Differential D21046 Diff 57755 imagelib/effects/kpEffectHSV.cpp

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imagelib/effects/kpEffectHSV.cpp

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95 *pSaturation = 0; 95​ *pSaturation = 0;
96 } 96​ }
97 *pValue = static_cast<float> (r) / 255; 97​ *pValue = static_cast<float> (r) / 255;
98 } 98​ }
99} 99​}
100 100​
101static unsigned int HSVToColor(int alpha, float hue, float saturation, float value) 101​static unsigned int HSVToColor(int alpha, float hue, float saturation, float value)
102{ 102​{
103 //Q_ASSERT (hue >= 0 && hue <= 1 && saturation >= 0 && saturation <= 1 && value >= 0 && value <= 1); ​
104 ​
105 hue *= 5.999999f; 103​ hue *= 5.999999f;
106 int h = static_cast<int> (hue); 104​ int h = static_cast<int> (hue);
107 float f = hue - h; 105​ float f = hue - h;
108 float p = value * (1.0f - saturation); 106​ float p = value * (1.0 - saturation);
109 float q = value * (1.0f - ((h & 1) == 0 ? 1.0f - f : f) * saturation); 107​ float q = value * (1.0 - ((h & 1) == 0 ? 1.0 - f : f) * saturation);
110 switch(h) 108​ switch(h)
111 { 109​ {
112 case 0: return qRgba(static_cast<int> (value * 255.999999f), 110​ case 0: return qRgba(static_cast<int> (value * 255.999999),
113 static_cast<int> (q * 255.999999f), 111​ static_cast<int> (q * 255.999999),
114 static_cast<int> (p * 255.999999f), alpha); 112​ static_cast<int> (p * 255.999999), alpha);
115 113​
116 case 1: return qRgba(static_cast<int> (q * 255.999999f), 114​ case 1: return qRgba(static_cast<int> (q * 255.999999),
117 static_cast<int> (value * 255.999999f), 115​ static_cast<int> (value * 255.999999),
118 static_cast<int> (p * 255.999999f), alpha); 116​ static_cast<int> (p * 255.999999), alpha);
119 117​
120 case 2: return qRgba(static_cast<int> (p * 255.999999f), 118​ case 2: return qRgba(static_cast<int> (p * 255.999999),
121 static_cast<int> (value * 255.999999f), 119​ static_cast<int> (value * 255.999999),
122 static_cast<int> (q * 255.999999f), alpha); 120​ static_cast<int> (q * 255.999999), alpha);
123 121​
124 case 3: return qRgba(static_cast<int> (p * 255.999999f), 122​ case 3: return qRgba(static_cast<int> (p * 255.999999),
125 static_cast<int> (q * 255.999999f), 123​ static_cast<int> (q * 255.999999),
126 static_cast<int> (value * 255.999999f), alpha); 124​ static_cast<int> (value * 255.999999), alpha);
127 125​
128 case 4: return qRgba(static_cast<int> (q * 255.999999f), 126​ case 4: return qRgba(static_cast<int> (q * 255.999999),
129 static_cast<int> (p * 255.999999f), 127​ static_cast<int> (p * 255.999999),
130 static_cast<int> (value * 255.999999f), alpha); 128​ static_cast<int> (value * 255.999999), alpha);
131 129​
132 case 5: return qRgba(static_cast<int> (value * 255.999999f), 130​ case 5: return qRgba(static_cast<int> (value * 255.999999),
133 static_cast<int> (p * 255.999999f), 131​ static_cast<int> (p * 255.999999),
134 static_cast<int> (q * 255.999999f), alpha); 132​ static_cast<int> (q * 255.999999), alpha);
135 } 133​ }
136 return qRgba(0, 0, 0, alpha); 134​ return qRgba(0, 0, 0, alpha);
137} 135​}
138 136​
139static QRgb AdjustHSVInternal (QRgb pix, double hueDiv360, double saturation, double value) 137​static QRgb AdjustHSVInternal (QRgb pix, double hueDiv360, double saturation, double value)
140{ 138​{
141 float h, s, v; 139​ float h, s, v;
142 ::ColorToHSV(pix, &h, &s, &v); 140​ ::ColorToHSV(pix, &h, &s, &v);
143 141​
144 const int alpha = qAlpha(pix); 142​ const int alpha = qAlpha(pix);
145 143​
146 h += static_cast<float> (hueDiv360); 144​ h += static_cast<float> (hueDiv360);
147 h -= std::floor(h); 145​ h -= std::floor(h);
148 146​
149 s = qMax(0.0f, qMin(1.0f, s + static_cast<float> (saturation))); 147​ s = qMax(0.0f, qMin(static_cast<float>(1), s + static_cast<float> (saturation)));
150 148​
151 v = qMax(0.0f, qMin(1.0f, v + static_cast<float> (value))); 149​ v = qMax(0.0f, qMin(static_cast<float>(1), v + static_cast<float> (value)));
152 150​
153 return ::HSVToColor(alpha, h, s, v); 151​ return ::HSVToColor(alpha, h, s, v);
154} 152​}
155 153​
156static void AdjustHSV (QImage* pImage, double hue, double saturation, double value) 154​static void AdjustHSV (QImage* pImage, double hue, double saturation, double value)
157{ 155​{
158 hue /= 360; 156​ hue /= 360;
159 157​
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