public static void CreateArc(EpsInterpreter interpreter, bool sweepDirection)
{
var operandStack = interpreter.OperandStack;
GraphicsState graphicState = interpreter.GraphicState;
var angle2 = operandStack.PopRealValue();
var angle1 = operandStack.PopRealValue();
var r = operandStack.PopRealValue();
var y = operandStack.PopRealValue();
var x = operandStack.PopRealValue();
// be aware the segment converter returns coordinates in user space
var(segments, startPoint, currentPoint) = ArcToPathSegmentConverter.ArcToPathSegments(new Point(x, y), r, angle1, angle2, sweepDirection);
if (graphicState.CurrentGeometry == null)
{
graphicState.CurrentGeometry = new GraphicPathGeometry();
var point = MatrixUtilities.TransformPoint(startPoint, graphicState.CurrentTransformationMatrix);
var move = new GraphicMoveSegment {
StartPoint = point
};
graphicState.CurrentGeometry.Segments.Add(move);
graphicState.LastMove = move;
}
else
{
var point = MatrixUtilities.TransformPoint(startPoint, graphicState.CurrentTransformationMatrix);
var lineSegment = new GraphicLineSegment {
To = point
};
graphicState.CurrentGeometry.Segments.Add(lineSegment);
}
var transformVisual = new TransformVisual();
var transformedSegments = transformVisual.TransformSegments(segments, graphicState.CurrentTransformationMatrix);
graphicState.CurrentGeometry.Segments.AddRange(transformedSegments);
graphicState.CurrentPoint = currentPoint;
}
