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X₂₆₅₉¶

CROSSDIFFERENCE OF PU(83)

X₂₆₅₉ = perspector of conic {{A, B, C,PU(82)}}

X₂₆₅₉ (CROSSDIFFERENCE OF PU(83)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_2659 = CROSSDIFFERENCE OF PU(83)."""

        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_barycentric_point,
            eval_trilinear_point,
            incenter_of,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_02659(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2659 = CROSSDIFFERENCE OF PU(83) on reference triangle ABC."""
            X_2659 = eval_trilinear_point(model, A, B, C, '(1/((sec(A) + sec(B))*(sec(A) + sec(C))) - 1/(sec(B) + sec(C))**(2))', ID="X_2659", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_29 = eval_trilinear_point(model, A, B, C, '(sec(A))/(cos(B) + cos(C))', ID="X_29", classes=["center", "incident"])
            central_line(model, X_1, X_29, 1, 29, incident=True)
            X_73 = eval_trilinear_point(model, A, B, C, 'sec(B) + sec(C)', ID="X_73", classes=["center", "incident"])
            X_410 = eval_barycentric_point(model, A, B, C, '(a + b) * (a + c) * (a**(2) + b**(2) - c**(2)) * (a**(2) - b**(2) + c**(2)) * (a**(8)*b**(2) - 3*a**(6)*b**(4) + 3*a**(4)*b**(6) - a**(2)*b**(8) + 3*a**(8)*b*c - a**(7)*b**(2)*c - 5*a**(6)*b**(3)*c + a**(5)*b**(4)*c + a**(4)*b**(5)*c + a**(3)*b**(6)*c + a**(2)*b**(7)*c - a*b**(8)*c + a**(8)*c**(2) - a**(7)*b*c**(2) - 3*a**(6)*b**(2)*c**(2) + a**(5)*b**(3)*c**(2) + 2*a**(4)*b**(4)*c**(2) + a**(3)*b**(5)*c**(2) + a**(2)*b**(6)*c**(2) - a*b**(7)*c**(2) - b**(8)*c**(2) - 5*a**(6)*b*c**(3) + a**(5)*b**(2)*c**(3) + 8*a**(4)*b**(3)*c**(3) - 2*a**(3)*b**(4)*c**(3) - a**(2)*b**(5)*c**(3) + a*b**(6)*c**(3) - 2*b**(7)*c**(3) - 3*a**(6)*c**(4) + a**(5)*b*c**(4) + 2*a**(4)*b**(2)*c**(4) - 2*a**(3)*b**(3)*c**(4) + a*b**(5)*c**(4) + b**(6)*c**(4) + a**(4)*b*c**(5) + a**(3)*b**(2)*c**(5) - a**(2)*b**(3)*c**(5) + a*b**(4)*c**(5) + 4*b**(5)*c**(5) + 3*a**(4)*c**(6) + a**(3)*b*c**(6) + a**(2)*b**(2)*c**(6) + a*b**(3)*c**(6) + b**(4)*c**(6) + a**(2)*b*c**(7) - a*b**(2)*c**(7) - 2*b**(3)*c**(7) - a**(2)*c**(8) - a*b*c**(8) - b**(2)*c**(8))', ID="X_410", classes=["center", "incident"])
            central_line(model, X_73, X_410, 73, 410, incident=True)
            X_185 = eval_trilinear_point(model, A, B, C, '(cos(A))*(1 - cos(A)*cos(B - C))', ID="X_185", classes=["center", "incident"])
            X_412 = eval_barycentric_point(model, A, B, C, '(a**(2) + b**(2) - c**(2)) * (a**(2) - b**(2) + c**(2)) * (a**(6) + a**(5)*b - 2*a**(4)*b**(2) - 2*a**(3)*b**(3) + a**(2)*b**(4) + a*b**(5) + a**(5)*c - a**(4)*b*c - a*b**(4)*c + b**(5)*c - 2*a**(4)*c**(2) + 2*a**(2)*b**(2)*c**(2) - 2*a**(3)*c**(3) - 2*b**(3)*c**(3) + a**(2)*c**(4) - a*b*c**(4) + a*c**(5) + b*c**(5))', ID="X_412", classes=["center", "incident"])
            central_line(model, X_185, X_412, 185, 412, incident=True)
            return promote_point_to_top(model, X_2659)


        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_2659 on the given reference triangle."""
            model = create_model('X_2659 = CROSSDIFFERENCE OF PU(83)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02659(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-02659.json"))
            write_center_svg(
                model_acute,
                here / "x-02659.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X2659¶

X₂₆₅₉¶