1
#ifndef SEEN_SNAPPEDPOINT_H
2
#define SEEN_SNAPPEDPOINT_H
5
* \file src/snapped-point.h
6
* \brief SnappedPoint class.
9
* Mathieu Dimanche <mdimanche@free.fr>
10
* Diederik van Lierop <mail@diedenrezi.nl>
12
* Released under GNU GPL, read the file 'COPYING' for more information.
17
#include <libnr/nr-values.h> //Because of NR_HUGE
18
#include <2geom/geom.h>
24
SNAPTARGET_UNDEFINED = 0,
26
SNAPTARGET_GRID_INTERSECTION,
28
SNAPTARGET_GUIDE_INTERSECTION,
29
SNAPTARGET_GRID_GUIDE_INTERSECTION,
30
SNAPTARGET_NODE_SMOOTH,
32
SNAPTARGET_LINE_MIDPOINT,
33
SNAPTARGET_OBJECT_MIDPOINT,
34
SNAPTARGET_ROTATION_CENTER,
37
SNAPTARGET_PATH_INTERSECTION,
38
SNAPTARGET_BBOX_CORNER,
40
SNAPTARGET_BBOX_EDGE_MIDPOINT,
41
SNAPTARGET_BBOX_MIDPOINT,
42
SNAPTARGET_GRADIENTS_PARENT_BBOX,
43
SNAPTARGET_PAGE_BORDER,
44
SNAPTARGET_PAGE_CORNER,
45
SNAPTARGET_CONVEX_HULL_CORNER,
46
SNAPTARGET_ELLIPSE_QUADRANT_POINT,
47
SNAPTARGET_CENTER, // of ellipse
48
SNAPTARGET_CORNER, // of image or of rectangle
49
SNAPTARGET_TEXT_BASELINE
53
SNAPSOURCE_UNDEFINED = 0,
54
SNAPSOURCE_BBOX_CORNER,
55
SNAPSOURCE_BBOX_MIDPOINT,
56
SNAPSOURCE_BBOX_EDGE_MIDPOINT,
57
SNAPSOURCE_NODE_SMOOTH,
59
SNAPSOURCE_LINE_MIDPOINT,
60
SNAPSOURCE_OBJECT_MIDPOINT,
61
SNAPSOURCE_ROTATION_CENTER,
63
SNAPSOURCE_PATH_INTERSECTION,
65
SNAPSOURCE_GUIDE_ORIGIN,
66
SNAPSOURCE_CONVEX_HULL_CORNER,
67
SNAPSOURCE_ELLIPSE_QUADRANT_POINT,
68
SNAPSOURCE_CENTER, // of ellipse
69
SNAPSOURCE_CORNER, // of image or of rectangle
70
SNAPSOURCE_TEXT_BASELINE
74
/// Class describing the result of an attempt to snap.
80
SnappedPoint(Geom::Point const &p, SnapSourceType const &source, SnapTargetType const &target, Geom::Coord const &d, Geom::Coord const &t, bool const &a, bool const &at_intersection, bool const &fully_constrained, Geom::Coord const &d2, Geom::Coord const &t2, bool const &a2);
81
SnappedPoint(Geom::Point const &p, SnapSourceType const &source, SnapTargetType const &target, Geom::Coord const &d, Geom::Coord const &t, bool const &a, bool const &fully_constrained);
84
Geom::Coord getSnapDistance() const {return _distance;}
85
void setSnapDistance(Geom::Coord const d) {_distance = d;}
86
Geom::Coord getTolerance() const {return _tolerance;}
87
bool getAlwaysSnap() const {return _always_snap;}
88
Geom::Coord getSecondSnapDistance() const {return _second_distance;}
89
void setSecondSnapDistance(Geom::Coord const d) {_second_distance = d;}
90
Geom::Coord getSecondTolerance() const {return _second_tolerance;}
91
bool getSecondAlwaysSnap() const {return _second_always_snap;}
92
Geom::Coord getPointerDistance() const {return _pointer_distance;}
93
void setPointerDistance(Geom::Coord const d) {_pointer_distance = d;}
95
/* This is the preferred method to find out which point we have snapped
96
* to, because it only returns a point if snapping has actually occurred
99
void getPoint(Geom::Point &p) const;
101
/* This method however always returns a point, even if no snapping
102
* has occurred; A check should be implemented in the calling code
103
* to check for snapping. Use this method only when really needed, e.g.
104
* when the calling code is trying to snap multiple points and must
105
* determine itself which point is most appropriate
107
Geom::Point getPoint() const {return _point;}
109
bool getAtIntersection() const {return _at_intersection;}
110
bool getFullyConstrained() const {return _fully_constrained;}
111
bool getSnapped() const {return _distance < NR_HUGE;}
112
Geom::Point getTransformation() const {return _transformation;}
113
void setTransformation(Geom::Point const t) {_transformation = t;}
114
void setTarget(SnapTargetType const target) {_target = target;}
115
SnapTargetType getTarget() const {return _target;}
116
void setSource(SnapSourceType const source) {_source = source;}
117
SnapSourceType getSource() const {return _source;}
119
bool isOtherSnapBetter(SnappedPoint const &other_one, bool weighted) const;
121
/*void dump() const {
122
std::cout << "_point = " << _point << std::endl;
123
std::cout << "_source = " << _source << std::endl;
124
std::cout << "_target = " << _target << std::endl;
125
std::cout << "_at_intersection = " << _at_intersection << std::endl;
126
std::cout << "_fully_constrained = " << _fully_constrained << std::endl;
127
std::cout << "_distance = " << _distance << std::endl;
128
std::cout << "_tolerance = " << _tolerance << std::endl;
129
std::cout << "_always_snap = " << _always_snap << std::endl;
130
std::cout << "_second_distance = " << _second_distance << std::endl;
131
std::cout << "_second_tolerance = " << _second_tolerance << std::endl;
132
std::cout << "_second_always_snap = " << _second_always_snap << std::endl;
133
std::cout << "_transformation = " << _transformation << std::endl;
134
std::cout << "_pointer_distance = " << _pointer_distance << std::endl;
138
Geom::Point _point; // Location of the snapped point
139
SnapSourceType _source; // Describes what snapped
140
SnapTargetType _target; // Describes to what we've snapped to
141
bool _at_intersection; // If true, the snapped point is at an intersection
142
bool _fully_constrained; // When snapping for example to a node, then the snap will be "fully constrained".
143
// When snapping to a line however, the snap is only partly constrained (i.e. only in one dimension)
145
/* Distance from original point to snapped point. If the snapped point is at
146
an intersection of e.g. two lines, then this is the distance to the closest
148
Geom::Coord _distance;
149
/* The snapping tolerance in screen pixels (depends on zoom)*/
150
Geom::Coord _tolerance;
151
/* If true then "Always snap" is on */
154
/* If the snapped point is at an intersection of e.g. two lines, then this is
155
the distance to the fartest line */
156
Geom::Coord _second_distance;
157
/* The snapping tolerance in screen pixels (depends on zoom)*/
158
Geom::Coord _second_tolerance;
159
/* If true then "Always snap" is on */
160
bool _second_always_snap;
161
/* The transformation (translation, scale, skew, or stretch) from the original point to the snapped point */
162
Geom::Point _transformation;
163
/* Distance from the un-transformed point to the mouse pointer, measured at the point in time when dragging started */
164
Geom::Coord _pointer_distance;
167
}// end of namespace Inkscape
169
bool getClosestSP(std::list<Inkscape::SnappedPoint> &list, Inkscape::SnappedPoint &result);
171
#endif /* !SEEN_SNAPPEDPOINT_H */
176
c-file-style:"stroustrup"
177
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
182
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4 :