/usr/include/qgis/qgssimplifymethod.h is in libqgis-dev 2.14.11+dfsg-3+deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | /***************************************************************************
qgssimplifymethod.h
---------------------
begin : December 2013
copyright : (C) 2013 by Matthias Kuhn / Alvaro Huarte
email :
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#ifndef QGSSIMPLIFYMETHOD_H
#define QGSSIMPLIFYMETHOD_H
class QgsAbstractGeometrySimplifier;
/**
* This class contains information about how to simplify geometries fetched from a QgsFeatureIterator
* @note added in 2.2
*/
class CORE_EXPORT QgsSimplifyMethod
{
public:
enum MethodType
{
NoSimplification, //!< No simplification is applied
OptimizeForRendering, //!< Simplify using the map2pixel data to optimize the rendering of geometries
PreserveTopology //!< Simplify using the Douglas-Peucker algorithm ensuring that the result is a valid geometry
};
//! construct a default method
QgsSimplifyMethod();
//! Sets the simplification type
void setMethodType( MethodType methodType );
//! Gets the simplification type
inline MethodType methodType() const { return mMethodType; }
//! Sets the tolerance of simplification in map units. Represents the maximum distance in map units between two coordinates which can be considered equal.
void setTolerance( double tolerance );
//! Gets the tolerance of simplification in map units . Represents the maximum distance in map units between two coordinates which can be considered equal.
inline double tolerance() const { return mTolerance; }
//! Sets the simplification threshold in pixels. Represents the maximum distance in pixels between two coordinates which can be considered equal.
void setThreshold( float threshold ) { mThreshold = threshold; }
//! Gets the simplification threshold in pixels. Represents the maximum distance in pixels between two coordinates which can be considered equal.
inline float threshold() const { return mThreshold; }
//! Sets whether the simplification executes after fetch the geometries from provider, otherwise it executes, when supported, in provider before fetch the geometries
void setForceLocalOptimization( bool localOptimization );
//! Gets whether the simplification executes after fetch the geometries from provider, otherwise it executes, when supported, in provider before fetch the geometries
inline bool forceLocalOptimization() const { return mForceLocalOptimization; }
//! Creates a geometry simplifier according to specified method
static QgsAbstractGeometrySimplifier* createGeometrySimplifier( const QgsSimplifyMethod& simplifyMethod );
protected:
//! Simplification method
MethodType mMethodType;
//! Tolerance of simplification, it represents the maximum distance between two coordinates which can be considered equal
double mTolerance;
/** Simplification threshold */
float mThreshold;
//! Simplification executes after fetch the geometries from provider, otherwise it executes, when supported, in provider before fetch the geometries
bool mForceLocalOptimization;
};
#endif // QGSSIMPLIFYMETHOD_H
|