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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 #####
# <pep8 compliant>
import bpy
import bmesh
from . import cad_module as cm
def add_line_to_bisection(self):
obj = bpy.context.object
me = obj.data
bm = bmesh.from_edit_mesh(me)
bm.verts.ensure_lookup_table()
bm.edges.ensure_lookup_table()
edges = [e for e in bm.edges if e.select and not e.hide]
if not len(edges) == 2:
msg = "select two coplanar non parallel edges"
self.report({"WARNING"}, msg)
return
[[v1, v2], [v3, v4]] = [[v.co for v in e.verts] for e in edges]
print('vectors found:\n', v1, '\n', v2, '\n', v3, '\n', v4)
dist1 = (v1 - v2).length
dist2 = (v3 - v4).length
bdist = min([dist1, dist2])
edge1 = (v1, v2)
edge2 = (v3, v4)
if not cm.test_coplanar(edge1, edge2):
msg = "edges must be coplanar non parallel edges"
self.report({"WARNING"}, msg)
return
# get pt and pick fartest vertex from (projected) intersections
pt = cm.get_intersection(edge1, edge2)
far1 = v2 if (v1 - pt).length < (v2 - pt).length else v1
far2 = v4 if (v3 - pt).length < (v4 - pt).length else v3
# print('intersection: ', pt)
dex1 = far1 - pt
dex2 = far2 - pt
dex1 = dex1 * (bdist / dex1.length)
dex2 = dex2 * (bdist / dex2.length)
pt2 = pt + (dex1).lerp(dex2, 0.5)
# print('bisector point:', pt2)
pt3 = pt2.lerp(pt, 2.0)
vec1 = bm.verts.new(pt2)
vec2 = bm.verts.new(pt)
vec3 = bm.verts.new(pt3)
bm.edges.new((vec1, vec2))
bm.edges.new((vec2, vec3))
bmesh.update_edit_mesh(me)
# print("done")
class TCLineOnBisection(bpy.types.Operator):
'''Generate the bisector of two selected edges'''
bl_idname = 'tinycad.linetobisect'
bl_label = 'BIX line to bisector'
bl_options = {'REGISTER', 'UNDO'}
@classmethod
def poll(cls, context):
obj = context.active_object
return all([obj is not None, obj.type == 'MESH', obj.mode == 'EDIT'])
def execute(self, context):
add_line_to_bisection(self)
return {'FINISHED'}
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