Change data type of computed heightmap arrays to signed integer to avoid unsigned overflow.

Code that works with heightmaps such as filters/smooth.py will subtract two heights expecting to get a negative integer. Getting a very large positive one usually causes an error, so make sure signed int arithmetic gets used.
2012-10-17 12:19:01 -10:00 · 2012-10-17 12:19:01 -10:00 · fde247b651
commit fde247b651
parent 14967d46da
1 changed files with 1 additions and 1 deletions
--- a/level.py
+++ b/level.py
@ -50,7 +50,7 @@ def extractHeights(array):
    # from each column.

    w, h = array.shape[:2]
-    heightMap = zeros((w, h), 'uint16')
+    heightMap = zeros((w, h), 'int16')

    heights = argmax((array > 0)[..., ::-1], 2)
    heights = array.shape[2] - heights