/// <summary>
/// Calculates and angle in degrees based on a value, a value range, an angle range and a sweep direction.
/// </summary>
/// <param name="context">A context that contains the value to be converted to an angle.</param>
/// <returns>Returns an angle in radians that corresponds to the provided value in the context.</returns>
internal static double CalculateAngle(CalculateAngleContext context)
{
double angleDeg = RadGauge.MapLogicalToPhysicalValue(context.value - context.startValue, context.gaugePhysicalLength, context.gaugeLogicalLength);
var angle = RadialGaugePanel.ConvertDegreesToRadians(angleDeg);
return(RadialGaugePanel.ConvertDegreesToRadians(context.minAngle) + angle);
}
private CalculateAngleContext CreateCalculateAngleContext(double value)
{
var gauge = (RadRadialGauge)this.Owner.OwnerGauge;
var gaugeLogicalLength = gauge.MaxValue - gauge.MinValue;
var gaugePhysicalLength = gauge.MaxAngle - gauge.MinAngle;
CalculateAngleContext result = new CalculateAngleContext(
this.Owner.OwnerGauge.MinValue,
value,
this.minAngle,
this.maxAngle,
gaugeLogicalLength,
gaugePhysicalLength);
return(result);
}
