Moving a Model

Hello, I’m brand new to OpenGL and I’m having trouble moving a model inside a scene.

void timerFunc(int value)
glutTimerFunc(300, timerFunc, ++value);

//translateMatrix is a math function that takes in the matrix plus x, y, and z coordinates
translateMatrixBy(myModel->modelMatrix, 5.0f, 0.0f, 0.0f);

//this is just some text to verify that this section is running
char notify[] = {‘1’,‘2’,‘3’};



The timer function is getting called. I’m guessing that re-rendering the model isn’t what I need to be doing, or that changing the model matrix doesn’t actually re-call the shader in the rendering process… or that I’m just completely confused. Any assistance would be hugely appreciated.

Every time you render ‘MyModel’ you are supposed to draw it at some world space location. I assume you have the ‘MyModel->ModelMatrix’ for that purpose. Therefore every frame, the model will be drawn at the correct location.
So, all that has to happen in the timer is a change to the MyModel->ModelMatrix - i.e. alter the translation part of the matrix (the last column) to the new X,Y,Z world space coordinates. No drawing is required.