QtVp is a widget library for viewports that manage coordinate system transformations.

QtVp is a Qt 5.0.1 library for creating and maintaining graphical widgets that manage world coordinate systems.

QtVp provides the following features:

• Translations between device and world coordinate stystems.
• Customizable grid.
• Customizable horizontal and vertical rulers.
• Support for zooming world coordinate system.
• Support for centering world coorinate system.
• Support for snapping coordinates to grid.
• Support for snapping rubberband feedback to grid.