X2587¶
X3-ISOCONJUGATE OF X2575
X2587 (X3-ISOCONJUGATE OF X2575) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_2587 = X_3-ISOCONJUGATE OF X_2575."""
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,
construct_baseline_triangle,
create_model,
eval_trilinear_point,
incenter_of,
isogonal_conjugate,
point_from_barycentrics,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_02587(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_2587 = X_3-ISOCONJUGATE OF X_2575 on reference triangle ABC."""
X_2585 = point_from_barycentrics(model, A, B, C, 0.61255605, 0.88501944, -0.49757549, ID="X_2585", classes=["center"])
X_2587 = isogonal_conjugate(model, A, B, C, X_2585, ID="X_2587", classes=["selected", "target"])
X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
X_29 = eval_trilinear_point(model, A, B, C, '(sec(A))/(cos(B) + cos(C))', ID="X_29", classes=["center", "incident"])
central_line(model, X_1, X_29, 1, 29, incident=True)
X_108 = eval_trilinear_point(model, A, B, C, 'a/(sec(B) - sec(C))', ID="X_108", classes=["center", "incident"])
X_1114 = eval_trilinear_point(model, A, B, C, '(R + d)*cos(A) - 2*R*cos(B)*cos(C)', ID="X_1114", classes=["center", "incident"])
central_line(model, X_108, X_1114, 108, 1114, incident=True)
X_162 = eval_trilinear_point(model, A, B, C, '1/(sin(2*B) - sin(2*C))', ID="X_162", classes=["center", "incident"])
X_1823 = point_from_barycentrics(model, A, B, C, 0.72123578, 0.4152025, -0.13643829, ID="X_1823", classes=["center", "incident"])
central_line(model, X_162, X_1823, 162, 1823, incident=True)
return promote_point_to_top(model, X_2587)
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_2587 on the given reference triangle."""
model = create_model('X_2587 = X_3-ISOCONJUGATE OF X_2575')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_02587(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-02587.json"))
write_center_svg(
model_acute,
here / "x-02587.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)