1 files changed, 82 insertions, 0 deletions
diff --git a/debian/fireflies/fireflies-2.08/libgfx/tests/t-img.cxx b/debian/fireflies/fireflies-2.08/libgfx/tests/t-img.cxx
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+++ b/debian/fireflies/fireflies-2.08/libgfx/tests/t-img.cxx
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+/************************************************************************
+
+  The images produced by this test are checkboard gradients.  They
+  ramp from black in the upper left corner to full color in the lower
+  right corner.
+
+  by Michael Garland, 1999.
+  
+  $Id: t-img.cxx 426 2004-09-27 04:34:55Z garland $
+
+ ************************************************************************/
+
+#include <gfx/gfx.h>
+#include <gfx/raster.h>
+
+static
+void grayscale_test()
+{
+    ByteRaster img(256, 256, 1);
+
+    int i, j, c;
+
+    for(i=0; i<img.height(); i++) for(j=0; j<img.width(); j++)
+    {
+	c = ((((i&0x8)==0)^((j&0x8))==0))*(i+j)/2;
+	img.pixel(j,i)[0] = c;
+    }
+    
+    write_pnm_image("chex1.pgm", img);
+    write_tiff_image("chex1.tif", img);
+    write_png_image("chex1.png", img);
+    write_jpeg_image("chex1.jpg", img);
+
+    ByteRaster *pgm = read_pnm_image("chex1.pgm");
+    ByteRaster *tif = read_tiff_image("chex1.tif");
+    ByteRaster *png = read_png_image("chex1.png");
+    ByteRaster *jpg = read_jpeg_image("chex1.jpg");
+
+    if( pgm )  write_pnm_image("chex1-dup.pgm", *pgm);
+    if( tif )  write_tiff_image("chex1-dup.tif", *tif);
+    if( png )  write_png_image("chex1-dup.png", *png);
+    if( jpg )  write_jpeg_image("chex1-dup.jpg", *jpg);
+}
+
+static
+void rgb_test()
+{
+    ByteRaster img(256, 256, 3);
+
+    int i, j, c;
+
+    for(i=0; i<img.height(); i++) for(j=0; j<img.width(); j++)
+    {
+	c = ((((i&0x8)==0)^((j&0x8))==0))*(i+j)/2;
+	img.pixel(j,i)[0] = c;
+	img.pixel(j,i)[1] = c/2;
+	img.pixel(j,i)[2] = c/4;
+    }
+
+    write_pnm_image("chex3.ppm", img);
+    write_tiff_image("chex3.tif", img);
+    write_png_image("chex3.png", img);
+    write_jpeg_image("chex3.jpg", img);
+
+    ByteRaster *ppm = read_pnm_image("chex3.ppm");
+    ByteRaster *tif = read_tiff_image("chex3.tif");
+    ByteRaster *png = read_png_image("chex3.png");
+    ByteRaster *jpg = read_jpeg_image("chex3.jpg");
+
+    if( ppm )  write_pnm_image("chex3-dup.ppm", *ppm);
+    if( tif )  write_tiff_image("chex3-dup.tif", *tif);
+    if( png )  write_png_image("chex3-dup.png", *png);
+    if( jpg )  write_jpeg_image("chex3-dup.jpg", *jpg);
+}
+
+int main()
+{
+    grayscale_test();
+    rgb_test();
+
+    return 0;
+}