shapetypes | A 2d geometry library written in Typescript | 3D Animation library

you can create a TextShape deriving from Shape, having Text, Font, Location and Color properties and treat it like other shapes, so redo and undo will not be a problem.

Here are some tips which will help you to solve the problem:

• Create a base Shape class or interface containing basic methods like Draw, Clone, HitTest, etc.
• All shapes, including TextShape should derive from Shape. TextShape is also a shape, having Text, Font, Location and Color properties.
• Each implementation of Shape has its implementation of base methods.
• Implement INotifyPropertyChanged in all your shapes, then you can listen to changes of properties and for example, add something to undo buffer after change of color, border width, etc.
• Implement IClonable or base class Clone method. All shapes should be clonable when adding to undo buffer.
• Do dispose GDI objects like Pen and Brush. It's not optional.
• Instead of adding a single shape to undo buffer, create a class like drawing context containing List of shapes, Background color of drawing surface and so on. Also in this class implement INotifyPropertyChanged, then by each change in the shapes or this class properties, you can add a clone of this class to undo buffer.

Shape

Here is an example of Shapeclass:

Using the current apache poi 4.1.0 the XSSFSimpleShape provides XSSFSimpleShape.setVerticalAlignment. And the text is in XSSFTextParagraphs which provide XSSFTextParagraph.setTextAlign.

Example:

Below is an example of how to draw the same shape (a GraphicsPath) into various locations and rotations.

The key here is the following two commands

so this seems to be possible using Extract:

IntDef treat like enum so you can't initialize later. You have declare manually.

World is used before it's declared. In the definition of mRigidBody's constructors you refer to World::shapeTypes but World is only defined later in the file. Try placing the definition of World before mRigidBody. You may need to forward declare mRigidBody before defining World.