Class DebugDraw

java.lang.Object

org.jbox2d.callbacks.DebugDraw

Direct Known Subclasses:

DebugDrawJ2D

public abstract class DebugDraw
extends java.lang.Object

Implement this abstract class to allow JBox2d to automatically draw your physics for debugging purposes. Not intended to replace your own custom rendering routines!

Field Summary

Fields

Modifier and Type	Field	Description
static final int	e_aabbBit	< draw joint connections
static final int	e_centerOfMassBit	< draw axis aligned bounding boxes
static final int	e_dynamicTreeBit	< draw center of mass frame
static final int	e_jointBit	< draw shapes
static final int	e_pairBit	< draw core (TOI) shapes
static final int	e_shapeBit
protected int	m_drawFlags	< draw dynamic tree.
protected final IViewportTransform	viewportTransform

Constructor Summary

Constructors

Constructor	Description
DebugDraw(IViewportTransform viewport)

Method Summary

Modifier and Type	Method	Description
void	appendFlags(int flags)
void	clearFlags(int flags)
abstract void	drawCircle(Vec2 center, float radius, Color3f color)	Draw a circle.
abstract void	drawPoint(Vec2 argPoint, float argRadiusOnScreen, Color3f argColor)
void	drawPolygon(Vec2[] vertices, int vertexCount, Color3f color)	Draw a closed polygon provided in CCW order.
abstract void	drawSegment(Vec2 p1, Vec2 p2, Color3f color)	Draw a line segment.
abstract void	drawSolidCircle(Vec2 center, float radius, Vec2 axis, Color3f color)	Draw a solid circle.
abstract void	drawSolidPolygon(Vec2[] vertices, int vertexCount, Color3f color)	Draw a solid closed polygon provided in CCW order.
abstract void	drawString(float x, float y, java.lang.String s, Color3f color)	Draw a string.
void	drawString(Vec2 pos, java.lang.String s, Color3f color)
abstract void	drawTransform(Transform xf)	Draw a transform.
int	getFlags()
Vec2	getScreenToWorld(float screenX, float screenY)	takes the screen coordinates and returns the world coordinates.
Vec2	getScreenToWorld(Vec2 argScreen)	takes the screen coordinates (argScreen) and returns the world coordinates
void	getScreenToWorldToOut(float screenX, float screenY, Vec2 argWorld)	takes the screen coordinates and puts the corresponding world coordinates in argWorld.
void	getScreenToWorldToOut(Vec2 argScreen, Vec2 argWorld)
IViewportTransform	getViewportTranform()
Vec2	getWorldToScreen(float worldX, float worldY)	Takes the world coordinates and returns the screen coordinates.
Vec2	getWorldToScreen(Vec2 argWorld)	takes the world coordinate (argWorld) and returns the screen coordinates.
void	getWorldToScreenToOut(float worldX, float worldY, Vec2 argScreen)	Takes the world coordinates and puts the corresponding screen coordinates in argScreen.
void	getWorldToScreenToOut(Vec2 argWorld, Vec2 argScreen)
void	setCamera(float x, float y, float scale)
void	setFlags(int flags)

Methods inherited from class java.lang.Object

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

Field Details

e_shapeBit

public static final int e_shapeBit

See Also:

• Constant Field Values

e_jointBit

public static final int e_jointBit

< draw shapes

See Also:

• Constant Field Values

e_aabbBit

public static final int e_aabbBit

< draw joint connections

See Also:

• Constant Field Values

e_pairBit

public static final int e_pairBit

< draw core (TOI) shapes

See Also:

• Constant Field Values

e_centerOfMassBit

public static final int e_centerOfMassBit

< draw axis aligned bounding boxes

See Also:

• Constant Field Values

e_dynamicTreeBit

public static final int e_dynamicTreeBit

< draw center of mass frame

See Also:

• Constant Field Values

m_drawFlags

protected int m_drawFlags

< draw dynamic tree.

viewportTransform

protected final IViewportTransform viewportTransform

Constructor Details

DebugDraw

public DebugDraw(IViewportTransform viewport)

Method Details

setFlags

public void setFlags(int flags)

getFlags

public int getFlags()

appendFlags

public void appendFlags(int flags)

clearFlags

public void clearFlags(int flags)

drawPolygon

public void drawPolygon(Vec2[] vertices,
 int vertexCount,
 Color3f color)

Draw a closed polygon provided in CCW order. This implementation uses drawSegment(Vec2, Vec2, Color3f) to draw each side of the polygon.

Parameters:

vertices -

vertexCount -

color -

drawPoint

public abstract void drawPoint(Vec2 argPoint,
 float argRadiusOnScreen,
 Color3f argColor)

drawSolidPolygon

public abstract void drawSolidPolygon(Vec2[] vertices,
 int vertexCount,
 Color3f color)

Draw a solid closed polygon provided in CCW order.

Parameters:

vertices -

vertexCount -

color -

drawCircle

public abstract void drawCircle(Vec2 center,
 float radius,
 Color3f color)

Draw a circle.

Parameters:

center -

radius -

color -

drawSolidCircle

public abstract void drawSolidCircle(Vec2 center,
 float radius,
 Vec2 axis,
 Color3f color)

Draw a solid circle.

Parameters:

center -

radius -

axis -

color -

drawSegment

public abstract void drawSegment(Vec2 p1,
 Vec2 p2,
 Color3f color)

Draw a line segment.

Parameters:

p1 -

p2 -

color -

drawTransform

public abstract void drawTransform(Transform xf)

Draw a transform. Choose your own length scale

Parameters:

xf -

drawString

public abstract void drawString(float x,
 float y,
 java.lang.String s,
 Color3f color)

Draw a string.

Parameters:

x -

y -

s -

color -

drawString

public void drawString(Vec2 pos,
 java.lang.String s,
 Color3f color)

getViewportTranform

public IViewportTransform getViewportTranform()

setCamera

public void setCamera(float x,
 float y,
 float scale)

Parameters:

x -

y -

scale -

See Also:

• IViewportTransform.setCamera(float, float, float)

getScreenToWorldToOut

public void getScreenToWorldToOut(Vec2 argScreen,
 Vec2 argWorld)

Parameters:

argScreen -

argWorld -

See Also:

• IViewportTransform.getScreenToWorld(org.jbox2d.common.Vec2, org.jbox2d.common.Vec2)

getWorldToScreenToOut

public void getWorldToScreenToOut(Vec2 argWorld,
 Vec2 argScreen)

Parameters:

argWorld -

argScreen -

See Also:

• IViewportTransform.getWorldToScreen(org.jbox2d.common.Vec2, org.jbox2d.common.Vec2)

getWorldToScreenToOut

public void getWorldToScreenToOut(float worldX,
 float worldY,
 Vec2 argScreen)

Takes the world coordinates and puts the corresponding screen coordinates in argScreen.

Parameters:

worldX -

worldY -

argScreen -

getWorldToScreen

public Vec2 getWorldToScreen(Vec2 argWorld)

takes the world coordinate (argWorld) and returns the screen coordinates.

Parameters:

argWorld -

getWorldToScreen

public Vec2 getWorldToScreen(float worldX,
 float worldY)

Takes the world coordinates and returns the screen coordinates.

Parameters:

worldX -

worldY -

getScreenToWorldToOut

public void getScreenToWorldToOut(float screenX,
 float screenY,
 Vec2 argWorld)

takes the screen coordinates and puts the corresponding world coordinates in argWorld.

Parameters:

screenX -

screenY -

argWorld -

getScreenToWorld

public Vec2 getScreenToWorld(Vec2 argScreen)

takes the screen coordinates (argScreen) and returns the world coordinates

Parameters:

argScreen -

getScreenToWorld

public Vec2 getScreenToWorld(float screenX,
 float screenY)

takes the screen coordinates and returns the world coordinates.

Parameters:

screenX -

screenY -