Package org.jbox2d.common

Class OBBViewportTransform

java.lang.Object

org.jbox2d.common.OBBViewportTransform

All Implemented Interfaces:

IViewportTransform

public class OBBViewportTransform
extends Object
implements IViewportTransform

Orientated bounding box viewport transform

Author:

Daniel Murphy

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	OBBViewportTransform.OBB

Field Summary

Fields

Modifier and Type	Field	Description
protected final OBBViewportTransform.OBB	box

Constructor Summary

Constructors

Constructor	Description
OBBViewportTransform()

Method Summary

Modifier and Type	Method	Description
Vec2	getCenter()	center of the viewport.
Vec2	getExtents()	This is the half-width and half-height.
Mat22	getMat22Representation()
void	getScreenToWorld(Vec2 screen, Vec2 world)	takes the screen coordinates (screen) and puts the corresponding world coordinates in world.
void	getScreenVectorToWorld(Vec2 screen, Vec2 world)	Transforms the given directional screen vector back to the world direction.
Mat22	getTransform()	Gets the transform of the viewport, transforms around the center.
void	getWorldToScreen(Vec2 world, Vec2 screen)	takes the world coordinate (world) puts the corresponding screen coordinate in screen.
void	getWorldVectorToScreen(Vec2 world, Vec2 screen)	Transforms the given directional vector by the viewport transform (not positional)
boolean	isYFlip()
void	mulByTransform(Mat22 transform)	Multiplies the obb transform by the given transform
void	set(OBBViewportTransform vpt)
void	setCamera(float x, float y, float scale)	Sets the transform's center to the given x and y coordinates, and using the given scale.
void	setCenter(float x, float y)	sets the center of the viewport.
void	setCenter(Vec2 argPos)	sets the center of the viewport.
void	setExtents(float halfWidth, float halfHeight)	This sets the half-width and half-height of the viewport.
void	setExtents(Vec2 argExtents)	This sets the half-width and half-height.
void	setTransform(Mat22 transform)	Sets the transform of the viewport.
void	setYFlip(boolean yFlip)

Methods inherited from class java.lang.Object

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

Field Details

box

protected final OBBViewportTransform.OBB box

Constructor Details

OBBViewportTransform

public OBBViewportTransform()

Method Details

set

public void set(OBBViewportTransform vpt)

setCamera

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

Description copied from interface: IViewportTransform

Sets the transform's center to the given x and y coordinates, and using the given scale.

Specified by:

setCamera in interface IViewportTransform

getExtents

public Vec2 getExtents()

Description copied from interface: IViewportTransform

This is the half-width and half-height. This should be the actual half-width and half-height, not anything transformed or scaled. Not a copy.

Specified by:

getExtents in interface IViewportTransform

getMat22Representation

public Mat22 getMat22Representation()

Specified by:

getMat22Representation in interface IViewportTransform

setExtents

public void setExtents(Vec2 argExtents)

Description copied from interface: IViewportTransform

This sets the half-width and half-height. This should be the actual half-width and half-height, not anything transformed or scaled.

Specified by:

setExtents in interface IViewportTransform

setExtents

public void setExtents(float halfWidth,
 float halfHeight)

Description copied from interface: IViewportTransform

This sets the half-width and half-height of the viewport. This should be the actual half-width and half-height, not anything transformed or scaled.

Specified by:

setExtents in interface IViewportTransform

getCenter

public Vec2 getCenter()

Description copied from interface: IViewportTransform

center of the viewport. Not a copy.

Specified by:

getCenter in interface IViewportTransform

setCenter

public void setCenter(Vec2 argPos)

Description copied from interface: IViewportTransform

sets the center of the viewport.

Specified by:

setCenter in interface IViewportTransform

setCenter

public void setCenter(float x,
 float y)

Description copied from interface: IViewportTransform

sets the center of the viewport.

Specified by:

setCenter in interface IViewportTransform

getTransform

public Mat22 getTransform()

Gets the transform of the viewport, transforms around the center. Not a copy.

setTransform

public void setTransform(Mat22 transform)

Sets the transform of the viewport. Transforms about the center.

mulByTransform

public void mulByTransform(Mat22 transform)

Multiplies the obb transform by the given transform

Specified by:

mulByTransform in interface IViewportTransform

isYFlip

public boolean isYFlip()

Specified by:

isYFlip in interface IViewportTransform

Returns:

If the transform flips the y-axis.

setYFlip

public void setYFlip(boolean yFlip)

Specified by:

setYFlip in interface IViewportTransform

Parameters:

yFlip - If we flip the y-axis when transforming.

getScreenVectorToWorld

public void getScreenVectorToWorld(Vec2 screen,
 Vec2 world)

Description copied from interface: IViewportTransform

Transforms the given directional screen vector back to the world direction.

Specified by:

getScreenVectorToWorld in interface IViewportTransform

getWorldVectorToScreen

public void getWorldVectorToScreen(Vec2 world,
 Vec2 screen)

Description copied from interface: IViewportTransform

Transforms the given directional vector by the viewport transform (not positional)

Specified by:

getWorldVectorToScreen in interface IViewportTransform

getWorldToScreen

public void getWorldToScreen(Vec2 world,
 Vec2 screen)

Description copied from interface: IViewportTransform

takes the world coordinate (world) puts the corresponding screen coordinate in screen. It should be safe to give the same object as both parameters.

Specified by:

getWorldToScreen in interface IViewportTransform

getScreenToWorld

public void getScreenToWorld(Vec2 screen,
 Vec2 world)

Description copied from interface: IViewportTransform

takes the screen coordinates (screen) and puts the corresponding world coordinates in world. It should be safe to give the same object as both parameters.

Specified by:

getScreenToWorld in interface IViewportTransform