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X₂₆₁₃¶

CROSSDIFFERENCE OF PU(70)

X₂₆₁₃ = reflection of X₂₆₁₂ in X₁₁₀₁

X₂₆₁₃ (CROSSDIFFERENCE OF PU(70)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_2613 = CROSSDIFFERENCE OF PU(70)."""

        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_trilinear_point,
            incenter_of,
            point_from_barycentrics,
            promote_point_to_top,
            reflection_in_point,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_02613(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_2613 = CROSSDIFFERENCE OF PU(70) on reference triangle ABC."""
            X_2612 = eval_trilinear_point(model, A, B, C, '(csc(A - B)*csc(A - C) - (csc(B - C))**(2))', ID="X_2612", classes=["center"])
            X_1101 = eval_trilinear_point(model, A, B, C, '((csc(B - C))**(2))', ID="X_1101", classes=["center"])
            X_2613 = reflection_in_point(model, X_2612, X_1101, ID="X_2613", classes=["selected", "target"], guide=False)
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_60 = eval_trilinear_point(model, A, B, C, '1/(1 + cos(B - C))', ID="X_60", classes=["center", "incident"])
            central_line(model, X_1, X_60, 1, 60, incident=True)
            X_523 = eval_trilinear_point(model, A, B, C, 'sin(B -C)', ID="X_523", classes=["center", "incident"])
            central_line(model, X_523, X_1101, 523, 1101, incident=True)
            X_1983 = eval_trilinear_point(model, A, B, C, '(sin(C - A) - sin(A - B))/sin(B - C)', ID="X_1983", classes=["center", "incident"])
            X_2610 = point_from_barycentrics(model, A, B, C, -2.9137931, 0.99310345, 2.9206897, ID="X_2610", classes=["center", "incident"])
            central_line(model, X_1983, X_2610, 1983, 2610, incident=True)
            return promote_point_to_top(model, X_2613)


        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_2613 on the given reference triangle."""
            model = create_model('X_2613 = CROSSDIFFERENCE OF PU(70)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_02613(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-02613.json"))
            write_center_svg(
                model_acute,
                here / "x-02613.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X2613¶

X₂₆₁₃¶