/*
* initSphereList(GLuint *listID, GLdouble scale) - create a display list
* to render the sphere more efficently than calling lots of trigonometric
* functions for each frame.
*/
void initSphereList(GLuint *listID)
{
*listID = glGenLists(1);
glNewList(*listID, GL_COMPILE);
drawTexturedSphere(1.0, 20); // Radius 1.0, 20 segments
glEndList();
}
void drawPlanet(jrPlanet *pPlanet) {
glPushMatrix(); //begin drawing
glPushName((unsigned int) pPlanet);
glPushAttrib(GL_ALL_ATTRIB_BITS);
if (pPlanet->iType < SUN || !g_bTexturesOn) {
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, pPlanet->afAmbient); //set the materials of the planet
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pPlanet->afDiffuse);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, g_af_SphereSpecular);
glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, g_f_SphereShininess);
}
glTranslatef(pPlanet->afPosition[0], pPlanet->afPosition[1], pPlanet->afPosition[2]); //move the position so we can draw at the correct point
glRotatef(pPlanet->fRotationAngle, pPlanet->afPosition[0] - pPlanet->fSize, pPlanet->afPosition[1] - pPlanet->fSize, pPlanet->afPosition[2] - pPlanet->fSize);
int iType = pPlanet->iType;
if (!g_bTexturesOn && pPlanet->iType >= SUN) {
iType = SPHERE;
}
else if (g_bTexturesOn && pPlanet->iType >= SUN) {
iType = SPECIAL;
}
switch (iType) { //change to constants
case SPHERE:
glutSolidSphere(pPlanet->fSize, pPlanet->iSlices, pPlanet->iSegments); //draw the planet
break;
case CUBE:
glutSolidCube(pPlanet->fSize * 2.0f);
break;
case CONE:
glutSolidCone(pPlanet->fSize, pPlanet->fSize * 2.0f, pPlanet->iSlices, pPlanet->iSegments);
break;
case TEAPOT:
glutSolidTeapot(pPlanet->fSize);
break;
case SPECIAL:
drawTexturedSphere(pPlanet);
break;
}
glPopName();
glPopMatrix(); //end drawing
if (g_bTrailsOn && !pPlanet->m_bFixed) {
drawTrail(pPlanet);
}
glPopAttrib();
}
void gl_draw(){
glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
glLoadIdentity();
glTranslatef(0,0,zoom);
glRotatef(yRot, 1, 0, 0);
glRotatef(xRot, 0, 1, 0);
glScalef( .25, .25, .25 );
float time = (clock()-clock_0)/(float)(CLOCKS_PER_SEC);
glPushMatrix();
glRotatef(30.0f*time, 0.0f, 0.0f, 1.0f);
glTranslatef(5.0f, 0.0f, 0.0f);
float lightpos0[4]={0.0f, 0.0f, 0.0f, 1.0f};
glLightfv(GL_LIGHT0, GL_POSITION, lightpos0);
glPopMatrix();
glPushMatrix();
glRotatef(45.0f*time, 0.0f, 0.0f, 1.0f);
glColor3f(1.0f, 1.0f, 1.0f);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glBindTexture(GL_TEXTURE_2D, textureID);
glUseProgram( programObj );
if(drawTeapot){
glutSolidTeapot(1.0); }
else{
drawTexturedSphere(1.0, 20); }
glUseProgram(0);
glPopMatrix();
// Disable lighting again, to prepare for next frame.
glDisable(GL_LIGHTING);
glDisable(GL_LIGHT0);
glutSwapBuffers();
}