Naming Conventions – Graphics32

The TBitmap32 class provides a large number of methods for single pixel access and single pixel width line drawing. While the prefix of these methods indicate what they do (draw a line, access a pixel, etc.), the postfix denotes how they behave. The methods can include one or more of the following postfixes:

Postfix	Name	Description	Examples
(none)		Methods without modifiers offer maximum performance. Lines and pixels are rendered without anti-aliasing and without color blending. No clipping is performed so coordinates are expected to be within bitmap boundaries. Out of bounds coordinates can cause access violations and memory overwrites.	Line HorzLine Pixel FillRect
S	Safe	Clipping is performed when coordinates extend beyond bitmap boundaries. This modifier can be combined with any one of the anti-aliasing or transparent modifiers below (T, A, X or F) and also with the stippling (P) modifier.	LineS LineToS PixelS
T	Transparent	Semi-transparent pixels are merged onto the background image (though still without anti-aliasing).	LineTS LineToTS FillRectTS
A	Anti-aliased	Uses a modified version of Bresenham’s algorithm known as Wu’s antialiasing.	LineA LineAS
X	Fixed	Coordinates are in fixed point (`TFixed`) format. These methods also employ a more sophisticated anti-aliasing algorithm than that used in the ‘A’ methods above.	LineX LineXS PixelXS
F	Float	Coordinates are in floating point (`TFloat`) format. These methods employ the same anti-aliasing algorithm used in the ‘X’ methods.	LineFS PixelFS
P	Stippling	Lines are drawn using a stippling pattern. This modifier must be combined with either the ‘X’ or ‘F’ modifiers above.	LineFSP LineXSP
		For lines, all the methods listed above draw line segments that are a single pixel wide. To draw thicker lines, see the Polyline and PolyPolyline functions in the GR32_Polygons unit. Those functions also produce better anti-aliased blending over fully transparent backgrounds (when compared with X & F modified methods above).