Starsphere.cpp

#include "Starsphere.h"

Starsphere::Starsphere() : AbstractGraphicsEngine()
{
	Axes=0, Stars=0, Constellations=0, Pulsars=0;
	LLOmarker=0, LHOmarker=0, GEOmarker=0;
	sphGrid=0, SNRs=0, SearchMarker=0;

	/**
	 * Parameters and State info
	 */
	sphRadius = 5.5;
	featureFlags = 0;

	/**
	 * Viewpoint (can be changed with mouse)
	 */
	viewpt_azimuth = 30.0;
	viewpt_elev = 23.6;
	viewpt_radius = 7.6;

	wobble_amp = 37.0;
	wobble_period = 17.0;
	zoom_amp = 0.00;
	zoom_period = 29.0;

	rotation_offset = 0.0;
	rotation_speed = 180.0;
	
	m_RefreshSearchMarker = true;
}

Starsphere::~Starsphere()
{
	if(m_PolygonFont) delete m_PolygonFont;
}

/**
 * sphVertex3D() creates a GL vertex in 3D sky sphere coordinates
 * sphVertex() creates a GL vertex on the surface of the sky sphere.
 * Use either like glVertex().
 */
void Starsphere::sphVertex3D(GLfloat RAdeg, GLfloat DEdeg, GLfloat radius)
{
	GLfloat x, y, z;

	x = radius * COS(DEdeg) * COS(RAdeg);
	z = -radius * COS(DEdeg) * SIN(RAdeg);
	y = radius * SIN(DEdeg);
	glVertex3f(x, y, z);
	return;
}

void Starsphere::sphVertex(GLfloat RAdeg, GLfloat DEdeg)
{
	sphVertex3D(RAdeg, DEdeg, sphRadius);
}

/**
 * Star Marker:
 * Makes a marker for one star at a given position and angular size.  
 */
void Starsphere::star_marker(float RAdeg, float DEdeg, float size)
{
	glPointSize((GLfloat) size);
	glBegin(GL_POINTS);
	sphVertex((GLfloat) RAdeg, (GLfloat) DEdeg);
	glEnd();
	return;
}