Hey slhenty
sorry for not answering your post sooner
the problems you are experiencing are due to the default way 3ds meshes are
stored - all mesh objects have the same registration point (positioning)
when imported into away3d, and when calculating bounding boxes (and minX
maxX etc positions), bounding radii are used from the child objects to
simplify calculations. Bounding radii are calculated by determining the
distance to the vertex in a mesh the furthest away from the meshe's origin
(0, 0, 0) point. However, because all meshes have the same positioning,
this calulation will not accurately calculate bounding box values for the
parent object
to combat this problem, a property called centerMeshes was introduced to the
loader classes. This would take the points in a mesh, and relocate their
registration point to the central point of the mesh geometry. This gives
better bounding radii calculations, and hence better bounding box
calulations for the parent.
that's the long answer. ;) The short answer is: centerMeshes is a property
that help with these calulations. In 1.9.4 it used to be set to true by
default. But this was causing problems with imports elsewhere, so in 2.0 it
was altered to be false by default. To achive the same results that you get
from the 1.9.4 demo in the current code release, change this line:
jeep = Max3DS.load("images/jeep1.3ds", {texturePath:"images/",
name:"jeep", loadersize:100});
to this:
jeep = Max3DS.load("images/jeep1.3ds", {texturePath:"images/",
name:"jeep", loadersize:100, centerMeshes:true});
and you should be set
cheers!
Rob
On Tue, Nov 18, 2008 at 4:59 PM, Li <[EMAIL PROTECTED]> wrote:
> Hey, I dont have time to look at the source right now, but in the meantime
> you can try something. When I have these type of problems, I always use
> LineSegments to perform graphical traces, this is an example method for
> this:
>
> private function drawSegment(x1:Number, y1:Number, z1:Number, x2:Number,
> y2:Number, z2:Number, obj:Object3D, color:uint):void
> {
> var mat:WireColorMaterial = new WireColorMaterial(color);
>
> var seg:LineSegment = new LineSegment({material:mat});
> seg.start = new Vertex(x1, y1, z1);
> seg.end = new Vertex(x2, y2, z2);
> ObjectContainer3D(obj).addChild(seg);
> }
>
> Ill look at the source when I have some time!
> Cheers
>
>
> On Tue, Nov 18, 2008 at 2:04 PM, slhenty <[EMAIL PROTECTED]> wrote:
>
>>
>> Here is my original post from last week, with the source embedded,
>>
>> http://groups.google.com/group/away3d-dev/browse_thread/thread/3d80a60260ca96a9
>>
>> Any insights are much appreciated.
>>
>>
>
--
Rob Bateman
Flash Development & Consultancy
[EMAIL PROTECTED]
www.infiniteturtles.co.uk
www.away3d.com
