From ffdc7c08d4a4597191e2f2c190d4d2208ad750a3 Mon Sep 17 00:00:00 2001
From: Christophe Geuzaine <cgeuzaine@ulg.ac.be>
Date: Thu, 21 Dec 2000 08:03:43 +0000
Subject: [PATCH] *** empty log message ***
---
Graphics/gl2ppm.cpp | 37 +++++++++++++++++++++++++++++++++++++
Graphics/gl2ppm.h | 6 ++++++
2 files changed, 43 insertions(+)
create mode 100644 Graphics/gl2ppm.cpp
create mode 100644 Graphics/gl2ppm.h
diff --git a/Graphics/gl2ppm.cpp b/Graphics/gl2ppm.cpp
new file mode 100644
index 0000000000..99f29ad10f
--- /dev/null
+++ b/Graphics/gl2ppm.cpp
@@ -0,0 +1,37 @@
+
+#include "Gmsh.h"
+#include "GmshUI.h"
+
+void create_ppm(FILE *outfile, int width, int height){
+ unsigned char *red, *green, *blue;
+ register int x, y;
+ unsigned char r, g, b;
+
+ red = (unsigned char *)malloc(height*width*sizeof(unsigned char));
+ green = (unsigned char *)malloc(height*width*sizeof(unsigned char));
+ blue = (unsigned char *)malloc(height*width*sizeof(unsigned char));
+
+ glReadPixels(0,0,width,height,GL_RED,GL_UNSIGNED_BYTE,red);
+ glReadPixels(0,0,width,height,GL_GREEN,GL_UNSIGNED_BYTE,green);
+ glReadPixels(0,0,width,height,GL_BLUE,GL_UNSIGNED_BYTE,blue);
+
+ fprintf(outfile, "P6\n");
+ fprintf(outfile, "%d %d\n", width, height);
+ fprintf(outfile, "%d\n", 255);
+
+ for ( y = height-1; y >= 0; y-- ){
+ for ( x = 0; x < width; x++ ){
+ r = red[y*width+x];
+ g = green[y*width+x];
+ b = blue[y*width+x];
+ fwrite(&r, 1, 1, outfile);
+ fwrite(&g, 1, 1, outfile);
+ fwrite(&b, 1, 1, outfile);
+ }
+ }
+
+ Free(red);
+ Free(green);
+ Free(blue);
+}
+
diff --git a/Graphics/gl2ppm.h b/Graphics/gl2ppm.h
new file mode 100644
index 0000000000..47b88824d1
--- /dev/null
+++ b/Graphics/gl2ppm.h
@@ -0,0 +1,6 @@
+#ifndef _GL2PPM_H_
+#define _GL2PPM_H_
+
+void create_ppm(FILE *outfile, int width, int height);
+
+#endif
--
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