Using getMatrixOfJoint?

[saigumi]

I'm attempting to add objects to a sceneNode based on the joint of an MS3D model.

However, it looks like I'm not actually retrieving the matrix even though the ms3d mesh has joints. A copy of the meshes using in the example are at
http://www.saigumi.net/test_mesh.zip

Anyone see what I'm doing wrong?

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			irr::scene::IAnimatedMeshMS3D* tempMesh = (irr::scene::IAnimatedMeshMS3D*)smgr->getMesh("chibi_man.ms3d");
			irr::core::matrix4* tempMatrix = tempMesh->getMatrixOfJoint(tempMesh->getJointCount(),tempMesh->getFrameCount());
				
			irr::scene::ISceneNode* gun = smgr->addAnimatedMeshSceneNode(smgr->getMesh("gun01.ms3d"),
				Object[ObjectCount].Core,-1,
				tempMatrix->getTranslation());
				tempMatrix->getRotationDegrees(),
				irr::core::vector3df(1,1,1));

[niko]

Hm, maybe it would work better with something like that:

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tempMesh->getMatrixOfJoint(tempMesh->getJointCount()-1,tempMesh->getFrameCount()-1);

or that:

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tempMesh->getMatrixOfJoint(0,0);

[saigumi]

Tried it, it sort of worked.

I had to create at least one frame of animation in the ms3d for it to work. After adding the keyframe, the model looked like the X one you dropped in a shredder, but it did find a joint.

So, I tried it out on tiny (from the DX tutorials) Calling this bombs out when attempting getTranslation or getRotation.

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irr::scene::IAnimatedMeshX* tempMesh = (irr::scene::IAnimatedMeshX*)smgr->getMesh("tiny.x");
			irr::s32 tempct = tempMesh->getJointCount();
			tempct = tempMesh->getFrameCount();
			irr::core::matrix4* tempMatrix = tempMesh->getMatrixOfJoint(0,0);
				
			irr::scene::ISceneNode* gun = smgr->addAnimatedMeshSceneNode(smgr->getMesh("gun01.ms3d"),
				Object[ObjectCount].Core,-1,
				tempMatrix->getTranslation(),
				tempMatrix->getRotationDegrees(),
				irr::core::vector3df(1,1,1));

[saigumi]

Got it! My model was just borked. BAD.

The zombie doing the John Woo style dive on the left has a gun in his hand. (the black splotch that almost matches his panths)

Another gun can sort of be seen as the black splotch just to the right of him



Every frame, I just need to update the position by calling

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		irr::scene::IAnimatedMeshX* tempMesh = (irr::scene::IAnimatedMeshX*)smgr->getMesh("zombie02.ms3d");
		
		irr::core::matrix4* tempMatrix = tempMesh->getMatrixOfJoint(tempMesh->getJointNumber("Joint13"),player->getFrameNr());
		irr::core::vector3df tempRot = tempMatrix->getRotationDegrees();
		tempRot.X += 90.0f;
		gun->setPosition(tempMatrix->getTranslation());
		gun->setRotation(tempRot);

[Robomaniac]

cool, very helpful for third person

[keless]

excellent, i was starting to think about this for Equiped items in IrrLichtRPG