From e8906f5254cdedb0dcbfab31a800ba1f9ed860f5 Mon Sep 17 00:00:00 2001
From: Sergey Sharybin <sergey.vfx@gmail.com>
Date: Tue, 15 Nov 2011 06:37:47 +0000
Subject: Fix #29253: 3D Manipulator: "Active Element" not supported for curves

This funcitonality simply wasn't implemented for curves yet, implemented it now.
---
 source/blender/editors/curve/editcurve.c | 55 ++++++++++++++++++++++++--------
 1 file changed, 42 insertions(+), 13 deletions(-)

(limited to 'source/blender/editors/curve')

diff --git a/source/blender/editors/curve/editcurve.c b/source/blender/editors/curve/editcurve.c
index 1f6673137a1..1415b8965fe 100644
--- a/source/blender/editors/curve/editcurve.c
+++ b/source/blender/editors/curve/editcurve.c
@@ -5468,6 +5468,24 @@ static int point_on_nurb(Nurb *nu, void *point)
 	}
 }
 
+static Nurb *get_lastsel_nurb(Curve *cu)
+{
+	ListBase *nubase= curve_editnurbs(cu);
+	Nurb *nu= nubase->first;
+
+	if(!cu->lastsel)
+		return NULL;
+
+	while (nu) {
+		if (point_on_nurb(nu, cu->lastsel))
+			return nu;
+
+		nu= nu->next;
+	}
+
+	return NULL;
+}
+
 static void select_nth_bezt(Nurb *nu, BezTriple *bezt, int nth)
 {
 	int a, start;
@@ -5517,21 +5535,11 @@ static void select_nth_bp(Nurb *nu, BPoint *bp, int nth)
 int CU_select_nth(Object *obedit, int nth)
 {
 	Curve *cu= (Curve*)obedit->data;
-	ListBase *nubase= curve_editnurbs(cu);
 	Nurb *nu;
-	int ok=0;
-
-	/* Search nurb to which selected point belongs to */
-	nu= nubase->first;
-	while (nu) {
-		if (point_on_nurb(nu, cu->lastsel)) {
-			ok= 1;
-			break;
-		}
-		nu= nu->next;
-	}
 
-	if (!ok) return 0;
+	nu= get_lastsel_nurb(cu);
+	if (!nu)
+		return 0;
 
 	if (nu->bezt) {
 		select_nth_bezt(nu, cu->lastsel, nth);
@@ -7070,3 +7078,24 @@ void ED_curve_bpcpy(EditNurb *editnurb, BPoint *dst, BPoint *src, int count)
 	memcpy(dst, src, count*sizeof(BPoint));
 	keyIndex_updateBP(editnurb, src, dst, count);
 }
+
+int ED_curve_actSelection(Curve *cu, float center[3])
+{
+	Nurb *nu= get_lastsel_nurb(cu);
+
+	if(!nu)
+		return 0;
+
+	if(nu->bezt) {
+		BezTriple *bezt= cu->lastsel;
+
+		copy_v3_v3(center, bezt->vec[1]);
+	}
+	else {
+		BPoint *bp= cu->lastsel;
+
+		copy_v3_v3(center, bp->vec);
+	}
+
+	return 1;
+}
-- 
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