QGIS API Documentation 3.27.0-Master (1c05421486)
qgstolerance.h
Go to the documentation of this file.
1/***************************************************************************
2 qgstolerance.h - wrapper for tolerance handling
3 ----------------------
4 begin : March 2009
5 copyright : (C) 2009 by Richard Kostecky
6 email : csf.kostej at gmail dot com
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
16#ifndef QGSTOLERANCE_H
17#define QGSTOLERANCE_H
18
19#include <QObject>
20
21#include "qgis_core.h"
22#include "qgis_sip.h"
23
24class QgsMapSettings;
25class QgsMapLayer;
26class QgsPointXY;
27
32class CORE_EXPORT QgsTolerance
33{
34 Q_GADGET
35 public:
36
42 {
48 ProjectUnits
49 };
50 Q_ENUM( UnitType )
51
52
58 static double vertexSearchRadius( const QgsMapSettings &mapSettings );
59
65 static double vertexSearchRadius( QgsMapLayer *layer, const QgsMapSettings &mapSettings );
66
72 static double defaultTolerance( QgsMapLayer *layer, const QgsMapSettings &mapSettings );
73
83 static double toleranceInProjectUnits( double tolerance, QgsMapLayer *layer, const QgsMapSettings &mapSettings, QgsTolerance::UnitType units );
84
93 static double toleranceInMapUnits( double tolerance, QgsMapLayer *layer, const QgsMapSettings &mapSettings, UnitType units = LayerUnits );
94
95 private:
96 static double computeMapUnitPerPixel( QgsMapLayer *layer, const QgsMapSettings &mapSettings );
97 static QgsPointXY toLayerCoordinates( QgsMapLayer *layer, const QgsMapSettings &mapSettings, QPoint point );
98
99};
100
101#endif
Base class for all map layer types.
Definition: qgsmaplayer.h:73
The QgsMapSettings class contains configuration for rendering of the map.
A class to represent a 2D point.
Definition: qgspointxy.h:59
This is the class is providing tolerance value in map unit values.
Definition: qgstolerance.h:33
UnitType
Type of unit of tolerance value from settings.
Definition: qgstolerance.h:42
@ Pixels
Pixels unit of tolerance.
Definition: qgstolerance.h:46
@ LayerUnits
Layer unit value.
Definition: qgstolerance.h:44