* img2rubik.c: improve stability by clipping t.

git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2734 92316355-f0b4-4df1-b90c-862c8a59935f

examples/img2rubik.c

@@ -422,6 +422,9 @@ int main(int argc, char *argv[])
             double yb = rgbhull->pts[slice][(n + 1) % count][Y];
             double t = (xp * (yb - ya) - yp * (xb - xa)) / (xa * yb - xb * ya);
 
+            if(t > 1.0)
+                t = 1.0;
+
             debug("    best RGB %g (%g,%g) (%g,%g)\n", t, xa, ya, xb, yb);
 
             /* 2. apply the excentricity in reduced space. */