CPoint Class Reference

The point. More...

#include <Point.h>

Inheritance diagram for CPoint:

Public Member Functions
	CPoint (eSprite, const Vector2 &, float)
	Constructor. More...
void	move ()
	Change position depending on time and velocity. More...
void	draw (float)
	Draw. More...
void	DeliverImpulse (float, float)
	Deliver an impulse. More...
void	Adjust (const Vector2 &)
	Adjust position from Gauss-Seidel relaxation. More...
void	Teleport (const Vector2 &)
	Magically teleport point by this amount. More...
void	SetCollisionSound (eSound)
	Override default collision sound. More...
const Vector2 &	GetPos () const
	Get position. More...
float	GetRadius () const
	Get radius. More...

Private Member Functions
float	EdgeCollision ()
	Collision detection and response for edges of screen. More...

Private Attributes
eSprite	m_eSpriteType = eSprite::Size
	Sprite type.
Vector2	m_vPos
	Current position.
Vector2	m_vOldPos
	Previous position, needed for Verlet.
float	m_fRadius = 0
	Radius of bounding circle.
float	m_fAngle = 0
	Orientation angle.
float	m_fXScale = 1
	Scale along x-axis.
float	m_fYScale = 1
	Scale along y-axis.
eSound	m_eCollisionSnd = eSound::Size
	Collision sound.

Additional Inherited Members
Static Protected Attributes inherited from CCommon
static CRenderer *	m_pRenderer = nullptr
	Pointer to the renderer.
static CObjectManager *	m_pObjectManager = nullptr
	Pointer to the object manager.
static eBody	m_eCurrentBody = (eBody)0
	Current body type.

Detailed Description

The point class is the representation of an abstract point moving through space using Verlet Integration.

Constructor & Destructor Documentation

CPoint()

CPoint::CPoint	(	eSprite	t,
		const Vector2 &	p,
		float	r
	)

Parameters

t	Sprite type.
p	Initial position.
r	Radius.

Member Function Documentation

Adjust()

void CPoint::Adjust

(

const Vector2 &

v

)

All a point needs to do for Gauss-Seidel relaxation is to move when the spring tells it to.

DeliverImpulse()

void CPoint::DeliverImpulse	(	float	a,
		float	m
	)

Since we are using Verlet integration, an impulse is easily faked by moving the old position a distance proportional to the magnitude of the impulse in the direction of the vector's orientatio.

Parameters

a	Angle.
m	Magnitude.

draw()

void CPoint::draw

(

float

a

)

Parameters

a	Orientation.

EdgeCollision()

float CPoint::EdgeCollision ( )

private

Checks for a collision, and does the necessary calculations for reflecting a point if it hits an edge.

Returns

Collision speed, zero if no collision.

GetPos()

const Vector2 & CPoint::GetPos

(

)

const

Reader function for position.

Returns

Position.

GetRadius()

float CPoint::GetRadius

(

)

const

Reader function for radius.

Returns

Radius.

move()

void CPoint::move

(

)

Move the point using Verlet integration, perform collision detection and response with edges of window. Notice that there is no concept of time here.

SetCollisionSound()

void CPoint::SetCollisionSound

(

eSound

s

)

Parameters

s	New collision sound.

Teleport()

void CPoint::Teleport

(

const Vector2 &

d

)

Teleport the point without changing its velocity. Well, actually points don't have a velocity under Verlet Integration, but you know what I mean. Just displace both the position and old position.

Parameters

d	Displacement.