[freetype2] anuj-distance-field 538cf0f 30/95: * src/sdf/ftsdf.c (MAX_NEWTON_DIVISIONS): Renamed to avoid confusion.

[Anuj Verma]

branch: anuj-distance-field
commit 538cf0f1fd663623d53d8457136aa4c9c9c18fdf
Author: Anuj Verma <anujv@iitbhilai.ac.in>
Commit: Anuj Verma <anujv@iitbhilai.ac.in>

    * src/sdf/ftsdf.c (MAX_NEWTON_DIVISIONS): Renamed to avoid confusion.
---
 [GSoC]ChangeLog |  5 +++++
 src/sdf/ftsdf.c | 13 ++++++++++---
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/[GSoC]ChangeLog b/[GSoC]ChangeLog
index fe90c78..632510a 100644
--- a/[GSoC]ChangeLog
+++ b/[GSoC]ChangeLog
@@ -1,3 +1,8 @@
+2020-07-03  Anuj Verma  <anujv@iitbhilai.ac.in>
+
+       * src/sdf/ftsdf.c (MAX_NEWTON_ITERATION => MAX_NEWTON_DIVISIONS):
+         Renamed to avoid confusion.
+
 2020-07-02  Anuj Verma  <anujv@iitbhilai.ac.in>
 
        [sdf] Added Newton's method for shortest distance
diff --git a/src/sdf/ftsdf.c b/src/sdf/ftsdf.c
index 8ceb7dd..b2ede4d 100644
--- a/src/sdf/ftsdf.c
+++ b/src/sdf/ftsdf.c
@@ -31,7 +31,14 @@
   #  define USE_NEWTON_FOR_CONIC 1
   #endif
 
-  #define MAX_NEWTON_ITERATION 4
+  /* `MAX_NEWTON_DIVISIONS' is the number of intervals the bezier curve   */
+  /* is sampled and checked for shortest distance.                        */
+  #define MAX_NEWTON_DIVISIONS 4
+
+  /* `MAX_NEWTON_STEPS' is the number of steps of Newton's iterations in  */
+  /* each interval of the bezier curve. Basically for each division we    */
+  /* run the Newton's approximation (i.e. x -= Q( t ) / Q'( t )) to get   */
+  /* the shortest distance.                                               */
   #define MAX_NEWTON_STEPS     4
 
   /**************************************************************************
@@ -1507,9 +1514,9 @@
     cC.y = p0.y;
 
     /* do newton's iterations */
-    for ( iterations = 0; iterations <= MAX_NEWTON_ITERATION; iterations++ )
+    for ( iterations = 0; iterations <= MAX_NEWTON_DIVISIONS; iterations++ )
     {
-      FT_16D16  factor = FT_INT_16D16( iterations ) / MAX_NEWTON_ITERATION;
+      FT_16D16  factor = FT_INT_16D16( iterations ) / MAX_NEWTON_DIVISIONS;
       FT_16D16  factor2;
       FT_16D16  length;