X1552¶
ORTHOJOIN OF X112
X1552 (ORTHOJOIN OF X112) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_1552 = ORTHOJOIN OF X_112."""
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_barycentric_point,
eval_trilinear_point,
intersect_lines,
orthocenter_of,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_01552(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_1552 = ORTHOJOIN OF X_112 on reference triangle ABC."""
X_74 = eval_trilinear_point(model, A, B, C, '1/(cos(A) - 2*cos(B)*cos(C))', ID="X_74", classes=["center"])
X_403 = eval_trilinear_point(model, A, B, C, '(sec(A))*(1 + cos(2*B) + cos(2*C))', ID="X_403", classes=["center"])
X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center"])
X_523 = eval_trilinear_point(model, A, B, C, 'sin(B -C)', ID="X_523", classes=["center"])
central_line(model, X_74, X_403, 74, 403)
central_line(model, X_4, X_523, 4, 523)
X_1552 = intersect_lines(model, X_74, X_403, X_4, X_523, ID="X_1552", classes=["selected", "target"])
X_30 = eval_trilinear_point(model, A, B, C, 'cos(A) - 2*cos(B)*cos(C)', ID="X_30", classes=["center", "incident"])
X_1294 = eval_barycentric_point(model, A, B, C, '1/(a**(6)*(b**(2) + c**(2)) - a**(4)*(3*b**(4) - 4*b**(2)*c**(2) + 3*c**(4)) + 3*a**(2)*(b**(2) - c**(2))**(2)*(b**(2) + c**(2)) - (b**(2) - c**(2))**(2)*(b**(4) + 4*b**(2)*c**(2) + c**(4)))', ID="X_1294", classes=["center", "incident"])
central_line(model, X_30, X_1294, 30, 1294, incident=True)
return promote_point_to_top(model, X_1552)
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_1552 on the given reference triangle."""
model = create_model('X_1552 = ORTHOJOIN OF X_112')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_01552(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-01552.json"))
write_center_svg(
model_acute,
here / "x-01552.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)