-
-
-#if 0
-void Star::newImage(void)
-{
- /*static float stars[3];
- stars[0] = 0.0;
- stars[1] = 0.0;
- stars[2] = 1.0;*/
-
- fgLIGHT *l = &cur_light_params;
- float sun_angle = l->sun_angle;
-
- if( sun_angle*RAD_TO_DEG < 100 ) { // else no need to draw sun
-
-
- double x_2, x_4, x_8, x_10;
- GLfloat ambient;
- GLfloat amb[4];
- int sun_size = 550;
-
- // daily variation sun gets larger near horizon
- /*if(sun_angle*RAD_TO_DEG > 84.0 && sun_angle*RAD_TO_DEG < 95)
- {
- double sun_grow = 9*fabs(94-sun_angle*RAD_TO_DEG);
- sun_size = (int)(sun_size + sun_size * cos(sun_grow*DEG_TO_RAD));
- }*/
- x_2 = sun_angle * sun_angle;
- x_4 = x_2 * x_2;
- x_8 = x_4 * x_4;
- x_10 = x_8 * x_2;
- ambient = (float)(0.4 * pow (1.1, - x_10 / 30.0));
- if (ambient < 0.3) ambient = 0.3;
- if (ambient > 1.0) ambient = 1.0;
-
- amb[0] = ((ambient * 6.0) - 1.0); // minimum value = 0.8
- amb[1] = ((ambient * 11.0) - 3.0); // minimum value = 0.3
- amb[2] = ((ambient * 12.0) - 3.6); // minimum value = 0.0
- amb[3] = 1.00;
-
- if (amb[0] > 1.0) amb[0] = 1.0;
- if (amb[1] > 1.0) amb[1] = 1.0;
- if (amb[2] > 1.0) amb[2] = 1.0;
- xglColor3fv(amb);
- glPushMatrix();
- {
- xglRotatef(((RAD_TO_DEG * rightAscension)- 90.0), 0.0, 0.0, 1.0);
- xglRotatef((RAD_TO_DEG * declination), 1.0, 0.0, 0.0);
- xglTranslatef(0,60000,0);
- if (current_options.get_textures())
- {
- glEnable(GL_TEXTURE_2D); // TEXTURE ENABLED
- glEnable(GL_BLEND); // BLEND ENABLED
-
- // glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
- glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
- glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
- glBindTexture(GL_TEXTURE_2D, sun_texid);
-
- glBegin(GL_QUADS);
- glTexCoord2f(0.0f, 0.0f); glVertex3f(-5000, 0.0, -5000);
- glTexCoord2f(1.0f, 0.0f); glVertex3f( 5000, 0.0, -5000);
- glTexCoord2f(1.0f, 1.0f); glVertex3f( 5000, 0.0, 5000);
- glTexCoord2f(0.0f, 1.0f); glVertex3f(-5000, 0.0, 5000);
- glEnd();
- }
- xglDisable(GL_TEXTURE_2D); // TEXTURE DISABLED
- xglDisable(GL_BLEND); // BLEND DISABLED
- }
-
- glPopMatrix();
- glDisable(GL_LIGHTING); // LIGHTING DISABLED
- glDisable(GL_BLEND); // BLEND DISABLED
- glPushMatrix();
- {
- xglRotatef(((RAD_TO_DEG * rightAscension)- 90.0), 0.0, 0.0, 1.0);
- xglRotatef((RAD_TO_DEG * declination), 1.0, 0.0, 0.0);
- xglColor4fv(amb);
- xglTranslatef(0,60000,0);
- gluSphere( SunObject, sun_size, 10, 10 );
- }
- glPopMatrix();
- glDisable(GL_TEXTURE_2D); // TEXTURE DISABLED
- glDisable(GL_BLEND); // BLEND DISABLED
- }
-}
-#endif