private void button2_Click(object sender, EventArgs e)
{
MyVector v1 = new MyVector(1, 0, 0);
MyVector v2 = new MyVector(0, 1, 0);
MyVector rotationAxis;
double radians;
v1.GetAngleAroundAxis(out rotationAxis, out radians, v2);
v2.GetAngleAroundAxis(out rotationAxis, out radians, v1);
}
private List <BallBlip> FindBlipsInCone(MyVector centerWorld, MyVector dirFacingWorld)
{
List <BallBlip> retVal = new List <BallBlip>();
// Cache some stuff for use inside the loop
double halfSweepAngle = _sweepAngle / 2d;
double maxDistSquared = _maxDistance * _maxDistance;
// Scan for objects in my path
foreach (RadarBlip blip in _map.GetAllBlips())
{
if (blip.Token == _ship.Token)
{
// Can't manipulate me
continue;
}
if (blip.CollisionStyle == CollisionStyle.Ghost)
{
// Ghost blips don't interact with anything
continue;
}
if (!(blip is BallBlip))
{
// The blip needs to be at least a ball
continue;
}
MyVector lineBetween = blip.Sphere.Position - centerWorld;
if (lineBetween.GetMagnitudeSquared() > maxDistSquared)
{
// The object is too far away
continue;
}
MyVector rotationAxis;
double rotationRadians;
dirFacingWorld.GetAngleAroundAxis(out rotationAxis, out rotationRadians, lineBetween);
if (rotationRadians > halfSweepAngle)
{
// The sweep angle is too great (not inside the cone)
continue;
}
// It's inside the cone
retVal.Add(blip as BallBlip);
}
// Exit Function
return(retVal);
}
public void FillPie(Brush brush, MyVector centerPoint, double radius, MyVector centerLine, double sweepRadians)
{
// Turn the centerline and sweep radians into angles that GDI likes
MyVector dummy = new MyVector(1, 0, 0);
double startDegrees;
dummy.GetAngleAroundAxis(out dummy, out startDegrees, centerLine);
startDegrees = Utility3D.GetRadiansToDegrees(startDegrees);
if (centerLine.Y < 0)
{
startDegrees *= -1;
}
double sweepDegrees = Utility3D.GetRadiansToDegrees(sweepRadians);
startDegrees -= sweepDegrees / 2d;
// Call my overload
FillPie(brush, centerPoint, radius, startDegrees, sweepDegrees);
}