[Papervision3D] 3DMax axis vs. PV3D axis

harrie at sonicbliss.org harrie at sonicbliss.org
Sat Nov 17 14:13:53 PST 2007


Hi,

Probably due to inexperience with both tools, but after searching the  
mailinglist and googling, as well as trying out a lot I can't get my  
head around the following. How do I work with the axis in PV3D being  
different (default?) from those in 3Dmax.

(some ascii art below:)

PV3D:
  Y  Z
  | /
  |/__X

3DMax:
    Z  Y
    | /
X__|/

The only way to get stuff working seems to mirror and rotate the whole  
scene before exporting it to Collada. Also I need to change this line  
in the collada file: <up_axis>Z_UP</up_axis> to:  
<up_axis>Y_UP</up_axis>, otherwise some of the objects in the collada  
file get flipped around when rendered (not all!?).

Has anyone had this issue before and perhaps knows how to handle this?  
i.e. something deadsimple like a setting in either PV3D or 3DMax or  
export settings of Collada? We're working with 3DMax7.0 for exporting  
Collada.

Reason is, the designers are making a room in 3DMax and some  
animations (intro) in it we want to pre-render. After showing that in  
Flash as a movie, I want to take over by loading the collada and then  
using interaction to interact with objects in the room. Seems the best  
way to be talking about the same x,y,z, values, otherwise I cannot get  
the room to seamlessly link together. (Also trying to figure out the  
camera position at the same time...)

Cheers,
Harrie van der Lubbe

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