public void ProcessArc(ShxGlyphCommandFractionalArc a)
{
var arc = FromArcCommand(a, ref _lastPoint);
if (_isDrawing)
{
Paths.Add(arc);
}
}
public static ShxArc FromArcCommand(ShxGlyphCommandFractionalArc a, ref ShxPoint lastPoint)
{
var radius = a.HighRadius * 256.0 + a.Radius;
var startOctantAngle = a.StartingOctant * 45.0;
var endOctantAngle = (a.StartingOctant + a.OctantCount - 1) * 45.0;
var startAngleDegrees = (45.0 * a.StartOffset / 256.0) + startOctantAngle;
var startAngleRadians = startAngleDegrees * Math.PI / 180.0;
var endAngleDegrees = (45.0 * a.EndOffset / 256.0) + endOctantAngle;
var endAngleRadians = endAngleDegrees * Math.PI / 180.0;
var startVector = ShxPoint.FromAngleRadians(startAngleRadians) * radius;
var endVector = ShxPoint.FromAngleRadians(endAngleRadians) * radius;
var center = lastPoint - startVector;
lastPoint = center + endVector;
var arc = new ShxArc(center, radius, startAngleRadians, endAngleRadians);
return(arc);
}