As a part of a solar design software for AutoCAD, I would like to include a shadow creation tool with the accumulated shadow of a selected day with bounderies and interval of casting (e.g. 21 september, 8am - 6pm, every hour).
The shadow cast should be a 3D solid and/or 3D polyline of industrial roof tops (obstacles, skylights and wall casting shadows on roof surfaces).
I prefer the programming is done in VB.NET because this module need to added to an existing plugin which is programmed in VB.NET. Also C# is possible but this need to be translated to VB.NET.
Advanced knowledge of the AutoCAD API is necesarry to get the project done.