Difference between absoluteTransform & relativeTransform

[emre2345]

Hi all,

I compare the ISceneNode::getAbsoluteTransform and
ISceneNode::getRelativeTransform functions. There was no difference.

What are these two?If they have difference what can be the reason of being the same of these two function' s return values?

[B@z]

for example, there are the legs, what are turned 30 right.
the upper will be turned 30 left (-30)
the head is at 0.
(child system)

so, with abs transformation, you got these datas but with relative:

legs are 30
upper is -60
head is 30

because relative to legs, the upper is turned 60 left.
and so on.

but if your node is just one mesh (not parented), then it doesn't have relative value, so it returns the absolute to you, for not crash your app.

[3DModelerMan]

You might have gotten me excited about that.
I think they might have something to do with getting the local axis of that scene node, but I don't know. I've got to check the api for ISceneNode::setRelativeTransform() now

[3DModelerMan]

Ummm it looks like I posted a wrong theory at the exact same time someone else posted. oops sorry.

[B@z]

well, i just think that way, it doesn't mean that it's the truth

[emre2345]

Thanx for the answers

Now i come across with another problem. i am working on physx and irrlicht implementation.

I get mesh from 3ds, then take its bounding box and send dimensions to physx. But my physic object and rendered mesh is different in dimensions. After a while i realize that irrlicht is scaling mesh while rendering although i give the scale as vector3df(1, 1, 1).

Is there a possibility to be a bug in rendering?


p.s. i didnt want to open a new thread so i continued to this.

[rogerborg]

Is there a possibility to be a bug in rendering?

Yes, you've found a critical core bug in the most basic Irrlicht functionality that nobody else has ever noticed. Your amazingly detailed and specific bug report will allow it to be fixed in record time. Adulation and worship will follow. There may even be statues.