Using MayaCamUI

We are going to add to your 3D scene a navigation facility known to us since we modelled a 3D software. Using MayaCamUI, you can do this with just a few lines of code.

Getting ready

We need to have some 3D objects in our scene. You can use some primitives provided by Cinder, for example:

gl::drawColorCube(Vec3f::zero(), Vec3f(4.f, 4.f, 4.f));

A color cube is a cube with a different color on each face, so it is easy to determine the orientation.

How to do it...

Perform the following steps to create camera navigation:

1. We need the MayaCam.h header file:

   #include "cinder/MayaCamUI.h"

2. We also need some member declarations in the main class:

   CameraPersp  mCam;
   MayaCamUI    mMayaCam;

3. Inside the setup method, we are going to set up the camera's initial state:

   mCam.setPerspective(45.0f, getWindowAspectRatio(), 0.1, 10000);
   mMayaCam.setCurrentCam(mCam);

4. Now we have to implement three methods:

   void MainApp::resize( ResizeEvent event )
   {
       mCam = mMayaCam.getCamera();
       mCam.setAspectRatio(getWindowAspectRatio...