X1827

ZOSMA TRANSFORM OF X7

< A B C >: Reference Triangle △ABC [ A B ]: Sideline AB (Base c = 1) [ B C ]: Sideline BC (Side a) [ C A ]: Sideline CA (Side b) { 4, 7 }: Central Line L(4, 7) { 19, 25 }: Central Line L(19, 25) { 294, 1172 }: Central Line L(294, 1172) { 46, 1721 }: Central Line L(46, 1721) { 1425, 1547 }: Central Line L(1425, 1547) { 208, 1887 }: Central Line L(208, 1887) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_4 = ORTHOCENTER (0.6122, 0.3958) X_33 = PERSPECTOR OF THE ORTHIC AND INTANGENTS TRIANGLES (0.6019, 0.3546) X_7 = GERGONNE POINT (0.5903, 0.2769) X_19 = CLAWSON POINT (0.6246, 0.4244) X_25 = HOMOTHETIC CENTER OF ORTHIC AND TANGENTIAL TRIANGLES (0.6329, 0.4497) X_294 = ISOGONAL CONJUGATE OF X(241) (0.9276, -0.0575) X_1172 = 1st SARAGOSSA POINT OF X(48) (0.6100, 0.3717) X_46 = -CEVA CONJUGATE OF X(1) (0.6917, 0.4543) X_1721 = MIMOSA TRANSFORM OF X(55) (0.6494, 0.4136) X_1425 = -BETH CONJUGATE OF X(201) (0.5904, 0.1922) X_1547 = ORTHOJOIN OF X(71) (0.6764, 1.0690) X_208 = -CEVA CONJUGATE OF X(34) (0.6242, -0.2728) X_1887 = ZOSMA TRANSFORM OF X(946) (0.6088, 0.3521) X_1827 = ZOSMA TRANSFORM OF X(7) (0.6082, 0.3740) A B C X4 X33 X7 X19 X25 X294 X1172 X46 X1721 X1425 X1547 X208 X1887 X1827 (a, b, c) = (5, 6, 7) | AB = 1

X1827 (ZOSMA TRANSFORM OF X7) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_1827 = ZOSMA TRANSFORM OF X_7."""

        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,
            crosspoint,
            eval_trilinear_point,
            gergonne_point_of,
            orthocenter_of,
            point_from_barycentrics,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_01827(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1827 = ZOSMA TRANSFORM OF X_7 on reference triangle ABC."""
            X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center"])
            X_33 = eval_trilinear_point(model, A, B, C, '1 + sec(A)', ID="X_33", classes=["center"])
            X_1827 = crosspoint(model, A, B, C, X_4, X_33, ID="X_1827", classes=["selected", "target"])
            X_7 = gergonne_point_of(model, A, B, C, ID="X_7", classes=["center", "incident"])
            central_line(model, X_4, X_7, 4, 7, incident=True)
            X_19 = eval_trilinear_point(model, A, B, C, 'tan(A)', ID="X_19", classes=["center", "incident"])
            X_25 = eval_trilinear_point(model, A, B, C, 'sin(A)*tan(A)', ID="X_25", classes=["center", "incident"])
            central_line(model, X_19, X_25, 19, 25, incident=True)
            X_294 = eval_trilinear_point(model, A, B, C, '((b + c - a)/(b**(2) + c**(2) - a*b - a*c))', ID="X_294", classes=["center", "incident"])
            X_1172 = point_from_barycentrics(model, A, B, C, 0.14979394, 0.23060383, 0.61960222, ID="X_1172", classes=["center", "incident"])
            central_line(model, X_294, X_1172, 294, 1172, incident=True)
            return promote_point_to_top(model, X_1827)


        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_1827 on the given reference triangle."""
            model = create_model('X_1827 = ZOSMA TRANSFORM OF X_7')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01827(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-01827.json"))
            write_center_svg(
                model_acute,
                here / "x-01827.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )