Homogeneous coordinates

Use the following controls:

• Drag and Drop Actors on screen.
• Shift+Drag to scale actors.
• Control+Drag to rotate actors.
• Shift+Alt to unevenly scale actors.
• Pinch, rotate and drag on iOS with native gestures.

This demo features the following elements:

• Built-in drag'n'drop and rotate/scale.
• Homogeneous coordinate system. Despite Actor's scale, it is always of the same size, and thus, always returns internal coordinates related to its original size. When an Actor is rotated, local-reported coordinates honor an homogeneous coordinate system as well.
• TextActor optimization by caching it as bitmap.
• Manipulating Actors zorder.