SG_SPHERIC_BAND structure

 

The SG_SPHERIC_BAND structure is a presentation of a spherical band.

 

 

Has the following fields

 

double  Radius; -  spherical band radius

double  BeginCoef; - initial spherical band cut coefficient

double  EndCoef      - final spherical band cut coefficient

short     MeridiansCount - the number of spherical band meridians

Explanation:

BeginCoef must be from -1 to 1. If BeginCoef=-1 the spherical band won't be cut from below

If BeginCoef=1 the spherical band won't be cut from above.

If BeginCoef=0 the spherical band will be cut by an equator of the corresponding sphere.

EndCoef must be from -1 to 1. If EndCoef=-1 the spherical band won't be cut from below

If EndCoef=1 the spherical band won't be cut from above

If EndCoef=0 the spherical band will be cut by an equator of the corresponding sphere.

BeginCoef must be less than EndCoef.

 

Illustration:

sb_1

 

 

BeginCoef = -0.5

EndCoef = 0.5

MeridiansCount = 5

 

sb_2

 

BeginCoef = 0

EndCoef = 0.5

MeridiansCount = 10

 

sb_3

 

BeginCoef = -1.0

EndCoef = 0

MeridiansCount = 24

 

 

Defined in sg3D.h