X2703¶
SR(X98, X104)
X2703 (SR(X98, X104)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_2703 = SR(X_98, X_104)."""
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_02703(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_2703 = SR(X_98, X_104) on reference triangle ABC."""
X_2699 = point_from_barycentrics(model, A, B, C, 0.82718162, -0.2432613, 0.41607968, ID="X_2699", classes=["center"])
X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
X_2703 = reflection_in_point(model, X_2699, X_3, ID="X_2703", classes=["selected", "target"], guide=False)
X_99 = eval_trilinear_point(model, A, B, C, 'b*c/(b**(2) - c**(2))', ID="X_99", classes=["center", "incident"])
X_513 = eval_trilinear_point(model, A, B, C, 'b - c', ID="X_513", classes=["center", "incident"])
central_line(model, X_99, X_513, 99, 513, incident=True)
X_100 = eval_trilinear_point(model, A, B, C, '1/(b - c)', ID="X_100", classes=["center", "incident"])
X_512 = eval_trilinear_point(model, A, B, C, 'a*(b**(2) - c**(2))', ID="X_512", classes=["center", "incident"])
central_line(model, X_100, X_512, 100, 512, incident=True)
X_98 = eval_trilinear_point(model, A, B, C, 'sec(A + omega )', ID="X_98", classes=["center", "incident"])
X_517 = eval_trilinear_point(model, A, B, C, '-1 + cos(B) + cos(C)', ID="X_517", classes=["center", "incident"])
central_line(model, X_98, X_517, 98, 517, incident=True)
return promote_point_to_top(model, X_2703)
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_2703 on the given reference triangle."""
model = create_model('X_2703 = SR(X_98, X_104)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_02703(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-02703.json"))
write_center_svg(
model_acute,
here / "x-02703.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)