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Added support for different railing cap types

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Very similar to this - https://i.imgur.com/SNyvfgh.png
This commit is contained in:
Andrej730
2023-04-28 17:23:04 +05:00
parent 3b69a4cc78
commit 9b22b5000f
2 changed files with 58 additions and 14 deletions
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src/ifcopenshell-python/ifcopenshell/api/geometry/add_railing_representation.py
+53 -9
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@@ -23,7 +23,7 @@ from mathutils import Vector, Matrix
import collections
import mathutils
from pprint import pprint
from math import pi, cos, sin, tan
from math import pi, cos, sin, tan, radians
def mm(x):
@@ -75,7 +75,8 @@ class Usecase:
railing_radius = self.settings["railing_diameter"] / 2
support_spacing = self.settings["support_spacing"]
clear_width = self.settings["clear_width"]
height = self.settings["height"]
# for calculations purposes we use height without railing radius
height = self.settings["height"] - railing_radius
cap_type = self.settings["terminal_type"]
ifc_context = self.settings["context"]
railing_coords = self.settings["railing_path"]
@@ -130,7 +131,7 @@ class Usecase:
)[0]
midpointco = center + ((fillet_v1co.lerp(fillet_v2co, 0.5) - center).normalized() * radius)
return fillet_v1co, midpointco, fillet_v2co
return [fillet_v1co, midpointco, fillet_v2co]
def add_arcs_on_turnings_points(base_points):
"""add 3 point fillet arcs on turning points of the railing path"""
@@ -207,12 +208,54 @@ class Usecase:
# TODO: implement more cap types
railing_coords_for_cap = railing_coords[::-1] if start else railing_coords
start = railing_coords_for_cap[-1]
start_point = railing_coords_for_cap[-1]
cap_dir = (railing_coords_for_cap[-1] - railing_coords_for_cap[-2]).xy.to_3d().normalized()
arc_point = start + cap_dir * terminal_radius + terminal_radius * z_down
arc_points.append(arc_point)
cap_coords = [arc_point, start + terminal_radius * 2 * z_down]
ortho_dir = (cap_dir.yx * V(1, -1)).to_3d().normalized()
if start:
ortho_dir = -ortho_dir
arc_middle_point_cos = sin(radians(45))
if cap_type in ('180', 'TO_END_POST'):
arc_point = start_point + cap_dir * terminal_radius + terminal_radius * z_down
arc_points.append(arc_point)
cap_coords = [arc_point, start_point + terminal_radius * 2 * z_down]
if cap_type == 'TO_END_POST':
end_point = railing_coords_for_cap[-2].copy()
end_point.z -= terminal_radius * 2
cap_coords.append(end_point)
elif cap_type == 'TO_WALL':
arc_point = start_point + cap_dir * clear_width * arc_middle_point_cos + ortho_dir * clear_width * (1-arc_middle_point_cos)
arc_points.append(arc_point)
cap_coords = [arc_point, start_point + ortho_dir * clear_width + cap_dir * clear_width]
elif cap_type == 'TO_FLOOR':
arc_point = start_point + cap_dir * terminal_radius * arc_middle_point_cos + z_down * terminal_radius * (1-arc_middle_point_cos)
arc_points.append(arc_point)
arc_end = start_point + cap_dir * terminal_radius + terminal_radius * z_down
cap_coords = [
arc_point,
arc_end,
arc_end+z_down*(height-terminal_radius),
]
elif cap_type == 'TO_END_POST_AND_FLOOR':
first_arc_end = start_point + cap_dir * terminal_radius + terminal_radius * z_down
first_arc_coords = get_fillet_points(
start_point, start_point + cap_dir * terminal_radius,
first_arc_end, terminal_radius)
arc_points.append(first_arc_coords[1])
end_point = railing_coords_for_cap[-2].copy()
end_point.z -= height
second_arc_coords = get_fillet_points(
first_arc_end, first_arc_end + z_down * terminal_radius, end_point, terminal_radius
)
arc_points.append(second_arc_coords[1])
cap_coords = [start_point] + first_arc_coords + second_arc_coords + [end_point]
railing_coords = railing_coords_for_cap + cap_coords
if start:
@@ -222,8 +265,9 @@ class Usecase:
items_3d.extend(create_supports_items(railing_coords, manual_supports=use_manual_supports))
railing_coords = add_arcs_on_turnings_points(railing_coords)
railing_coords, arc_points = add_cap(railing_coords, arc_points, start=True)
railing_coords, arc_points = add_cap(railing_coords, arc_points, start=False)
if cap_type != 'NONE':
railing_coords, arc_points = add_cap(railing_coords, arc_points, start=True)
railing_coords, arc_points = add_cap(railing_coords, arc_points, start=False)
railing_path = builder.polyline(
railing_coords, closed=False, arc_points=[railing_coords.index(p) for p in arc_points]