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# SPDX-License-Identifier: GPL-2.0-or-later
# <pep8 compliant>
#
# ----------------------------------------------------------
# Author: Zeffii
# Modified by: Alan Odom (Clockmender) & Rune Morling (ermo)
# ----------------------------------------------------------
#
#
import bpy
import bmesh
from mathutils.geometry import intersect_line_plane
from .pdt_msg_strings import (
PDT_ERR_NOINT,
PDT_ERR_EDOB_MODE,
PDT_ERR_SEL_1_E_1_F,
)
from .pdt_functions import oops
def failure_message(context):
"""Warn to the user to select 1 edge and 1 face.
Args:
context: Blender bpy.context instance.
Returns:
Nothing.
"""
pg = context.scene.pdt_pg
pg.error = f"{PDT_ERR_SEL_1_E_1_F}"
context.window_manager.popup_menu(oops, title="Error", icon="ERROR")
def failure_message_on_plane(context):
"""Report an informative error message in a popup.
Args:
context: Blender bpy.context instance.
Returns:
Nothing.
"""
pg = context.scene.pdt_pg
pg.error = f"{PDT_ERR_NOINT}"
context.window_manager.popup_menu(oops, title="Error", icon="ERROR")
def extend_vertex(context):
"""Computes Edge Extension to Face.
Args:
context: Blender bpy.context instance.
Returns:
Nothing.
"""
obj = bpy.context.edit_object
pg = context.scene.pdt_pg
if all([bool(obj), obj.type == "MESH", obj.mode == "EDIT"]):
object_data = obj.data
bm = bmesh.from_edit_mesh(object_data)
verts = bm.verts
faces = bm.faces
planes = [f for f in faces if f.select]
if not len(planes) == 1:
failure_message(context)
return
plane = planes[0]
plane_vert_indices = plane.verts[:]
all_selected_vert_indices = [v for v in verts if v.select]
plane_verts = set(plane_vert_indices)
all_verts = set(all_selected_vert_indices)
diff_verts = all_verts.difference(plane_verts)
diff_verts = list(diff_verts)
if not len(diff_verts) == 2:
failure_message(context)
return
(v1_ref, v1), (v2_ref, v2) = [(i, i.co) for i in diff_verts]
plane_co = plane.calc_center_median()
plane_no = plane.normal
new_co = intersect_line_plane(v1, v2, plane_co, plane_no, False)
if new_co:
new_vertex = verts.new(new_co)
a_len = (v1 - new_co).length
b_len = (v2 - new_co).length
vertex_reference = v1_ref if (a_len < b_len) else v2_ref
bm.edges.new([vertex_reference, new_vertex])
bmesh.update_edit_mesh(object_data, loop_triangles=True)
else:
failure_message_on_plane(context)
else:
pg.error = f"{PDT_ERR_EDOB_MODE},{obj.mode})"
context.window_manager.popup_menu(oops, title="Error", icon="ERROR")
return
class PDT_OT_EdgeToFace(bpy.types.Operator):
"""Extend Selected Edge to Projected Intersection with Selected Face"""
bl_idname = "pdt.edge_to_face"
bl_label = "Extend Edge to Face"
bl_options = {"REGISTER", "UNDO"}
@classmethod
def poll(cls, context):
"""Only allow this to work if a mesh is selected in EDIT mode.
Args:
context: Blender bpy.context instance.
Returns:
Boolean.
"""
obj = context.object
if obj is None:
return False
return all([bool(obj), obj.type == "MESH", obj.mode == "EDIT"])
def execute(self, context):
"""Extends Disconnected Edge to Intersect with Face.
Args:
context: Blender bpy.context instance.
Returns:
Status Set.
"""
pg = context.scene.pdt_pg
pg.command = f"etf"
return {"FINISHED"}
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