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# SPDX-License-Identifier: GPL-2.0-or-later
#
# ----------------------------------------------------------
# Author: Zeffii
# Modified by: Alan Odom (Clockmender) & Rune Morling (ermo)
# ----------------------------------------------------------
#
#
import bpy
import bmesh
from . import pdt_cad_module as cm
from .pdt_msg_strings import (
PDT_ERR_2CPNPE,
PDT_ERR_NCEDGES,
PDT_ERR_EDOB_MODE,
)
from .pdt_functions import debug, oops
def add_line_to_bisection(context):
"""Computes Bisector of 2 Co-Planar Edges.
Args:
context: Blender bpy.context instance
Returns:
Nothing.
"""
obj = context.object
if all([bool(obj), obj.type == "MESH", obj.mode == "EDIT"]):
pg = context.scene.pdt_pg
obj_data = obj.data
bm = bmesh.from_edit_mesh(obj_data)
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:
pg.error = f"{PDT_ERR_2CPNPE}"
context.window_manager.popup_menu(oops, title="Error", icon="ERROR")
return
[[vector_a, vector_b], [vector_c, vector_d]] = [[v.co for v in e.verts] for e in edges]
debug(f"vectors found:\n {vector_a}\n {vector_b}\n {vector_c}\n {vector_d}")
dist1 = (vector_a - vector_b).length
dist2 = (vector_c - vector_d).length
bdist = min([dist1, dist2])
edge1 = (vector_a, vector_b)
edge2 = (vector_c, vector_d)
if not cm.test_coplanar(edge1, edge2):
pg.error = PDT_ERR_NCEDGES
context.window_manager.popup_menu(oops, title="Error", icon="ERROR")
return
# get intersect_point and pick farthest vertex from (projected) intersections
intersect_point = cm.get_intersection(edge1, edge2)
far1 = (
vector_b
if (vector_a - intersect_point).length < (vector_b - intersect_point).length
else vector_a
)
far2 = (
vector_d
if (vector_c - intersect_point).length < (vector_d - intersect_point).length
else vector_c
)
dex1 = far1 - intersect_point
dex2 = far2 - intersect_point
dex1 = dex1 * (bdist / dex1.length)
dex2 = dex2 * (bdist / dex2.length)
intersect_point2 = intersect_point + (dex1).lerp(dex2, 0.5)
intersect_point3 = intersect_point2.lerp(intersect_point, 2.0)
vec1 = bm.verts.new(intersect_point2)
vec2 = bm.verts.new(intersect_point)
vec3 = bm.verts.new(intersect_point3)
bm.edges.new((vec1, vec2))
bm.edges.new((vec2, vec3))
bmesh.ops.remove_doubles(bm, verts=bm.verts, dist=0.0001)
bmesh.update_edit_mesh(obj_data)
else:
pg.error = f"{PDT_ERR_EDOB_MODE},{obj.mode})"
context.window_manager.popup_menu(oops, title="Error", icon="ERROR")
return
class PDT_OT_LineOnBisection(bpy.types.Operator):
"""Create Bisector between 2 Selected Edges"""
bl_idname = "pdt.linetobisect"
bl_label = "Add Edges Bisector"
bl_options = {"REGISTER", "UNDO"}
@classmethod
def poll(cls, context):
"""Only allow operation on a mesh object in EDIT mode.
Args:
context: Blender bpy.context instance.
Returns:
Boolean.
"""
obj = context.active_object
if obj is None:
return False
return all([obj is not None, obj.type == "MESH", obj.mode == "EDIT"])
def execute(self, context):
"""Computes Bisector of 2 Co-Planar Edges.
Note:
Requires an Active Object
Active Object must be Mesh type
Active Object must be in Edit Mode.
Args:
context: Blender bpy.context instance.
Returns:
Status Set.
"""
pg = context.scene.pdt_pg
pg.command = f"bis"
return {"FINISHED"}
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