X3844¶
X2321com(4th EULER TRIANGLE)
X3844 (X2321com(4th EULER TRIANGLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3844 = X_2321com(4th EULER TRIANGLE)."""
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_barycentric_point,
eval_trilinear_point,
promote_point_to_top,
spieker_center_of,
)
from geometor.etc.render import write_center_svg
def construct_x_03844(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3844 = X_2321com(4th EULER TRIANGLE) on reference triangle ABC."""
X_3844 = eval_barycentric_point(model, A, B, C, '(2*b**(3) + 2*c**(3) + a**(2)*b + a**(2)*c + a*b**(2) + a*c**(2) + 2*b**(2)*c + 2*b*c**(2))', ID="X_3844", classes=["selected", "target"])
X_10 = spieker_center_of(model, A, B, C, ID="X_10", classes=["center", "incident"])
X_141 = eval_trilinear_point(model, A, B, C, 'b*c*(b**(2) + c**(2))', ID="X_141", classes=["center", "incident"])
central_line(model, X_10, X_141, 10, 141, incident=True)
X_120 = eval_trilinear_point(model, A, B, C, 'b*c*(2*a*b*c - (b + c)*(a**(2) + (b - c)**(2)))*(b**(2) + c**(2) - a*b -a*c)', ID="X_120", classes=["center", "incident"])
X_125 = eval_trilinear_point(model, A, B, C, 'cos(A)*(sin(B - C))**(2)', ID="X_125", classes=["center", "incident"])
central_line(model, X_120, X_125, 120, 125, incident=True)
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
X_1386 = eval_trilinear_point(model, A, B, C, '(a*(a + b + c) + (a**(2) + b**(2) + c**(2)))', ID="X_1386", classes=["center", "incident"])
central_line(model, X_2, X_1386, 2, 1386, incident=True)
return promote_point_to_top(model, X_3844)
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_3844 on the given reference triangle."""
model = create_model('X_3844 = X_2321com(4th EULER TRIANGLE)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03844(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-03844.json"))
write_center_svg(
model_acute,
here / "x-03844.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)