X3244¶
REFLECTION OF X10 IN X1
X3244 (REFLECTION OF X10 IN X1) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3244 = REFLECTION OF X_10 IN X_1."""
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_trilinear_point,
incenter_of,
midpoint,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_03244(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3244 = REFLECTION OF X_10 IN X_1 on reference triangle ABC."""
X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center"])
X_145 = eval_trilinear_point(model, A, B, C, 'b*c*(3*a - b - c)', ID="X_145", classes=["center"])
X_3244 = midpoint(model, X_1, X_145, ID="X_3244", classes=["selected", "target"], guide=False)
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_58 = eval_trilinear_point(model, A, B, C, 'a/(b + c)', ID="X_58", classes=["center", "incident"])
X_643 = eval_trilinear_point(model, A, B, C, '((b + c - a)/(b**(2) - c**(2)))', ID="X_643", classes=["center", "incident"])
central_line(model, X_58, X_643, 58, 643, incident=True)
X_382 = eval_trilinear_point(model, A, B, C, 'cos(A) - 4*cos(B)*cos(C)', ID="X_382", classes=["center", "incident"])
X_515 = eval_trilinear_point(model, A, B, C, '(b + c)*sec(A) - b*sec(B) - c*sec(C)', ID="X_515", classes=["center", "incident"])
central_line(model, X_382, X_515, 382, 515, incident=True)
return promote_point_to_top(model, X_3244)
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_3244 on the given reference triangle."""
model = create_model('X_3244 = REFLECTION OF X_10 IN X_1')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03244(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-03244.json"))
write_center_svg(
model_acute,
here / "x-03244.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)