From 61f7da06ed559741ff19b08289426f023ba8671b Mon Sep 17 00:00:00 2001
From: Jean-Francois Remacle <jean-francois.remacle@uclouvain.be>
Date: Wed, 12 Feb 2003 09:21:11 +0000
Subject: [PATCH] *** empty log message ***
---
Graphics/ReadImg.cpp | 124 +++++++++++++++++++++++++++++++++++++++++++
Graphics/ReadImg.h | 4 ++
2 files changed, 128 insertions(+)
create mode 100644 Graphics/ReadImg.cpp
create mode 100644 Graphics/ReadImg.h
diff --git a/Graphics/ReadImg.cpp b/Graphics/ReadImg.cpp
new file mode 100644
index 0000000000..2c120f43c9
--- /dev/null
+++ b/Graphics/ReadImg.cpp
@@ -0,0 +1,124 @@
+// Copyright (C) 1997 - 2002 C. Geuzaine, J.-F. Remacle
+//
+// This program 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 2 of the License, or
+// (at your option) any later version.
+//
+// This program 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 this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+// USA.
+//
+// Please report all bugs and problems to "gmsh@geuz.org".
+
+#include "ReadImg.h"
+#include "Gmsh.h"
+#include "GmshUI.h"
+#include "Views.h"
+
+#include <FL/Fl_PNM_Image.H>
+
+// from an image, we create a post pro object
+Post_View * Img2Pos ( Fl_RGB_Image & img_init)
+{
+
+ img_init.desaturate();
+ Fl_RGB_Image *img = ( Fl_RGB_Image * ) img_init.copy(128,128);
+
+ const uchar * data = img->array;
+ int height = img->h();
+ int width = img->w();
+ int dim = img->d();
+
+ Post_View *v = BeginView (1);
+
+ for (int i=0;i<width-1;i++)
+ {
+ const uchar *a = data + i*width*dim;
+ const uchar *a1 = data + (i+1)*width*dim;
+ double y = 1.-(double) i/((double) width - 1.);
+ double y1 = 1.-(double) (i+1)/((double) width - 1.);
+ for (int j=0;j<height-1;j++)
+ {
+ double x = (double) j/((double) height - 1.);
+ double x1 = (double) (j+1)/((double) height - 1.);
+ double z = 0.0;
+ if (dim == 1) // grayscale
+ {
+ uchar G1 = a[j];
+ uchar G2 = a1[j];
+ uchar G3 = a1[j+1];
+ uchar G4 = a[j+1];
+ const double eps = 0.005;
+ const double Eps = .25;
+
+ double val1 = Eps * (G1) / 255. + eps;
+ double val2 = Eps * (G2) / 255. + eps;
+ double val3 = Eps * (G3) / 255. + eps;
+ double val4 = Eps * (G4) / 255. + eps;
+
+ /*
+ val1*=val1;
+ val2*=val2;
+ val3*=val3;
+ val4*=val4;
+ */
+ List_Add (v->ST,&x);
+ List_Add (v->ST,&x);
+ List_Add (v->ST,&x1);
+
+ List_Add (v->ST,&y);
+ List_Add (v->ST,&y1);
+ List_Add (v->ST,&y1);
+
+ List_Add (v->ST,&z);
+ List_Add (v->ST,&z);
+ List_Add (v->ST,&z);
+
+ List_Add (v->ST,&val1);
+ List_Add (v->ST,&val2);
+ List_Add (v->ST,&val3);
+ v->NbST++;
+
+
+ List_Add (v->ST,&x);
+ List_Add (v->ST,&x1);
+ List_Add (v->ST,&x1);
+
+ List_Add (v->ST,&y);
+ List_Add (v->ST,&y1);
+ List_Add (v->ST,&y);
+
+ List_Add (v->ST,&z);
+ List_Add (v->ST,&z);
+ List_Add (v->ST,&z);
+
+ List_Add (v->ST,&val1);
+ List_Add (v->ST,&val3);
+ List_Add (v->ST,&val4);
+ v->NbST++;
+ }
+ }
+ }
+ delete img;
+ return v;
+}
+
+
+void read_pnm (char *name)
+{
+ Fl_PNM_Image theVeryNicePicture ( name );
+ Post_View * v = Img2Pos (theVeryNicePicture);
+ char name2[256];
+ strcpy(name2,name);
+ strcat(name2,".pos");
+ EndView (v,1,name2,name);
+}
+
+
diff --git a/Graphics/ReadImg.h b/Graphics/ReadImg.h
new file mode 100644
index 0000000000..23e37cce4c
--- /dev/null
+++ b/Graphics/ReadImg.h
@@ -0,0 +1,4 @@
+#ifndef _READ_IMG_
+#define _READ_IMG_
+void read_pnm (char *name);
+#endif
--
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