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

static class

OBBViewportTransform.OBB

Field Summary

protected OBBViewportTransform.OBB

box

Constructor Summary

OBBViewportTransform()

Method Summary

Vec2	getCenter() center of the viewport.
Vec2	getExtents() This is the half-width and half-height.
void	getScreenToWorld(Vec2 argScreen, Vec2 argWorld) takes the screen coordinates (argScreen) and puts the corresponding world coordinates in argWorld.
void	getScreenVectorToWorld(Vec2 argScreen, Vec2 argWorld) 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 argWorld, Vec2 argScreen) takes the world coordinate (argWorld) puts the corresponding screen coordinate in argScreen.
void	getWorldVectorToScreen(Vec2 argWorld, Vec2 argScreen) Transforms the given directional vector by the viewport transform (not positional)
boolean	isYFlip()
void	mulByTransform(Mat22 argTransform) 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 argHalfWidth, float argHalfHeight) 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 Detail

box

protected final OBBViewportTransform.OBB box

Constructor Detail

OBBViewportTransform

public OBBViewportTransform()

Method Detail

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

See Also:

IViewportTransform.setCamera(float, float, float)

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

Returns:

See Also:

IViewportTransform.getExtents()

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

See Also:

IViewportTransform.setExtents(Vec2)

setExtents

public void setExtents(float argHalfWidth,
                       float argHalfHeight)

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

See Also:

IViewportTransform.setExtents(float, float)

getCenter

public Vec2 getCenter()

Description copied from interface: IViewportTransform

center of the viewport. Not a copy.

Specified by:

getCenter in interface IViewportTransform

Returns:

See Also:

IViewportTransform.getCenter()

setCenter

public void setCenter(Vec2 argPos)

Description copied from interface: IViewportTransform

sets the center of the viewport.

Specified by:

setCenter in interface IViewportTransform

See Also:

IViewportTransform.setCenter(Vec2)

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

See Also:

IViewportTransform.setCenter(float, float)

getTransform

public Mat22 getTransform()

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

Returns:

setTransform

public void setTransform(Mat22 transform)

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

Parameters:

transform -

mulByTransform

public void mulByTransform(Mat22 argTransform)

Multiplies the obb transform by the given transform

Parameters:

argTransform -

isYFlip

public boolean isYFlip()

Specified by:

isYFlip in interface IViewportTransform

Returns:

if the transform flips the y axis

See Also:

IViewportTransform.isYFlip()

setYFlip

public void setYFlip(boolean yFlip)

Specified by:

setYFlip in interface IViewportTransform

Parameters:

yFlip - if we flip the y axis when transforming

See Also:

IViewportTransform.setYFlip(boolean)

getScreenVectorToWorld

public void getScreenVectorToWorld(Vec2 argScreen,
                                   Vec2 argWorld)

Description copied from interface: IViewportTransform

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

Specified by:

getScreenVectorToWorld in interface IViewportTransform

See Also:

IViewportTransform.getScreenVectorToWorld(Vec2, Vec2)

getWorldVectorToScreen

public void getWorldVectorToScreen(Vec2 argWorld,
                                   Vec2 argScreen)

Description copied from interface: IViewportTransform

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

Specified by:

getWorldVectorToScreen in interface IViewportTransform

See Also:

IViewportTransform.getWorldVectorToScreen(Vec2, Vec2)

getWorldToScreen

public void getWorldToScreen(Vec2 argWorld,
                             Vec2 argScreen)

Description copied from interface: IViewportTransform

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

Specified by:

getWorldToScreen in interface IViewportTransform

getScreenToWorld

public void getScreenToWorld(Vec2 argScreen,
                             Vec2 argWorld)

Description copied from interface: IViewportTransform

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

Specified by:

getScreenToWorld in interface IViewportTransform

See Also:

IViewportTransform.getScreenToWorld(Vec2, Vec2)