Contains the arcs of a Region with their endpoints |

An arc has two endpoints, specified via their equatorial coordinates, and the equation of the circle (x,y,z,c) of the arc. The arc is directed, the first point is the beginning, the second is the end. The arc belongs to a Region, a Convex and a patch. A patch is a contigous area of the sky. Within a patch the consecutive arcids represent a counterclockwise ordering of the vertices. |

name | type | length | unit | ucd | description |

arcid | int | 4 | unique id of the arc | ||

regionid | bigint | 8 | unique region identifier | ||

convexid | bigint | 8 | convex identifier | ||

constraintid | bigint | 8 | id of the constraint | ||

patch | int | 4 | id of the patch | ||

state | int | 4 | state (3: bounding circle, 2:root, 1: hole) | ||

draw | int | 4 | 0:hide, 1: draw | ||

ra1 | float | 8 | ra of starting point of arc | ||

dec1 | float | 8 | dec of starting point of arc | ||

ra2 | float | 8 | ra of end point of arc | ||

dec2 | float | 8 | dec of end point of arc | ||

x | float | 8 | x of constraint normal vector | ||

y | float | 8 | y of constraint normal vector | ||

z | float | 8 | z of constraint normal vector | ||

c | float | 8 | offset of constraint | ||

length | float | 8 | deg | length of arc in degrees |