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X₁₃₈₃¶

1st GRINBERG HOMOTHETIC CENTER

X₁₃₈₃ (1st GRINBERG HOMOTHETIC CENTER) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_1383 = 1st GRINBERG HOMOTHETIC CENTER."""

        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_trilinear_point,
            isogonal_conjugate,
            promote_point_to_top,
            symmedian_point_of,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_01383(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1383 = 1st GRINBERG HOMOTHETIC CENTER on reference triangle ABC."""
            X_599 = eval_trilinear_point(model, A, B, C, 'b*c*(a**(2) - 2*b**(2) - 2*c**(2))', ID="X_599", classes=["center"])
            X_1383 = isogonal_conjugate(model, A, B, C, X_599, ID="X_1383", classes=["selected", "target"])
            X_6 = symmedian_point_of(model, A, B, C, ID="X_6", classes=["center", "incident"])
            X_23 = eval_trilinear_point(model, A, B, C, 'a*(b**(4) + c**(4) - a**(4) - b**(2)*c**(2))', ID="X_23", classes=["center", "incident"])
            central_line(model, X_6, X_23, 6, 23, incident=True)
            X_32 = eval_trilinear_point(model, A, B, C, 'a**(3)', ID="X_32", classes=["center", "incident"])
            X_111 = eval_trilinear_point(model, A, B, C, 'a/(2*a**(2) - b**(2) - c**(2))', ID="X_111", classes=["center", "incident"])
            central_line(model, X_32, X_111, 32, 111, incident=True)
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            X_187 = eval_trilinear_point(model, A, B, C, 'a*(2*a**(2) - b**(2) - c**(2))', ID="X_187", classes=["center", "incident"])
            central_line(model, X_2, X_187, 2, 187, incident=True)
            return promote_point_to_top(model, X_1383)


        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_1383 on the given reference triangle."""
            model = create_model('X_1383 = 1st GRINBERG HOMOTHETIC CENTER')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01383(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-01383.json"))
            write_center_svg(
                model_acute,
                here / "x-01383.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X1383¶

X₁₃₈₃¶