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- NEW added several new color palettes and fixed/improved handling of palettes with few colors in them

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- NEW added several tool functions to work with color palettes
-
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jkriege2 2023-07-21 22:07:46 +02:00
parent ee7387d033
commit d44316c8e3
2 changed files with 788 additions and 493 deletions
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1087
lib/jkqtcommon/jkqtpbasicimagetools.cpp
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lib/jkqtcommon/jkqtpbasicimagetools.h
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@ -116,15 +116,61 @@ enum JKQTPMathImageColorPalette {
JKQTPMathImageCopper, /*!< \image html palettes/palette_copper.png */
JKQTPMathImageAutumn, /*!< \image html palettes/palette_autumn.png */
JKQTPMathImageSeismic, /*!< \image html palettes/palette_seismic.png */
JKQTPMathImageSeismic_STEP, /*!< \image html palettes/palette_seismic_step.png */
JKQTPMathImageTerrain, /*!< \image html palettes/palette_terrain.png */
JKQTPMathImageTerrain_STEP, /*!< \image html palettes/palette_terrain_step.png */
JKQTPMathImageViridis, /*!< \image html palettes/palette_viridis.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py https://github.com/BIDS/colormap/blob/master/colormaps.py */
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageINVERTED_Viridis, /*!< \image html palettes/palette_invviridis.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageViridis_STEP, /*!< \image html palettes/palette_viridis_step.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageINVERTED_Viridis_STEP, /*!< \image html palettes/palette_invviridis_step.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageMagma, /*!< \image html palettes/palette_magma.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py https://github.com/BIDS/colormap/blob/master/colormaps.py */
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageINVERTED_Magma, /*!< \image html palettes/palette_invmagma.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageMagma_STEP, /*!< \image html palettes/palette_magma_step.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageINVERTED_Magma_STEP, /*!< \image html palettes/palette_invmagma_step.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageInferno, /*!< \image html palettes/palette_inferno.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py https://github.com/BIDS/colormap/blob/master/colormaps.py */
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageINVERTED_Inferno, /*!< \image html palettes/palette_invinferno.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageInferno_STEP, /*!< \image html palettes/palette_inferno_step.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageINVERTED_Inferno_STEP, /*!< \image html palettes/palette_invinferno_step.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImagePlasma, /*!< \image html palettes/palette_plasma.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py https://github.com/BIDS/colormap/blob/master/colormaps.py */
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageINVERTED_Plasma, /*!< \image html palettes/palette_invplasma.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImagePlasma_STEP, /*!< \image html palettes/palette_plasma_step.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageINVERTED_Plasma_STEP, /*!< \image html palettes/palette_invplasma_step.png
\see from https://github.com/BIDS/colormap/blob/master/colormaps.py */
JKQTPMathImageIBMColorBlindSafe, /*!< \image html palettes/palette_IBMColorBlindSafe.png
\note color-blind freindly!
\see from https://lospec.com/palette-list/ibm-color-blind-safe */
JKQTPMathImageIBMColorBlindSafe_STEP, /*!< \image html palettes/palette_IBMColorBlindSafe_step.png
\note color-blind freindly!
\see from https://lospec.com/palette-list/ibm-color-blind-safe */
JKQTPMathImageOkabeIto_STEP, /*!< \image html palettes/palette_OkabeIto_step.png
\note color-blind freindly!
\see from https://yoshke.org/blog/colorblind-friendly-diagrams and M. Okabe and K. Ito, How to make figures and presentations that are friendly to color blind people, University of Tokyo, 2002. */
JKQTPMathImageOkabeItoDarker_STEP, /*!< darker version of JKQTPMathImageOkabeItoDarker_STEP \image html palettes/palette_OkabeItoDarker_step.png
\note color-blind freindly!
\see from https://yoshke.org/blog/colorblind-friendly-diagrams and M. Okabe and K. Ito, How to make figures and presentations that are friendly to color blind people, University of Tokyo, 2002. */
JKQTPMathImageOkabeItoLighter_STEP, /*!< lighter version of JKQTPMathImageOkabeItoDarker_STEP \image html palettes/palette_OkabeItoLighter_step.png
\note color-blind freindly!
\see from https://yoshke.org/blog/colorblind-friendly-diagrams and M. Okabe and K. Ito, How to make figures and presentations that are friendly to color blind people, University of Tokyo, 2002. */
JKQTPMathImageDefault_STEP, /*!< \image html palettes/palette_jkqtplotterdefault_steps.png
This is the color cycle used to color graphs in JKQTPlotter#s default style.
*/
JKQTPMathImageBLUEMAGENTAYELLOW, /*!< \image html palettes/palette_BlMaYe.png */
@ -216,6 +262,9 @@ struct JKQTPImageTools {
/*! \brief size of the lookup tables used by JKQTFPimagePlot_array2image() */
static JKQTCOMMON_LIB_EXPORT const int LUTSIZE;
/*! \brief number of entries in an auto-generated steps-palette */
static JKQTCOMMON_LIB_EXPORT const int NDEFAULTSTEPS;
/*! \brief loads all palettes defined in the given palette files \a filename into global_jkqtpimagetools_userluts
and assigns a new LUT-ID >=JKQTPMathImageFIRST_REGISTERED_USER_PALETTE to each palette
All new IDs are returned as a list
@ -357,7 +406,7 @@ struct JKQTPImageTools {
img = QImage(width, height, QImage::Format_ARGB32);
if (jkqtp_approximatelyEqual(min, max, JKQTP_DOUBLE_EPSILON)) {
img.fill(0);
img.fill(lut_used[0]);
} else {
const int lutSize=lut_used.size();
if (lutSize>0) {
@ -371,16 +420,16 @@ struct JKQTPImageTools {
} else if (std::isinf(val)) {
line[i]=infColor.rgba();
} else {
const int v = static_cast<int>((val-min)/delta*static_cast<double>(lutSize-1));
const int vv = (v < 0) ? 0 : ( (v >= lutSize) ? (lutSize-1) : v);
const int v = static_cast<int>((val-min)/delta*static_cast<double>(lutSize));
const int vv = qBound<int>(0, v, lutSize-1);
line[i]=lut_used[vv];
if ((v<0)&&(paletteMinFail==JKQTPMathImageGivenColor)) {
line[i]=minFailColor.rgba();
} else if ((v>lutSize)&&(paletteMaxFail==JKQTPMathImageGivenColor)) {
} else if ((v>=lutSize)&&(paletteMaxFail==JKQTPMathImageGivenColor)) {
line[i]=maxFailColor.rgba();
} else if ((v<0)&&(paletteMinFail==JKQTPMathImageTransparent)) {
line[i]=QColor(Qt::transparent).rgba();
} else if ((v>lutSize)&&(paletteMaxFail==JKQTPMathImageTransparent)) {
} else if ((v>=lutSize)&&(paletteMaxFail==JKQTPMathImageTransparent)) {
line[i]=QColor(Qt::transparent).rgba();
}
}
@ -969,6 +1018,101 @@ struct JKQTPColorPaletteSingleColorLinSegment {
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTLinSegmentsSorted(const QList<JKQTPColorPaletteSingleColorLinSegment>& itemsR, const QList<JKQTPColorPaletteSingleColorLinSegment>& itemsG, const QList<JKQTPColorPaletteSingleColorLinSegment>& itemsB, int lut_size=JKQTPImageTools::LUTSIZE);
/*! \brief version of qRgb() that does not require to add the alpha part
\ingroup jkqtplotter_imagelots_tools_LUTS
*/
inline QRgb jkqtp_qRgbOpaque(QRgb col) {
return col | 0xFF000000;
}
/*! \brief for building palettes from list of colors and position values, using JKQTPBuildColorPaletteLUTLinInterpolateSorted(), ...
\ingroup jkqtplotter_imagelots_tools_LUTS
\see JKQTPBuildColorPaletteLUTLinInterpolateSorted(), JKQTPBuildColorPaletteLUTSorted(), JKQTPBuildColorPaletteLUTColorsOnlySteps(), JKQTPBuildColorPaletteLUT(), JKQTPBuildColorPaletteLUTLinInterpolate()
*/
class JKQTCOMMON_LIB_EXPORT JKQTPPaletteList: public QList<QPair<double, QRgb> >
{
public:
typedef QList<QPair<double, QRgb> > ListType;
JKQTPPaletteList(): ListType() {};
JKQTPPaletteList(qsizetype size): ListType(size) {};
JKQTPPaletteList(qsizetype size, QList::parameter_type value): ListType(size, value) {};
template <class T>
JKQTPPaletteList(std::initializer_list<QPair<double, QRgb>> args): ListType(args) {};
template <typename InputIterator, QtPrivate::IfIsInputIterator<InputIterator> = true>
JKQTPPaletteList(InputIterator first, InputIterator last): ListType(first, last) {};
JKQTPPaletteList(ListType &&other):ListType(std::forward<ListType>(other)) {};
JKQTPPaletteList(const ListType &other):ListType(other) {};
using ListType::push_back;
inline void push_back(QRgb rgb) {
if (size()==0) push_back(ListType::value_type(0.0, rgb));
else if (size()==1) push_back(ListType::value_type(at(0).first+1.0, rgb));
else {
double mi=0,ma=0, delta=0;
getMinMaxPosition(mi,ma,&delta);
push_back(ListType::value_type(ma+delta, rgb));
}
}
inline void push_back(double pos, QRgb rgb) {
push_back(ListType::value_type(pos, rgb));
}
using ListType::operator<<;
inline JKQTPPaletteList& operator<<(QRgb rgb) {
push_back(rgb);
return *this;
}
/** \brief returns the minimum value of the double-component */
double getMinPosition() const {
double mi=0;
bool first=true;
for (const auto& c: *this) {
if (first) {
mi=c.first;
first=false;
} else {
mi=qMin<int>(mi, c.first);
}
}
return mi;
}
/** \brief returns the maximum value of the double-component */
double getMaxPosition() const {
double ma=0;
bool first=true;
for (const auto& c: *this) {
if (first) {
ma=c.first;
first=false;
} else {
ma=qMax<int>(ma, c.first);
}
}
return ma;
}
/** \brief returns the minimum and maximum value of the double-component, as well as the avg. increment between two such values */
void getMinMaxPosition(double& mi, double& ma, double* avgDelta=nullptr) const {
mi=ma=0;
bool first=true;
for (const auto& c: *this) {
if (first) {
mi=ma=c.first;
first=false;
} else {
ma=qMax<int>(ma, c.first);
mi=qMin<int>(mi, c.first);
}
}
if (avgDelta) {
if (size()<=1) *avgDelta=1;
else *avgDelta=(ma-mi)/static_cast<double>(size()-1);
}
}
};
/*! \brief build a linearly interpolated palette (as a look-up table) with \a lut_size entries by linearly interpolating between the nodes in \a items .
\b NOTE: \a items is assumed to be sorted by the first component of the \c QPair<double,QRgb> entries!
@ -986,7 +1130,7 @@ JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTLinSegme
\see JKQTPBuildColorPaletteLUTLinInterpolate(), \ref JKQTPlotterImagePlotUserPalette
*/
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTLinInterpolateSorted(const QList<QPair<double, QRgb> >& items, int lut_size=JKQTPImageTools::LUTSIZE);
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTLinInterpolateSorted(const JKQTPPaletteList& items, int lut_size=JKQTPImageTools::LUTSIZE);
/*! \brief build a palette (as a look-up table) with \a lut_size entries that step between the nodes provided in \a items.
@ -1005,14 +1149,14 @@ JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTLinInter
\see JKQTPBuildColorPaletteLUT(), \ref JKQTPlotterImagePlotUserPalette
*/
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTSorted(const QList<QPair<double, QRgb> >& items, int lut_size=JKQTPImageTools::LUTSIZE);
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTSorted(const JKQTPPaletteList& items, int lut_size=JKQTPImageTools::LUTSIZE);
/*! \brief like JKQTPBuildColorPaletteLUTLinInterpolateSorted(), but sorts \a items before processing it!
\ingroup jkqtplotter_imagelots_tools_LUTS
\copydetails JKQTPBuildColorPaletteLUTLinInterpolateSorted()
*/
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTLinInterpolate(QList<QPair<double, QRgb> > items, int lut_size=JKQTPImageTools::LUTSIZE);
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTLinInterpolate(JKQTPPaletteList items, int lut_size=JKQTPImageTools::LUTSIZE);
/*! \brief like JKQTPBuildColorPaletteLUTSorted(), but sorts \a items before processing it!
@ -1020,7 +1164,14 @@ JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTLinInter
\copydetails JKQTPBuildColorPaletteLUTSorted()
*/
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUT(QList<QPair<double, QRgb> > items, int lut_size=JKQTPImageTools::LUTSIZE);
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUT(JKQTPPaletteList items, int lut_size=JKQTPImageTools::LUTSIZE);
/*! \brief takes the QRgb-values in \a items and builds a stepped palette from them, ignoring the double-values. the palette will have items.size() entries.
\ingroup jkqtplotter_imagelots_tools_LUTS
\note \a items wird zunächst nach dem \c double sortiert
*/
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTColorsOnlySteps(JKQTPPaletteList items);
/*! \brief like JKQTPBuildColorPaletteLUTLinSegmentsSorted(), but sorts \a itemsR, \a itemB, \a itemsG before processing them!
\ingroup jkqtplotter_imagelots_tools_LUTS
@ -1048,6 +1199,23 @@ JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTLinInter
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUT(const QMap<double, QRgb>& items, int lut_size=JKQTPImageTools::LUTSIZE);
/*! \brief takes an existing JKQTPImageTools::LUTType and subsamples \a lut_size elements from it
\ingroup jkqtplotter_imagelots_tools_LUTS
*/
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPBuildColorPaletteLUTBySubsampling(const JKQTPImageTools::LUTType& items, int lut_size=JKQTPImageTools::NDEFAULTSTEPS);
/*! \brief modify each element of a given lut with a given functor that receives the color and an index
\ingroup jkqtplotter_imagelots_tools_LUTS
*/
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPModifyLUT(JKQTPImageTools::LUTType lut, std::function<QRgb(int, QRgb)> f);
/*! \brief modify each element of a given lut with a given functor that receives the color
\ingroup jkqtplotter_imagelots_tools_LUTS
*/
JKQTPImageTools::LUTType JKQTCOMMON_LIB_EXPORT JKQTPModifyLUT(JKQTPImageTools::LUTType lut, std::function<QRgb(QRgb)> f);
/** \brief describes how to modify a rendered image with a second data array \see ModifierModeToString(), StringToModifierMode(), JKQTPImageModifierModeComboBox
\ingroup jkqtplotter_imagelots_tools*/