Added small utility to dump the result of a packed texture into a img

wrap/qt/PolyToQImage.cpp

@@ -0,0 +1,39 @@
+#include <QImage>
+#include <QPainter>
+
+#include "PolyToQImage.h"
+#include <wrap/qt/col_qt_convert.h>
+using namespace vcg;
+using namespace std;
+
+int dumpPolySet(const char * imageName,vector< vector<Point2f> > &polyVec, vector<Similarity2f> &trVec, int width, int height)
+{
+  QImage img(width,height,QImage::Format_RGB32);
+  img.fill(qRgb(128,128,128));
+  QPainter painter(&img);           // paint in picture
+  for(size_t i=0;i<polyVec.size();++i)
+  {
+    QVector<QPointF> ppQ;
+    for(int j=0;j<polyVec[i].size();++j)
+    {
+      Point2f pp=trVec[i]*polyVec[i][j];
+      ppQ.push_back(QPointF(pp[0],pp[1]));
+    }
+
+    QBrush bb(vcg::ColorConverter::ToQColor(Color4b::Scatter(polyVec.size(),i)));
+    painter.setBrush(bb);
+    painter.drawPolygon(&*ppQ.begin(),ppQ.size(),Qt::OddEvenFill);
+
+  }
+  painter.end();
+  img = img.mirrored(false,true);
+  img.save(imageName);
+
+  int emptyCnt=0;
+  for(int i=0;i<width;++i)
+    for(int j=0;j<height;++j)
+      if(img.pixel(i,j) == qRgb(128,128,128)) emptyCnt++;
+
+  return emptyCnt;
+}
+

wrap/qt/PolyToQImage.h

@@ -0,0 +1,8 @@
+#ifndef POLYTOQIMAGE_H
+#define POLYTOQIMAGE_H
+#include <vcg/space/point2.h>
+#include <vcg/math/similarity2.h>
+
+int dumpPolySet(const char * imageName, std::vector< std::vector<vcg::Point2f> > &polyVec, std::vector<vcg::Similarity2f> &trVec,int width=1024,int height=1024);
+
+#endif // POLYTOQIMAGE_H