X1705¶
EXSIMILICENTER(BEVAN CIRCLE, BROCARD CIRCLE)
X1705 is the exsimilicenter(Bevan circle, Brocard circle).
X1705 (EXSIMILICENTER(BEVAN CIRCLE, BROCARD CIRCLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_1705 = EXSIMILICENTER(BEVAN CIRCLE, BROCARD CIRCLE)."""
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,
point_from_barycentrics,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_01705(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_1705 = EXSIMILICENTER(BEVAN CIRCLE, BROCARD CIRCLE) on reference triangle ABC."""
X_1705 = eval_trilinear_point(model, A, B, C, '(2*cos(A - omega ) - e*(1 + cos(A) - cos(B) - cos(C)))', ID="X_1705", classes=["selected", "target"])
X_40 = eval_trilinear_point(model, A, B, C, 'cos(B) + cos(C) - cos(A) - 1', ID="X_40", classes=["center", "incident"])
X_182 = eval_trilinear_point(model, A, B, C, 'cos(A- omega )', ID="X_182", classes=["center", "incident"])
central_line(model, X_40, X_182, 40, 182, incident=True)
X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
X_1341 = point_from_barycentrics(model, A, B, C, 0.30653192, 0.35355532, 0.33991277, ID="X_1341", classes=["center", "incident"])
central_line(model, X_1, X_1341, 1, 1341, incident=True)
X_165 = eval_trilinear_point(model, A, B, C, 'tan(B/2) + tan(C/2) - tan(A/2)', ID="X_165", classes=["center", "incident"])
X_1340 = point_from_barycentrics(model, A, B, C, 0.34709524, 0.36700624, 0.28589852, ID="X_1340", classes=["center", "incident"])
central_line(model, X_165, X_1340, 165, 1340, incident=True)
return promote_point_to_top(model, X_1705)
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_1705 on the given reference triangle."""
model = create_model('X_1705 = EXSIMILICENTER(BEVAN CIRCLE, BROCARD CIRCLE)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_01705(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-01705.json"))
write_center_svg(
model_acute,
here / "x-01705.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)