public AngleHelper(int textDistance, int radius, bool tenth, string symbol)
{
this.textDistance = textDistance;
this.radius = radius;
this.tenth = tenth;
this.symbol = symbol;
SweepAngle = new SweepAngle();
}
/// <summary>
/// Takes point in image space and compute various values necessary to measure and draw the angle.
/// </summary>
public void Update(PointF o, PointF a, PointF b, bool signed, bool ccw, bool supplementary, CalibrationHelper calibration)
{
if (o == a || o == b)
{
return;
}
if (supplementary)
{
// Supplementary angle to 180°.
// Point symmetry around o to find the actual second leg.
PointF c = new PointF(2 * o.X - a.X, 2 * o.Y - a.Y);
// Both drawing and value are impacted by this directly so we can just swap the new legs in.
a = b;
b = c;
}
SweepAngle.Update(o, a, b, (float)radius, signed, ccw);
CalibratedAngle = ComputeCalibratedAngle(o, a, b, signed, ccw, calibration);
}