ref: 87360a78f3fb20abd34c29d1b363f6e42f57904c
parent: f8555b5d8cdb76134175fc3260e06c8805ede867
author: Werner Lemberg <[email protected]>
date: Fri Apr 4 20:08:52 EDT 2014
[aflatin] Improve comment.
--- a/src/autofit/aflatin.c
+++ b/src/autofit/aflatin.c
@@ -1355,6 +1355,7 @@
if ( len_threshold == 0 )
len_threshold = 1;
+ /* a heuristic value to weight lengths */
len_score = AF_LATIN_CONSTANT( hints->metrics, 6000 );
/* now compare each segment to the others */
@@ -1389,15 +1390,18 @@
max = seg2->max_coord;
/* compute maximum coordinate difference of the two segments */
+ /* (this is, how much they overlap) */
len = max - min;
if ( len >= len_threshold )
{- /* small coordinate differences cause a higher score, and */
- /* segments with a greater distance cause a higher score also */
+ /* the score is the sum of two values indicating the */
+ /* `quality' of a fit, measured along the segments' main */
+ /* axis (`len_score / len') and orthogonal to it (`dist'): */
+ /* smaller overlappings cause a higher score, and segments */
+ /* with a greater distance cause a higher score also */
score = dist + len_score / len;
/* and we search for the smallest score */
- /* of the sum of the two values */
if ( score < seg1->score )
{seg1->score = score;