QGIS API Documentation  3.23.0-Master (eb871beae0)
qgscolorramptexture.h
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1 /***************************************************************************
2  qgscolorramptexture.h
3  -------------------------
4  begin : january 2020
5  copyright : (C) 2020 by Vincent Cloarec
6  email : vcloarec at gmail dot com
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 
18 #ifndef QGSCOLORRAMPTEXTURE_H
19 #define QGSCOLORRAMPTEXTURE_H
20 
22 
23 #include <Qt3DRender/QEffect>
24 #include <Qt3DRender/QGraphicsApiFilter>
25 #include <Qt3DRender/QParameter>
26 #include <Qt3DRender/QTexture>
27 
28 #include <QUrl>
29 #include <QVector2D>
30 #include <QVector3D>
31 #include <QVector4D>
32 #include <Qt3DRender/QBuffer>
33 #include <QByteArray>
34 
35 #include "qgsmeshlayer.h"
36 #include "qgsmeshlayerutils.h"
37 #include "qgstriangularmesh.h"
38 
39 #define SIP_NO_FILE
40 
41 class QgsColorRampTextureGenerator: public Qt3DRender::QTextureImageDataGenerator
42 {
43 
44  public:
45  QgsColorRampTextureGenerator( const QgsColorRampShader &colorRampShader, double verticalScale = 1 );
46 
47  public:
48  Qt3DRender::QTextureImageDataPtr operator()() override;
49 
50  bool operator ==( const Qt3DRender::QTextureImageDataGenerator &other ) const override;
51 
52  QT3D_FUNCTOR( QgsColorRampTextureGenerator )
53 
54  private:
55  QgsColorRampShader mColorRampShader;
56  double mVerticalScale = 1;
57 };
58 
59 
60 class QgsColorRampTexture: public Qt3DRender::QAbstractTextureImage
61 {
62  public:
63  QgsColorRampTexture( const QgsColorRampShader &colorRampShader, double verticalScale = 1, Qt3DCore::QNode *parent = nullptr );
64  // QAbstractTextureImage interface
65  protected:
66  Qt3DRender::QTextureImageDataGeneratorPtr dataGenerator() const override;
67 
68  private:
69  QgsColorRampShader mColorRampShader;
70  double mVerticalScale = 1;
71 };
72 
74 
75 #endif // QGSCOLORRAMPTEXTURE_H
A ramp shader will color a raster pixel based on a list of values ranges in a ramp.
bool operator==(const QgsFeatureIterator &fi1, const QgsFeatureIterator &fi2)