Away3D Forum minX causing error

FlyOn, Jr. Member
Posted: 06 December 2011 10:02 PM Total Posts: 36

var container:ObjectContainer3D = new ObjectContainer3D();
container.addChild(new Sphere(new ColorMaterial(0x00ff00)));
trace(container.minX); 

is that a bug or should I do something different?

TypeError: Error #1009: Cannot access a property or method of a null object reference.
 at away3d.bounds::BoundingVolumeBase/fromGeometry()[D:\1. WEBDESIGN\Projects\DaVine\lib\away3d\bounds\BoundingVolumeBase.as:145]
 at away3d.entities::Mesh/updateBounds()[D:\1. WEBDESIGN\Projects\DaVine\lib\away3d\entities\Mesh.as:202]
 at away3d.entities::Entity/get minX()[D:\1. WEBDESIGN\Projects\DaVine\lib\away3d\entities\Entity.as:87]
 at away3d.containers::ObjectContainer3D/get minX()[D:\1. WEBDESIGN\Projects\DaVine\lib\away3d\containers\ObjectContainer3D.as:305] 

FlyOn, Jr. Member
Posted: 07 December 2011 09:16 AM Total Posts: 36 [ # 1 ]

testfile:

package 
{
 import away3d.cameras.Camera3D;
 import away3d.containers.ObjectContainer3D;
 import away3d.containers.View3D;
 import away3d.primitives.Sphere;
 import flash.display.Sprite;
 import flash.events.Event;
 
 public class MinXBug extends Sprite 
 {
  public  var _view:View3D;
  public  var camera:Camera3D;
  
  public function MinXBug():void 
  {
   _view = new View3D();
   this.addChild(_view);   
   
   var container:ObjectContainer3D = new ObjectContainer3D();
   var sphere:Sphere = new Sphere();
   container.addChild(sphere);
   _view.scene.addChild(container);
   
   trace(container.maxX);
   trace(container.minX);
   
  }
  
 }
 
} 

John Brookes, Moderator
Posted: 07 December 2011 11:28 AM Total Posts: 732 [ # 2 ]

If you do a single render before doing the trace it works.
Guess it needs to update.

John Brookes, Moderator
Posted: 07 December 2011 11:44 AM Total Posts: 732 [ # 3 ]

Bounds.getObjectContainerBounds(container)
trace(container.maxX);
trace(container.minX);

FlyOn, Jr. Member
Posted: 07 December 2011 12:02 PM Total Posts: 36 [ # 4 ]

Thanks!

Yes with render it works indeed ... but that means I should either do an extra render for every minX call, or an extra render after every child I add right?

with Bounds I’m not always getting a correct answer (-0.5 for minX, which should be around -300)

for now I’ve implemented this not so pretty, but working solution in my View class which extends ObjectContainer3D for minx maxX etc:

for each(var child:ObjectContainer3D in children)
{
 if (child is Entity)
 {
  _minX = Math.min(child.y - (child as Entity).bounds.min.y, _minX);
 }
 else if (child is View)
 {
  _minX = Math.min(child.y - (child as View).minX, _minX);
 }
} 

minX causing error Software: Away3D 4.x

FlyOn, Jr. Member Posted: 06 December 2011 10:02 PM Total Posts: 36 `var container:ObjectContainer3D = new ObjectContainer3D(); container.addChild(new Sphere(new ColorMaterial(0x00ff00))); trace(container.minX);` is that a bug or should I do something different? TypeError: Error #1009: Cannot access a property or method of a null object reference. at away3d.bounds::BoundingVolumeBase/fromGeometry()[D:\1. WEBDESIGN\Projects\DaVine\lib\away3d\bounds\BoundingVolumeBase.as:145] at away3d.entities::Mesh/updateBounds()[D:\1. WEBDESIGN\Projects\DaVine\lib\away3d\entities\Mesh.as:202] at away3d.entities::Entity/get minX()[D:\1. WEBDESIGN\Projects\DaVine\lib\away3d\entities\Entity.as:87] at away3d.containers::ObjectContainer3D/get minX()[D:\1. WEBDESIGN\Projects\DaVine\lib\away3d\containers\ObjectContainer3D.as:305]
FlyOn, Jr. Member Posted: 07 December 2011 09:16 AM Total Posts: 36 [ # 1 ] testfile: package { import away3d.cameras.Camera3D; import away3d.containers.ObjectContainer3D; import away3d.containers.View3D; import away3d.primitives.Sphere; import flash.display.Sprite; import flash.events.Event; public class MinXBug extends Sprite { public var _view:View3D; public var camera:Camera3D; public function MinXBug():void { _view = new View3D(); this.addChild(_view); var container:ObjectContainer3D = new ObjectContainer3D(); var sphere:Sphere = new Sphere(); container.addChild(sphere); _view.scene.addChild(container); trace(container.maxX); trace(container.minX); } } }
John Brookes, Moderator Posted: 07 December 2011 11:28 AM Total Posts: 732 [ # 2 ] If you do a single render before doing the trace it works. Guess it needs to update.
John Brookes, Moderator Posted: 07 December 2011 11:44 AM Total Posts: 732 [ # 3 ] Bounds.getObjectContainerBounds(container) trace(container.maxX); trace(container.minX);
FlyOn, Jr. Member Posted: 07 December 2011 12:02 PM Total Posts: 36 [ # 4 ] Thanks! Yes with render it works indeed ... but that means I should either do an extra render for every minX call, or an extra render after every child I add right? with Bounds I’m not always getting a correct answer (-0.5 for minX, which should be around -300) for now I’ve implemented this not so pretty, but working solution in my View class which extends ObjectContainer3D for minx maxX etc: `for each(var child:ObjectContainer3D in children) { if (child is Entity) { _minX = Math.min(child.y - (child as Entity).bounds.min.y, _minX); } else if (child is View) { _minX = Math.min(child.y - (child as View).minX, _minX); } }`

minX causing error

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