void RenderScene()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(xRot, 1.0f, 0.0f, 0.0f);
glRotatef(yRot, 0.0f, 1.0f, 0.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(0.0f, 0.0f, zDistance);
// 기본 중심 위치에 태양그리기
glRotatef(sphereRotate, 0.0f, 1.0f, 0.0f);
makeSun();
// 태양을 중심으로 위치를 계산하기 위해 pushmatrix를 함
glPushMatrix();
// 지구는 몇도를 돌릴까
glRotatef(sphereRotate, 0.0f, 1.0f, 0.0f);
// 태양을 중심으로 x축으로 떨어진 정도
glTranslatef(30.0f, 0.0f, 0.0f);
makeEarth();
glPushMatrix();
glRotatef(sphereRotate, 0.0f, 1.0f, 0.0f);
glTranslatef(0.0f, 0.0f, 20.0f);
makeMoon();
glPopMatrix();
glPopMatrix();
glPopMatrix();
sphereRotate += 10.0f;
if (sphereRotate > 360.0f)
{
sphereRotate = 0.0f;
}
glutSwapBuffers();
}
// Called to draw scene
void RenderScene(void)
{
// Clear the window
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
if (1 <= iPlanet && iPlanet <= 3)
{
//background stars display
srand((unsigned)time(NULL));
int j = 0;
int temp1 = 0;
int temp2 = 0;
while (j<1000)
{
j += 1;
float x = rand() % 1000;
float y = rand() % 750;
if (j % 2 == 1)
{
temp1 = -x;
temp2 = -y;
x = temp1;
y = temp2;
}
glColor3ub(rand() % 255, rand() % 255, rand() % 255);
glBegin(GL_POLYGON);
glVertex2f(x, y);
glVertex2f(x - 0.1, y - 0.05);
glVertex2f(x - 0.15, y - 0.15);
glVertex2f(x - 0.1, y - 0.25);
glVertex2f(x, y - 0.3);
glVertex2f(x + 0.1, y - 0.25);
glVertex2f(x + 0.15, y - 0.15);
glVertex2f(x + 0.1, y - 0.05);
glEnd();
}
// Save matrix state and do the rotation
glPushMatrix();
glRotatef(xRot, 1.0f, 0.0f, 0.0f);
glRotatef(yRot, 0.0f, 1.0f, 0.0f);
glColor3ub(230, 50, 0);
glutSolidSphere(6.0f, 25, 25);
int i = 0;
int xpoint = 50;
int zpoint = 50;
while (i <= 10)
{
i++;
glBegin(GL_LINES);
glVertex3d(xpoint, -10, 50);
glVertex3d(xpoint, -10, -50);
glVertex3d(50, -10, zpoint);
glVertex3d(-50, -10, zpoint);
glEnd();
xpoint -= 10;
zpoint -= 10;
}
// Restore transformations
glPushMatrix();
glRotatef(MercuryY, 0.0f, 1.0f, 0.0f);
makeMercury();
glPopMatrix();
glPushMatrix();
glRotatef(VenusY, 0.0f, 1.0f, 0.0f);
makeVenus();
glPopMatrix();
glPushMatrix();
glRotatef(EarthY, 0.0f, 1.0f, 0.0f);
makeEarth();
glPopMatrix();
glPushMatrix();
glRotatef(MarsY, 0.0f, 1.0f, 0.0f);
makeMars();
glPopMatrix();
glPushMatrix();
glRotatef(JupiterY, 0.0f, 1.0f, 0.0f);
makeJupiter();
glPopMatrix();
glPushMatrix();
glRotatef(SaturnY, 0.0f, 1.0f, 0.0f);
makeSaturn();
glPopMatrix();
glPushMatrix();
glRotatef(UranusY, 0.0f, 1.0f, 0.0f);
makeUranus();
glPopMatrix();
glPushMatrix();
glRotatef(NeptuneY, 0.0f, 1.0f, 0.0f);
makeNeptune();
glPopMatrix();
glPushMatrix();
glRotatef(PlutoY, 0.0f, 1.0f, 0.0f);
makePluto();
glPopMatrix();
glutIdleFunc(spin);
glPopMatrix();
}// 태양계 그림일 경우 if 문끝
else if (iPlanet == 4)
{
glLoadIdentity();
gluLookAt(0.0, 0.0, -5, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
//glTranslatef(0.0, 0.0, -5.0); // Z축으로 좀 떨어져서 관측한다.
glPushMatrix();
glRotatef(planetRoz, 0.0f, 0.0f, 1.0f);
glRotatef(planetRoy, 0.0f, 1.0f, 0.0f);
SunRotation();
glBegin(GL_LINES);
glColor3ub(0, 255, 0);
glVertex3d(0.0, -55.0, 0.0);
glVertex3d(0.0, 55.0, 0.0);
glEnd();
glutIdleFunc(planetRotate);
glPopMatrix();
}
else if (iPlanet == 5)
{
glPushMatrix();
glRotatef(planetRoz, 0.0f, 0.0f, 1.0f);
glRotatef(planetRoy, 0.0f, 1.0f, 0.0f);
MercuryRotation();
glBegin(GL_LINES);
glColor3ub(0, 255, 0);
glVertex3d(0.0, -55.0, 0.0);
glVertex3d(0.0, 55.0, 0.0);
glEnd();
glutIdleFunc(planetRotate);
glPopMatrix();
}
else if (iPlanet == 6)
{
glPushMatrix();
glRotatef(planetRoz, 0.0f, 0.0f, 1.0f);
glRotatef(planetRoy, 0.0f, 1.0f, 0.0f);
VenusRotation();
glBegin(GL_LINES);
glColor3ub(0, 255, 0);
glVertex3d(0.0, -55.0, 0.0);
glVertex3d(0.0, 55.0, 0.0);
glEnd();
glutIdleFunc(planetRotate);
glPopMatrix();
}
else if (iPlanet == 7)
{
glPushMatrix();
glRotatef(planetRoz, 0.0f, 0.0f, 1.0f);
glRotatef(planetRoy, 0.0f, 1.0f, 0.0f);
EarthRotation();
glBegin(GL_LINES);
glColor3ub(0, 255, 0);
glVertex3d(0.0, -55.0, 0.0);
glVertex3d(0.0, 55.0, 0.0);
glEnd();
glutIdleFunc(planetRotate);
glPopMatrix();
}
else if (iPlanet == 8)
{
glPushMatrix();
glRotatef(planetRoz, 0.0f, 0.0f, 1.0f);
glRotatef(planetRoy, 0.0f, 1.0f, 0.0f);
MarsRotation();
glBegin(GL_LINES);
glColor3ub(0, 255, 0);
glVertex3d(0.0, -55.0, 0.0);
glVertex3d(0.0, 55.0, 0.0);
glEnd();
glutIdleFunc(planetRotate);
glPopMatrix();
}
else if (iPlanet == 9)
{
glPushMatrix();
glRotatef(planetRoz, 0.0f, 0.0f, 1.0f);
glRotatef(planetRoy, 0.0f, 1.0f, 0.0f);
JupiterRotation();
glBegin(GL_LINES);
glColor3ub(0, 255, 0);
glVertex3d(0.0, -55.0, 0.0);
glVertex3d(0.0, 55.0, 0.0);
glEnd();
glutIdleFunc(planetRotate);
glPopMatrix();
}
else if (iPlanet == 10)
{
glPushMatrix();
glRotatef(planetRoz, 0.0f, 0.0f, 1.0f);
glRotatef(planetRoy, 0.0f, 1.0f, 0.0f);
SaturnRotation();
glBegin(GL_LINES);
glColor3ub(0, 255, 0);
glVertex3d(0.0, -55.0, 0.0);
glVertex3d(0.0, 55.0, 0.0);
glEnd();
glutIdleFunc(planetRotate);
glPopMatrix();
}
else if (iPlanet == 11)
{
glPushMatrix();
glRotatef(planetRoz, 0.0f, 0.0f, 1.0f);
glRotatef(planetRoy, 0.0f, 1.0f, 0.0f);
UranusRotation();
glBegin(GL_LINES);
glColor3ub(0, 255, 0);
glVertex3d(0.0, -55.0, 0.0);
glVertex3d(0.0, 55.0, 0.0);
glEnd();
glutIdleFunc(planetRotate);
glPopMatrix();
}
else if (iPlanet == 12)
{
glPushMatrix();
glRotatef(planetRoz, 0.0f, 0.0f, 1.0f);
glRotatef(planetRoy, 0.0f, 1.0f, 0.0f);
NeptuneRotation();
glBegin(GL_LINES);
glColor3ub(0, 255, 0);
glVertex3d(0.0, -55.0, 0.0);
glVertex3d(0.0, 55.0, 0.0);
glEnd();
glutIdleFunc(planetRotate);
glPopMatrix();
}
else if (iPlanet == 13)
{
glPushMatrix();
glRotatef(planetRoz, 0.0f, 0.0f, 1.0f);
glRotatef(planetRoy, 0.0f, 1.0f, 0.0f);
PlutoRotation();
glBegin(GL_LINES);
glColor3ub(0, 255, 0);
glVertex3d(0.0, -55.0, 0.0);
glVertex3d(0.0, 55.0, 0.0);
glEnd();
glutIdleFunc(planetRotate);
glPopMatrix();
}
// Flush drawing commands
glutSwapBuffers();
}
