X2118¶
POINT KEPLER VII
X2118 (POINT KEPLER VII) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_2118 = POINT KEPLER VII."""
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,
point_from_barycentrics,
promote_point_to_top,
symmedian_point_of,
)
from geometor.etc.render import write_center_svg
def construct_x_02118(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_2118 = POINT KEPLER VII on reference triangle ABC."""
X_2118 = eval_trilinear_point(model, A, B, C, '(a*(a + b + c)*(b*c)**(1/2) + (b*c + c*a + a*b)*(a - (a*b)**(1/2) - (a*c)**(1/2)))', ID="X_2118", classes=["selected", "target"])
X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
X_365 = eval_trilinear_point(model, A, B, C, 'a**(1/2)', ID="X_365", classes=["center", "incident"])
central_line(model, X_6, X_365, 6, 365, incident=True)
X_238 = eval_trilinear_point(model, A, B, C, 'a**(2) - b*c', ID="X_238", classes=["center", "incident"])
X_2119 = eval_trilinear_point(model, A, B, C, '(a**(1/2)/((a + b + c)*(a*b*c)**(1/2) + (b*c + c*a + a*b)*(a**(1/2) - b**(1/2) - c**(1/2))))', ID="X_2119", classes=["center", "incident"])
central_line(model, X_238, X_2119, 238, 2119, incident=True)
X_2108 = eval_trilinear_point(model, A, B, C, '((b + c)*a**(3) - (b**(2) - b*c + c**(2))*a**(2) - (b + c)*(b**(2) + c**(2))*a + b*c*(b**(2) + b*c + c**(2)))', ID="X_2108", classes=["center", "incident"])
X_2147 = point_from_barycentrics(model, A, B, C, 0.6235198, -0.91312312, 1.2896033, ID="X_2147", classes=["center", "incident"])
central_line(model, X_2108, X_2147, 2108, 2147, incident=True)
return promote_point_to_top(model, X_2118)
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_2118 on the given reference triangle."""
model = create_model('X_2118 = POINT KEPLER VII')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_02118(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-02118.json"))
write_center_svg(
model_acute,
here / "x-02118.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)