GEOS 3.14.0dev
GeometricShapeFactory.h
1/**********************************************************************
2 *
3 * GEOS - Geometry Engine Open Source
4 * http://geos.osgeo.org
5 *
6 * Copyright (C) 2001-2002 Vivid Solutions Inc.
7 * Copyright (C) 2006 Refractions Research Inc.
8 *
9 * This is free software; you can redistribute and/or modify it under
10 * the terms of the GNU Lesser General Public Licence as published
11 * by the Free Software Foundation.
12 * See the COPYING file for more information.
13 *
14 **********************************************************************
15 *
16 * Last port: util/GeometricShapeFactory.java rev 1.14 (JTS-1.10+)
17 * (2009-03-19)
18 *
19 **********************************************************************/
20
21#pragma once
22
23#include <geos/export.h>
24#include <cassert>
25#include <memory>
26
27#include <geos/geom/Coordinate.h>
28
29#ifdef _MSC_VER
30#pragma warning(push)
31#pragma warning(disable: 4251) // warning C4251: needs to have dll-interface to be used by clients of class
32#endif
33
34// Forward declarations
35namespace geos {
36namespace geom {
37class Coordinate;
38class Envelope;
39class Polygon;
40class GeometryFactory;
41class PrecisionModel;
42class LineString;
43}
44}
45
46namespace geos {
47namespace util { // geos::util
48
49
66class GEOS_DLL GeometricShapeFactory {
67protected:
68 class Dimensions {
69 public:
70 Dimensions();
71 geom::CoordinateXY base;
72 geom::CoordinateXY centre;
73 double width;
74 double height;
75 void setBase(const geom::CoordinateXY& newBase);
76 void setCentre(const geom::CoordinateXY& newCentre);
77 void setSize(double size);
78 void setWidth(double nWidth);
79 void setHeight(double nHeight);
80
81 // Return newly-allocated object, ownership transferred
82 std::unique_ptr<geom::Envelope> getEnvelope() const;
83 };
84 const geom::GeometryFactory* geomFact; // externally owned
85 const geom::PrecisionModel* precModel; // externally owned
86 Dimensions dim;
87 uint32_t nPts;
88
89 geom::CoordinateXY coord(double x, double y) const;
90
91public:
92
102
103 virtual
105
115 std::unique_ptr<geom::LineString> createArc(double startAng, double angExtent);
116
128 std::unique_ptr<geom::Polygon> createArcPolygon(double startAng, double angExt);
129
135 std::unique_ptr<geom::Polygon> createCircle();
136
142 std::unique_ptr<geom::Polygon> createRectangle();
143
152 void setBase(const geom::CoordinateXY& base);
153
161 void setCentre(const geom::CoordinateXY& centre);
162
168 void setHeight(double height);
169
173 void setNumPoints(uint32_t nNPts);
174
181 void setSize(double size);
182
188 void setWidth(double width);
189
190};
191
192} // namespace geos::util
193} // namespace geos
194
195#ifdef _MSC_VER
196#pragma warning(pop)
197#endif
198
Supplies a set of utility methods for building Geometry objects from CoordinateSequence or other Geom...
Definition GeometryFactory.h:70
Specifies the precision model of the Coordinate in a Geometry.
Definition PrecisionModel.h:88
Computes various kinds of common geometric shapes.
Definition GeometricShapeFactory.h:66
std::unique_ptr< geom::Polygon > createRectangle()
Creates a rectangular Polygon.
void setHeight(double height)
Sets the height of the shape.
void setNumPoints(uint32_t nNPts)
Sets the total number of points in the created Geometry.
GeometricShapeFactory(const geom::GeometryFactory *factory)
Create a shape factory which will create shapes using the given GeometryFactory.
std::unique_ptr< geom::Polygon > createCircle()
Creates a circular Polygon.
std::unique_ptr< geom::Polygon > createArcPolygon(double startAng, double angExt)
Creates an elliptical arc polygon.
void setCentre(const geom::CoordinateXY &centre)
Sets the location of the shape by specifying the centre of the shape's bounding box.
void setWidth(double width)
Sets the width of the shape.
std::unique_ptr< geom::LineString > createArc(double startAng, double angExtent)
Creates an elliptical arc, as a LineString.
void setBase(const geom::CoordinateXY &base)
Sets the location of the shape by specifying the base coordinate (which in most cases is the * lower ...
void setSize(double size)
Sets the size of the extent of the shape in both x and y directions.
Basic namespace for all GEOS functionalities.
Definition geos.h:39