[brlcad-tracker] [ brlcad-Patches-3531595 ] Adding simgrav.c & .h and function for rigid body forces

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Patches item #3531595, was opened at 2012-06-02 19:31
Message generated for change (Tracker Item Submitted) made by aldabest
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Al_Da_Best (aldabest)
Assigned to: Nobody/Anonymous (nobody)
Summary: Adding simgrav.c & .h and function for rigid body forces

Initial Comment:
The first function here uses F=(G*M*M)/R to work out the attraction force for objects within the simulation to each other. It stores this information, along with the index (sim_params->head_node->index, and so on) of the rigid bodies.

I currently do not have the mass integrated here, and have put placeholder values in for now. My next task will be to fix that. I also need to do some work/learning about how the units are handled in brlcad to make sure that is consistent.

Added in a call from simulate.c mainly for testing purposes, and to get sim_params into the function. Once fully implemented there will be a set of functions that will run every time the simulation steps, and will then change the velocities of the rigid bodies every time.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=640804&aid=3531595&group_id=105292