org.mdiutil.geom

Class CurveConverter

java.lang.Object

org.mdiutil.geom.CurveConverter

public class CurveConverter
extends Object

This class convert a set of Curves to Arcs. To use it, you must:

• call endArc() to force the end of the current Arc
• call addCubicCurve(CubicCurve2D) for each new CubicCurve
• call addQuadCurve(QuadCurve2D) for each new QuadCurve

After each order, retrieve the state of the converter and then the corresponding Arc if the state is equal to END_ARC. Remark: if a curve is flat, the algorithm will create a Line and then end the current curve.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	CurveConverter.AngleSegment Represents an Angle Segment.

Field Summary

Fields

Modifier and Type	Field and Description
static int	CURRENT_ARC The current state of the converter when an Arc is detected.
static int	END_ARC The current state of the converter when the end of an Arc is detected.
static int	NO_ARC The current state of the converter when no Arc is detected.

Constructor Summary

Constructors

Constructor and Description
CurveConverter() Constructor of the converter.
CurveConverter(boolean allowCircles) Constructor of the converter.

Method Summary

Modifier and Type	Method and Description
int	addCubicCurve(CubicCurve2D cubic) Add a CubicCurve to the curve Vector.
int	addQuadCurve(QuadCurve2D quad) Add a QuadCurve to the Curve Vector.
void	allowCircles(boolean allowCircles) Set the conversion policy.
void	clear() Clear this converter to allow the creation of new Curves.
int	endArc() Force the end of an Arc.
int	getCurrentState() Return the current state.
Shape	getLastShape() Return the last Shape issued from the conversion process.
List<Shape>	getShapes() Return the Shapes issued from the conversion process.
boolean	hasShapes() Return true if this converter contain some converted Shapes.
boolean	isAllowingCircles() Return the conversion policy.
protected List<Shape>	toArc2D() Convert the current curve Vector to a Vector of Arc2D.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NO_ARC

public static final int NO_ARC

The current state of the converter when no Arc is detected.

See Also:

Constant Field Values

CURRENT_ARC

public static final int CURRENT_ARC

The current state of the converter when an Arc is detected.

See Also:

Constant Field Values

END_ARC

public static final int END_ARC

The current state of the converter when the end of an Arc is detected.

See Also:

Constant Field Values

Constructor Detail

CurveConverter

public CurveConverter()

Constructor of the converter. The initialization state is NO_ARC.

CurveConverter

public CurveConverter(boolean allowCircles)

Constructor of the converter. The initialization state is NO_ARC.

Parameters:

allowCircles - tyue if circles are allowed as results of the conversion

Method Detail

clear

public void clear()

Clear this converter to allow the creation of new Curves.

getCurrentState

public int getCurrentState()

Return the current state.

Returns:

the current state

isAllowingCircles

public boolean isAllowingCircles()

Return the conversion policy.

Returns:

true if circles are allowaed in the conversion

allowCircles

public void allowCircles(boolean allowCircles)

Set the conversion policy.

Parameters:

allowCircles - true if circles are allowaed in the conversion

getLastShape

public Shape getLastShape()

Return the last Shape issued from the conversion process. It can either be a Line2D or an Arc2D.

Returns:

the last Shape issued from the conversion process

getShapes

public List<Shape> getShapes()

Return the Shapes issued from the conversion process. The associated Vector is composed of Line2D and Arc2D elements.

Returns:

the Shapes issued from the conversion process

hasShapes

public boolean hasShapes()

Return true if this converter contain some converted Shapes.

Returns:

true if this converter contain some converted Shapes

endArc

public int endArc()

Force the end of an Arc.

Returns:

the resulting state, which is END_ARC if the state is CURRENT_ARC, and NO_ARC else

addCubicCurve

public int addCubicCurve(CubicCurve2D cubic)

Add a CubicCurve to the curve Vector.

Parameters:

cubic - the CubicCurve

Returns:

the resulting state

addQuadCurve

public int addQuadCurve(QuadCurve2D quad)

Add a QuadCurve to the Curve Vector.

Parameters:

quad - the QuadCurve

Returns:

the resulting state

toArc2D

protected List<Shape> toArc2D()

Convert the current curve Vector to a Vector of Arc2D.

Returns:

the converted Shapes