struct Geo::RastFragment

stores a fragment of a triangle i.e. a triangle clipped to a pixel box

Name	Description
Geo::u32 m_NumPts	number of points in fragment polygon
const RastVert * m_Points	fragment polygon points; coordinates are in [0,1]x[0,1] i.e.
const RastTri * m_Tri	reference to triangle that owns this fragment
Geo::s32 m_X	integer coordinates of (top-left of) pixel
Geo::s32 m_Y	integer coordinates of (top-left of) pixel

Name	Description
GetArea()	get signed area of fragment polygon; it's flipped if area < 0
GetBarycentricCoords(float, float, float &, float &)	get barycentric coordinates of a point in the pixel
GetCentroid(RastVert &)	get centroid of fragment polygon (average of vertex positions)
IsPtInPoly(float, float)	is a given point in the fragment polygon?

float Geo::RastFragment::GetArea

public: float GetArea() const

get signed area of fragment polygon; it's flipped if area < 0

public: void GetBarycentricCoords
(
float x,
float y,
float & u,
float & v
) const

get barycentric coordinates of a point in the pixel

public: void GetCentroid
(
RastVert & out
) const

get centroid of fragment polygon (average of vertex positions)

public: bool IsPtInPoly
(
float x,
float y
) const

is a given point in the fragment polygon?