Computer Graphics (CS 330)

Project No. 3 (20 points)

Problem:

• To manipulate an object in a 3D world using a 2D input device (mouse).

Task:

• Develop a glutMotionFunc called moveIt( ) that will allow you to grab a 3D vertex of a polygon and move it around in its 3D world. The point will only begin moving if you first "click and hold" on the vertex.
• Using C++, OpenGL and GLUT, create a Win32 Console Application program that will  render two polygons using perspective projection, and then allow the user to grab a pre-specified vertex and move it around.

(See illustration below)
• Submit your project according to the Project Submission Guidelines for this course.

Notes:

• Keep it simple. Don't try to do more until you succesfully complete the project as described above.
• You should use the polygon classe(s) you created for Project No. 2.
• Your "look at" should be simple; I suggest position the eye somewhere on the Z+ axis, the view reference point at the origin, and the up vector as (0,1,0).
• Be careful what settings you use for your frustum(perspective).

Hint:

• A mouse function is only called when a mouse button is down and the mouse is in motion.