All Implemented Interfaces:

Stroke
```
public class BasicStroke
extends Object
implements Stroke
```
The BasicStroke class defines a basic set of rendering attributes for the outlines of graphics primitives, which are rendered with a Graphics2D object that has its Stroke attribute set to this BasicStroke. The rendering attributes defined by BasicStroke describe the shape of the mark made by a pen drawn along the outline of a Shape and the decorations applied at the ends and joins of path segments of the Shape. These rendering attributes include:

width
The pen width, measured perpendicularly to the pen trajectory.
end caps
The decoration applied to the ends of unclosed subpaths and dash segments. Subpaths that start and end on the same point are still considered unclosed if they do not have a CLOSE segment. See SEG_CLOSE for more information on the CLOSE segment. The three different decorations are: CAP_BUTT, CAP_ROUND, and CAP_SQUARE.
line joins
The decoration applied at the intersection of two path segments and at the intersection of the endpoints of a subpath that is closed using SEG_CLOSE. The three different decorations are: JOIN_BEVEL, JOIN_MITER, and JOIN_ROUND.
miter limit
The limit to trim a line join that has a JOIN_MITER decoration. A line join is trimmed when the ratio of miter length to stroke width is greater than the miterlimit value. The miter length is the diagonal length of the miter, which is the distance between the inside corner and the outside corner of the intersection. The smaller the angle formed by two line segments, the longer the miter length and the sharper the angle of intersection. The default miterlimit value of 10.0f causes all angles less than 11 degrees to be trimmed. Trimming miters converts the decoration of the line join to bevel.
dash attributes
The definition of how to make a dash pattern by alternating between opaque and transparent sections.
All attributes that specify measurements and distances controlling the shape of the returned outline are measured in the same coordinate system as the original unstroked Shape argument. When a Graphics2D object uses a Stroke object to redefine a path during the execution of one of its draw methods, the geometry is supplied in its original form before the Graphics2D transform attribute is applied. Therefore, attributes such as the pen width are interpreted in the user space coordinate system of the Graphics2D object and are subject to the scaling and shearing effects of the user-space-to-device-space transform in that particular Graphics2D. For example, the width of a rendered shape's outline is determined not only by the width attribute of this BasicStroke, but also by the transform attribute of the Graphics2D object. Consider this code:
// sets the Graphics2D object's Tranform attribute g2d.scale(10, 10); // sets the Graphics2D object's Stroke attribute g2d.setStroke(new BasicStroke(1.5f));
Assuming there are no other scaling transforms added to the Graphics2D object, the resulting line will be approximately 15 pixels wide. As the example code demonstrates, a floating-point line offers better precision, especially when large transforms are used with a Graphics2D object. When a line is diagonal, the exact width depends on how the rendering pipeline chooses which pixels to fill as it traces the theoretical widened outline. The choice of which pixels to turn on is affected by the antialiasing attribute because the antialiasing rendering pipeline can choose to color partially-covered pixels.
For more information on the user space coordinate system and the rendering process, see the Graphics2D class comments.

See Also:
Graphics2D

Field Summary

Fields
Modifier and Type	Field and Description
`static int`	`CAP_BUTT` Ends unclosed subpaths and dash segments with no added decoration.
`static int`	`CAP_ROUND` Ends unclosed subpaths and dash segments with a round decoration that has a radius equal to half of the width of the pen.
`static int`	`CAP_SQUARE` Ends unclosed subpaths and dash segments with a square projection that extends beyond the end of the segment to a distance equal to half of the line width.
`static int`	`JOIN_BEVEL` Joins path segments by connecting the outer corners of their wide outlines with a straight segment.
`static int`	`JOIN_MITER` Joins path segments by extending their outside edges until they meet.
`static int`	`JOIN_ROUND` Joins path segments by rounding off the corner at a radius of half the line width.

Constructor Summary

Constructors
Constructor and Description
`BasicStroke()` Constructs a new `BasicStroke` with defaults for all attributes.
`BasicStroke(float width)` Constructs a solid `BasicStroke` with the specified line width and with default values for the cap and join styles.
`BasicStroke(float width, int cap, int join)` Constructs a solid `BasicStroke` with the specified attributes.
`BasicStroke(float width, int cap, int join, float miterlimit)` Constructs a solid `BasicStroke` with the specified attributes.
`BasicStroke(float width, int cap, int join, float miterlimit, float[] dash, float dash_phase)` Constructs a new `BasicStroke` with the specified attributes.

Method Summary

Methods
Modifier and Type	Method and Description
`Shape`	`createStrokedShape(Shape s)` Returns a `Shape` whose interior defines the stroked outline of a specified `Shape`.
`boolean`	`equals(Object obj)` Tests if a specified object is equal to this `BasicStroke` by first testing if it is a `BasicStroke` and then comparing its width, join, cap, miter limit, dash, and dash phase attributes with those of this `BasicStroke`.
`float[]`	`getDashArray()` Returns the array representing the lengths of the dash segments.
`float`	`getDashPhase()` Returns the current dash phase.
`int`	`getEndCap()` Returns the end cap style.
`int`	`getLineJoin()` Returns the line join style.
`float`	`getLineWidth()` Returns the line width.
`float`	`getMiterLimit()` Returns the limit of miter joins.
`int`	`hashCode()` Returns the hashcode for this stroke.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - JOIN_MITER
```
public static final int JOIN_MITER
```
    Joins path segments by extending their outside edges until they meet.
    
    See Also:
    Constant Field Values
  - JOIN_ROUND
```
public static final int JOIN_ROUND
```
    Joins path segments by rounding off the corner at a radius of half the line width.
    
    See Also:
    Constant Field Values
  - JOIN_BEVEL
```
public static final int JOIN_BEVEL
```
    Joins path segments by connecting the outer corners of their wide outlines with a straight segment.
    
    See Also:
    Constant Field Values
  - CAP_BUTT
```
public static final int CAP_BUTT
```
    Ends unclosed subpaths and dash segments with no added decoration.
    
    See Also:
    Constant Field Values
  - CAP_ROUND
```
public static final int CAP_ROUND
```
    Ends unclosed subpaths and dash segments with a round decoration that has a radius equal to half of the width of the pen.
    
    See Also:
    Constant Field Values
  - CAP_SQUARE
```
public static final int CAP_SQUARE
```
    Ends unclosed subpaths and dash segments with a square projection that extends beyond the end of the segment to a distance equal to half of the line width.
    
    See Also:
    Constant Field Values
- Constructor Detail
  - BasicStroke
```
@ConstructorProperties(value={"lineWidth","endCap","lineJoin","miterLimit","dashArray","dashPhase"})
public BasicStroke(float width,
                                      int cap,
                                      int join,
                                      float miterlimit,
                                      float[] dash,
                                      float dash_phase)
```
    Constructs a new BasicStroke with the specified attributes.
    
    Parameters:
    width - the width of this BasicStroke. The width must be greater than or equal to 0.0f. If width is set to 0.0f, the stroke is rendered as the thinnest possible line for the target device and the antialias hint setting.
    cap - the decoration of the ends of a BasicStroke
    join - the decoration applied where path segments meet
    miterlimit - the limit to trim the miter join. The miterlimit must be greater than or equal to 1.0f.
    dash - the array representing the dashing pattern
    dash_phase - the offset to start the dashing pattern
    
    Throws:
    
    IllegalArgumentException - if width is negative
    
    IllegalArgumentException - if cap is not either CAP_BUTT, CAP_ROUND or CAP_SQUARE
    
    IllegalArgumentException - if miterlimit is less than 1 and join is JOIN_MITER
    
    IllegalArgumentException - if join is not either JOIN_ROUND, JOIN_BEVEL, or JOIN_MITER
    
    IllegalArgumentException - if dash_phase is negative and dash is not null
    
    IllegalArgumentException - if the length of dash is zero
    
    IllegalArgumentException - if dash lengths are all zero.
  - BasicStroke
```
public BasicStroke(float width,
           int cap,
           int join,
           float miterlimit)
```
    Constructs a solid BasicStroke with the specified attributes.
    
    Parameters:
    width - the width of the BasicStroke
    cap - the decoration of the ends of a BasicStroke
    join - the decoration applied where path segments meet
    miterlimit - the limit to trim the miter join
    
    Throws:
    
    IllegalArgumentException - if width is negative
    
    IllegalArgumentException - if cap is not either CAP_BUTT, CAP_ROUND or CAP_SQUARE
    
    IllegalArgumentException - if miterlimit is less than 1 and join is JOIN_MITER
    
    IllegalArgumentException - if join is not either JOIN_ROUND, JOIN_BEVEL, or JOIN_MITER
  - BasicStroke
```
public BasicStroke(float width,
           int cap,
           int join)
```
    Constructs a solid BasicStroke with the specified attributes. The miterlimit parameter is unnecessary in cases where the default is allowable or the line joins are not specified as JOIN_MITER.
    
    Parameters:
    width - the width of the BasicStroke
    cap - the decoration of the ends of a BasicStroke
    join - the decoration applied where path segments meet
    
    Throws:
    
    IllegalArgumentException - if width is negative
    
    IllegalArgumentException - if cap is not either CAP_BUTT, CAP_ROUND or CAP_SQUARE
    
    IllegalArgumentException - if join is not either JOIN_ROUND, JOIN_BEVEL, or JOIN_MITER
  - BasicStroke
```
public BasicStroke(float width)
```
    Constructs a solid BasicStroke with the specified line width and with default values for the cap and join styles.
    
    Parameters:
    width - the width of the BasicStroke
    
    Throws:
    
    IllegalArgumentException - if width is negative
  - BasicStroke
```
public BasicStroke()
```
    Constructs a new BasicStroke with defaults for all attributes. The default attributes are a solid line of width 1.0, CAP_SQUARE, JOIN_MITER, a miter limit of 10.0.
- Method Detail
  - createStrokedShape
```
public Shape createStrokedShape(Shape s)
```
    Returns a Shape whose interior defines the stroked outline of a specified Shape.
    
    Specified by:
    
    createStrokedShape in interface Stroke
    
    Parameters:
    s - the Shape boundary be stroked
    
    Returns:
    the Shape of the stroked outline.
  - getLineWidth
```
public float getLineWidth()
```
    Returns the line width. Line width is represented in user space, which is the default-coordinate space used by Java 2D. See the Graphics2D class comments for more information on the user space coordinate system.
    
    Returns:
    the line width of this BasicStroke.
    See Also:
    Graphics2D
  - getEndCap
```
public int getEndCap()
```
    Returns the end cap style.
    
    Returns:
    the end cap style of this BasicStroke as one of the static int values that define possible end cap styles.
  - getLineJoin
```
public int getLineJoin()
```
    Returns the line join style.
    
    Returns:
    the line join style of the BasicStroke as one of the static int values that define possible line join styles.
  - getMiterLimit
```
public float getMiterLimit()
```
    Returns the limit of miter joins.
    
    Returns:
    the limit of miter joins of the BasicStroke.
  - getDashArray
```
public float[] getDashArray()
```
    Returns the array representing the lengths of the dash segments. Alternate entries in the array represent the user space lengths of the opaque and transparent segments of the dashes. As the pen moves along the outline of the Shape to be stroked, the user space distance that the pen travels is accumulated. The distance value is used to index into the dash array. The pen is opaque when its current cumulative distance maps to an even element of the dash array and transparent otherwise.
    
    Returns:
    the dash array.
  - getDashPhase
```
public float getDashPhase()
```
    Returns the current dash phase. The dash phase is a distance specified in user coordinates that represents an offset into the dashing pattern. In other words, the dash phase defines the point in the dashing pattern that will correspond to the beginning of the stroke.
    
    Returns:
    the dash phase as a float value.
  - hashCode
```
public int hashCode()
```
    Returns the hashcode for this stroke.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    a hash code for this stroke.
    See Also:
    Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)
  - equals
```
public boolean equals(Object obj)
```
    Tests if a specified object is equal to this BasicStroke by first testing if it is a BasicStroke and then comparing its width, join, cap, miter limit, dash, and dash phase attributes with those of this BasicStroke.
    
    Overrides:
    
    equals in class Object
    
    Parameters:
    obj - the specified object to compare to this BasicStroke
    
    Returns:
    true if the width, join, cap, miter limit, dash, and dash phase are the same for both objects; false otherwise.
    See Also:
    Object.hashCode(), HashMap

Traduction non disponible

Les API Java ne sont pas encore traduites en français sur l'infobrol. Seule la version anglaise est disponible pour l'instant.

Version en cache

19/12/2024 12:32:57 Cette version de la page est en cache (à la date du 19/12/2024 12:32:57) afin d'accélérer le traitement. Vous pouvez activer le mode utilisateur dans le menu en haut pour afficher la dernère version de la page.

Document créé le 29/08/2006, dernière modification le 04/03/2020
Source du document imprimé : https://www.gaudry.be/java-api-rf-java/awt/basicstroke.html

L'infobrol est un site personnel dont le contenu n'engage que moi. Le texte est mis à disposition sous licence CreativeCommons(BY-NC-SA). Plus d'info sur les conditions d'utilisation et sur l'auteur.

Références

Manuel PHP : https://docs.oracle.com, BasicStroke

Ces références et liens indiquent des documents consultés lors de la rédaction de cette page, ou qui peuvent apporter un complément d'information, mais les auteurs de ces sources ne peuvent être tenus responsables du contenu de cette page.
L'auteur de ce site est seul responsable de la manière dont sont présentés ici les différents concepts, et des libertés qui sont prises avec les ouvrages de référence. N'oubliez pas que vous devez croiser les informations de sources multiples afin de diminuer les risques d'erreurs.

Table des matières Haut

Class BasicStroke

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

JOIN_MITER

JOIN_ROUND

JOIN_BEVEL

CAP_BUTT

CAP_ROUND

CAP_SQUARE

Constructor Detail

BasicStroke

BasicStroke

BasicStroke

BasicStroke

BasicStroke

Method Detail

createStrokedShape

getLineWidth

getEndCap

getLineJoin

getMiterLimit

getDashArray

getDashPhase

hashCode

equals

Références