Added pseudo-color operation

app/Operations/PseudoColorOp.cpp

+/*
+ * Copyright 2011-2012 INSA Rennes
+ *
+ * This file is part of EIImage.
+ *
+ * EIImage 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EIImage is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EIImage.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "PseudoColorOp.h"
+#include "../Tools.h"
+#include <Converter.h>
+#include <QColor>
+
+using namespace std;
+using namespace imagein;
+
+PseudoColorOp::PseudoColorOp() : Operation(Tools::tr("Pseudo color").toStdString())
+{
+}
+
+bool PseudoColorOp::needCurrentImg() const {
+    return true;
+}
+
+void PseudoColorOp::operator()(const imagein::Image* image, const std::map<const imagein::Image*, std::string>&) {
+   GrayscaleImage* tmpImg = Converter<GrayscaleImage>::convert(*image);
+   Image* resImg = new Image(tmpImg->getWidth(), tmpImg->getHeight(), 3);
+    for(unsigned int j = 0; j < tmpImg->getHeight(); ++j) {
+        for(unsigned int i = 0; i < tmpImg->getWidth(); ++i) {
+            Image::depth_t value = tmpImg->getPixel(i, j);
+            const int nhue = 256;
+            const int ngrad = ceil(256. / (double)nhue);
+            const int hue = floor(value * nhue / 256); /* € [0, nhue[ */
+            const int grad = value - ceil((double)hue * 256. / (double)nhue); /* € [0, ngrad[ */
+            QColor color = QColor::fromHsl(300 - hue * 300 / nhue, 255, (grad + 1) * 255 / (ngrad + 1));
+            resImg->setPixel(i, j, 0, color.red());
+            resImg->setPixel(i, j, 1, color.green());
+            resImg->setPixel(i, j, 2, color.blue());
+        }
+    }
+    delete tmpImg;
+    outImage(resImg, "Pseudo color");
+
+}
+

app/Operations/PseudoColorOp.h

+/*
+ * Copyright 2011-2012 INSA Rennes
+ *
+ * This file is part of EIImage.
+ *
+ * EIImage 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * EIImage is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with EIImage.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <Operation.h>
+#include <Image.h>
+
+#ifndef PSEUDOCOLOROP_H
+#define PSEUDOCOLOROP_H
+
+class PseudoColorOp : public Operation
+{
+public:
+    PseudoColorOp();
+
+    void operator()(const imagein::Image*, const std::map<const imagein::Image*, std::string>&);
+
+    bool needCurrentImg() const;
+};
+
+#endif // PSEUDOCOLOROP_H