Webcam Tweaker Effects

WebcamTweaker and Quartz Composer WebcamTweaker special effects have been built with Quartz Composer. It is therefore possible for everyone to develop personal effects using a simple in- teractive environment. Following this guide, you will find the complete procedure needed to create a new sample effect. Each step is explained in detail. Step 1. Start Quarz Composer. The application is bundled with the Apple Mac OS X 10.4 Tiger, but it is installed only with the developer tools in the folder “/Developer/ Applications/Graphics Tools”. If the Mac you are working with has a video card that does not support the hardware accelerated CoreImage, you will get the following message. Just igno- re it. Step 2. When Quartz Composer starts up, the Quartz Composer Assistant pane ap- pears. Select Cancel, then File → New to create a new composition. Step 3. Drag the Renderer Cube from the Patch Library to the new composition. Step 4. Add Controller Interpolation from the Patch Library: Step 5. Connect the Interpolation Result with the Cube X, Y, Z Rotation by dragging the Result dot onto the Rotation dot. Step 6. Select Interpolation and open the Inspector Command-I. Select Input Parame- ters and set the following values: Step 7. Insert the Input Splitter patch and using the Inspector set the Type parameter of the Input Splitter to Image Step 8. Connect its output to Front, Left, Right, Top, Bottom, Back Image Step 9. Control Click Input on the Input Splitter and set Published Input to TsImage Step 10. In the viewer window select Parameters from the toolbar (Command-T) Step 11. Select an image by clicking on TsImage. This image will be replaced by the ima- ge coming from the webcam in WebcamTweaker The new effect is now complete. Save it in a new folder in “/Library/Application Support/WebcamTweaker/Filters”, for example “/Library/Application Support/WebcamTweaker/Filters/MyFilters/Cube.qtz”. Start WebcamTweaker again to make the new effect available. For any further information, please refer to the Quartz Composer programming Guide.