In this contribution, the development of a graphical user interface (GUI) for the in-house written FDTD solver is presented. GUI facilitates the edition of simulation parameters, drawing 3-D objects, generation of material matrices, human body modeling and visualization of simulation results. In the developed code, the OpenGL library was employed to visualize the FDTD computational domain, place 3-D objects and assign material parameters to each object. Moreover, the GPU-accelerated method for the material matrix generation was implemented inside the developed GUI. The code was developed using modern software technologies and up-to-date design patterns. Due to layered structure of the software architecture and strongly object-oriented design pattern, the code can be easily tested and extended in the future.
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