Deal with blank tiles by returning a 1x1 blank pixel rather than a bunch of invalid values.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3965 542714f4-19e9-0310-aa3c-eee0fc999fb1
2006-03-21 02:32:27 +00:00
parent d94866f3cf
commit 95ff914ab6
1 changed files with 12 additions and 4 deletions
@@ -560,10 +560,18 @@ public class ImageUtil
        }

        // fill in the dimensions
-        tbounds.x = minx;
-        tbounds.y = firstrow;
-        tbounds.width = maxx - minx + 1;
-        tbounds.height = lastrow - firstrow + 1;
+        if (firstrow != -1) {
+            tbounds.x = minx;
+            tbounds.y = firstrow;
+            tbounds.width = maxx - minx + 1;
+            tbounds.height = lastrow - firstrow + 1;
+        } else {
+            // Entirely blank image.  Return 1x1 blank image.
+            tbounds.x = 0;
+            tbounds.y = 0;
+            tbounds.width = 1;
+            tbounds.height = 1;
+        }
    }

    /**