X3941¶
X3694com(TANGENTIAL TRIANGLE)
X3941 (X3694com(TANGENTIAL TRIANGLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3941 = X_3694com(TANGENTIAL 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_03941(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3941 = X_3694com(TANGENTIAL TRIANGLE) on reference triangle ABC."""
X_3941 = eval_barycentric_point(model, A, B, C, '(a**(3)*(b**(2) + c**(2) - b*c - c*a - a*b))', ID="X_3941", classes=["selected", "target"])
X_31 = eval_trilinear_point(model, A, B, C, 'a**(2)', ID="X_31", classes=["center", "incident"])
X_48 = eval_trilinear_point(model, A, B, C, 'tan(B) + tan(C)', ID="X_48", classes=["center", "incident"])
central_line(model, X_31, X_48, 31, 48, incident=True)
X_55 = eval_trilinear_point(model, A, B, C, 'a*(b + c - a)', ID="X_55", classes=["center", "incident"])
X_1100 = eval_trilinear_point(model, A, B, C, '2*a + b + c', ID="X_1100", classes=["center", "incident"])
central_line(model, X_55, X_1100, 55, 1100, incident=True)
X_579 = eval_trilinear_point(model, A, B, C, '(a*(a**(2)*b + a**(2)*c + a*b*c - b**(3) - c**(3)))', ID="X_579", classes=["center", "incident"])
X_674 = eval_trilinear_point(model, A, B, C, '(a*(b**(3) + c**(3) - a*(b**(2) + c**(2))))', ID="X_674", classes=["center", "incident"])
central_line(model, X_579, X_674, 579, 674, incident=True)
return promote_point_to_top(model, X_3941)
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_3941 on the given reference triangle."""
model = create_model('X_3941 = X_3694com(TANGENTIAL TRIANGLE)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03941(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-03941.json"))
write_center_svg(
model_acute,
here / "x-03941.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)