X3506¶
INTERSECTION OF LINES X2X_98 AND X32X_694
X3506 (INTERSECTION OF LINES X2X_98 AND X32X_694) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_3506 = INTERSECTION OF LINES X_2X_98 AND X_32X_694."""
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,
ceva_conjugate,
construct_baseline_triangle,
create_model,
eval_trilinear_point,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_03506(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_3506 = INTERSECTION OF LINES X_2X_98 AND X_32X_694 on reference triangle ABC."""
X_385 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(4) - b**(2)*c**(2))', ID="X_385", classes=["center"])
X_32 = eval_trilinear_point(model, A, B, C, 'a**(3)', ID="X_32", classes=["center"])
X_3506 = ceva_conjugate(model, A, B, C, X_385, X_32, ID="X_3506", classes=["selected", "target"])
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
X_98 = eval_trilinear_point(model, A, B, C, 'sec(A + omega )', ID="X_98", classes=["center", "incident"])
central_line(model, X_2, X_98, 2, 98, incident=True)
X_694 = eval_trilinear_point(model, A, B, C, 'a/(a**(4) - b**(2)*c**(2))', ID="X_694", classes=["center", "incident"])
central_line(model, X_32, X_694, 32, 694, incident=True)
X_648 = eval_trilinear_point(model, A, B, C, '1/(a*(b**(2) - c**(2))*(b**(2) + c**(2) - a**(2)))', ID="X_648", classes=["center", "incident"])
X_1974 = eval_trilinear_point(model, A, B, C, 'a**(4)*cos(B)*cos(C)', ID="X_1974", classes=["center", "incident"])
central_line(model, X_648, X_1974, 648, 1974, incident=True)
return promote_point_to_top(model, X_3506)
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_3506 on the given reference triangle."""
model = create_model('X_3506 = INTERSECTION OF LINES X_2X_98 AND X_32X_694')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_03506(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-03506.json"))
write_center_svg(
model_acute,
here / "x-03506.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)