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# rgc183

Member Since 12 Dec 2012
Offline Last Active Oct 05 2014 11:23 PM

### #5091215Animation with glut

Posted by on 02 September 2013 - 11:59 PM

I am trying to do animation using glut. I have 2 squares overlapping to each other and i want other square to rotate around this central object without rotating themselves. I want to rotate in orbit manner. I am calculating circular path using parametric equation and translating that one of the square to that distance. i am calling this function in a loop

Here is my code which is not working as per expected. Let me know where it is going wrong.
I have added expected image as well

```
void DrawShapes()
{
static float angle = 0;

glClear(GL_COLOR_BUFFER_BIT);

glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glColor3f(0.0f, 0.3f, 0.2f);

glBegin(GL_POLYGON);
glVertex2f(-0.2, -0.2);
glVertex2f(0.2, -0.2);
glVertex2f(0.2, 0.2);
glVertex2f(-0.2, 0.2);
glEnd();

static int i = 0;
distance_x = 0.3 * cos(i*3.14 / 180);
distance_y = 0.3* sin(i*3.14 / 180);
i++;
if (i > 360)
i = 0;

glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glTranslatef(distance_x, distance_x, 0.0);
glBegin(GL_POLYGON);
glVertex2f(-0.2, -0.2);
glVertex2f(0.2, -0.2);
glVertex2f(0.2, 0.2);
glVertex2f(-0.2, 0.2);
glEnd();

glPopMatrix();
glutSwapBuffers();

}
```

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