Index: source/blender/modifiers/intern/MOD_simpledeform.c
===================================================================
--- source/blender/modifiers/intern/MOD_simpledeform.c	(revision 32395)
+++ source/blender/modifiers/intern/MOD_simpledeform.c	(working copy)
@@ -77,6 +77,28 @@
 	}
 }
 
+
+static void simpleDeform_to_sphere(const float factor, const float dcut[3], float *co)
+{
+	float x = co[0], y = co[1], z = co[2];
+	float r = sqrt(x*x+y*y+z*z);
+	if(r != 0.0f )
+	{	
+	co[0] =x+factor*(x/r-x); 
+	co[1] =y+factor*(y/r-y);
+	co[2] =z+factor*(z/r-z);
+	}
+
+	if(dcut)
+	{
+		co[0] += dcut[0];
+		co[1] += dcut[1];
+		co[2] += dcut[2];
+	}
+}
+
+
+
 static void simpleDeform_stretch(const float factor, const float dcut[3], float *co)
 {
 	float x = co[0], y = co[1], z = co[2];
@@ -223,10 +245,11 @@
 
 	switch(smd->mode)
 	{
-		case MOD_SIMPLEDEFORM_MODE_TWIST: 	simpleDeform_callback = simpleDeform_twist;		break;
-		case MOD_SIMPLEDEFORM_MODE_BEND:	simpleDeform_callback = simpleDeform_bend;		break;
-		case MOD_SIMPLEDEFORM_MODE_TAPER:	simpleDeform_callback = simpleDeform_taper;		break;
-		case MOD_SIMPLEDEFORM_MODE_STRETCH:	simpleDeform_callback = simpleDeform_stretch;	break;
+		case MOD_SIMPLEDEFORM_MODE_TWIST:		simpleDeform_callback = simpleDeform_twist;		break;
+		case MOD_SIMPLEDEFORM_MODE_BEND:		simpleDeform_callback = simpleDeform_bend;		break;
+		case MOD_SIMPLEDEFORM_MODE_TAPER:		simpleDeform_callback = simpleDeform_taper;		break;
+		case MOD_SIMPLEDEFORM_MODE_STRETCH:		simpleDeform_callback = simpleDeform_stretch;	break;
+		case MOD_SIMPLEDEFORM_MODE_TOSPHERE:	simpleDeform_callback = simpleDeform_to_sphere;	break;	
 		default:
 			return;	//No simpledeform mode?
 	}
Index: source/blender/makesdna/DNA_modifier_types.h
===================================================================
--- source/blender/makesdna/DNA_modifier_types.h	(revision 32395)
+++ source/blender/makesdna/DNA_modifier_types.h	(working copy)
@@ -676,6 +676,7 @@
 #define MOD_SIMPLEDEFORM_MODE_BEND		2
 #define MOD_SIMPLEDEFORM_MODE_TAPER		3
 #define MOD_SIMPLEDEFORM_MODE_STRETCH	4
+#define MOD_SIMPLEDEFORM_MODE_TOSPHERE  5
 
 #define MOD_SIMPLEDEFORM_LOCK_AXIS_X			(1<<0)
 #define MOD_SIMPLEDEFORM_LOCK_AXIS_Y			(1<<1)
Index: source/blender/makesrna/intern/rna_modifier.c
===================================================================
--- source/blender/makesrna/intern/rna_modifier.c	(revision 32395)
+++ source/blender/makesrna/intern/rna_modifier.c	(working copy)
@@ -2021,6 +2021,7 @@
 		{MOD_SIMPLEDEFORM_MODE_BEND, "BEND", 0, "Bend", ""},
 		{MOD_SIMPLEDEFORM_MODE_TAPER, "TAPER", 0, "Taper", ""},
 		{MOD_SIMPLEDEFORM_MODE_STRETCH, "STRETCH", 0, "Stretch", ""},
+		{MOD_SIMPLEDEFORM_MODE_TOSPHERE, "TO-SPHERE", 0, "To Sphere", ""},
 		{0, NULL, 0, NULL, NULL}};
 
 	srna= RNA_def_struct(brna, "SimpleDeformModifier", "Modifier");