[Bf-blender-cvs] [837c4c5] master: Cleanup: const args for curve handle calculation

[Campbell Barton]

Commit: 837c4c5d476911e3d6b114aa587cb84a1e15e02a
Author: Campbell Barton
Date:   Thu Feb 25 11:02:46 2016 +1100
Branches: master
https://developer.blender.org/rB837c4c5d476911e3d6b114aa587cb84a1e15e02a

Cleanup: const args for curve handle calculation

===================================================================

M	source/blender/blenkernel/intern/colortools.c
M	source/blender/blenkernel/intern/curve.c

===================================================================

diff --git a/source/blender/blenkernel/intern/colortools.c b/source/blender/blenkernel/intern/colortools.c
index 32fb6af..bac59c8 100644
--- a/source/blender/blenkernel/intern/colortools.c
+++ b/source/blender/blenkernel/intern/colortools.c
@@ -412,13 +412,16 @@ void curvemap_sethandle(CurveMap *cuma, int type)
 /**
  * reduced copy of #calchandleNurb_intern code in curve.c
  */
-static void calchandle_curvemap(BezTriple *bezt, BezTriple *prev, BezTriple *next, int UNUSED(mode))
+static void calchandle_curvemap(
+        BezTriple *bezt, const BezTriple *prev, const BezTriple *next)
 {
 	/* defines to avoid confusion */
 #define p2_h1 ((p2) - 3)
 #define p2_h2 ((p2) + 3)
 
-	float *p1, *p2, *p3, pt[3];
+	const float *p1, *p3;
+	float *p2;
+	float pt[3];
 	float len, len_a, len_b;
 	float dvec_a[2], dvec_b[2];
 
@@ -546,13 +549,11 @@ static void curvemap_make_table(CurveMap *cuma, const rctf *clipr)
 			bezt[a].h1 = bezt[a].h2 = HD_AUTO;
 	}
 	
+	const BezTriple *bezt_prev = NULL;
 	for (a = 0; a < cuma->totpoint; a++) {
-		if (a == 0)
-			calchandle_curvemap(bezt, NULL, bezt + 1, 0);
-		else if (a == cuma->totpoint - 1)
-			calchandle_curvemap(bezt + a, bezt + a - 1, NULL, 0);
-		else
-			calchandle_curvemap(bezt + a, bezt + a - 1, bezt + a + 1, 0);
+		const BezTriple *bezt_next = (a != cuma->totpoint - 1) ? &bezt[a + 1] : NULL;
+		calchandle_curvemap(&bezt[a], bezt_prev, bezt_next);
+		bezt_prev = &bezt[a];
 	}
 	
 	/* first and last handle need correction, instead of pointing to center of next/prev, 
diff --git a/source/blender/blenkernel/intern/curve.c b/source/blender/blenkernel/intern/curve.c
index 79199f8..3329d3a 100644
--- a/source/blender/blenkernel/intern/curve.c
+++ b/source/blender/blenkernel/intern/curve.c
@@ -3120,14 +3120,17 @@ void BKE_curve_bevelList_make(Object *ob, ListBase *nurbs, bool for_render)
 
 /* ****************** HANDLES ************** */
 
-static void calchandleNurb_intern(BezTriple *bezt, BezTriple *prev, BezTriple *next,
-                                  bool is_fcurve, bool skip_align)
+static void calchandleNurb_intern(
+        BezTriple *bezt, const BezTriple *prev, const BezTriple *next,
+        bool is_fcurve, bool skip_align)
 {
 	/* defines to avoid confusion */
 #define p2_h1 ((p2) - 3)
 #define p2_h2 ((p2) + 3)
 
-	float *p1, *p2, *p3, pt[3];
+	const float *p1, *p3;
+	float *p2;
+	float pt[3];
 	float dvec_a[3], dvec_b[3];
 	float len, len_a, len_b;
 	float len_ratio;