":
  78.                         targetrotationX = 0;
  79.                         targetrotationY = 0;
  80.                         targetrotationZ = 0;
  81.                         tweening = true;
  82.                     break;
  83.                     case "left":
  84.                         targetrotationX = 0;
  85.                         targetrotationY = -90;
  86.                         targetrotationZ = 0;
  87.                         tweening = true;
  88.                     break;
  89.                     case "right":
  90.                         targetrotationX = 0;
  91.                         targetrotationY = 90;
  92.                         targetrotationZ = 0;
  93.                         tweening = true;
  94.                     break;
  95.                     case "top":
  96.                         targetrotationX = 90;
  97.                         targetrotationY = 0;
  98.                         targetrotationZ = 0;
  99.                         tweening = true;
  100.                     break;
  101.                     case "bottom":
  102.                         targetrotationX = -90;
  103.                         targetrotationY = 0;
  104.                         targetrotationZ = 180;
  105.                         tweening = true;
  106.                     break;
  107.                 }
  108.             }
  109.         }
  110.        
  111.         override protected function processFrame():void {
  112.             if (tweening) {
  113.                 // If a face has been clicked
  114.                 if (default_camera.zoom &lt;6.8) {
  115.                     // If the camera isn't zoomed enough then zoom in a bit more:
  116.                     default_camera.zoom += Math.sqrt(6.8-default_camera.zoom)/5;
  117.                 }
  118.                
  119.                 // Test each rotation and rotate it towards the target rotation:
  120.                 // X axis:
  121.                 if (cube.rotationX &lt;targetrotationX) {
  122.                     cube.rotationX += Math.sqrt(targetrotationX-cube.rotationX);
  123.                     cube.rotationX = Math.round(cube.rotationX);
  124.                 }else if (cube.rotationX&gt; targetrotationX) {
  125.                     cube.rotationX -= Math.sqrt(cube.rotationX-targetrotationX);
  126.                     cube.rotationX = Math.round(cube.rotationX);
  127.                 }
  128.                 // Y axis:
  129.                 if (cube.rotationY &lt;targetrotationY) {
  130.                     cube.rotationY += Math.sqrt(targetrotationY-cube.rotationY);
  131.                     cube.rotationY = Math.round(cube.rotationY);
  132.                 }else if (cube.rotationY&gt; targetrotationY) {
  133.                     cube.rotationY -= Math.sqrt(cube.rotationY-targetrotationY);
  134.                     cube.rotationY = Math.round(cube.rotationY);
  135.                 }
  136.                 // Z axis:
  137.                 if (cube.rotationZ &lt;targetrotationZ) {
  138.                     cube.rotationZ += Math.sqrt(targetrotationZ-cube.rotationZ);
  139.                     cube.rotationZ = Math.round(cube.rotationZ);
  140.                 }else if (cube.rotationZ&gt; targetrotationZ) {
  141.                     cube.rotationZ -= Math.sqrt(cube.rotationZ-targetrotationZ);
  142.                     cube.rotationZ = Math.round(cube.rotationZ);
  143.                 }
  144.             }else {
  145.                 // If the camera is zoomed in, it shouldn't be now
  146.                 if (default_camera.zoom&gt; 2) {
  147.                     // So zoom out a bit.
  148.                     default_camera.zoom -= Math.sqrt(default_camera.zoom-2)/5;
  149.                 }
  150.                
  151.                 // Rotate the cube a bit:
  152.                 cube.rotationX += 2;
  153.                 cube.rotationY += 2;
  154.                
  155.                 // Make sure that we dont "wind up" the rotation
  156.                 if (cube.rotationX&gt;= 360) cube.rotationX = 0;
  157.                 if (cube.rotationY&gt;= 360) cube.rotationY = 0;
  158.             }
  159.         }
  160.     }
  161. }

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