X2464¶
EXSIMILICENTER(ORTHOCENTROIDAL CIRCLE, INCIRCLE)
X2464 is the exsimilicenter(orthocentroidal circle, incircle).
X2464 (EXSIMILICENTER(ORTHOCENTROIDAL CIRCLE, INCIRCLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_2464 = EXSIMILICENTER(ORTHOCENTROIDAL CIRCLE, INCIRCLE)."""
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,
incenter_of,
point_from_barycentrics,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_02464(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_2464 = EXSIMILICENTER(ORTHOCENTROIDAL CIRCLE, INCIRCLE) on reference triangle ABC."""
X_2464 = eval_trilinear_point(model, A, B, C, '(J - cos(A) - 4*cos(B)*cos(C))', ID="X_2464", classes=["selected", "target"])
X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
X_381 = eval_trilinear_point(model, A, B, C, '2*cos(B - C) - cos(A)', ID="X_381", classes=["center", "incident"])
central_line(model, X_1, X_381, 1, 381, incident=True)
X_56 = eval_trilinear_point(model, A, B, C, 'a/(b + c - a)', ID="X_56", classes=["center", "incident"])
X_1345 = eval_trilinear_point(model, A, B, C, '( OH - R)*cos(A) - 4*R*cos(B)*cos(C)', ID="X_1345", classes=["center", "incident"])
central_line(model, X_56, X_1345, 56, 1345, incident=True)
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
X_2467 = point_from_barycentrics(model, A, B, C, 0.29344052, 0.3004125, 0.40614698, ID="X_2467", classes=["center", "incident"])
central_line(model, X_2, X_2467, 2, 2467, incident=True)
return promote_point_to_top(model, X_2464)
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_2464 on the given reference triangle."""
model = create_model('X_2464 = EXSIMILICENTER(ORTHOCENTROIDAL CIRCLE, INCIRCLE)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_02464(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-02464.json"))
write_center_svg(
model_acute,
here / "x-02464.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)