In this tutorial, you will create a vector drawing app based on TouchVG. See touchvg/Readme.txt to copy files required to compile.

• Create a project with the Single View Application wizard.

• Add the libraries and header files of TouchVG to this project.

  • `cd' to the 'ios' directory of the TouchVG project.
  • Type ./build.sh to compile libraries outputed to the 'ios/output' directory.
  • Add TouchVG, TouchVGCore, libTouchVG.a and libTouchVGCore.a to this project.
  • Change 'Library Search Paths' of the HelloWorld target from '.../iOSHelloWorld/touchvg' to the relative path 'touchvg'.

• Add QuartzCore.framework and libc++.dylib in 'Link Binary With Libraries' of the target.

  • Add libc++.dylib for ViewController.m or change ViewController.m to ViewController.mm to use Obj-C++ classes of TouchVG.

• Add a vector drawing view in ViewController.mm/.m:

  • Add #import "GiViewHelper.h" to use helper = [GiViewHelper sharedInstance].
  • Add a drawing view in self.view via [helper createGraphView:self.view.bounds :self.view];.
  • Start the free-hand splines command via helper.command = @"splines";. The names of all commands will be printed in logging after the app runs.

• Enjoy the simple drawing app now! You can fork this project and add drawing UI reference to ColorPad wizard.

• Type ./build.sh to compile libraries and copy them to touchvg directory.
• Or type ./build.sh -arch arm64 to make for iOS 64-bit.
• Then run HelloWorld.xcodeproj in Xcode.

• ljlin
• Zhang Yungui