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X₈₇₉¶

ISOTOMIC CONJUGATE OF X₈₇₇

X₈₇₉ (ISOTOMIC CONJUGATE OF X₈₇₇) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_879 = ISOTOMIC CONJUGATE OF X_877."""

        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,
            circumcenter_of,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            isotomic_conjugate,
            orthocenter_of,
            point_from_barycentrics,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_00879(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_879 = ISOTOMIC CONJUGATE OF X_877 on reference triangle ABC."""
            X_877 = point_from_barycentrics(model, A, B, C, -0.31137873, 0.061326014, 1.2500527, ID="X_877", classes=["center"])
            X_879 = isotomic_conjugate(model, A, B, C, X_877, ID="X_879", classes=["selected", "target"])
            X_74 = eval_trilinear_point(model, A, B, C, '1/(cos(A) - 2*cos(B)*cos(C))', ID="X_74", 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_74, X_98, 74, 98, incident=True)
            X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center", "incident"])
            X_512 = eval_trilinear_point(model, A, B, C, 'a*(b**(2) - c**(2))', ID="X_512", classes=["center", "incident"])
            central_line(model, X_4, X_512, 4, 512, incident=True)
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
            X_525 = eval_trilinear_point(model, A, B, C, '(b*cos(B) - c*cos(C))/a', ID="X_525", classes=["center", "incident"])
            central_line(model, X_3, X_525, 3, 525, incident=True)
            return promote_point_to_top(model, X_879)


        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_879 on the given reference triangle."""
            model = create_model('X_879 = ISOTOMIC CONJUGATE OF X_877')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00879(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-00879.json"))
            write_center_svg(
                model_acute,
                here / "x-00879.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X879¶

X₈₇₉¶