X3994¶
X899com[INVERSE(n(INCENTRAL TRIANGLE))]
X3994 (X899com[INVERSE(n(INCENTRAL TRIANGLE))]) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3994 = X_899com[INVERSE(n(INCENTRAL 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,
spieker_center_of,
)
from geometor.etc.render import write_center_svg
def construct_x_03994(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3994 = X_899com[INVERSE(n(INCENTRAL TRIANGLE))] on reference triangle ABC."""
X_3994 = eval_barycentric_point(model, A, B, C, '((b + c)*(a*b + a*c - 2*b*c))', ID="X_3994", classes=["selected", "target"])
X_10 = spieker_center_of(model, A, B, C, ID="X_10", 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_10, X_321, 10, 321, incident=True)
X_38 = eval_trilinear_point(model, A, B, C, 'b**(2) + c**(2)', ID="X_38", classes=["center", "incident"])
X_312 = eval_trilinear_point(model, A, B, C, '(b + c - a)*b**(2)*c**(2)', ID="X_312", classes=["center", "incident"])
central_line(model, X_38, X_312, 38, 312, incident=True)
X_244 = eval_trilinear_point(model, A, B, C, '(b - c)**(2)', ID="X_244", classes=["center", "incident"])
X_726 = eval_trilinear_point(model, A, B, C, '(a **(-3)*(b **(-1) + c **(-1)) - a **(-2)*(b **(-2) + c **(-2)))', ID="X_726", classes=["center", "incident"])
central_line(model, X_244, X_726, 244, 726, incident=True)
return promote_point_to_top(model, X_3994)
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_3994 on the given reference triangle."""
model = create_model('X_3994 = X_899com[INVERSE(n(INCENTRAL TRIANGLE))]')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03994(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-03994.json"))
write_center_svg(
model_acute,
here / "x-03994.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)