Gambar Kubus Sederhana 3D dengan Opengl

Source Code :

#include <Windows.h>

#include <iostream>

#include <gl\GL.h>

#include <gl\GLU.h>

#include <gl\glut.h>

#include <math.h>

void cube()

{

//menggambar kubus dan transformasi tarnslasi ke titik 0.5 0.5 0.5 dan skala 1 1 1

glPushMatrix();

glTranslated(0.3,0.3,0.3);//cube

glScaled(0.4,0.4,0.4);

glutSolidCube(1.0);

glPopMatrix();

}

void setMaterial()

{

//set properties of surfaces material

GLfloat mat_ambient[] = {0.7f,0.7f,0.7f,1.0f}; // ada 4 jenis material yang dipakai, dengan kombinasi warna tertentu

GLfloat mat_diffuse[] = {0.6f,0.6f,0.6f,1.0f};

GLfloat mat_specular[] = {1.0f,1.0f,1.0f,1.0f};

GLfloat mat_shininess[] = {50.0f};

glMaterialfv(GL_FRONT,GL_AMBIENT,mat_ambient);

glMaterialfv(GL_FRONT,GL_DIFFUSE,mat_diffuse);

glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular);

glMaterialfv(GL_FRONT,GL_SHININESS,mat_shininess);

}

void setLighting()

{

//set light sources

GLfloat lightIntensity[] = {0.7f,0.7f,0.7f,1.0f};//mensetting pencahayaan

GLfloat light_position[] = {2.0f,6.0f,3.0f,0.0f};

glLightfv(GL_LIGHT0,GL_DIFFUSE,lightIntensity);

glLightfv(GL_LIGHT0,GL_POSITION,light_position);

}

void setViewport()

{

glMatrixMode(GL_PROJECTION);

glLoadIdentity();

double winHt = 1.0;//half height of the window

glOrtho(-winHt*64/48,winHt*64/48,-winHt,winHt,0.1,100.0);

}

void setCamera()

{

//set the camera

glMatrixMode(GL_MODELVIEW);

glLoadIdentity();

gluLookAt(9.3,2.3,5.0,0,0.25,0,0.0,3.0,0.0);

}

void displayObject()

{

setMaterial();

setLighting();

setViewport();

setCamera();

//startDrawing

glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

cube();//memanggil fungsi menggambar kubus

glFlush();//mengirim smua objek untuk dirender

}

int main(int argc, char **argv)

{

glutInit(&argc,argv);

glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB|GLUT_DEPTH);

glutInitWindowSize(640,480);

glutInitWindowPosition(100,100);

glutCreateWindow("3d grafkom");

glutDisplayFunc(displayObject);//fungsi dari display object yang menggabungkan kubus lighting material dan kamera

glEnable(GL_LIGHTING);

glEnable(GL_LIGHT0);

glShadeModel(GL_SMOOTH);

glEnable(GL_DEPTH_TEST);

glEnable(GL_NORMALIZE);

glClearColor(1.0f,1.0f,1.0f,0.0f);

glViewport(0,0,640,480);

glutMainLoop();

}

Screenshot :

Posted in: Materi Ilkom