OpenGL untuk membuat prisma.

Berikut ini adalah program OpenGL untuk membuat prisma.

Praktikum grafika 9.

#include <windows.h> 

#include <stdio.h> 

#include <stdlib.h> 

#include <string.h>

#include <stdarg.h> 

#include <glut.h>

#include <glu.h>

void initRendering() {

      glEnable(GL_DEPTH_TEST);

      glEnable(GL_COLOR_MATERIAL);

      glEnable(GL_LIGHTING);

      glEnable(GL_LIGHT0);

      glEnable(GL_LIGHT1);

      glEnable(GL_NORMALIZE);

      glShadeModel(GL_SMOOTH);

}

void handleResize(int w, int h) {

      glViewport(0, 0, w, h);

      glMatrixMode(GL_PROJECTION);

      glLoadIdentity();

      gluPerspective(45.0, (double)w / (double)h, 1.0, 200.0);

}

float _angle = 60.0f;

void drawScene() {

      glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

      glMatrixMode(GL_MODELVIEW);

      glLoadIdentity();

      glTranslatef(0.0f, 0.0f, -8.0f);

      GLfloat ambientColor[] = {0.2f, 0.2f, 0.2f, 1.0f};

      glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambientColor);

      GLfloat lightColor0[] = {0.5f, 0.5f, 0.5f, 1.0f};

      GLfloat lightPos0[] = {4.0f, 0.0f, 8.0f, 1.0f};

      glLightfv(GL_LIGHT0, GL_DIFFUSE, lightColor0);

      glLightfv(GL_LIGHT0, GL_POSITION, lightPos0);

//radius

      GLfloat lightColor1[] = {0.5f, 0.2f, 0.2f, 1.0f};

      GLfloat lightPos1[] = {-1.0f, 0.5f, 0.5f, 0.0f};

      glLightfv(GL_LIGHT1, GL_DIFFUSE, lightColor1);

      glLightfv(GL_LIGHT1, GL_POSITION, lightPos1);

      glRotatef(_angle, 1.0f, 0.0f, 0.0f);

     

      glBegin(GL_QUADS);

     

      //bangun 1

      //glNormal3f(0.0f, 0.0f, 1.0f);

    glColor3f(1.0f, 0.0f, 0.0f);

      glVertex3f(-1.5f, -1.0f, 1.5f);

    glVertex3f(1.5f, -1.0f, 1.5f);

    glVertex3f(1.5f, 1.0f, 1.5f);

      glVertex3f(-1.5f, 1.0f, 1.5f);

      //bangun 2

      //glNormal3f(0.0f, 0.0f, 1.0f);

    glColor3f(1.0f, 1.0f, 0.0f);

      //glVertex3f(-1.5f, -1.0f, 1.5f);

    //glVertex3f(1.5f, -1.0f, 1.5f);

    glVertex3f(1.5f, 1.0f, 1.5f);

      glVertex3f(1.5f, -1.0f, 1.5f);

      glVertex3f(1.5f, 1.0f, -1.5f);

      glVertex3f(1.5f, 1.0f, 1.5f);

     

      //bangun 3

      //glNormal3f(0.0f, 0.0f, 1.0f);

    glColor3f(1.0f, 1.0f, 1.0f);

    glVertex3f(1.5f, 1.0f, 1.5f);

      glVertex3f(-1.5f, 1.0f, 1.5f);

      glVertex3f(1.5f, 1.0f, -1.5f);

      glVertex3f(1.5f, 1.0f, -1.5f);

      //bangun 4

      //glNormal3f(0.0f, 0.0f, 1.0f);

    glColor3f(0.0f, 1.0f, 0.0f);

    glVertex3f(-1.5f, -1.0f, 1.5f);

      glVertex3f(1.5f, 1.0f, -1.5f);

      glVertex3f(-1.5f, 1.0f, 1.5f);

      glVertex3f(-1.5f, -1.0f, 1.5f);

     

      //bangun 5

      //glNormal3f(0.0f, 0.0f, 1.0f);

    glColor3f(1.0f, 0.0f, 1.0f);

    glVertex3f(-1.5f, -1.0f, 1.5f);

      glVertex3f(1.5f, -1.0f, 1.5f);

      glVertex3f(1.5f, 1.0f, -1.5f);

      glVertex3f(1.5f, 1.0f, -1.5f);

      glEnd();

     

      glutSwapBuffers();

}

void update(int value) {

      _angle += 1.5f;

      if (_angle > 360) {

            _angle -= 360;

      }

     

      glutPostRedisplay();

      glutTimerFunc(25, update, 0);

}

int main(int argc, char** argv) {

      glutInit(&argc, argv);

      glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);

      glutInitWindowSize(400, 400);

      glutCreateWindow("Lighting - videotutorialsrock.com");

      initRendering();

      glutDisplayFunc(drawScene);

      glutReshapeFunc(handleResize);     

      glutTimerFunc(25, update, 0);

     

      glutMainLoop();

      return 0;

}