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X₁₉₅₀¶

CROSSSUM OF PU(20)

X₁₉₅₀ (CROSSSUM OF PU(20)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_1950 = CROSSSUM OF PU(20)."""

        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,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_01950(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1950 = CROSSSUM OF PU(20) on reference triangle ABC."""
            X_1950 = eval_trilinear_point(model, A, B, C, 'a*((cos(A))**(2) + cos(B)*cos(C))', ID="X_1950", classes=["selected", "target"])
            X_109 = eval_trilinear_point(model, A, B, C, 'a/(cos(B) - cos(C))', ID="X_109", classes=["center", "incident"])
            X_284 = eval_trilinear_point(model, A, B, C, '(sin(A))/(cos(B) + cos(C))', ID="X_284", classes=["center", "incident"])
            central_line(model, X_109, X_284, 109, 284, incident=True)
            X_19 = eval_trilinear_point(model, A, B, C, 'tan(A)', ID="X_19", classes=["center", "incident"])
            X_577 = eval_trilinear_point(model, A, B, C, 'sin(A)*(cos(A))**(2)', ID="X_577", classes=["center", "incident"])
            central_line(model, X_19, X_577, 19, 577, incident=True)
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
            X_608 = eval_trilinear_point(model, A, B, C, 'a*(1 - sec(A))', ID="X_608", classes=["center", "incident"])
            central_line(model, X_3, X_608, 3, 608, incident=True)
            return promote_point_to_top(model, X_1950)


        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_1950 on the given reference triangle."""
            model = create_model('X_1950 = CROSSSUM OF PU(20)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01950(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-01950.json"))
            write_center_svg(
                model_acute,
                here / "x-01950.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X1950¶

X₁₉₅₀¶