X3625

H⁻¹(X1; M, -1/2)

X3625 = {X1,X8}-harmonic conjugate of X3626
< 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) { 1, 8 }: Nagel Line { 1, 2 }: Nagel Line { 548, 952 }: Central Line L(548, 952) { 536, 1358 }: Central Line L(536, 1358) { 515, 1657 }: Central Line L(515, 1657) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_3626 = H-1(X(1); M, -2) (0.4949, 0.1583) X_1 = INCENTER (0.5714, 0.2333) X_8 = NAGEL POINT (0.4694, 0.1333) X_2 = CENTROID (0.5374, 0.2000) X_548 = MIDPOINT OF X(5) AND X(20) (0.4719, 0.0286) X_952 = INTERSECTION OF X(1)X(5) AND X(3)X(8) (0.1267, 0.6191) X_536 = DIRECTION OF VECTOR AX + BX + CX, where X = X(37) (0.0840, -0.1727) X_1358 = BRISSE TRANSFORM OF X(101) (0.7869, 0.1440) X_515 = ISOGONAL CONJUGATE OF X(102) (0.6804, 0.7691) X_1657 = {X(3),X(4)}-HARMONIC CONJUGATE OF X(1656) (0.2755, -0.4853) X_3625 = H-1(X(1); M, -1/2) (0.4184, 0.0833) A B C X3626 X1 X8 X2 X548 X952 X536 X1358 X515 X1657 X3625 (a, b, c) = (5, 6, 7) | AB = 1

X3625 (H⁻¹(X1; M, -1/2)) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3625 = H⁻¹(X_1; M, -1/2)."""

        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_barycentric_point,
            eval_trilinear_point,
            incenter_of,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_03625(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3625 = H⁻¹(X_1; M, -1/2) on reference triangle ABC."""
            X_3625 = eval_trilinear_point(model, A, B, C, 'b*c*(4*a - 3*b - 3*c)', ID="X_3625", classes=["selected", "target"])
            X_1 = incenter_of(model, A, B, C, ID="X_1", classes=["center", "incident"])
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            central_line(model, X_1, X_2, 1, 2, incident=True)
            X_548 = eval_trilinear_point(model, A, B, C, '- cos(B - C) + 6*cos(A)', ID="X_548", classes=["center", "incident"])
            X_952 = eval_trilinear_point(model, A, B, C, 'b*c*(2*a**(4) - 2*a**(3)*(b + c) - a**(2)*(b**(2) - 4*b*c + c**(2)) + (2*a - b - c)*(b - c)*(b**(2) - c**(2)))', ID="X_952", classes=["center", "incident"])
            central_line(model, X_548, X_952, 548, 952, incident=True)
            X_536 = eval_barycentric_point(model, A, B, C, '2*b*c - c*a - a*b', ID="X_536", classes=["center", "incident"])
            X_1358 = eval_trilinear_point(model, A, B, C, '(tan(A/2))**(2)*(sin(B/2 - C/2))**(2)', ID="X_1358", classes=["center", "incident"])
            central_line(model, X_536, X_1358, 536, 1358, incident=True)
            return promote_point_to_top(model, X_3625)


        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_3625 on the given reference triangle."""
            model = create_model('X_3625 = H⁻¹(X_1; M, -1/2)')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03625(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-03625.json"))
            write_center_svg(
                model_acute,
                here / "x-03625.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )