proland::Margin Class Reference
[graph]

Determines how a clip region must be extended to clip a Graph, depending on its content. More...

#include <Margin.h>

Inheritance diagram for proland::Margin:

List of all members.

Public Member Functions
virtual double	getMargin (double clipSize)=0
	Returns the margin for the given clip region.
virtual double	getMargin (double clipSize, CurvePtr p)=0
	Returns the margin for the given curve.
virtual double	getMargin (double clipSize, AreaPtr a)
	Returns the margin for the given area.

---

Detailed Description

Determines how a clip region must be extended to clip a Graph, depending on its content.

In order to take curve widths into account during clipping, the clip area is enlarged with a margin to avoid clipping curves whose axis is outside the clip region, but not their borders (see Graph producer).

Author:

Antoine Begault

---

Member Function Documentation

virtual double proland::Margin::getMargin	(	double	clipSize,
		AreaPtr	a
	)			[virtual]

Returns the margin for the given area.

This margin will be added to the clip region in order to clip this area.

Parameters:

	clipSize	size of the clip region (width or height).
	a	an area.

Reimplemented in proland::WaterElevationLayer::WaterElevationMargin, and proland::ComposedMargin.

virtual double proland::Margin::getMargin	(	double	clipSize,
		CurvePtr	p
	)			[pure virtual]

Returns the margin for the given curve.

This margin will be added to the clip region in order to clip this curve.

Parameters:

	clipSize	size of the clip region (width or height).
	p	a curve.

Implemented in proland::RoadElevationLayer::RoadElevationMargin, proland::WaterElevationLayer::WaterElevationMargin, proland::ComposedMargin, and proland::OrthoMargin.

virtual double proland::Margin::getMargin

(

double

clipSize

)

[pure virtual]

Returns the margin for the given clip region.

This margin will be added to the clip region in order to clip a graph.

Parameters:

clipSize

size of the clip region (width or height).

Implemented in proland::ElevationMargin, proland::ComposedMargin, and proland::OrthoMargin.