void drawArc(Point2 centre, float radius, float startAngle, float sweep)
{
Turtle t;
const int n = 30;
float angle = startAngle * M_PI / 180;
float angleInc = sweep * M_PI / (180 * n);
float cx = centre.getX(), cy = centre.getY();
t.moveTo(Point2(cx + radius*cos(angle), cy + radius*sin(angle)));
for (int k = 1; k < n; k++, angle += angleInc)
{
t.lineTo(Point2(cx + radius*cos(angle), cy + radius*sin(angle)));
}
}
void drawArc(Point centre, float radius, float startAngle, float sweep)
{
Turtle t;
const int n = 30;
float angle = startAngle * M_PI / 180; //convert to radian
float angleInc = sweep * M_PI / (180 * n);
float cx = centre.getX(), cy = centre.getY(); //200,200
float a, b;
a = cx + radius*cos(angle);
b = cy + radius*sin(angle);
t.moveTo(Point(a, b));
for (int k = 1; k < n; k++, angle += angleInc)
{
t.lineTo(Point(cx + radius*cos(angle), cy + radius*sin(angle)));
}
}