TRSGPPixelOffsetMode Enumeration

Delphi

type
  TRSGPPixelOffsetMode = (
  pomInvalid = -1,
  pomDefault = 0,
  pomHighSpeed,
  pomHighQuality,
  pomNone,
  pomHalf
  );

	Name	Description
	pomDefault	Equivalent to pomNone.
	pomHalf	Indicates that pixel centers have coordinates that are half way between integer values.
	pomHighQuality	Equivalent to pomHalf.
	pomHighSpeed	Equivalent to pomNone.
	pomInvalid	Used internally to GDI+.
	pomNone	Indicates that pixel centers have integer coordinates.

Top

Consider the pixel in the upper-left corner of an image with address (0, 0). With pomNone, the pixel covers the area between –0.5 and 0.5 in both the x and y directions; that is, the pixel center is at (0, 0). With pomHalf, the pixel covers the area between 0 and 1 in both the x and y directions; that is, the pixel center is at (0.5, 0.5).

Reference

•RSGdiPlusGraphicsTypes