Bitmap.Segment Struct Reference

List of all members.

---

Detailed Description

A polygon edge and scan state.

Public Member Functions
void	setup (float sx, float sy, float ex, float ey, inout float miny, inout float maxy)
	Store variables as appropriate.
float	evaly (float y)
	Evaluate the x coordinate at the given y point.
void	pointy (float y, inout float minx, inout float maxx)
	Setup parameters for a given vertical scanline.
Public Attributes
float	sx
	Starting horizontal coordinate of the segment.
float	sy
	Starting vertical coordinate of the segment (must be at most ey).
float	ex
	Ending horizontal coordinate of the segment.
float	ey
	Ending horizontal coordinate of the segment (must be at least sy).
bit	up
	Whether this is segment is up (true) or down (false).
float	px
	Starting point of this scan.

---

Member Function Documentation

float Bitmap.Segment.evaly (  float  y  )

Evaluate the x coordinate at the given y point. Out-of-range values are saturated.

void Bitmap.Segment.pointy (  float  y, inout float  minx, inout float  maxx )

Setup parameters for a given vertical scanline. minx is set to px if it is above it or if minx is float.nan. maxx is set to qx if it is above it or if maxx is float.nan.

void Bitmap.Segment.setup (  float  sx, float  sy, float  ex, float  ey, inout float  miny, inout float  maxy )

Store variables as appropriate. sy can be above ey; if it is, they're swapped and up is set to true. miny is set to sy if it is above it or if miny is float.nan. maxy is set to ey if it is below it or if maxy is float.nan.

---

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

• bitmap.d

---