private void drawArc(PaintEventArgs e, int width, int height)
{
CircleArc arc = circle.GetArc();
float startRadian = (float)arc.GetRadianInterval().Item1;
float radianWidth = (float)arc.GetArcWidth();
e.Graphics.DrawArc(arcPen,
new Rectangle(
width / 2 - circle.GetRadius(),
height / 2 - circle.GetRadius(),
circle.GetDiameter(),
circle.GetDiameter()
),
360 - (float)(startRadian) * 180f / (float)Math.PI,
(float)(radianWidth) * 180f / (float)Math.PI
);
}
public static bool AreColliding(PlayerDot playerDot, CircleArc circleArc)
{
double playerDotRadian = playerDot.GetRadian();
double circleArcBeginRadian = circleArc.GetRadianInterval().Item1;
double circleArcEndRadian = circleArc.GetRadianInterval().Item2;
if (circleArcBeginRadian < circleArcEndRadian)
{
circleArcBeginRadian += 2 * Math.PI;
if (playerDotRadian < circleArcEndRadian)
{
playerDotRadian += 2 * Math.PI;
}
}
return(circleArcBeginRadian >= playerDotRadian && circleArcEndRadian <= playerDotRadian);
}
public Circle(int radius)
{
this.radius = radius;
playerDot = new PlayerDot(radius);
circleArc = new CircleArc(0.5, Math.PI / 2);
}