X1841¶
ZOSMA TRANSFORM OF X71
X1841 (ZOSMA TRANSFORM OF X71) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_1841 = ZOSMA TRANSFORM OF X_71."""
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_trilinear_point,
intersect_lines,
orthocenter_of,
promote_point_to_top,
symmedian_point_of,
)
from geometor.etc.render import write_center_svg
def construct_x_01841(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_1841 = ZOSMA TRANSFORM OF X_71 on reference triangle ABC."""
X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center"])
X_19 = eval_trilinear_point(model, A, B, C, 'tan(A)', ID="X_19", classes=["center"])
X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center"])
X_37 = eval_trilinear_point(model, A, B, C, 'b + c', ID="X_37", classes=["center"])
central_line(model, X_6, X_19, 6, 19)
central_line(model, X_4, X_37, 4, 37)
X_1841 = intersect_lines(model, X_6, X_19, X_4, X_37, ID="X_1841", classes=["selected", "target"])
X_53 = eval_trilinear_point(model, A, B, C, 'tan(A)*cos(B - C)', ID="X_53", classes=["center", "incident"])
X_225 = eval_trilinear_point(model, A, B, C, '(sec(A))*(cos(B) + cos(C))', ID="X_225", classes=["center", "incident"])
central_line(model, X_53, X_225, 53, 225, incident=True)
return promote_point_to_top(model, X_1841)
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_1841 on the given reference triangle."""
model = create_model('X_1841 = ZOSMA TRANSFORM OF X_71')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_01841(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-01841.json"))
write_center_svg(
model_acute,
here / "x-01841.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)