b2Sweep Struct Reference

#include <b2Math.h>

List of all members.

Public Member Functions
void	Advance (float32 alpha)
void	GetTransform (b2Transform *xfb, float32 beta) const
void	Normalize ()
	Normalize the angles.
Public Attributes
float32	a
	world angles
float32	a0
float32	alpha0
b2Vec2	c
	center world positions
b2Vec2	c0
b2Vec2	localCenter
	local center of mass position

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Detailed Description

This describes the motion of a body/shape for TOI computation. Shapes are defined with respect to the body origin, which may no coincide with the center of mass. However, to support dynamics we must interpolate the center of mass position.

Definition at line 380 of file b2Math.h.

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Member Function Documentation

void b2Sweep::Advance

(

float32

alpha

)

[inline]

Advance the sweep forward, yielding a new initial state.

Parameters:

alpha

the new initial time.

Definition at line 702 of file b2Math.h.

void b2Sweep::GetTransform	(	b2Transform *	xfb,
		float32	beta
	)		const [inline]

Get the interpolated transform at a specific time.

Parameters:

beta	is a factor in [0,1], where 0 indicates alpha0.

Definition at line 692 of file b2Math.h.

void b2Sweep::Normalize

(

)

[inline]

Normalize the angles.

Normalize an angle in radians to be between -pi and pi.

Definition at line 712 of file b2Math.h.

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Member Data Documentation

float32 b2Sweep::a

world angles

Definition at line 395 of file b2Math.h.

float32 b2Sweep::a0

Definition at line 395 of file b2Math.h.

float32 b2Sweep::alpha0

Fraction of the current time step in the range [0,1] c0 and a0 are the positions at alpha0.

Definition at line 399 of file b2Math.h.

b2Vec2 b2Sweep::c

center world positions

Definition at line 394 of file b2Math.h.

b2Vec2 b2Sweep::c0

Definition at line 394 of file b2Math.h.

b2Vec2 b2Sweep::localCenter

local center of mass position

Definition at line 393 of file b2Math.h.

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

• b2Math.h