X539¶
DIRECTION OF VECTOR AX + BX + CX, where X = X54
X539 (DIRECTION OF VECTOR AX + BX + CX, where X = X54) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶
"""GEOMETOR construction model for X_539 = DIRECTION OF VECTOR AX + BX + CX, where X = X_54."""
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_00539(
model: Model, A: spg.Point, B: spg.Point, C: spg.Point
) -> spg.Point:
"""Construct X_539 = DIRECTION OF VECTOR AX + BX + CX, where X = X_54 on reference triangle ABC."""
X_539 = eval_barycentric_point(model, A, B, C, '(a**(2) - b**(2) - c**(2))*(2*a**(8) - 4*a**(6)*(b**(2) + c**(2)) + 3*a**(4)*(b**(4) + c**(4)) - 2*a**(2)*(b**(2) - c**(2))**(2)*(b**(2) + c**(2)) + (b**(2) - c**(2))**(4))', ID="X_539", classes=["selected", "target"])
X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
X_54 = eval_trilinear_point(model, A, B, C, 'sec(B - C)', ID="X_54", classes=["center", "incident"])
central_line(model, X_2, X_54, 2, 54, incident=True)
X_155 = eval_trilinear_point(model, A, B, C, '(cos(A))*((cos(B))**(2) + (cos(C))**(2) - (cos(A))**(2))', ID="X_155", classes=["center", "incident"])
X_195 = eval_trilinear_point(model, A, B, C, 'a*(a**(8) + b**(8) + c**(8) - 4*a**(6)*(b**(2) + c**(2)) + a**(4)*(6*b**(4) + 6*c**(4) + 5*b**(2)*c**(2)) - a**(2)*(4*b**(6) + 4*c**(6) - b**(4)*c**(2) - b**(2)*c**(4)) - 2*b**(2)*c**(2)*(b**(4) + c**(4) - b**(2)*c**(2)))', ID="X_195", classes=["center", "incident"])
central_line(model, X_155, X_195, 155, 195, 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_539)
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_539 on the given reference triangle."""
model = create_model('X_539 = DIRECTION OF VECTOR AX + BX + CX, where X = X_54')
A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
construct_x_00539(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-00539.json"))
write_center_svg(
model_acute,
here / "x-00539.svg",
subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
)