org.scilab.forge.scirenderer.implementation.g2d.motor

Class PolyLine

java.lang.Object

org.scilab.forge.scirenderer.implementation.g2d.motor.AbstractDrawable3DObject

org.scilab.forge.scirenderer.implementation.g2d.motor.ConvexObject

org.scilab.forge.scirenderer.implementation.g2d.motor.PolyLine

All Implemented Interfaces:

Clippable

public class PolyLine
extends ConvexObject

Class to represent a polyline object. This is used only in 2D (in 3D, a line could begin on front of a face and could end behind it). This allows to draw a polyline like a polyline ! and not as a set of segments. Notice that a PolyLine is NOT a convex object... but in 2D it does not matter, algorithms which use the convexity are not applyed.

Author:

Calixte DENIZET

Field Summary

Fields

Modifier and Type	Field and Description
protected double[]	clip

Fields inherited from class org.scilab.forge.scirenderer.implementation.g2d.motor.AbstractDrawable3DObject

bbox, color, colors, normal, nv0v1, precedence, PRECISION, v0, v0v1, v1, vertices

Constructor Summary

Constructors

Constructor and Description
PolyLine(Vector3d[] vertices, java.awt.Color[] colors, G2DStroke stroke) Default constructor

Method Summary

Modifier and Type	Method and Description
java.util.List<ConvexObject>	breakObject(ConvexObject o) Abstract method Break this ConvexObject against the ConvexObject o
java.util.List<ConvexObject>	breakObject(Vector4d v) Break this ConvexObject against a plane
void	draw(java.awt.Graphics2D g2d) Draw this object on a Graphics2D object
Vector3d	getNormal() Get the normal vector.
static java.util.List<PolyLine>	getPolyLines(Vector3d[] vertices, java.awt.Color[] colors, G2DStroke stroke, boolean loop) Get a set of polylines.
protected boolean	isDegenerate()
protected boolean	isNanOrInf()
protected boolean	isPlanar() Determinates if the object is contained into a plane

Methods inherited from class org.scilab.forge.scirenderer.implementation.g2d.motor.ConvexObject

addArea, areCoplanar, check, check2DIntersection, check2DTrueIntersection, drawAreas, isBehind

Methods inherited from class org.scilab.forge.scirenderer.implementation.g2d.motor.AbstractDrawable3DObject

getClip, getColorsBarycenter, getPrecedence, getProjectedContour, getProjectedPolyLine, getProvidedNormal, isBehind, isBehind, isEqual, isGreaterOrEqual, isLowerOrEqual, isMonochromatic, isNanOrInf, isNegativeOrNull, isNull, isPositiveOrNull, makeClip, minmax2D, minmax3D, resetDefaultPrecedence, setNormal, setPrecedence

Methods inherited from class java.lang.Object

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

Field Detail

clip

protected double[] clip

Constructor Detail

PolyLine

public PolyLine(Vector3d[] vertices,
                java.awt.Color[] colors,
                G2DStroke stroke)
         throws InvalidPolygonException

Default constructor

Parameters:

vertices - the polyline vertices

colors - the vertices color

stroke - the stroke to used

Throws:

InvalidPolygonException

Method Detail

getPolyLines

public static java.util.List<PolyLine> getPolyLines(Vector3d[] vertices,
                                                    java.awt.Color[] colors,
                                                    G2DStroke stroke,
                                                    boolean loop)

Get a set of polylines. The Nan of Inf vectors are removed and so the polyline is splitted.

Parameters:

vertices - the polyline vertices

colors - the vertices color

stroke - the stroke to used

loop - if true a looping polyline is created

Returns:

a set of polylines

breakObject

public java.util.List<ConvexObject> breakObject(Vector4d v)

Break this ConvexObject against a plane

Specified by:

breakObject in interface Clippable

Specified by:

breakObject in class ConvexObject

Parameters:

v - plane definition

Returns:

a list of ConvexObject.

breakObject

public java.util.List<ConvexObject> breakObject(ConvexObject o)

Abstract method Break this ConvexObject against the ConvexObject o

Specified by:

breakObject in class ConvexObject

Parameters:

o - a ConvexObject

Returns:

a list of ConvexObject.

isDegenerate

protected boolean isDegenerate()

Overrides:

isDegenerate in class AbstractDrawable3DObject

Returns:

true if there are two vertices which are indentical

isNanOrInf

protected boolean isNanOrInf()

Overrides:

isNanOrInf in class AbstractDrawable3DObject

getNormal

public Vector3d getNormal()

Get the normal vector. If no normal vector has been set then it is calculated in using the cross product of the first two vectors.

Overrides:

getNormal in class AbstractDrawable3DObject

Returns:

the normal vector.

isPlanar

protected boolean isPlanar()

Determinates if the object is contained into a plane

Overrides:

isPlanar in class AbstractDrawable3DObject

Returns:

true if the object is planar

draw

public void draw(java.awt.Graphics2D g2d)

Description copied from class: AbstractDrawable3DObject

Draw this object on a Graphics2D object

Specified by:

draw in class AbstractDrawable3DObject

Parameters:

g2d - the Graphics2d object where to draw