7. Transformimet gjeometrike, zhvendosja

Deri tani kemi pare vetem ndertimin e objekteve te ndryshme, ndersa ne shembujt ne vazhdim do te shohim transformimin e tyre, zhvendosjen, zmadhimin ose zvogelimin dhe animacionin per te dizenjuar skenen tone 2D. Veprimet si zhvendosja, rrotullimi dhe shfromimi quhen transformime gjeometrike.

 Ushtrim: Ndertoni nje drejtkendesh dhe zhvendoseni ate me 100 njesi ne boshtin x

#include<gl/glut.h>

void Display()

{

  glClear(GL_COLOR_BUFFER_BIT);

  glTranslatef(100,0.0,0.0);

    glRectf(10.,0.,20.,10.);

  glFlush();

}

void init()

{

  glClearColor(1.0,0.0,0.0,1.0);

  glViewport(0,0,320,240);

  gluOrtho2D(0.0,160.0,0.0,120.0);

}

int main(int argc, char* argv[])

{

  glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);

  glutInitWindowSize(320,240);

  glutCreateWindow("Zhvendosje dhe Rrotullim");

  init();

  glutDisplayFunc(Display);

  glutMainLoop();

}

Ushtrim: Ndertoni nje program qe nderton nje drejtkendesh dhe e zhvendos ate 5 here me 10 njesi ne boshtin x

#include<gl/glut.h>

void Display()

{

  glClear(GL_COLOR_BUFFER_BIT);

  int x=10;

  for(int i=0;i<5;i++)

  {

  glTranslatef(3*x,0,0);

  glRectf(10.,0.,20.,10.);

    }

    glFlush();

}

void init()

{

  glClearColor(1.0,0.0,0.0,1.0);

  glViewport(0,0,320,240);

  gluOrtho2D(0.0,160.0,0.0,120.0);

}

int main(int argc, char* argv[])

{

  glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);

  glutInitWindowSize(320,240);

  glutCreateWindow("Test");

  init();

  glutDisplayFunc(Display);

  glutMainLoop();

}