Could you show us a video of what happens.

Of course! Here are a couple of videos that demonstrates what I am talking about.https://www.dropbox.com/s/uxep38bs4213lom/video%20%281%29.mp4?dl=0

https://www.dropbox.com/s/7kxf69qkeb3mga4/video.mp4?dl=0

It’s rotating around the origin, you need to move the object to the origin and then rotate and then move it back

I’m not entirely sure what you mean by that, is there any way you can give me an example or is there a way to move the origin? Sorry, >.< I’m still new to OpenGL and my teacher won't answer my emails, most likely because he is too busy getting ready for G.D.C.

But I do apologize for all the questions! 

These links will help:

https://gamedev.stackexchange.com/questions/59843/rotating-an-object-when-the-center-in-not-the-origin-opengl

https://www.opengl.org/discussion_boards/showthread.php/132330-How-to-move-object-relative-to-origin-not-origin-and-object%21

https://stackoverflow.com/questions/3919249/opengl-translate-object-to-origin

glm::mat4 lmodel;

	if (withBody == false)
	{
		lmodel = glm::translate(lmodel, glm::vec3(positionX, 0.15, positionZ));
		lmodel = glm::scale(lmodel, glm::vec3(0.01f, 0.01f, 0.01f));
		lmodel = glm::rotate(lmodel, larmRotation, glm::vec3(1.0f, 0.0f, 0.0f));
		lmodel = glm::translate(lmodel, glm::vec3(positionX, 1.0f, positionZ));
	}
	if (withBody == true)
	{
		lmodel = glm::translate(lmodel, glm::vec3(positionX, -0.15f, positionZ));
		lmodel = glm::scale(lmodel, glm::vec3(0.01f, 0.01f, 0.01f));
		lmodel = glm::rotate(lmodel, larmRotation, glm::vec3(1.0f, 0.0f, 0.0f));
		lmodel = glm::translate(lmodel, glm::vec3(positionX, 30.0f, positionZ));
	}

glUniformMatrix4fv(glGetUniformLocation(lArmShader.Program, "model"), 1, GL_FALSE, glm::value_ptr(lmodel));

Hey! So I have an update. The code above is what I am using to do my rotations now. The bool “withBody” is set based on what keys are pressed to rotate a body part. For example, if the T or G key are pressed, the bool is set to true, because those keys control the rotation of the upper body. While if you press the W or S key, it’ll be set to false, because those keys control the rotation of just the arms.

So I have it set up, to when the T or G key is pressed, it’ll rotate the body (of course) but also the arms.

	if (keys[GLFW_KEY_T])
	{
		withBody = true;
		bodyRotation -= deltaTime * -2.0f;
		larmRotation -= deltaTime * -2.0f;
		rarmRotation -= deltaTime * -2.0f;
	}
	if (keys[GLFW_KEY_G])
	{
		withBody = true;
		bodyRotation -= deltaTime * 2.0f;
		larmRotation -= deltaTime * 2.0f;
		rarmRotation -= deltaTime * 2.0f;
	}

So. You might be asking yourself why I have the translations, scaling and rotations set up weird like that. Well, in the links you sent me, it seemed the solution was as easy as just doing a translation, a rotation and then another translation. However, when I tried doing it like that, the body parts would end up in random locations.

So, as it is set up right now, everything is lined up perfectly, I can rotate the arms without an issue, I can rotate the body without an issue. It’s when I flip flop between the two, that’s when the issue comes up.

www.dropbox.com/s/7kxf69qkeb3mga4/video.mp4?dl=0

Personally, I think it’s because when I am rotating the body, the bodys origin is being used, so the arms follow along with the body while it rotates. However, when you switch back to just rotating the arms, the arms origin is still in its original location, so that’s why the arm jumps to that location. I feel like if I can get the coordinates of the shoulder after it rotates, I could just move the arm to that location? However, I feel like their has to be a better way of doing that. The arm should always be connected to the body, but I can’t figure out how to fix it @_@

Almost seems to be working they way it should be, just tweak the values.

I spent a few hours tweaking the values. What I’ve found, is I either limit how much the objects can rotate to prevent the jumping around the arms do, or I need to hit google. I don’t know if I set up the models and their pivot points incorrectly or if I am just using the matrixes incorrectly, but I can’t figure out what the correct values are.

Try a simpler model and see if that works, then apply those principles to the more complex model.