hgeEntityEx Class Reference

Polygon Entity Class with rotation & scaling. More...

#include <hgeEntity.h>

Inheritance diagram for hgeEntityEx:

List of all members.

Public Member Functions
hgeVector	GetRotatedPosition (hgeVector pos, float r)
hgeVector	GetPosition ()
void	SetPosition (hgeVector pos)
void	SetHotSpot (hgeVector m_hotspot)
void	Shift (hgeVector amount)
	hgeEntityEx (int m_Layer, bool m_Static)
void	Rotate (float m_angle)
void	SetRotation (float m_angle)
float	GetRotation ()

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Detailed Description

hgeEntityEx derives from hgeEntity, providing rotation & scaling functionality to polygon entitys.
A special TestEx routine is available in hgePolygonMap for testing EntityEx objects with an offset rotation - useful for getting the correct collision response on your rotating polygons.

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Member Function Documentation

hgeVector hgeEntityEx::GetPosition

(

)

[inline]

Fetches the position of a polygon. Usually the top left coordinate of its AABB.

Remarks:

If a hotspot was set, returns the location of the hotspot in world coordinates.

See also:

SetPosition() | SetHotSpot()

Reimplemented from hgePolygon.

hgeVector hgeEntityEx::GetRotatedPosition	(	hgeVector	pos,
		float	r
	)			[inline]

Returns:

The rotated position of a given vector in world space, around this polygon at angle shift of r. Used by collision routines.

void hgeEntityEx::SetHotSpot

(

hgeVector

m_hotspot

)

[inline]

Sets hot spot for transform operations.

Parameters:

m_hotspot

Vector describing the offset from the top left hand corner of the AABB

The hot spot is used by translation routines in the polygon, such as SetPosition().
It works in the same way a hotspot does in a hgeSprite - it is an offset from the top left hand corner of the shape.

Reimplemented from hgePolygon.

void hgeEntityEx::SetPosition

(

hgeVector

pos

)

[inline]

Sets the position of a polygon. Usually the top left coordinate of its AABB.

Remarks:

If a hotspot was set, the position is offset to match.

See also:

GetPosition() | SetHotSpot()

Reimplemented from hgePolygon.

void hgeEntityEx::Shift

(

hgeVector

amount

)

[inline]

Moves polygon from its current position by a certain amount.

Remarks:

Shifts all of the polygons attributes, including vertices, triangles, quads, triangles & aabb.

See also:

SetPosition

Reimplemented from hgePolygon.