Use curve radius for paths

- use_radius option, off by default for 2.4x files, on by default on new curves.
- curve deform modifiers (think tentacles)
- follow path (parent mode and constraint)
- curve guides
- added back Alt+S to scale point radius
- Mat3Scale and Mat4Scale arithb.c functions to make a new uniform scale matrix.

- TODO, effectors, looks like they have no way to scale from the radius yet.

1 files changed, 7 insertions, 2 deletions

diff --git a/source/blender/makesrna/intern/rna_constraint.c b/source/blender/makesrna/intern/rna_constraint.c
index 83f3042d8ee..815023ee315 100644
--- a/source/blender/makesrna/intern/rna_constraint.c
+++ b/source/blender/makesrna/intern/rna_constraint.c
@@ -893,16 +893,21 @@ static void rna_def_constraint_follow_path(BlenderRNA *brna)
 	RNA_def_property_ui_text(prop, "Up Axis", "Axis that points upward.");
 	RNA_def_property_update(prop, NC_OBJECT|ND_CONSTRAINT, "rna_Constraint_update");
 
-	prop= RNA_def_property(srna, "curve_follow", PROP_BOOLEAN, PROP_NONE);
+	prop= RNA_def_property(srna, "use_curve_follow", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "followflag", FOLLOWPATH_FOLLOW);
 	RNA_def_property_ui_text(prop, "Follow Curve", "Object will follow the heading and banking of the curve.");
 	RNA_def_property_update(prop, NC_OBJECT|ND_CONSTRAINT, "rna_Constraint_update");
 	
 		// TODO: do we need to do some special trickery to get offset sane for this?
-	prop= RNA_def_property(srna, "fixed_position", PROP_BOOLEAN, PROP_NONE);
+	prop= RNA_def_property(srna, "use_fixed_position", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "followflag", FOLLOWPATH_STATIC);
 	RNA_def_property_ui_text(prop, "Fixed Position", "Object will stay locked to a single point somewhere along the length of the curve regardless of time.");
 	RNA_def_property_update(prop, NC_OBJECT|ND_CONSTRAINT, "rna_Constraint_update");
+
+	prop= RNA_def_property(srna, "use_curve_radius", PROP_BOOLEAN, PROP_NONE);
+	RNA_def_property_boolean_sdna(prop, NULL, "followflag", FOLLOWPATH_RADIUS);
+	RNA_def_property_ui_text(prop, "Curve Radius", "Objects scale by the curve radius.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_CONSTRAINT, "rna_Constraint_update");
 }
 
 static void rna_def_constraint_stretch_to(BlenderRNA *brna)