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# ##### 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
'''
bl_info = {
"name": "Torus Knots",
"author": "testscreenings",
"version": (0, 1),
"blender": (2, 59, 0),
"location": "View3D > Add > Curve",
"description": "Adds many types of (torus) knots",
"warning": "",
"wiki_url": "http://wiki.blender.org/index.php/Extensions:2.6/Py/"
"Scripts/Curve/Torus_Knot",
"category": "Add Curve"}
'''
##------------------------------------------------------------
#### import modules
import bpy
from bpy.props import *
from math import sin, cos, pi
from bpy_extras.object_utils import AddObjectHelper, object_data_add
########################################################################
####################### Knot Definitions ###############################
########################################################################
def Torus_Knot(self):
p = self.torus_p
q = self.torus_q
w = self.torus_w
res = self.torus_res
h = self.torus_h
u = self.torus_u
v = self.torus_v
rounds = self.torus_rounds
newPoints = []
angle = 2*rounds
step = angle/(res-1)
scale = h
height = w
for i in range(res-1):
t = ( i*step*pi)
x = (2 * scale + cos((q*t)/p*v)) * cos(t * u)
y = (2 * scale + cos((q*t)/p*v)) * sin(t * u)
z = sin(q*t/p) * height
newPoints.extend([x,y,z,1])
return newPoints
##------------------------------------------------------------
# Main Function
def create_torus_knot(self, context):
verts = Torus_Knot(self)
curve_data = bpy.data.curves.new(name='Torus Knot', type='CURVE')
spline = curve_data.splines.new(type='NURBS')
spline.points.add(int(len(verts)*0.25 - 1))
spline.points.foreach_set('co', verts)
spline.use_endpoint_u = True
spline.use_cyclic_u = True
spline.order_u = 4
curve_data.dimensions = '3D'
if self.geo_surf:
curve_data.bevel_depth = self.geo_bDepth
curve_data.bevel_resolution = self.geo_bRes
curve_data.fill_mode = 'FULL'
curve_data.extrude = self.geo_extrude
#curve_data.offset = self.geo_width # removed, somehow screws things up all of a sudden
curve_data.resolution_u = self.geo_res
new_obj = object_data_add(context, curve_data, operator=self)
class torus_knot_plus(bpy.types.Operator, AddObjectHelper):
""""""
bl_idname = "curve.torus_knot_plus"
bl_label = "Torus Knot +"
bl_options = {'REGISTER', 'UNDO', 'PRESET'}
bl_description = "adds many types of knots"
#### general options
options_plus = BoolProperty(name="plus options",
default=False,
description="Show more options (the plus part)")
#### GEO Options
geo_surf = BoolProperty(name="Surface",
default=True)
geo_bDepth = FloatProperty(name="bevel",
default=0.08,
min=0, soft_min=0)
geo_bRes = IntProperty(name="bevel res",
default=2,
min=0, soft_min=0,
max=4, soft_max=4)
geo_extrude = FloatProperty(name="extrude",
default=0.0,
min=0, soft_min=0)
geo_res = IntProperty(name="resolution",
default=12,
min=1, soft_min=1)
#### Parameters
torus_res = IntProperty(name="Resoulution",
default=100,
min=3, soft_min=3,
description='Resolution, Number of controlverticies')
torus_p = IntProperty(name="p",
default=2,
min=1, soft_min=1,
#max=1, soft_max=1,
description="p")
torus_q = IntProperty(name="q",
default=3,
min=1, soft_min=1,
#max=1, soft_max=1,
description="q")
torus_w = FloatProperty(name="Height",
default=1,
#min=0, soft_min=0,
#max=1, soft_max=1,
description="Height in Z")
torus_h = FloatProperty(name="Scale",
default=1,
#min=0, soft_min=0,
#max=1, soft_max=1,
description="Scale, in XY")
torus_u = IntProperty(name="u",
default=1,
min=1, soft_min=1,
#max=1, soft_max=1,
description="u")
torus_v = IntProperty(name="v",
default=1,
min=1, soft_min=1,
#max=1, soft_max=1,
description="v")
torus_rounds = IntProperty(name="Rounds",
default=2,
min=1, soft_min=1,
#max=1, soft_max=1,
description="Rounds")
##### DRAW #####
def draw(self, context):
layout = self.layout
# general options
layout.label(text="Torus Knot Parameters:")
# Parameters
box = layout.box()
box.prop(self, 'torus_res')
box.prop(self, 'torus_w')
box.prop(self, 'torus_h')
box.prop(self, 'torus_p')
box.prop(self, 'torus_q')
box.prop(self, 'options_plus')
if self.options_plus:
box.prop(self, 'torus_u')
box.prop(self, 'torus_v')
box.prop(self, 'torus_rounds')
# surface Options
col = layout.column()
col.label(text="Geometry Options:")
box = layout.box()
box.prop(self, 'geo_surf')
if self.geo_surf:
box.prop(self, 'geo_bDepth')
box.prop(self, 'geo_bRes')
box.prop(self, 'geo_extrude')
box.prop(self, 'geo_res')
col = layout.column()
col.prop(self, 'location')
col.prop(self, 'rotation')
##### POLL #####
@classmethod
def poll(cls, context):
return context.scene != None
##### EXECUTE #####
def execute(self, context):
# turn off undo
undo = bpy.context.user_preferences.edit.use_global_undo
bpy.context.user_preferences.edit.use_global_undo = False
if not self.options_plus:
self.torus_rounds = self.torus_p
#recoded for add_utils
create_torus_knot(self, context)
# restore pre operator undo state
bpy.context.user_preferences.edit.use_global_undo = undo
return {'FINISHED'}
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