X536¶
DIRECTION OF VECTOR AX + BX + CX, where X = X37
X536 (DIRECTION OF VECTOR AX + BX + CX, where X = X37) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_536 = DIRECTION OF VECTOR AX + BX + CX, where X = X_37."""
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,
promote_point_to_top,
)
from geometor.etc.render import write_center_svg
def construct_x_00536(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_536 = DIRECTION OF VECTOR AX + BX + CX, where X = X_37 on reference triangle ABC."""
X_536 = eval_barycentric_point(model, A, B, C, '2*b*c - c*a - a*b', ID="X_536", classes=["selected", "target"])
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
X_37 = eval_trilinear_point(model, A, B, C, 'b + c', ID="X_37", classes=["center", "incident"])
central_line(model, X_2, X_37, 2, 37, incident=True)
X_44 = eval_trilinear_point(model, A, B, C, 'b + c - 2*a', ID="X_44", classes=["center", "incident"])
X_190 = eval_trilinear_point(model, A, B, C, 'b*c/(b - c)', ID="X_190", classes=["center", "incident"])
central_line(model, X_44, X_190, 44, 190, incident=True)
X_30 = eval_trilinear_point(model, A, B, C, 'cos(A) - 2*cos(B)*cos(C)', ID="X_30", classes=["center", "incident"])
X_511 = eval_trilinear_point(model, A, B, C, 'cos(A + omega )', ID="X_511", classes=["center", "incident"])
central_line(model, X_30, X_511, 30, 511, incident=True)
return promote_point_to_top(model, X_536)
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_536 on the given reference triangle."""
model = create_model('X_536 = DIRECTION OF VECTOR AX + BX + CX, where X = X_37')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_00536(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-00536.json"))
write_center_svg(
model_acute,
here / "x-00536.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)