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Re: displayobject boundary box?

by J-roen :: Rate this Message:

Hello Quinrou,

It is indeed class of Vertices3D, I used it in my extruder to measure
the size.
At that time I was creating a Vertice3D object, not a DisplayObject3D
If you are creating a primitive I doubt you would need to know the
boundingbox since you need width and height to create the primitive with.
Anyways you can access the AxisAlignedBoundingBox, like so:

pyramid.geometry.aabb.minX;

(provided you have created a primitive called pyramid, that you have
added to the scene)

http://www.flashbookmarks.com/PV3D-GreatWhite-DOC/org/papervision3d/core/math/AxisAlignedBoundingBox.html

J-roen
Andy Zupko schreef:

> most do3d extend vertices3d - so the function is available. If it
> doesn't extend vertices3d (its not a mesh) - then what are you trying
> to measure?
> On Jul 9, 2008, at 7:45 AM, quinrou . wrote:
>
>> Actually that method is built in Vertices3D... Is there anyway to
>> access it from DisplayObject3D?
>>
>> On Sat, Jul 5, 2008 at 6:57 PM, J-roen <me@...
>> <mailto:me@...>> wrote:
>>
>> Hello Seb,
>>
>> There is actually a method built into papervision that does
>> exactly that:
>> It is in DisplayObject3D.
>> So you can do something like:
>>
>> bbox = this.boundingBox();
>>
>> and then get properties like:
>> bbox.min.x / y / z
>> bbox.size.x / y / z
>>
>> documentation is here:
>> http://www.flashbookmarks.com/PV3D-GreatWhite-DOC/org/papervision3d/core/geom/Vertices3D.html#boundingBox()
>> <http://www.flashbookmarks.com/PV3D-GreatWhite-DOC/org/papervision3d/core/geom/Vertices3D.html#boundingBox%28%29>
>>
>> J-roen
>>
>> quinrou . schreef:
>> > Niceone Michael, thanks a lot for that.
>> > seb
>> >
>> > On Wed, Jul 2, 2008 at 7:32 PM, T. Michael Pardon
>> > <codejockey1@... <mailto:codejockey1@...>
>> <mailto:codejockey1@... <mailto:codejockey1@...>>> wrote:
>> >
>> > I found this utility class a while back when I was trying to do
>> > the same thing. I don't remember who posted it originally,
>> but if
>> > I find the original post I will update this thread.
>> >
>> > package
>> > {
>> > import
>> org.papervision3d.core.geom.renderables.Vertex3D;
>> > import org.papervision3d.objects.DisplayObject3D;
>> >
>> > public class BoundingBox
>> > {
>> > public var maxX :Number = 0;
>> > public var minX :Number = 0;
>> > public var maxY :Number = 0;
>> > public var minY :Number = 0;
>> > public var maxZ :Number = 0;
>> > public var minZ :Number = 0;
>> >
>> > public var sizeX :Number = 0;
>> > public var sizeY :Number = 0;
>> > public var sizeZ :Number = 0;
>> >
>> > public function BoundingBox(
>> object:DisplayObject3D )
>> > {
>> > parseMesh( object );
>> >
>> > sizeX = maxX - minX;
>> > sizeY = maxY - minY;
>> > sizeZ = maxZ - minZ;
>> > }
>> >
>> > private function
>> > parseMesh(object:DisplayObject3D):void
>> > {
>> > if (object.children)
>> > for each(var
>> child:DisplayObject3D
>> > in object.children)
>> > parseMesh(child);
>> >
>> > if ( !object.geometry)
>> > return;
>> >
>> > for each(var vertex:Vertex3D in
>> > object.geometry.vertices)
>> > {
>> > maxX = Math.max(maxX,
>> vertex.x);
>> > minX = Math.min(minX,
>> vertex.x);
>> > maxY = Math.max(maxY,
>> vertex.y);
>> > minY = Math.min(minY,
>> vertex.y);
>> > maxZ = Math.max(maxZ,
>> vertex.z);
>> > minZ = Math.min(minZ,
>> vertex.z);
>> > }
>> > }
>> > }
>> > }
>> >
>> > _______________________________________________
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>> >
>> >
>>
>>
>>
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