Window Pricing and Diagram Software

I need a software solution capable of calculating window prices for Casement, Slider, and Fixed window types. The program should:

- Collect data on each window's size, style, and glass type.
- Generate a 2D diagram of the window configuration.
- Include a pricing calculator for the complete window set-up based on the provided specifications.

The successful freelancer should have experience in software development, preferably with a background in developing calculators, measurement tools, or similar systems. Understanding of window styles and types will be a plus. Your code should be clean and easy to update as our product line and pricing may need changes over time.