X3924¶
X3710com(INCENTRAL TRIANGLE)
X3924 (X3710com(INCENTRAL TRIANGLE)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3924 = X_3710com(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,
centroid_of,
construct_baseline_triangle,
create_model,
eval_barycentric_point,
eval_trilinear_point,
incenter_of,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_03924(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3924 = X_3710com(INCENTRAL TRIANGLE) on reference triangle ABC."""
X_3924 = eval_barycentric_point(model, A, B, C, '(a*(a**(3) + b**(3) + c**(3) - b**(2)*c - b*c**(2)))', ID="X_3924", classes=["selected", "target"])
X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
central_line(model, X_1, X_2, 1, 2, incident=True)
X_31 = eval_trilinear_point(model, A, B, C, 'a**(2)', ID="X_31", classes=["center", "incident"])
X_65 = eval_trilinear_point(model, A, B, C, 'cos(B) + cos(C)', ID="X_65", classes=["center", "incident"])
central_line(model, X_31, X_65, 31, 65, incident=True)
X_34 = eval_trilinear_point(model, A, B, C, '1 - sec(A)', ID="X_34", classes=["center", "incident"])
X_207 = eval_trilinear_point(model, A, B, C, '((1 - sec(A))*(sec(B) + sec(C) - sec(A) - 1))', ID="X_207", classes=["center", "incident"])
central_line(model, X_34, X_207, 34, 207, incident=True)
return promote_point_to_top(model, X_3924)
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_3924 on the given reference triangle."""
model = create_model('X_3924 = X_3710com(INCENTRAL TRIANGLE)')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03924(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-03924.json"))
write_center_svg(
model_acute,
here / "x-03924.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)