Abstract base class of path operators. More...
Public Member Functions | |
| PathOperator (int nid=-1) | |
| virtual void | dumpOut (FILE *f, int indent, SegmentControls *controls, int what, Laxkit::anObject *context)=0 |
| virtual void | dumpIn (Coordinate *attachto, LaxFiles::Attribute *att, Laxkit::anObject *context)=0 |
| virtual void | drawControls (Laxkit::Displayer *dp, int which, SegmentControls *controls, int showdecs, PathInterface *pathi)=0 |
| virtual anInterface * | getInterface (Laxkit::Displayer *dp, PathsData *data)=0 |
| Return an interface that can manipulate relevant data. | |
| virtual int | scan (Laxkit::Displayer *dp, SegmentControls *ctl, double x, double y)=0 |
| virtual Coordinate * | newPoint (flatpoint p)=0 |
| Return a new point and associated points. | |
| virtual int | ShiftPoint (Coordinate *pp, flatpoint d)=0 |
| virtual int | Rotate (flatpoint o, double angle, Coordinate *pp)=0 |
| virtual int | Scale (flatpoint o, double f, int contsrain, Coordinate *pp)=0 |
 Public Member Functions inherited from Laxkit::anObject | |
| anObject () | |
| Set object_id=getUniqueNumber(). | |
| virtual | ~anObject () |
| Empty virtual destructor. | |
| virtual const char * | whattype () |
| Returns the type of anObject. | |
| virtual anObject * | duplicate (anObject *ref=NULL) |
| virtual int | inc_count () |
| Increment the data's count by 1. Returns count. | |
| virtual int | dec_count () |
| Decrement the count of the data, deleting if count is less than or equal to 0. | |
| virtual int | the_count () |
Public Attributes | |
| int | id |
| Public Attributes inherited from Laxkit::anObject | |
| int | suppress_debug |
| DeleteRefCountedFunc | deleteMe |
| Called when the count is decremented to 0. | |
| unsigned long | object_id |
| char * | object_idstr |
Additional Inherited Members | |
| Protected Attributes inherited from Laxkit::anObject | |
| int | _count |
| The reference count of the object. | |
Detailed Description
Abstract base class of path operators.
PathOperator objects provide helper functions to operate on Path objects. They allow constructing and manipulating segments of paths that are not just plain bezier curves.
Path::basepathops is a publically accessible static stack of PathOperators that any Path object should be able to use. Thus, actual PathOperator instances must not actually contain any state specific to any one path or interface.
For a person to actually interacting with data, getInterface() will return an anInterface object that can be used for that purpose, if any is available.
Member Function Documentation
|
pure virtual |
Return an interface that can manipulate relevant data.
- Todo:
- *** describe requirements of any interface returned here!!
Referenced by LaxInterfaces::PathInterface::ChangeCurpathop().
|
pure virtual |
Return a new point and associated points.
- Parameters:
-
p Where a point was clicked.
Must return the most previous point in the newly added group of points. It must not return closed loops. Should return a segment that starts and ends with a vertex.
- Todo:
- *** also return which point should be currently selected!
Referenced by LaxInterfaces::PathInterface::AddPoint().
The documentation for this class was generated from the following files:
- pathinterface.h
- pathinterface.cc