Mesh parenting to camera

Blynx · Post by **Blynx** » Sun Apr 13, 2008 11:34 pm

How can I parent a mesh to the camera so it faces the same direction and same position?

It's for an FPS but instead of the gun it's just hands.
I'm using the FPS camera.

rogerborg · Post by **rogerborg** » Mon Apr 14, 2008 9:58 am

The answer is in the question.

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    handsNode->setParent(cameraNode);

If you can't see the mesh, try offsetting it along the Z axis:

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    handsNode->setPosition(vector3df(0, 0, 20));

until it appears.

Blynx · Post by **Blynx** » Mon Apr 14, 2008 10:51 am

Before I parent it, I can see it in front of me as soon as I start the program, but when I parent it, it vanishes.

JP · Post by JP » Mon Apr 14, 2008 10:54 am

Because when you set a parent the offset from the parent is the position of the node, so if you have you hands at 0,0,0 then when you parent it to the camera the hands will be moved to the exact position of the camera, and hence probably not visible.

So do as rogerborg suggests and fiddle around with the offset, moving it along the z axis should make it visible at some point and then you can scale and reposition it on the x and y axes as well to get it looking nice.

rogerborg · Post by **rogerborg** » Mon Apr 14, 2008 10:55 am

Then something screwy is going on. Do you fancy making your source and resources available?

Blynx · Post by **Blynx** » Mon Apr 14, 2008 10:56 am

Nevermind I solved it.
Thank you.

rogerborg · Post by **rogerborg** » Mon Apr 14, 2008 12:11 pm

Great! Could you tell us what was wrong; it might help us to improve the APIs or docs.

shogun · Post by **shogun** » Mon Apr 14, 2008 2:06 pm

I'm sure the problem was that the camera scenenode doesn't rotate when you rotate the camera. So you have to set the rotation of the scenenode in every frame manually.

rogerborg · Post by **rogerborg** » Mon Apr 14, 2008 2:37 pm

And I'm sure that's not the problem, and that a node attached to a FPS camera node will rotate with the camera node and retain the same apparent orientation.

One of us took the time to test that before posting: can you guess which is which?

shogun · Post by **shogun** » Mon Apr 14, 2008 3:00 pm

Rogerburg, do me a favor and write a comedy. You're so hilarious. Yawn.

JP · Post by JP » Mon Apr 14, 2008 3:57 pm

He's funny but he's right

rogerborg · Post by **rogerborg** » Mon Apr 14, 2008 4:03 pm

Apology accepted.

shogun · Post by **shogun** » Mon Apr 14, 2008 4:33 pm

Who apologized?

Blynx · Post by **Blynx** » Mon Apr 14, 2008 8:31 pm

The problem was the model jumped up too high out of view, so I change the Z axis to a high number until I saw it, then rotated the model and lowered it, brought the model back along it's Z axis until it was just right.