Drawing Spline Types, Tension and Control Point using OpenGL and MFC

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Introduction

This sample teaches you how to create an OpenGL based Spline Drawing application using the MFC library.

It shows how to setup 4 Control Points:

1. Start Point
2. End Point
3. Tangent Start Point
4. Tangent End Point

User Interactions

• Right click to load the on screen context menu.
• Left click and drag to move the selected control point around and see its effect on the spline.
• From the Spline menu, you can select the Type of Spline: Hermite, Cardinal or Bezier.
• In the same menu you can change the Tension of the control points effect on the spline.
• You can also select different control points between: Start/End points and Start/End Tangent points.

Rquirements

The application requires opengl32.dll for windows which can be obtained from www.opengl.org.

Notes & Credits:

The original source code for the Spline Drawing Application is GLUT based and I found it posted on www.planet-source-code.com, OpenGL codes link. Please check the sample.