CODEWITHSUNDEEP
c++openglrotation
golazo
golazo

Reputation: 327

how can i rotate my object in opengl

i rotate my object, that is a triangle . But my object's center moves. 

      //background draw
DrawScreen();
glPushMatrix();

glTranslatef(xgotur,ygotur,zgotur);
glRotatef(derece,0.0,0.0,1.0);

      // drawing my object
glBegin(GL_POLYGON);
    glColor3d(0.2, 0.5, 0.7);
    glVertex2f(-0.1+aralik_bosluk, 0.0+aralik_bosluk);
    glVertex2f(0.0+aralik_bosluk,0.4+aralik_bosluk);
    glVertex2f(0.1+aralik_bosluk, 0.0+aralik_bosluk);
glEnd();    
      // finish draw
glPopMatrix();

Upvotes: 1

Views: 531

Answers (1)

ChapMic
ChapMic

Reputation: 28114

When you rotate an object with glRotate(), it will rotate around the World Origin and not the origin of your object.

You should check a good example here about how to rotate your object around a Local Origin :

Rotation Local Origin

Upvotes: 6

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