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Curve extrude, sample code
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Authored by Campbell Barton (campbellbarton) on Jan 12 2016, 1:53 PM.
import bpy
import bmesh
from math import pi,sin,sqrt,radians,degrees
from mathutils import Vector
bl_info = {
"name": "Curve extrude",
"author": "Juha Wiiala",
"version": (0, 1, 0),
"blender": (2, 76, 0),
"location": "Curve",
"description": "Alt+D to extrude two curve points",
"warning": "beta",
"wiki_url": "",
"category": "",
}
# store keymaps here to access after registration
addon_keymaps = []
class CurveExtrudePoints(bpy.types.Operator):
bl_idname = "curve.extrudepoints"
bl_label = "Extrude curve points"
bl_options = {'REGISTER', 'UNDO'} # enable undo for the operator.
def execute(self, context):
print ("curve extrude execute")
return {'FINISHED'}
def invoke(self, context, value):
o = context.object
#curve bezier point coord
#vco = [p.co for x in o.data.splines for p in x.bezier_points if p.select_control_point]
#points = [p for x in o.data.splines for p in x.bezier_points if p.select_control_point]
ci = [i for x in o.data.splines for i, p in enumerate(x.bezier_points) if p.select_control_point]
print (ci)
if len(ci) == 2:
#first and last points are selected
if ci[0] == 0 and ci[1] == len(o.data.splines.active.bezier_points)-1:
print ("first and last points are selected")
bpy.ops.curve.subdivide(number_cuts=2)
o.data.splines[0].bezier_points[ci[0]].select_control_point = False
o.data.splines[0].bezier_points[-3].select_control_point = False
o.data.splines[0].bezier_points[-1].co = o.data.splines[0].bezier_points[ci[0]].co
o.data.splines[0].bezier_points[-2].co = o.data.splines[0].bezier_points[-3].co
else:
bpy.ops.curve.subdivide(number_cuts=2)
o.data.splines[0].bezier_points[ci[0]].select_control_point = False
o.data.splines[0].bezier_points[ci[1]+2].select_control_point = False
o.data.splines[0].bezier_points[ci[0]+1].co = o.data.splines[0].bezier_points[ci[0]].co
o.data.splines[0].bezier_points[ci[0]+2].co = o.data.splines[0].bezier_points[ci[1]+2].co
elif len(ci) > 2:
print ("more than 2 points selected")
bpy.ops.curve.select_all(action='DESELECT')
o.data.splines[0].bezier_points[ci[0]].select_control_point = True
o.data.splines[0].bezier_points[ci[1]].select_control_point = True
bpy.ops.curve.subdivide(number_cuts=1)
bpy.ops.curve.select_all(action='DESELECT')
o.data.splines[0].bezier_points[ci[-1]].select_control_point = True
o.data.splines[0].bezier_points[ci[-1]+1].select_control_point = True
bpy.ops.curve.subdivide(number_cuts=1)
bpy.ops.curve.select_all(action='DESELECT')
o.data.splines[0].bezier_points[ci[0]+1].co = o.data.splines[0].bezier_points[ci[0]].co
o.data.splines[0].bezier_points[ci[-1]+1].co = o.data.splines[0].bezier_points[ci[-1]+2].co
for i in range(ci[0]+1,ci[-1]+2):
o.data.splines[0].bezier_points[i].select_control_point = True
#o.data.splines[0].bezier_points[i].select_left_handle = False
#o.data.splines[0].bezier_points[i].select_right_handle = False
bpy.ops.transform.translate('INVOKE_DEFAULT')
return {'FINISHED'}
#curve extrude
#store selected points and their index
#SUBDIVIDE part
#deselect all
#select 2 points from the beginning and from the end
#subdivide 1
def register():
bpy.utils.register_module(__name__)
# handle the keymap
wm = bpy.context.window_manager
km = wm.keyconfigs.addon.keymaps.new(name='Curve', space_type='EMPTY', region_type='WINDOW')
kmi = km.keymap_items.new(CurveExtrudePoints.bl_idname, 'D', 'PRESS')
addon_keymaps.append(km)
def unregister():
bpy.utils.unregister_module(__name__)
# handle the keymap
wm = bpy.context.window_manager
for km in addon_keymaps:
wm.keyconfigs.addon.keymaps.remove(km)
# clear the list
addon_keymaps.clear()
if __name__ == "__main__":
try:
unregister()
except:
pass
register()
# to create curve points
#o.data.splines[0].bezier_points.add(1)
#bpy.ops.curve.make_segment()
#delete curve segment
#bpy.ops.curve.delete(type='SEGMENT')

Event Timeline

Campbell Barton (campbellbarton) edited the content of this paste. (Show Details)Jan 12 2016, 1:53 PM
Campbell Barton (campbellbarton) changed the title of this paste from untitled to Curve extrude, sample code.
Campbell Barton (campbellbarton) updated the paste's language from autodetect to python.
Campbell Barton (campbellbarton) added a project: Good First Issue.
Campbell Barton (campbellbarton) mentioned this in T47169: Improve Curve extrude.
• spam (sportsyearly1) mentioned this in • spam (sportsyearly1).Dec 28 2022, 7:37 PM