comparison layer/ColourScale.h @ 1266:a34a2a25907c

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author Chris Cannam
date Thu, 01 Mar 2018 18:02:22 +0000
parents 4e7ed3252d80
children d79e21855aef
comparison
equal deleted inserted replaced
1265:6e724c81f18f 1266:a34a2a25907c
33 */ 33 */
34 class ColourScale 34 class ColourScale
35 { 35 {
36 public: 36 public:
37 struct Parameters { 37 struct Parameters {
38 Parameters() : colourMap(0), scaleType(ColourScaleType::Linear), 38 Parameters() : colourMap(0), scaleType(ColourScaleType::Linear),
39 minValue(0.0), maxValue(1.0), 39 minValue(0.0), maxValue(1.0),
40 threshold(0.0), gain(1.0), multiple(1.0) { } 40 threshold(0.0), gain(1.0), multiple(1.0) { }
41 41
42 /** A colour map index as used by ColourMapper */ 42 /** A colour map index as used by ColourMapper */
43 int colourMap; 43 int colourMap;
44 44
45 /** Distribution for the scale */ 45 /** Distribution for the scale */
46 ColourScaleType scaleType; 46 ColourScaleType scaleType;
47 47
48 /** Minimum value in source range */ 48 /** Minimum value in source range */
49 double minValue; 49 double minValue;
50 50
51 /** Maximum value in source range. Must be > minValue */ 51 /** Maximum value in source range. Must be > minValue */
52 double maxValue; 52 double maxValue;
53 53
54 /** Threshold below which every value is mapped to background 54 /** Threshold below which every value is mapped to background
55 pixel 0 */ 55 pixel 0 */
56 double threshold; 56 double threshold;
57 57
58 /** Gain to apply before thresholding, mapping, and clamping */ 58 /** Gain to apply before thresholding, mapping, and clamping */
59 double gain; 59 double gain;
60 60
61 /** Multiple to apply after thresholding and mapping. In most 61 /** Multiple to apply after thresholding and mapping. In most
62 * cases the gain parameter is the one you want instead of 62 * cases the gain parameter is the one you want instead of
63 * this, but this can be used for example with Log scale to 63 * this, but this can be used for example with Log scale to
64 * produce the log of some power of the original value, 64 * produce the log of some power of the original value,
104 /** 104 /**
105 * Return the colour corresponding to the given value. This is 105 * Return the colour corresponding to the given value. This is
106 * equivalent to getColourForPixel(getPixel(value), rotation). 106 * equivalent to getColourForPixel(getPixel(value), rotation).
107 */ 107 */
108 QColor getColour(double value, int rotation) const { 108 QColor getColour(double value, int rotation) const {
109 return getColourForPixel(getPixel(value), rotation); 109 return getColourForPixel(getPixel(value), rotation);
110 } 110 }
111 111
112 private: 112 private:
113 Parameters m_params; 113 Parameters m_params;
114 ColourMapper m_mapper; 114 ColourMapper m_mapper;