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'''
by Yann Bertrand, january 2014.
BEGIN GPL LICENSE BLOCK
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
END GPL LICENCE BLOCK
'''
bl_info = {
"name": "Curve Outline",
"description": "creates an Outline",
"category": "Object",
"author": "Yann Bertrand (jimflim)",
"version": (0, 4),
"blender": (2, 69, 0),
}
import bpy
from mathutils import Vector
from mathutils.geometry import intersect_line_line
def createOutline(curve, outline):
for spline in curve.data.splines[:]:
p = spline.bezier_points
out = []
n = ((p[0].handle_right-p[0].co).normalized()-(p[0].handle_left-p[0].co).normalized()).normalized()
n = Vector((-n[1], n[0], n[2]))
o = p[0].co+outline*n
out.append(o)
for i in range(1,len(p)):
n = ((p[i].handle_right-p[i].co).normalized()-(p[i].handle_left-p[i].co).normalized()).normalized()
n = Vector((-n[1], n[0], n[2]))
o = intersect_line_line(out[-1], (out[-1]+p[i].co-p[i-1].co), p[i].co, p[i].co+n)[0]
out.append(o)
curve.data.splines.new('BEZIER')
if spline.use_cyclic_u:
curve.data.splines[-1].use_cyclic_u = True
p_out = curve.data.splines[-1].bezier_points
p_out.add(len(out)-1)
for i in range(len(out)):
p_out[i].handle_left_type = 'FREE'
p_out[i].handle_right_type = 'FREE'
p_out[i].co = out[i]
if i<len(out)-1:
l = (p[i+1].co-p[i].co).length
l2 = (out[i]-out[i+1]).length
if i==0:
p_out[i].handle_left = out[i] + ((p[i].handle_left-p[i].co)*l2/l)
if i<len(out)-1:
p_out[i+1].handle_left = out[i+1] + ((p[i+1].handle_left-p[i+1].co)*l2/l)
p_out[i].handle_right = out[i] + ((p[i].handle_right-p[i].co)*l2/l)
for i in range(len(p)):
p_out[i].handle_left_type = p[i].handle_left_type
p_out[i].handle_right_type = p[i].handle_right_type
return
class CurveOutline(bpy.types.Operator):
"""Curve Outliner"""
bl_idname = "object._curve_outline"
bl_label = "Create Outline"
bl_options = {'REGISTER', 'UNDO'}
outline: bpy.props.FloatProperty(name="Amount", default=0.1)
@classmethod
def poll(cls, context):
return (context.object is not None and
context.object.type == 'CURVE')
def execute(self, context):
createOutline(context.object, self.outline)
return {'FINISHED'}
def invoke(self, context, event):
return context.window_manager.invoke_props_popup(self, event)
def menu_func(self, context):
self.layout.operator(CurveOutline.bl_idname)
def register():
bpy.utils.register_class(CurveOutline)
def unregister():
bpy.utils.unregister_class(CurveOutline)
if __name__ == "__main__":
register()
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