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Mathieu Westphal (Kitware) authored
This adds the possibility to show an histogram in the pqColorOpacityEditorWidget When showed, the texture is hidden. It is controlled by the following button : A checkbox to enable/disable the showing of the histogram A button that highlights when the histogram is out of date and compute the histogram when clicked A checkbox to automaticaly compute the histogram if it is out of date A slider to control the number of bins of the histogram This also adds a test and a .md file.
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