QGIS API Documentation 3.27.0-Master (0a97e3138f)
qgstessellator.h
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1/***************************************************************************
2 qgstessellator.h
3 --------------------------------------
4 Date : July 2017
5 Copyright : (C) 2017 by Martin Dobias
6 Email : wonder dot sk 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 QGSTESSELLATOR_H
17#define QGSTESSELLATOR_H
18
19#include "qgis_core.h"
20#include "qgis_sip.h"
21#include "qgsrectangle.h"
22
23class QgsPolygon;
24class QgsMultiPolygon;
25
26#include <QVector>
27#include <memory>
28
40class CORE_EXPORT QgsTessellator
41{
42 public:
44 QgsTessellator( double originX, double originY, bool addNormals, bool invertNormals = false, bool addBackFaces = false, bool noZ = false,
45 bool addTextureCoords = false, int facade = 3, float textureRotation = 0.0f );
46
56 QgsTessellator( const QgsRectangle &bounds, bool addNormals, bool invertNormals = false, bool addBackFaces = false, bool noZ = false,
57 bool addTextureCoords = false, int facade = 3, float textureRotation = 0.0f );
58
60 void addPolygon( const QgsPolygon &polygon, float extrusionHeight );
61
67 QVector<float> data() const { return mData; }
68
70 int dataVerticesCount() const;
71
73 int stride() const { return mStride; }
74
78 std::unique_ptr< QgsMultiPolygon > asMultiPolygon() const SIP_SKIP;
79
84 float zMinimum() const { return mZMin; }
85
90 float zMaximum() const { return mZMax; }
91
92 private:
93 void init();
94
95 QgsRectangle mBounds;
96 double mOriginX = 0, mOriginY = 0;
97 bool mAddNormals = false;
98 bool mInvertNormals = false;
99 bool mAddBackFaces = false;
100 bool mAddTextureCoords = false;
101 QVector<float> mData;
102 int mStride;
103 bool mNoZ = false;
104 int mTessellatedFacade = 3;
105 float mTextureRotation = 0.0f;
106
107 float mZMin = std::numeric_limits<float>::max();
108 float mZMax = -std::numeric_limits<float>::max();
109};
110
111#endif // QGSTESSELLATOR_H
Multi polygon geometry collection.
Polygon geometry type.
Definition: qgspolygon.h:34
A rectangle specified with double values.
Definition: qgsrectangle.h:42
Class that takes care of tessellation of polygons into triangles.
QVector< float > data() const
Returns array of triangle vertex data.
int stride() const
Returns size of one vertex entry in bytes.
float zMaximum() const
Returns maximal Z value of the data (in world coordinates)
#define SIP_SKIP
Definition: qgis_sip.h:126