3-D vector integration in python with numpy arrays.

I'm estimating loss mechanisms in heliostat fields. There's 5 loss mechanisms I'm investigating, with 3 already completed. The fourth mechanism is the spillage loss, which is provided by the mathematical HFLCAL model. It requires a 3-D vector integration along a receiver plane to provide the intercepted power at a certain point in time, which will be an efficiency value. This will be applied to a csv file with locations of numerous heliostats. If this is completed successfully, I'll be offering for further help with the fifth loss mechanism.

Deliverables
- Provide working python script for HFCAL mathematical model
- Applies spillage loss mechanism to csv list of field of heliostats to result in percentage efficiency of each.
- Can be applied to other efficiency calculations to result in overall/total efficiency for each heliostat.