X2701¶
SR(X98, X102)
X2701 (SR(X98, X102)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_2701 = SR(X_98, X_102)."""
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,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_02701(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_2701 = SR(X_98, X_102) on reference triangle ABC."""
X_2701 = eval_trilinear_point(model, A, B, C, '(a/((b - c)*(a**(3) + b**(3) + c**(3) - 2*a**(2)*b - 2*a**(2)*c + a*b*c)))', ID="X_2701", classes=["selected", "target"])
X_98 = eval_trilinear_point(model, A, B, C, 'sec(A + omega )', ID="X_98", classes=["center", "incident"])
X_515 = eval_trilinear_point(model, A, B, C, '(b + c)*sec(A) - b*sec(B) - c*sec(C)', ID="X_515", classes=["center", "incident"])
central_line(model, X_98, X_515, 98, 515, 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_511 = eval_trilinear_point(model, A, B, C, 'cos(A + omega )', ID="X_511", classes=["center", "incident"])
central_line(model, X_102, X_511, 102, 511, incident=True)
X_99 = eval_trilinear_point(model, A, B, C, 'b*c/(b**(2) - c**(2))', ID="X_99", 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_99, X_522, 99, 522, incident=True)
return promote_point_to_top(model, X_2701)
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_2701 on the given reference triangle."""
model = create_model('X_2701 = SR(X_98, X_102)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_02701(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-02701.json"))
write_center_svg(
model_acute,
here / "x-02701.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)