ReadMe.txt
### GLPaint ### |
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DESCRIPTION: |
The GLPaint sample application demonstrates how to support single finger painting using OpenGL ES. This sample also shows how to detect a "shake" motion of the device. |
By looking at the code you'll see how to set up an OpenGL ES view and use it for rendering painting strokes. The application creates a brush texture from an image by first drawing the image into a Core Graphics bitmap context. It then uses the bitmap data for the texture. |
To use this sample, open it in Xcode and click Build and Go. After the application paints "Shake Me", shake the device to erase the words. Touch a color to choose it. Paint by dragging a finger. |
NOTE: When you run the application in the simulator, you can use the Shake Gesture key under Hardware to simulate the shake motion. |
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BUILD REQUIREMENTS: |
iOS 7.0 SDK |
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RUNTIME REQUIREMENTS: |
iOS 5.0 or later |
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PACKAGING LIST: |
AppController.h |
AppController.m |
UIApplication's delegate class. |
PaintingViewController.h |
PaintingViewController.m |
The central controller of the application. Handles shake and other motion events. |
PaintingView.h |
PaintingView.m |
The class responsible for the finger painting. The class wraps the CAEAGLLayer from CoreAnimation into a convenient UIView subclass. The view content is basically an EAGL surface you render your OpenGL scene into. |
SoundEffect.h |
SoundEffect.m |
A simple Objective-C wrapper around Audio Services functions that allow the loading and playing of sound files. |
main.m |
The main entry point for the GLPaint application. |
Recording.data |
Contains the path used to display "Shake Me" after the application launches. |
Particle.png |
The texture used for the paint brush. |
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CHANGES FROM PREVIOUS VERSIONS: |
Version 1.13 |
Updated for iOS 7 and 64-bit. |
Version 1.12 |
Updated with OpenGL ES 2.0. Added a root view controller. Moved main controls from the UIApplication delegate to the new PaintingViewController class. Replaced the HSL2RGB() function with UIColor's +colorWithHue:saturation:brightness:alpha:. |
Version 1.11 |
Updated to take into account the view's contentScaleFactor. |
Updated to draw strictly with premultiplied alpha pixel data. |
Version 1.9 |
Upgraded project to build with the iOS 4.0 SDK. |
Fixed minor bugs. |
Version 1.8 |
Removed duplicate lines in setting up OpenGL blending. |
Version 1.7 |
Updated for iPhone OS 3.1. Set texture parameters before creating the texture. This will save texture memory and texture loading time. |
Use the shake API available in iPhone OS 3.0 and later. |
Made the sample xib-based. |
Version 1.6 |
Updated for and tested with iPhone OS 2.0. First public release. |
Version 1.5 |
Minor changes to the comments. |
There are no code changes in this version. |
Version 1.4 |
Updated for Beta 6. |
Updated code to use revised EAGL API. |
Removed TouchView and Texture2D classes. |
Replaced the views used to choose brush color with a segmented control. |
Replace the Texture2D class with code that creates a texture using a Core Graphic bitmap graphics context. |
Speeded up the "Shake Me" instructions that appear at the start of the application. |
Revised touch handling to use the begin, moved, end, and cancelled methods instead of touchesChanged:withEvent; |
Version 1.3 |
Updated for Beta 4. |
Changed project setting related to code signing. |
Replaced pixel buffer objects with framebuffer objects. |
Version 1.2 |
Added an icon and a default.png file. |
Version 1.1 |
Updated for Beta 2. |
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