/// <summary>
/// Adds the handles for the given bezier point.
/// </summary>
/// <param name="index">The index of the <c>KimonoBezierPoint</c> that handles are
/// being created for.</param>
/// <param name="bezierPoint">The <c>KimonoBezierPoint</c> that is getting handles.</param>
public void AddHandlesForPoint(int index, KimonoBezierPoint bezierPoint)
{
// Add new control point handle
var controlPoint = new KimonoHandle(bezierPoint.ControlPoint.X - KimonoHandle.DrawOffset,
bezierPoint.ControlPoint.Y - KimonoHandle.DrawOffset)
{
Index = index,
HandleType = KimonoHandleType.BezierControlPoint
};
controlPoint.Moved += (pt) =>
{
// Move attached point
Points[controlPoint.Index].ControlPoint = pt;
};
ControlPoints.Add(controlPoint);
// Add new end point handle
var endPoint = new KimonoHandle(bezierPoint.EndPoint.X - KimonoHandle.DrawOffset,
bezierPoint.EndPoint.Y - KimonoHandle.DrawOffset)
{
Index = index
};
endPoint.Moved += (pt) =>
{
// Move attached point
Points[endPoint.Index].EndPoint = pt;
};
ControlPoints.Add(endPoint);
}
/// <summary>
/// Clone this instance.
/// </summary>
/// <returns>The clone.</returns>
public KimonoBezierPoint Clone()
{
// Make new copy
var newPoint = new KimonoBezierPoint(this.ControlPoint.X, this.ControlPoint.Y, this.EndPoint.X, this.EndPoint.Y);
// Return new copy
return(newPoint);
}
/// <summary>
/// Adds the given point to the shape.
/// </summary>
/// <param name="point">The new <c>SKPoint</c> to add.</param>
public void AddPoint(SKPoint point)
{
// is this the first point added?
if (Points.Count > 0)
{
// No, grab first point
var firstPoint = Points[0];
// Is the new point within five pixels of the first point?
if (point.X > (firstPoint.EndPoint.X - 5) && point.X < (firstPoint.EndPoint.X + 5) &&
point.Y > (firstPoint.EndPoint.Y - 5) && point.Y < (firstPoint.EndPoint.Y + 5))
{
// Yes, close the shape and complete editing
point.X = firstPoint.EndPoint.X;
point.Y = firstPoint.EndPoint.Y;
State = KimonoShapeState.Finalizing;
}
}
// Get defaul control point locations
var x = point.X;
var y = point.Y;
// Was there a last point added?
if (LastPoint != null)
{
// Yes, calculate default quad position
x = LastPoint.EndPoint.X + ((point.X - LastPoint.EndPoint.X) / 2f);
y = LastPoint.EndPoint.Y + ((point.Y - LastPoint.EndPoint.Y) / 2f);
}
// Add point and recalculate bounds
var bezierPoint = new KimonoBezierPoint(x, y, point.X, point.Y);
Points.Add(bezierPoint);
RecalculateVectorBounds();
// Are we in the editing mode?
if (State == KimonoShapeState.Editing || State == KimonoShapeState.Finalizing)
{
// Add a new drag handle for the new point
AddHandlesForPoint(Points.Count - 1, bezierPoint);
}
}
