X132¶
X2X_107∩X4X_32
X132 (X2X_107∩X4X_32) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_132 = X_2X_107∩X_4X_32."""
from __future__ import annotations
from pathlib import Path
import sympy.geometry as spg
from geometor.model import Model
from geometor.etc.ops import (
central_line,
centroid_of,
construct_baseline_triangle,
create_model,
eval_trilinear_point,
midpoint,
nine_point_center_of,
orthocenter_of,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_00132(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_132 = X_2X_107∩X_4X_32 on reference triangle ABC."""
X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center"])
X_112 = eval_trilinear_point(model, A, B, C, 'a/(sin(2*B) - sin(2*C))', ID="X_112", classes=["center"])
X_132 = midpoint(model, X_4, X_112, ID="X_132", classes=["selected", "target"], guide=False)
X_32 = eval_trilinear_point(model, A, B, C, 'a**(3)', ID="X_32", classes=["center", "incident"])
central_line(model, X_4, X_32, 4, 32, incident=True)
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
X_107 = eval_trilinear_point(model, A, B, C, '1/(cos(A)*(sin(2*B) - sin(2*C)))', ID="X_107", classes=["center", "incident"])
central_line(model, X_2, X_107, 2, 107, incident=True)
X_5 = nine_point_center_of(model, A, B, C, ID="X_5", classes=["center", "incident"])
X_127 = eval_trilinear_point(model, A, B, C, 'b*c*(sin(2*B) - sin(2*C))*((b**(2) - c**(2))*sin(2*A) - b**(2)*sin(2*B) + c**(2)*sin(2*C))', ID="X_127", classes=["center", "incident"])
central_line(model, X_5, X_127, 5, 127, incident=True)
return promote_point_to_top(model, X_132)
def build_model(
sides: tuple[float, float, float] = (5.0, 6.0, 7.0),
show_guides: bool = False,
) -> Model:
"""Build a `geometor.model.Model` for X_132 on the given reference triangle."""
model = create_model('X_132 = X_2X_107∩X_4X_32')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_00132(model, A, B, C)
return model
if __name__ == "__main__":
here = Path(__file__).resolve().parent
model_acute = build_model((5.0, 6.0, 7.0))
model_acute.save(str(here / "x-00132.json"))
write_center_svg(
model_acute,
here / "x-00132.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)