/// <summary>
/// Returns the untransformed axis aligned bounding rectangle of the line cap defined by the given styles.
/// </summary>
public static Rectangle GetCapBounds(ICapStyle capStyle, ILineStyle lineStyle, float angleDeg)
{
if (capStyle == null)
{
throw new ArgumentNullException("capStyle");
}
if (lineStyle == null)
{
throw new ArgumentNullException("lineStyle");
}
Rectangle result = Geometry.InvalidRectangle;
PointF[] buffer = null;
GetCapPoints(capStyle, lineStyle, ref buffer);
// Transform cap points
_matrix.Reset();
_matrix.RotateAt(angleDeg + 90, Point.Empty);
// Scale GraphicsPath up for correcting the automatic scaling that is applied to
// LineCaps by GDI+ when altering the LineWidth of the pen
_matrix.Scale(lineStyle.LineWidth, lineStyle.LineWidth);
_matrix.TransformPoints(buffer);
Geometry.CalcBoundingRectangle(buffer, out result);
ShapeUtils.InflateBoundingRectangle(ref result, lineStyle);
return(result);
}
/// <override></override>
protected override Rectangle CalculateBoundingRectangle(bool tight)
{
Rectangle result;
Array.Copy(shapePoints, pointBuffer, pointBuffer.Length);
Matrix.Reset();
Matrix.RotateAt(Geometry.TenthsOfDegreeToDegrees(Angle), Point.Empty);
Matrix.TransformPoints(pointBuffer);
Geometry.CalcBoundingRectangle(pointBuffer, out result);
result.Offset(X, Y);
ShapeUtils.InflateBoundingRectangle(ref result, LineStyle);
return(result);
}
/// <override></override>
protected override Rectangle CalculateBoundingRectangle(bool tight)
{
Rectangle result = Geometry.InvalidRectangle;
if (Size >= 0)
{
result.X = X - (int)Math.Round(Size / 2f);
result.Y = Y - (int)Math.Round(Size / 2f);
result.Width = result.Height = Size;
if (Angle % 900 != 0)
{
Point tl, tr, bl, br;
Geometry.RotateRectangle(result, Center, Geometry.TenthsOfDegreeToDegrees(Angle), out tl, out tr, out br, out bl);
Geometry.CalcBoundingRectangle(tl, tr, bl, br, out result);
}
ShapeUtils.InflateBoundingRectangle(ref result, LineStyle);
}
return(result);
}
/// <override></override>
protected override Rectangle CalculateBoundingRectangle(bool tight)
{
Rectangle result = Geometry.InvalidRectangle;
if (tight)
{
if (DiameterInternal >= 0)
{
// No need to rotate the tight bounding rectangle of a circle
result.X = X - (int)Math.Round(Diameter / 2f);
result.Y = Y - (int)Math.Round(Diameter / 2f);
result.Width = result.Height = Diameter;
}
}
else
{
result = base.CalculateBoundingRectangle(tight);
}
if (Geometry.IsValid(result))
{
ShapeUtils.InflateBoundingRectangle(ref result, LineStyle);
}
return(result);
}
/// <summary>
/// Retuirns the BoundingRectangle of the shape.
/// This default implementation uses the GetBounds() method provided by the GraphicsPath class.
/// It is recommended to override this method with more shape specific versions that do not call base.
/// </summary>
/// <param name="tight">
/// If true, a thight fitting x axis aligned bounding rectangle will be returned.
/// If false, a x axis aligned bounding rectangle also containing all control points will be returned.
/// </param>
protected override Rectangle CalculateBoundingRectangle(bool tight)
{
if (tight)
{
Rectangle result = Rectangle.Empty;
if (drawCacheIsInvalid)
{
CalculatePath();
result = Rectangle.Ceiling(Path.GetBounds());
if (Angle != 0)
{
Point tl, tr, bl, br;
Geometry.RotateRectangle(result, Point.Empty, Geometry.TenthsOfDegreeToDegrees(Angle), out tl, out tr, out bl, out br);
Geometry.CalcBoundingRectangle(tl, tr, bl, br, out result);
}
result.Offset(X, Y);
}
else
{
result = Rectangle.Ceiling(Path.GetBounds());
}
ShapeUtils.InflateBoundingRectangle(ref result, LineStyle);
return(result);
}
else
{
Rectangle result = Rectangle.Empty;
if (drawCacheIsInvalid)
{
CalcControlPoints();
Point tl = Point.Empty, tr = Point.Empty, bl = Point.Empty, br = Point.Empty;
for (int i = ControlPoints.Length - 1; i >= 0; --i)
{
Point pt = ControlPoints[i];
if (pt.X <= tl.X && pt.Y <= tl.Y)
{
tl = pt;
}
if (pt.X >= tr.X && pt.Y <= tr.Y)
{
tr = pt;
}
if (pt.X <= bl.X && pt.Y >= bl.Y)
{
bl = pt;
}
if (pt.X >= br.X && pt.Y >= br.Y)
{
br = pt;
}
}
if (Angle != 0)
{
tl = Geometry.RotatePoint(Point.Empty, Geometry.TenthsOfDegreeToDegrees(Angle), tl);
tr = Geometry.RotatePoint(Point.Empty, Geometry.TenthsOfDegreeToDegrees(Angle), tr);
bl = Geometry.RotatePoint(Point.Empty, Geometry.TenthsOfDegreeToDegrees(Angle), bl);
br = Geometry.RotatePoint(Point.Empty, Geometry.TenthsOfDegreeToDegrees(Angle), br);
}
Geometry.CalcBoundingRectangle(tl, tr, bl, br, out result);
result.Offset(X, Y);
}
else
{
Geometry.CalcBoundingRectangle(ControlPoints, out result);
}
return(result);
}
}