X1499

POINT BIHAM

< 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) { 30, 511 }: Central Line L(30, 511) { 3, 669 }: Central Line L(3, 669) { 98, 843 }: Central Line L(98, 843) { 4, 1550 }: Central Line L(4, 1550) { 74, 2770 }: Central Line L(74, 2770) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_1296 = COLLINGS TRANSFORM OF X(126) (0.0115, 0.2498) X_30 = EULER INFINITY POINT (0.7469, 0.7481) X_511 = ISOGONAL CONJUGATE OF X(98) (0.2335, -0.3020) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_669 = CROSSDIFFERENCE OF X(2) AND X(39) (-4.3514, 4.6163) X_98 = TARRY POINT (0.8891, -0.2281) X_843 = ISOGONAL CONJUGATE OF X(543) (0.1427, 0.4664) X_4 = ORTHOCENTER (0.6122, 0.3958) X_1550 = ORTHOJOIN OF X(110) (0.9211, 0.1083) X_74 = ISOGONAL CONJUGATE OF EULER INFINITY POINT (0.7484, -0.3437) X_2770 = SR(X(110), X(111)) (0.0375, 0.3178) X_1499 = POINT BIHAM (0.1078, 0.5997) A B C X1296 X30 X511 X3 X669 X98 X843 X4 X1550 X74 X2770 X1499 (a, b, c) = (5, 6, 7) | AB = 1

X1499 (POINT BIHAM) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_1499 = POINT BIHAM."""

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


        def construct_x_01499(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1499 = POINT BIHAM on reference triangle ABC."""
            X_1296 = eval_barycentric_point(model, A, B, C, 'a**(2)/((b**(2) - c**(2))*(5*a**(2) - b**(2) - c**(2)))', ID="X_1296", classes=["center"])
            X_1499 = isogonal_conjugate(model, A, B, C, X_1296, ID="X_1499", classes=["selected", "target"])
            X_30 = eval_trilinear_point(model, A, B, C, 'cos(A) - 2*cos(B)*cos(C)', ID="X_30", classes=["center", "incident"])
            X_511 = eval_trilinear_point(model, A, B, C, 'cos(A +  omega  )', ID="X_511", classes=["center", "incident"])
            central_line(model, X_30, X_511, 30, 511, incident=True)
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center", "incident"])
            X_669 = eval_trilinear_point(model, A, B, C, 'a**(3)*(b**(2) - c**(2))', ID="X_669", classes=["center", "incident"])
            central_line(model, X_3, X_669, 3, 669, incident=True)
            X_98 = eval_trilinear_point(model, A, B, C, 'sec(A +  omega  )', ID="X_98", classes=["center", "incident"])
            X_843 = point_from_barycentrics(model, A, B, C, 0.55581336, -0.33333326, 0.77751991, ID="X_843", classes=["center", "incident"])
            central_line(model, X_98, X_843, 98, 843, incident=True)
            return promote_point_to_top(model, X_1499)


        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_1499 on the given reference triangle."""
            model = create_model('X_1499 = POINT BIHAM')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01499(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-01499.json"))
            write_center_svg(
                model_acute,
                here / "x-01499.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )