Jcg.viewer

Class Draw2D

java.lang.Object

Jcg.viewer.Draw2D

Direct Known Subclasses:

Draw

public abstract class Draw2D
extends java.lang.Object

Abstract class defining methods for drawing points and segments in a 2D frame

Author:

Luca Castelli Aleardi (Ecole Polytechnique, INF555 and INF562), 2012

Field Summary

Fields

Modifier and Type	Field and Description
static int	NO_VERTICES_NO_EDGES
static int	ONLY_EDGES
static int	VERTICES_AND_EDGES

Constructor Summary

Constructors

Constructor and Description
Draw2D()

Method Summary

Modifier and Type	Method and Description
Point_2[]	computeBoundingBox() Compute the scale factor (depending on the max distance of the point set)
abstract void	draw(int type) Draw the entire graph (or mesh)
void	drawAxis() Draw the cartesian axis X and Y
void	drawBoundingBox(Point_2[] box) Draw a bounding box (a rectangle)
abstract void	drawPoint(Point_2 p) Draw a vertex
abstract void	drawSegment(Point_2 p, Point_2 q) Draw a segment between two points
abstract void	resize(Point_2 leftBottom, Point_2 rightTop) Resize the frame according to the window coordinates Input points are the left bottom and right top points of the window
static double	round(double x, int precision) Return the value after truncation

Methods inherited from class java.lang.Object

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

Field Detail

VERTICES_AND_EDGES

public static final int VERTICES_AND_EDGES

See Also:

Constant Field Values

NO_VERTICES_NO_EDGES

public static final int NO_VERTICES_NO_EDGES

See Also:

Constant Field Values

ONLY_EDGES

public static final int ONLY_EDGES

See Also:

Constant Field Values

Constructor Detail

Draw2D

public Draw2D()

Method Detail

drawSegment

public abstract void drawSegment(Point_2 p,
                                 Point_2 q)

Draw a segment between two points

drawPoint

public abstract void drawPoint(Point_2 p)

Draw a vertex

draw

public abstract void draw(int type)

Draw the entire graph (or mesh)

Parameters:

type - indicates the rendering mode

drawAxis

public void drawAxis()

Draw the cartesian axis X and Y

resize

public abstract void resize(Point_2 leftBottom,
                            Point_2 rightTop)

Resize the frame according to the window coordinates Input points are the left bottom and right top points of the window

drawBoundingBox

public void drawBoundingBox(Point_2[] box)

Draw a bounding box (a rectangle)

round

public static double round(double x,
                           int precision)

Return the value after truncation

computeBoundingBox

public Point_2[] computeBoundingBox()

Compute the scale factor (depending on the max distance of the point set)