path-description.h File Reference

TODO: insert short description here. More...

Go to the source code of this file.

Classes
struct	PathDescr
	A base class for Livarot's path commands. More...
struct	PathDescrMoveTo
	A MoveTo path command. More...
struct	PathDescrLineTo
	A LineTo path command. More...
struct	PathDescrCubicTo
	Cubic Bezier path command. More...
struct	PathDescrArcTo
	Elliptical Arc path command. More...
struct	PathDescrForced
	A forced point path command. More...
struct	PathDescrClose
	Close Path instruction. More...

Enumerations
enum	{   descr_moveto = 0 , descr_lineto = 1 , descr_cubicto = 2 , descr_arcto = 4 ,   descr_close = 5 , descr_forced = 7 , descr_type_mask = 15 }
	An enum to store the path command type. More...

Detailed Description

TODO: insert short description here.

Definition in file path-description.h.

Enumeration Type Documentation

anonymous enum

anonymous enum

An enum to store the path command type.

A number is assigned to each type and the PathDescr class stores a flag variable that stores the number to know which type it is.

Enumerator
descr_moveto	A MoveTo path command
descr_lineto	A LineTo path command
descr_cubicto	A CubicTo path command. Basically a cubic Bezier
descr_arcto	An elliptical arc
descr_close	A close path command
descr_forced	Not exactly sure what a forced point means. As far as I have seen in the simplify code, a forced point is preferred to be kept. The simplification algorithm would make sure the forced point makes its way to the final result. However, as far as I can see, forced point stuff is not used in Inkscape. TODO: Explore how forced points might be being used when Simplify is done after Boolean Ops
descr_type_mask	As mentioned above, the flag variable of PathDescr stores the type of the command using this enum. The higher bits (after the first four (bit 0 to bit 3) could be used for other flag stuff, so this descr_type_mask can be used to just extract the type. 15 in HEX is 0xF and in BIN is 0000 1111 so ANDing with it will zero any higher bits just leaving you with the type.

Definition at line 25 of file path-description.h.