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X₁₆₅₃¶

5th EVANS PERSPECTOR

X₁₆₅₃ (5th EVANS PERSPECTOR) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).¶

"""GEOMETOR construction model for X_1653 = 5th EVANS PERSPECTOR."""

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


        def construct_x_01653(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1653 = 5th EVANS PERSPECTOR on reference triangle ABC."""
            X_1653 = eval_trilinear_point(model, A, B, C, '(sqrt(3/4) + sin(A -  pi  /3) - sin(B -  pi  /3) - sin(C -  pi  /3))', ID="X_1653", classes=["selected", "target"])
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            X_7 = gergonne_point_of(model, A, B, C, ID="X_7", classes=["center", "incident"])
            central_line(model, X_2, X_7, 2, 7, incident=True)
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_16 = eval_trilinear_point(model, A, B, C, 'sin(A-  pi  /3)', ID="X_16", classes=["center", "incident"])
            central_line(model, X_1, X_16, 1, 16, incident=True)
            X_46 = eval_trilinear_point(model, A, B, C, 'cos(B) + cos(C) - cos(A)', ID="X_46", classes=["center", "incident"])
            X_1276 = eval_trilinear_point(model, A, B, C, '(sqrt(3/4) + sin(A +  pi  /3) - sin(B +  pi  /3) - sin(C +  pi  /3))', ID="X_1276", classes=["center", "incident"])
            central_line(model, X_46, X_1276, 46, 1276, incident=True)
            return promote_point_to_top(model, X_1653)


        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_1653 on the given reference triangle."""
            model = create_model('X_1653 = 5th EVANS PERSPECTOR')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01653(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-01653.json"))
            write_center_svg(
                model_acute,
                here / "x-01653.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )
        

X1653¶

X₁₆₅₃¶