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#ifndef SEEN_SNAPPEDPOINT_H
#define SEEN_SNAPPEDPOINT_H
/**
* \file src/snapped-point.h
* \brief SnappedPoint class.
*
* Authors:
* Mathieu Dimanche <mdimanche@free.fr>
* Diederik van Lierop <mail@diedenrezi.nl>
*
* Released under GNU GPL, read the file 'COPYING' for more information.
*/
#include <vector>
#include <list>
#include "libnr/nr-coord.h"
#include "libnr/nr-point.h"
#include <libnr/nr-values.h>
namespace Inkscape
{
enum SnapTargetType {
SNAPTARGET_UNDEFINED,
SNAPTARGET_GRID,
SNAPTARGET_GRID_INTERSECTION,
SNAPTARGET_GUIDE,
SNAPTARGET_GUIDE_INTERSECTION,
SNAPTARGET_GRID_GUIDE_INTERSECTION,
SNAPTARGET_NODE,
SNAPTARGET_PATH,
SNAPTARGET_PATH_INTERSECTION,
SNAPTARGET_BBOX_CORNER,
SNAPTARGET_BBOX_EDGE,
SNAPTARGET_GRADIENT
};
/// Class describing the result of an attempt to snap.
class SnappedPoint
{
public:
SnappedPoint();
SnappedPoint(NR::Point const &p, SnapTargetType const &target, NR::Coord const &d, NR::Coord const &t, bool const &a, bool const &at_intersection, NR::Coord const &d2, NR::Coord const &t2, bool const &a2);
SnappedPoint(NR::Point const &p, SnapTargetType const &target, NR::Coord const &d, NR::Coord const &t, bool const &a);
~SnappedPoint();
NR::Coord getDistance() const;
void setDistance(NR::Coord const d) {_distance = d;}
NR::Coord getTolerance() const;
bool getAlwaysSnap() const;
NR::Coord getSecondDistance() const;
NR::Coord getSecondTolerance() const;
bool getSecondAlwaysSnap() const;
/* This is the preferred method to find out which point we have snapped,
* to because it only returns a point if snapping has actually occured
* (by overwriting p)
*/
void getPoint(NR::Point &p) const;
/* This method however always returns a point, even if no snapping
* has occured; A check should be implemented in the calling code
* to check for snapping. Use this method only when really needed, e.g.
* when the calling code is trying to snap multiple points and must
* determine itself which point is most appropriate
*/
NR::Point getPoint() const {return _point;}
bool getAtIntersection() const {return _at_intersection;}
bool getSnapped() const {return _distance < NR_HUGE;}
NR::Point getTransformation() const {return _transformation;}
void setTransformation(NR::Point const t) {_transformation = t;}
void setTarget(SnapTargetType const target) {_target = target;}
SnapTargetType getTarget() {return _target;}
protected:
NR::Point _point; // Location of the snapped point
SnapTargetType _target; // Describes to what we've snapped to
bool _at_intersection; // If true, the snapped point is at an intersection
/* Distance from original point to snapped point. If the snapped point is at
an intersection of e.g. two lines, then this is the distance to the closest
line */
NR::Coord _distance;
/* The snapping tolerance in screen pixels (depends on zoom)*/
NR::Coord _tolerance;
/* If true then "Always snap" is on */
bool _always_snap;
/* If the snapped point is at an intersection of e.g. two lines, then this is
the distance to the fartest line */
NR::Coord _second_distance;
/* The snapping tolerance in screen pixels (depends on zoom)*/
NR::Coord _second_tolerance;
/* If true then "Always snap" is on */
bool _second_always_snap;
/* The transformation (translation, scale, skew, or stretch) from the original point to the snapped point */
NR::Point _transformation;
};
}
bool getClosestSP(std::list<Inkscape::SnappedPoint> &list, Inkscape::SnappedPoint &result);
#endif /* !SEEN_SNAPPEDPOINT_H */
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :
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