X533

DIRECTION OF VECTOR AX + BX + CX, where X = X18

< 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) { 2, 18 }: Central Line L(2, 18) { 14, 299 }: Central Line L(14, 299) { 15, 298 }: Central Line L(15, 298) { 30, 511 }: Central Line L(30, 511) { 16, 617 }: Central Line L(16, 617) { 13, 621 }: Central Line L(13, 621) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_2 = CENTROID (0.5374, 0.2000) X_18 = 2nd NAPOLEON POINT (0.4434, 0.1317) X_14 = 2nd ISOGONIC CENTER (0.9134, -0.1143) X_299 = ISOTOMIC CONJUGATE OF 2nd ISOGONIC CENTER (-1.1465, -1.6097) X_15 = 1st ISODYNAMIC POINT (0.5519, 0.1878) X_298 = ISOTOMIC CONJUGATE OF 1st ISOGONIC CENTER (0.4724, 0.1301) X_30 = EULER INFINITY POINT (0.7469, 0.7481) X_511 = ISOGONAL CONJUGATE OF X(98) (0.2335, -0.3020) X_16 = 2nd ISODYNAMIC POINT (1.8453, 2.3239) X_617 = ANTICOMPLEMENT OF X(14) (-0.2146, 0.8285) X_13 = 1st ISOGONIC CENTER (FERMAT POINT, TORRICELLI POINT) (0.5879, 0.2819) X_621 = ANTICOMPLEMENT OF X(15) (0.5084, 0.2242) X_533 = DIRECTION OF VECTOR AX + BX + CX, where X = X(18) (0.0625, -0.1448) A B C X2 X18 X14 X299 X15 X298 X30 X511 X16 X617 X13 X621 X533 (a, b, c) = (5, 6, 7) | AB = 1

X533 (DIRECTION OF VECTOR AX + BX + CX, where X = X18) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_533 = DIRECTION OF VECTOR AX + BX + CX, where X = X_18."""

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


        def construct_x_00533(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_533 = DIRECTION OF VECTOR AX + BX + CX, where X = X_18 on reference triangle ABC."""
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center"])
            X_18 = eval_trilinear_point(model, A, B, C, 'csc(A -  pi  /6)', ID="X_18", classes=["center"])
            X_14 = eval_trilinear_point(model, A, B, C, 'csc(A -  pi  /3)', ID="X_14", classes=["center"])
            X_299 = eval_trilinear_point(model, A, B, C, '(csc(A))**(2)*sin(A -  pi  /3)', ID="X_299", classes=["center"])
            central_line(model, X_2, X_18, 2, 18)
            central_line(model, X_14, X_299, 14, 299)
            X_533 = intersect_lines(model, X_2, X_18, X_14, X_299, ID="X_533", classes=["selected", "target"])
            X_15 = eval_trilinear_point(model, A, B, C, 'sin(A +  pi  /3)', ID="X_15", classes=["center", "incident"])
            X_298 = eval_trilinear_point(model, A, B, C, '(csc(A))**(2)*sin(A +  pi  /3)', ID="X_298", classes=["center", "incident"])
            central_line(model, X_15, X_298, 15, 298, incident=True)
            return promote_point_to_top(model, X_533)


        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_533 on the given reference triangle."""
            model = create_model('X_533 = DIRECTION OF VECTOR AX + BX + CX, where X = X_18')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_00533(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-00533.json"))
            write_center_svg(
                model_acute,
                here / "x-00533.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )