Module sphere_eclipse 

Functions

sphere_eclipse

sphere_eclipse tells you whether or not a given sphere will eclipse a given point or not. If the answer is yes, it will also return with four parameters to define the phase range and the multiplier range delimiting the region within which the spheres surface is crossed. These can then be used as the starting point for later computation. (The line of sight is described as the point in question plus a scalar multiplier times a unit vector pointing towards Earth – this is the “multiplier” referred to above and below). The multiplier must be positive: in other words the routine does not project backwards. If the point in inside the sphere, phi1 will be set = 0, phi2 = 1, lam1 = 0, and lam2 = the largest value of the multiplier lambda

sphere_eclipse_vector

This version of sphere_eclipse tells you whether or not a given sphere will eclipse a given point at a particular phase or not. If the answer is yes, it will also return with the multiplier values giving the cut points. These can then be used as starting points for Roche lobe computations. These can then be used as the starting point for later computation. Points inside the sphere are regarded as being eclipsed with the lower mulitplier set = 0

sphere_eclipse_vector_wrapper

This version of sphere_eclipse tells you whether or not a given sphere will eclipse a given point at a particular phase or not. If the answer is yes, it will also return with the multiplier values giving the cut points. These can then be used as starting points for Roche lobe computations. These can then be used as the starting point for later computation. Points inside the sphere are regarded as being eclipsed with the lower multiplier set = 0. The multiplier along the line of sight is lambda, with the smallest and largest values returned as lam1 and lam2, respectively.

sphere_eclipse_wrapper

sphere_eclipse tells you whether or not a given sphere will eclipse a given point or not. If the answer is yes, it will also return with four parameters to define the phase range and the multiplier range delimiting the region within which the spheres surface is crossed. These can then be used as the starting point for later computation. (The line of sight is described as the point in question plus a scalar multiplier times a unit vector pointing towards Earth – this is the “multiplier” referred to above and below). The multiplier must be positive: in other words the routine does not project backwards. If the point in inside the sphere, phi1 will be set = 0, phi2 = 1, lam1 = 0, and lam2 = the largest value of the multiplier lambda