Copyright © 2007-2009 by Apple Inc.  All Rights Reserved.

Quartz Composer Plugin

GLHeightField                   A Quartz Composer plug-in that renders a 3D height field 

                        from an image.

Sample Requirements             The plugin was created using the Xcode editor running 

                        under Mac OS X 10.6.x or later. 

About the sample                An advanced Quartz Composer plug-in that implements a 

                        custom consumer patch that renders a 3D height field from 

                        an image using OpenGL frame buffer objects (FBO) and 

                        vertex buffer objects (VBO).

Using the Sample                Open the project using the Xcode editor which can be found 

                        in /Developer/Applications. From the main menu, 

                        choose "Project", set "Active Configuration" to "Release", 

                        and "Active Target" to "Build & Copy".  These settings are

                        also available from the top left corner of the 'Overview' 

                        pull-down window. Build the project. Once the build has 

                        completed successfully, the plug-in can be used as a 

                        regular QC patch in the Quartz Composer editor (also 

                        installed under /Developer/Applications), by selecting it 

                        from the Library - Plugin panel.

                        Connects an image to the plug-in input port "Image", the 

                        3D field will be rendered in the Viewer. The user can 

                        change the rendering by setting the input parameters 

                        "Wireframe Mode" and "Color".

Installation                    n/a

Changes from Previous Versions          n/a

Feedback and Bug Reports            Please send all feedback about this sample to:

                        http://developer.apple.com/contact/feedback.html

                        Please submit any bug reports about this example to 

                        http://developer.apple.com/bugreport