X3854¶
X3533com(EULER TRIANGLE)
X3854 (X3533com(EULER TRIANGLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3854 = X_3533com(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,
circumcenter_of,
construct_baseline_triangle,
create_model,
eval_barycentric_point,
eval_trilinear_point,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_03854(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3854 = X_3533com(EULER TRIANGLE) on reference triangle ABC."""
X_3854 = eval_barycentric_point(model, A, B, C, '(5*a**(4) - 11*b**(4) - 11*c**(4) + 6*a**(2)*b**(2) + 6*a**(2)*c**(2) + 22*b**(2)*c**(2))', ID="X_3854", classes=["selected", "target"])
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center"])
X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
central_line(model, X_2, X_3, 2, 3)
X_946 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(3)*(b + c) + (b - c)**(2)*(a**(2) - a*b - a*c - b**(2) - c**(2) - 2*b*c))', ID="X_946", classes=["center", "incident"])
X_3621 = eval_trilinear_point(model, A, B, C, 'b*c*(5*a - 3*b - 3*c)', ID="X_3621", classes=["center", "incident"])
central_line(model, X_946, X_3621, 946, 3621, incident=True)
X_1699 = eval_trilinear_point(model, A, B, C, '2*cos(B - C) - cos(A) + cos(B) + cos(C) - 1', ID="X_1699", classes=["center", "incident"])
X_3617 = eval_trilinear_point(model, A, B, C, 'b*c*(a - 3*b - 3*c)', ID="X_3617", classes=["center", "incident"])
central_line(model, X_1699, X_3617, 1699, 3617, incident=True)
return promote_point_to_top(model, X_3854)
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_3854 on the given reference triangle."""
model = create_model('X_3854 = X_3533com(EULER TRIANGLE)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03854(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-03854.json"))
write_center_svg(
model_acute,
here / "x-03854.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)