X3896¶
X3741com[INVERSE(n(3rd EULER TRIANGLE))]
X3896 (X3741com[INVERSE(n(3rd EULER TRIANGLE))]) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3896 = X_3741com[INVERSE(n(3rd 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,
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_03896(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3896 = X_3741com[INVERSE(n(3rd EULER TRIANGLE))] on reference triangle ABC."""
X_3896 = eval_barycentric_point(model, A, B, C, '(2*a**(2)-b*c) * (b+c)', ID="X_3896", classes=["selected", "target"])
X_65 = eval_trilinear_point(model, A, B, C, 'cos(B) + cos(C)', ID="X_65", classes=["center", "incident"])
X_145 = eval_trilinear_point(model, A, B, C, 'b*c*(3*a - b - c)', ID="X_145", classes=["center", "incident"])
central_line(model, X_65, X_145, 65, 145, incident=True)
X_42 = eval_trilinear_point(model, A, B, C, 'a*(b + c)', ID="X_42", classes=["center", "incident"])
X_321 = eval_trilinear_point(model, A, B, C, '(b + c)*b**(2)*c**(2)', ID="X_321", classes=["center", "incident"])
central_line(model, X_42, X_321, 42, 321, incident=True)
X_38 = eval_trilinear_point(model, A, B, C, 'b**(2) + c**(2)', ID="X_38", classes=["center", "incident"])
X_519 = eval_trilinear_point(model, A, B, C, '(2*a - b - c)/a', ID="X_519", classes=["center", "incident"])
central_line(model, X_38, X_519, 38, 519, incident=True)
return promote_point_to_top(model, X_3896)
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_3896 on the given reference triangle."""
model = create_model('X_3896 = X_3741com[INVERSE(n(3rd EULER TRIANGLE))]')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03896(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-03896.json"))
write_center_svg(
model_acute,
here / "x-03896.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)