X3222¶
ISOGONAL CONJUGATE OF X3221
X3222 (ISOGONAL CONJUGATE OF X3221) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3222 = ISOGONAL CONJUGATE OF X_3221."""
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,
centroid_of,
construct_baseline_triangle,
create_model,
eval_trilinear_point,
isogonal_conjugate,
point_from_barycentrics,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_03222(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3222 = ISOGONAL CONJUGATE OF X_3221 on reference triangle ABC."""
X_3221 = eval_trilinear_point(model, A, B, C, '(a*(b**(2) - c**(2))*(c**(2)*a**(2) + a**(2)*b**(2) - b**(2)*c**(2)))', ID="X_3221", classes=["center"])
X_3222 = isogonal_conjugate(model, A, B, C, X_3221, ID="X_3222", classes=["selected", "target"])
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
X_699 = eval_trilinear_point(model, A, B, C, '(1/(a **(-5)*(b **(-2) + c **(-2)) - a **(-3)*(b **(-4) + c **(-4))))', ID="X_699", classes=["center", "incident"])
central_line(model, X_2, X_699, 2, 699, incident=True)
X_645 = eval_trilinear_point(model, A, B, C, '((b + c - a)/(a*(b**(2) - c**(2))))', ID="X_645", classes=["center", "incident"])
X_803 = eval_trilinear_point(model, A, B, C, '(1/(a **(-3)*(b**(1) - c**(1)) + a**(0)*(b **(-2) - c **(-2))))', ID="X_803", classes=["center", "incident"])
central_line(model, X_645, X_803, 645, 803, incident=True)
X_799 = eval_trilinear_point(model, A, B, C, '(csc(A))**(2)/((cos(B))**(2) - (cos(C))**(2))', ID="X_799", classes=["center", "incident"])
X_932 = point_from_barycentrics(model, A, B, C, 0.76211763, -0.28424928, 0.52213165, ID="X_932", classes=["center", "incident"])
central_line(model, X_799, X_932, 799, 932, incident=True)
return promote_point_to_top(model, X_3222)
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_3222 on the given reference triangle."""
model = create_model('X_3222 = ISOGONAL CONJUGATE OF X_3221')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03222(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-03222.json"))
write_center_svg(
model_acute,
here / "x-03222.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)