X2695¶
SR(X74, X109)
X2695 (SR(X74, X109)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_2695 = SR(X_74, X_109)."""
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,
circumcenter_of,
construct_baseline_triangle,
create_model,
eval_trilinear_point,
point_from_barycentrics,
promote_point_to_top,
reflection_in_point,
)
from geometor.etc.render import write_center_svg
def construct_x_02695(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_2695 = SR(X_74, X_109) on reference triangle ABC."""
X_2689 = point_from_barycentrics(model, A, B, C, -0.17360704, 0.54428152, 0.62932551, ID="X_2689", classes=["center"])
X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
X_2695 = reflection_in_point(model, X_2689, X_3, ID="X_2695", classes=["selected", "target"], guide=False)
X_30 = eval_trilinear_point(model, A, B, C, 'cos(A) - 2*cos(B)*cos(C)', ID="X_30", classes=["center", "incident"])
X_109 = eval_trilinear_point(model, A, B, C, 'a/(cos(B) - cos(C))', ID="X_109", classes=["center", "incident"])
central_line(model, X_30, X_109, 30, 109, incident=True)
X_74 = eval_trilinear_point(model, A, B, C, '1/(cos(A) - 2*cos(B)*cos(C))', ID="X_74", classes=["center", "incident"])
X_522 = eval_trilinear_point(model, A, B, C, '(cos(B) - cos(C))*(csc(A))', ID="X_522", classes=["center", "incident"])
central_line(model, X_74, X_522, 74, 522, incident=True)
X_102 = eval_trilinear_point(model, A, B, C, '1/(sin(B)*(sec(A) - sec(B)) + sin(C)*(sec(A) - sec(C)))', ID="X_102", classes=["center", "incident"])
X_523 = eval_trilinear_point(model, A, B, C, 'sin(B -C)', ID="X_523", classes=["center", "incident"])
central_line(model, X_102, X_523, 102, 523, incident=True)
return promote_point_to_top(model, X_2695)
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_2695 on the given reference triangle."""
model = create_model('X_2695 = SR(X_74, X_109)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_02695(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-02695.json"))
write_center_svg(
model_acute,
here / "x-02695.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)