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| Original file line number | Diff line number | Diff line change |
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| /*************************************************************************** | ||
| qgscolorramptexture.h | ||
| ------------------------- | ||
| begin : january 2020 | ||
| copyright : (C) 2020 by Vincent Cloarec | ||
| email : vcloarec at gmail dot com | ||
| ***************************************************************************/ | ||
|
|
||
| /*************************************************************************** | ||
| * * | ||
| * 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. * | ||
| * * | ||
| ***************************************************************************/ | ||
|
|
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| #include "qgscolorramptexture.h" | ||
|
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| // ColorRampTextureGenerator | ||
|
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| ColorRampTextureGenerator::ColorRampTextureGenerator( const QgsColorRampShader &colorRampShader, double verticalScale ) | ||
| : mColorRampShader( colorRampShader ) | ||
| , mVerticalScale( verticalScale ) | ||
| { | ||
| } | ||
|
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| Qt3DRender::QTextureImageDataPtr ColorRampTextureGenerator::operator()() | ||
| { | ||
| Qt3DRender::QTextureImageDataPtr dataPtr = Qt3DRender::QTextureImageDataPtr::create(); | ||
| dataPtr->setFormat( QOpenGLTexture::RGBA32F ); | ||
| dataPtr->setTarget( QOpenGLTexture::Target1D ); | ||
| dataPtr->setPixelFormat( QOpenGLTexture::RGBA ); | ||
| dataPtr->setPixelType( QOpenGLTexture::Float32 ); | ||
|
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| QByteArray data; | ||
| QList<QgsColorRampShader::ColorRampItem> colorItemList = mColorRampShader.colorRampItemList(); | ||
| int size = colorItemList.count() ; | ||
|
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| dataPtr->setWidth( size ); | ||
| dataPtr->setHeight( 1 ); | ||
| dataPtr->setDepth( 1 ); | ||
| dataPtr->setFaces( 1 ); | ||
| dataPtr->setLayers( 1 ); | ||
| dataPtr->setMipLevels( 1 ); | ||
|
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| for ( int i = 0; i < colorItemList.count(); ++i ) | ||
| { | ||
| float mag = float( colorItemList.at( i ).value * mVerticalScale ); | ||
|
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| QColor color = colorItemList.at( i ).color; | ||
| float rf = float( color.redF() ); | ||
| float gf = float( color.greenF() ); | ||
| float bf = float( color.blueF() ); | ||
|
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| data.append( reinterpret_cast<const char *>( &mag ), sizeof( float ) ); | ||
| data.append( reinterpret_cast<const char *>( &rf ), sizeof( float ) ); | ||
| data.append( reinterpret_cast<const char *>( &gf ), sizeof( float ) ); | ||
| data.append( reinterpret_cast<const char *>( &bf ), sizeof( float ) ); | ||
|
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| } | ||
|
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| dataPtr->setData( data, sizeof( float ) ); //size is the size of the type, here float | ||
|
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| return dataPtr; | ||
| } | ||
|
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| bool ColorRampTextureGenerator::operator==( const Qt3DRender::QTextureImageDataGenerator &other ) const | ||
| { | ||
| const ColorRampTextureGenerator *otherFunctor = functor_cast<ColorRampTextureGenerator>( &other ); | ||
| if ( !otherFunctor ) | ||
| return false; | ||
|
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| QgsColorRampShader otherColorRampShader = otherFunctor->mColorRampShader; | ||
|
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| if ( mColorRampShader.colorRampItemList().count() != otherColorRampShader.colorRampItemList().count() || | ||
| mColorRampShader.classificationMode() != otherColorRampShader.classificationMode() || | ||
| mColorRampShader.colorRampType() != otherColorRampShader.colorRampType() ) | ||
| { | ||
| return false; | ||
| } | ||
|
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| QList<QgsColorRampShader::ColorRampItem> colorItemList = mColorRampShader.colorRampItemList(); | ||
| QList<QgsColorRampShader::ColorRampItem> otherColorItemList = otherColorRampShader.colorRampItemList(); | ||
| for ( int i = 0; i < colorItemList.count(); ++i ) | ||
| { | ||
| const QColor color = colorItemList.at( i ).color; | ||
| const QColor otherColor = otherColorItemList.at( i ).color; | ||
| double value = colorItemList.at( i ).value; | ||
| double otherValue = otherColorItemList.at( i ).value; | ||
| if ( color != otherColor || | ||
| ( !std::isnan( value ) && !std::isnan( otherValue ) && colorItemList.at( i ).value != otherColorItemList.at( i ).value ) || | ||
| ( std::isnan( value ) != std::isnan( otherValue ) ) ) | ||
| return false; | ||
| } | ||
|
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| return true; | ||
| } | ||
|
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| // ColorRampTexture | ||
|
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| ColorRampTexture::ColorRampTexture( const QgsColorRampShader &colorRampShader, double verticalScale, Qt3DCore::QNode *parent ) | ||
| : Qt3DRender::QAbstractTextureImage( parent ), | ||
| mColorRampShader( colorRampShader ), | ||
| mVerticalScale( verticalScale ) | ||
| { | ||
|
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| } | ||
|
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| Qt3DRender::QTextureImageDataGeneratorPtr ColorRampTexture::dataGenerator() const | ||
| { | ||
| return Qt3DRender::QTextureImageDataGeneratorPtr( new ColorRampTextureGenerator( mColorRampShader, mVerticalScale ) ); | ||
| } |
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