OpenGL - 태양계

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#include <glut.h> #include <Windows.h>   double year = 0; double month = 0; double day = 0; double roundTheMercury = 0; double roundTheVenus = 0; double roundTheMars = 0; double roundTheJupiter = 0; double roundTheSaturn = 0; double roundTheUranus = 0;   void Display() {     glClearColor(0, 0, 0, 1);     // 배경 색깔     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);     // 프레임마다 새로그리기때문에(60프레임)     // 화면을 초기화 시켜주기 위해서      glEnable(GL_DEPTH_TEST);     glEnable(GL_LIGHTING);     glEnable(GL_LIGHT0);     GLfloat ambient[] = { 0,0,0,0 };     GLfloat diffuse[] = { 1,0,0,0 };     glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);     glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);     glClearDepth(1.0f);     //glBegin(GL_POLYGON);     // 그리는 값들이 begin, end 사이에 들어감     //glVertex3f(-0.5, -0.5, 0);// 1     //glVertex3f(0.5, -0.5, 0);// 2     //glVertex3f(0.5, 0.5, 0);// 3     //glVertex3f(-0.5, 0.5, 0);// 4     // 123 -> 143 삼각형 2개 만들어서 합침     //glEnd();       glLoadIdentity();     // matrix초기화     glColor3f(1, 0, 0);     // 색정하기     gluLookAt(0, -30, -10, 0, 0, 1, 0, 1, 0);     // 카메라 위치 지정해주기     glutWireSphere(1.5, 50, 10); // 태양     glPushMatrix(); {         glColor3f(1, 1, 1);         glutWireTorus(1, 4, 1, 30); // 지구         glutWireTorus(1, 1, 1, 30); // 수성         glutWireTorus(1, 2.5, 1, 30); // 금성         glutWireTorus(1, 5.5, 1, 30); // 화성         glutWireTorus(1, 7, 1, 30); // 목성         glutWireTorus(1, 8.5, 1, 30); // 토성         glutWireTorus(1, 10, 1, 30); // 천왕성     }     glPopMatrix();        glPushMatrix(); {// 이전에 넣어주었던 값들을 가져온다. 기준점 잡기            glRotatef(year, 0, 0, 1); // 지구 공전            // Rotate            glTranslatef(5, 0, 0);         // Translate         glutSolidSphere(0.5, 30, 30);            glPushMatrix(); {             glRotatef(month, 0, 0, 1); // 달 공전             glTranslatef(1, 0, 0);             glRotatef(day, 0, 0, 1); // 달 자전             glColor3f(1, 1, 0);             glutWireSphere(0.1, 50, 50);             glutSolidCube(0.5);           }     }        glPopMatrix();        glPopMatrix();        glPushMatrix(); {            glColor3f(0.7, 0.8, 0.8);            glRotatef(roundTheMercury, 0, 0, 1); // 수성 공전                glTranslatef(2, 0, 0);            glutSolidSphere(0.15, 30, 30);        }        glPopMatrix();        glPushMatrix(); {            glColor3f(0.8, 0.6, 0.5);            glRotatef(roundTheVenus, 0, 0, 1); // 금성 공전                glTranslatef(3.5, 0, 0);            glutSolidSphere(0.45, 30, 30);        }        glPopMatrix();        glPushMatrix(); {            glColor3f(0.8, 0.6, 0.5);            glRotatef(roundTheMars, 0, 0, 1); // 화성 공전                glTranslatef(6.5, 0, 0);            glutSolidSphere(0.25, 30, 30);        }        glPopMatrix();        glPushMatrix(); {            glColor3f(0.8, 0.6, 0.2);            glRotatef(roundTheMars, 0, 0, 1); // 화성 공전                glTranslatef(6.5, 0, 0);            glutSolidSphere(0.25, 30, 30);        }        glPopMatrix();        glPushMatrix(); {            glColor3f(0.7, 0.3, 0.1);            glRotatef(roundTheJupiter, 0, 0, 1); // 목성 공전                glTranslatef(8, 0, 0);            glutSolidSphere(1, 30, 30);        }        glPopMatrix();        glPushMatrix(); {            glColor3f(0.2, 0.5, 0.3);            glRotatef(roundTheMars, 0, 0, 1); // 토성 공전                glTranslatef(9.5, 0, 0);            glutSolidSphere(0.7, 30, 30);            glutWireTorus(1, 0.2, 1, 30);        }        glPopMatrix();        glPushMatrix(); {            glColor3f(0.7, 0.8, 0.8);            glRotatef(roundTheUranus, 0, 0, 1); // 해왕성 공전                glTranslatef(11, 0, 0);            glutSolidSphere(0.7, 30, 30);        }        glPopMatrix();        glFlush(); } double speed = 0;   void idle() {     if (GetAsyncKeyState(VK_ADD)) {         speed += 0.001f;     }     else if(GetAsyncKeyState(VK_SUBTRACT)) {         speed -= 0.001f;     } else if (GetAsyncKeyState(VK_ADD) && 0x0001){         year += speed;     }          month += 0.1;     day += 0.2;     roundTheMercury += 0.002;     roundTheVenus += 0.006;     roundTheMars += 0.019;     roundTheJupiter += 0.12;     roundTheSaturn += 0.29;     roundTheUranus += 0.1;     Display(); }   void reShape(int w, int h) {     glViewport(0, 0, w, h);     glMatrixMode(GL_PROJECTION);     glLoadIdentity();     glFrustum(-1, 1, -1, 1, 1.5, 50);     glMatrixMode(GL_MODELVIEW); }     void main() {     glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);     // RGB모드 , 싱글버퍼     glShadeModel(GL_FLAT);     // 쉐이딩모드 ex)FLAT 보다 SMOOTH 가 더부드러움     glutInitWindowSize(1000, 1000);// 창크기     glutCreateWindow("hello world");// 창생성     glutDisplayFunc(Display);     glutReshapeFunc(reShape);     glutIdleFunc(idle);     glutMainLoop(); } Colored by Color Scripter

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