ChipmunkMultiGrab Class Reference

Simple class to implement multitouch grabbing of physics objects. More...

#import <ChipmunkMultiGrab.h>

List of all members.

Public Member Functions
(id)	- initForSpace:withSmoothing:withGrabForce:
	space is the space to grab shapes in.
(BOOL)	- beginLocation:
	Start tracking a new grab point.
(void)	- updateLocation:
	Update a grab point.
(void)	- endLocation:
	End a grab point.
Protected Attributes
ChipmunkSpace *	_space
NSMutableArray *	_grabs
cpFloat	_smoothing
cpFloat	_force
cpLayers	_layers
cpGroup	_group
Properties
cpLayers	layers
	Layers used for the point query when grabbing objects.
cpGroup	group
	Group used for the point query when grabbing objects.

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Detailed Description

Simple class to implement multitouch grabbing of physics objects.

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Member Function Documentation

- (id) initForSpace:		(ChipmunkSpace *)	space
withSmoothing:		(cpFloat)	smoothing
withGrabForce:		(cpFloat)	force

space is the space to grab shapes in.

smoothing is the amount of mouse smoothing to apply as percentage of remaining error per second. cpfpow(0.8, 60) is a good starting point that provides fast response, but smooth mouse updates. force is the force the grab points can apply.

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The documentation for this class was generated from the following file:

• ChipmunkMultiGrab.h