CONTOH CODING ANIMASI 2D MEMBUAT SETIGA

//apa fungsi dari glMatrixMode (GL_PROJECTION)

#include <GL/glut.h>  //sebagai header file untuk OpenGL32 Library

#include <windows.h>  //sebagai header file untuk windows

GLfloat xangle=0.0;  //deklarasi variabel xangle

GLfloat aangle=0.0;  //deklarasi variabel aangle

GLfloat bangle=0.0;  //deklarasi variabel bangle

void init (void) {  //fungsi utama untuk tampilan

            glClearColor (1.0,1.0,1.0,0.0);

            glLineWidth    (1.0);

            glColor3f(1.0,0.0,0.0);

            glMatrixMode (GL_PROJECTION);

            glLoadIdentity ();

            glOrtho (-6,6,-6,6,-6,6);

}

void display(void){

glClear(GL_COLOR_BUFFER_BIT);

glPushMatrix();

glBegin (GL_LINES);

            glVertex2f(-5.5,0.0);

            glColor3f(1.0,0.0,0.0);

            glVertex2f(5.5,0.0);

glEnd();

glBegin (GL_LINES);                                                //fungsi menggambar sumbu y

            glVertex2f(0.0,-5.5);               //sumbu Y negatif

            glColor3f(1.0,0.0,0.0);                        //merah

            glVertex2f(0.0,5.5);                //sumbu Y positif

glEnd();                                                                       //fungsi akhir perintah opengl

glRotatef(xangle, 0.0, 0.0, 1.1); //menentukan sumbu z yang berputar penuh/rotasi

glRotatef(aangle, 1.0, 0.0, 0.0); //menentukan sumbu x yang bergerak refleksi

glRotatef(bangle, 0.0, 1.1, 0.0); //menentukan sumbu y yang bergerak reklasi

glBegin(GL_POLYGON);

            glColor3f(1.-1,1.2,-2.1);         

            glVertex2f(1.0,1.0);    //titik a (1,1)

            glColor3f(-1.-2,-3.1,4.1);

            glVertex2f(4.0,1.0);                //titik b (4,1)

            glColor3f(3.2,1.7,1.9);

            glVertex2f(1.0,5.0);                //titik C (1,5)

            glEnd();

glPopMatrix();

 glutSwapBuffers();                //fungsi perpindahan

 glFlush();

}

void KeyboardAssign (GLubyte key, GLint x, GLint y){

            switch (key){

                        case 'z':

                                    xangle +=10.0;

                                    glColor3f(0.0,0.0,1.0);

                                    glutPostRedisplay();

                                    break;

                        case 'x':

                                    aangle +=10.0;

                                    glColor3f(0.0,0.0,1.0);

                                    glutPostRedisplay();

                                    break;

                        case 'y':

                                    bangle +=10.0;

                                    glColor3f(0.0,0.0,1.0);

                                    glutPostRedisplay();

                                    break;

            }

}

void main (int argc, char** argv){ //pemanggila fungsi utama

            glutInit (&argc,argv);//pemanggila fungsi utama OpenGL

            glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);//fungsi warna jenis tampilan

            glutInitWindowPosition (0,0);//menetapkan posisi windows

            glutInitWindowSize(1500,1500);//menetapkan ukuran windows

            glutCreateWindow("Latihan 2");//membuat windows dan menentukan judulnya

            init();

            glutDisplayFunc(display);//memanggil fungsi untuk menampilkan objek

            glutKeyboardFunc(KeyboardAssign);

            glutMainLoop();                                                                      //terus tampilkan hingga program diakhiri

}