Marble: Refactor the Overview Map plugin to make use of GeoPainter
completed by: Ilya Kowalewski
mentors: Dennis Nienhüser, shentey, Sanjiban Bairagya, Torsten Rahn
Right now the
OverviewMap plugin uses a regular
QPainter with x and y coordinates and some custom calculations to display geodetic features (boundingrect, focusPoint, etc).
In Marble we have the
GeoPainter class which can draw geodetic features for a given projection.
This task is about refactoring the OverviewMap plugin to make use of GeoPainter:
- Create a custom ViewportParams instance initialized to match the size and projection of the overview map (EquiRectangular projection, radius mapRect.height / 2)
- Draw the boundingRect and the focus point using a new instance of GeoPainter on top of the overviewmap plugin as a paintDevice and the custom viewportParams.
In the end the overview map should work and look the same as right now - but using GeoPainter.