Positioning the camera above the scene and rotating produces some amusing results

I assume adding full spherical rotation would be impractical?

Cool stuff! Although I’m having problems adding the DisplayObject2Ds to a parental DisplayObject3D object.

In the createChildren function I’ve added on top:

rootNode = new DisplayObject3D(”rootNode”);
scene.addChild(rootNode);

and below;
var do2D:DisplayObject2D = new DisplayObject2D(circle as DisplayObject,10);
rootNode.addChild(do2D);

Now.. this compiles. But during run-time. It gives the following error:

TypeError: Error #1009: Cannot access a property or method of a null object reference.
at com.blitzagency.papervision3d::DisplayObject2D/com.blitzagency.papervision3d:DisplayObject2D::projectDisplayObject()
at com.blitzagency.papervision3d::DisplayObject2D/project()
at org.papervision3d.objects::DisplayObject3D/project()
at org.papervision3d.core.proto::SceneObject3D/renderCamera()
at com.blitzagency.papervision3d::PapervisionMovieScene/com.blitzagency.papervision3d:PapervisionMovieScene::render()

And yea.. i have declared rootNode as a DisplayObject3D variable.. any suggestions?

Hi Patrick, thanks for this code its great.

Not sure if you’re aware of this but with at least the 2nd demo DisplayObjectSequenceTest I’m getting memory leaks. The total memory used by the flash runtime is forever increasing.

I’ve only been using Flash for a few weeks so I’m not sure how far I’ll get with this but I’m trying to get to the bottom of it as I need to for a project I’m working on. If I get anywhere then I’ll post back. Any pointers would be greatly appreciated – I’m starting from the point of http://osflash.org/pipermail/papervision3d_osflash.org/2007-June/007486.html – as being the potential cause. It says this only in the Flash IDE – but it looks as though its affecting the browser too, so I’ll have to find a fix.

hi,i try to addEventListener like this code
var do2D:DisplayObject2D = new DisplayObject2D(circle as DisplayObject,10);
do2D.createContainer();
var _sprite:Sprite = do2D.container;
_sprite.addEventListener(MouseEvent.CLICK,onClick);
,but nothing happened
what’s wrong?

thanks,I successed to addEventListener ,Thanks

good stuff – thanks! On my machine I needed to change the example FLA classpaths for them to compile. Changed it from ‘classes’ to ‘./classes’

Hi there guys! I´m doing my first steps with papervision doing a videogame but I have a problem, after adding my display object 2d to the scene I start to add new clips to this child with a timer event. Well…after launching.. each onComplete function I tried to remove the movieclip inside the displayobject2d but…even when the movieclip dissapear with removeChild(name) it gaves me a increasing numChildren Number inside the object 2d! that makes the game run slower..

Does someone how to remove at all child from a displayobject2d? this is the code with comments…

private function creaEffects(event:TimerEvent) {
var _particula:particula = new particula(); //the movieclip I´m adding
var Particula = new DisplayObject2D(_particula,5);

scene.addChild(Particula);
var intervalId:uint = setTimeout(Removo, 500, Particula)
}
private function Removo():void{
scene.removeChild(arguments[0])
trace(scene.numChildren); // even when the clip dissapear it gave me a increasing number
}

thx in advance!

hi, got a question.

i am busy with some papervision3d project in which i do have a problem:some camera floats above a bunch of primitives and flies above them, however objects distort and i cannot properly render them, i think i do have some problem with containers, but since i am also new to the PV3D, i cannot figure it out. the relevant thing to the post made here is it that whenever you push the up arrow in the examples above, you can basically move through (or above) objects without the distortion, so i thought some might help.

this is the as3 code i am talking about:

//for 3D app.
import org.papervision3d.scenes.*;
import org.papervision3d.cameras.*;
import org.papervision3d.objects.*;
import org.papervision3d.materials.*;

//container for the 3d scene
var container:Sprite = new Sprite();
container.x = stage.stageWidth*0.5;
container.y = stage.stageHeight;
addChild(container);

//basic camera
var scene:Scene3D = new Scene3D(container);
var cameraview:Camera3D =new Camera3D;
cameraview.x = 0;
cameraview.y = 500;
cameraview.focus = 200;

var cameraX:Number=0;
addEventListener(Event.ENTER_FRAME, tilt);
addEventListener(Event.ENTER_FRAME, progress);

// preparation of standard material list for buildings
var facebuild:WireframeMaterial = new WireframeMaterial(0×999999);
var materiallist:MaterialsList = new MaterialsList();
materiallist.addMaterial(facebuild,”top”);
materiallist.addMaterial(facebuild,”bottom”);
materiallist.addMaterial(facebuild,”front”);
materiallist.addMaterial(facebuild,”back”);
materiallist.addMaterial(facebuild,”left”);
materiallist.addMaterial(facebuild,”right”);

//create array for buildings, push them into array for removing from scene.
var buildinglist:Array = new Array();

//create cube and set coordinates
for (var i:Number = 0; i<5; i++) {
var cube:Cube = new Cube(materiallist, 300, 300, 500, 1,1,1);
cube.x = -850 + (4000*Math.random());
cube.y = 0;
cube.z = 1000*Math.random();
scene.addChild(cube);
buildinglist.push(cube);
}

/*
//motion: forward
function progress(event:Event):void {
for (var k:Number =0; k<5; k++) {
//trace(buildinglist.length);
buildinglist[k].z -= Math.cos(radiansproject)*10;
buildinglist[k].x += Math.sin(radiansproject)*10;
scene.renderCamera( cameraview );
}
}
*/

//motion: left/right
function tilt(event:Event):void {
//cameraview.x +=(-cameraX); //cameraX external variable causing turning left and right.
cameraview.z +=10;
scene.renderCamera (cameraview);
}

at the examples provided the forward motion is accomplished though keyboard, but lets assume for the sample code i have provided, that my objects move towards the camera (decreasing z coordinates) constantly.

there are some excess stuff there , i have experimented a bit. you can basically ignore the commented pieces..

its a long post, and i am rather fresh to the PV3D enviroment, and if somehow would somehow help me, i will be grateful.

cheers.

Great stuff, this is perfect for a project I’m working on right now! I hope the people developing Papervision 2 are intending to have this class in their core package, because it’s a super useful way of integrating the way designers are used to working with Flash into a 3D workflow.

Incidentally, note that you have to adjust the classpath for DisplayObject2DTest to get it to work. Unless I’m the one with an older version of Flash (entirely possible,) I’m guessing your project was created before a slight change was made to how classpaths are defined. In your Publish Settings you list the classpath as “classes”, but it should be “.\classes”

Oh, and for anyone trying to use this class and realizing it doesn’t work with the latest alpha of Papervision, note that 1.7 beta is included in the download.

Excellent!

Can we use the codes under com.blitzagency.papervision3d.* freely or for commercial?

I needed object 2d and the simplest way to do it is the screen.x and screen.y properties of the DisplayObject3D. In PV3D 2 in order to use this in every frame you must explicitly call calculateScreenCoords(camera) method.