Tim Seyfarth had a specific question about adding a Z-axis to a floorplan. Immidiately I was thinking about the Isometric games like Diablo and I thought it would be a nice thing to try it out in Realbasic/Xojo. However, it looked like it was not that easy to implement as it seems. A lot of math is needed to create an engine like this. As my time is limited, I decided to spend some evenings translating an existing engine into Realbasic/Xojo. I have chosen the μIso (μIsometric Engine: A Java Isometric Engine) engine. The original code can be found here. All credit for the think work goes to Luis Henrique Oliveira Rios. Visit his page for some explanation.