/// <summary>
/// Creates a new <see cref="LcdGdiRectangle"/> with the specified pen for the edge,
/// brush for the fill and rectangle dimensions.
/// </summary>
/// <param name="pen">Pen to use to draw the edge of this object.</param>
/// <param name="brush">Brush to use to draw the fill of this object.</param>
/// <param name="rectangle">Rectangle dimensions.</param>
public LcdGdiRectangle(Pen pen, Brush brush, RectangleF rectangle)
{
Pen = pen;
Brush = brush;
Margin = new MarginF(rectangle.Location.X, rectangle.Location.Y, 0.0f, 0.0f);
Size = rectangle.Size;
}
/// <summary>
/// Creates a new <see cref="LcdGdiArc"/> with the specified pen, dimensions, start angle and sweep angle.
/// </summary>
/// <param name="pen">Pen to use to draw the edge of this object.</param>
/// <param name="rectangle">Rectangle dimensions.</param>
/// <param name="startAngle">Angle in degrees measured clockwise from the x-axis to the starting point of the arc.</param>
/// <param name="sweepAngle">Angle in degrees measured clockwise from <paramref name="startAngle"/> to ending point of the arc.</param>
public LcdGdiArc(Pen pen, RectangleF rectangle, float startAngle, float sweepAngle)
{
Pen = pen;
Margin = new MarginF(rectangle.Location.X, rectangle.Location.Y, 0.0f, 0.0f);
Size = rectangle.Size;
_startAngle = startAngle;
_sweepAngle = sweepAngle;
}
/// <summary>
/// Calculates the size of the objects from the points, computes margin and makes points relative if needed.
/// </summary>
/// <param name="points">Points defining the object.</param>
/// <param name="keepAbsolute">Whether the given points are left untouched.
/// <see cref="LcdGdiAbsObject.KeepAbsolute"/> for details.</param>
protected void CalcAndSetPoints(PointF[] points, bool keepAbsolute)
{
if (points == null)
{
throw new ArgumentNullException("points");
}
if (points.Length == 0)
{
throw new ArgumentOutOfRangeException("points", "There must be at least 1 point in the points array.");
}
PointF firstPoint = points[0];
float minX = firstPoint.X;
float minY = firstPoint.Y;
float maxX = firstPoint.X;
float maxY = firstPoint.Y;
for (int i = 1; i < points.Length; ++i)
{
PointF point = points[i];
minX = Math.Min(minX, point.X);
minY = Math.Min(minY, point.Y);
maxX = Math.Max(maxX, point.X);
maxY = Math.Max(maxY, point.Y);
}
if (!keepAbsolute)
{
Margin = new MarginF(minX, minY, 0.0f, 0.0f);
maxX -= minX;
maxY -= minY;
for (int i = 0; i < points.Length; ++i)
{
PointF point = points[i];
point.X -= minX;
point.Y -= minY;
points[i] = point;
}
}
_points = points;
_keepAbsolute = keepAbsolute;
Size = new SizeF(maxX, maxY);
HasChanged = true;
}
/// <summary>
/// Changes both the starting point and the ending point of this line.
/// </summary>
/// <param name="startPoint">Starting point of this line.</param>
/// <param name="endPoint">Ending point of this line.</param>
public void SetPoints(PointF startPoint, PointF endPoint)
{
Margin = new MarginF(Math.Min(startPoint.X, endPoint.X), Math.Min(startPoint.Y, endPoint.Y), 0.0f, 0.0f);
Size = new SizeF(endPoint.X - startPoint.X, endPoint.Y - startPoint.Y);
}