vgl_star Struct Reference

#include <vgl/render.h>

Public Attributes
float	direction [3]
float	magnitude
float	color [3]
float	reserved

Detailed Description

A star, for the backends that draw a star field behind the sky (design document, section 7.6). The host supplies the stars, from a catalogue of its choice: vgl ships none.

Member Data Documentation

direction

float vgl_star::direction[3]

Unit direction in the celestial frame of J2000: x towards the vernal equinox, z towards the north celestial pole (vgl_earth_rotation_angle_get turns it into ECEF).

magnitude

float vgl_star::magnitude

Apparent visual magnitude: about -1.5 for Sirius, 6.5 for the faintest seen by eye.

color

float vgl_star::color[3]

Linear RGB, 1 for the brightest channel.

reserved

float vgl_star::reserved

0

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The documentation for this struct was generated from the following file:

• vgl/render.h