X1294

COLLINGS TRANSFORM OF X122

< 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) { 3, 107 }: Central Line L(3, 107) { 4, 122 }: Central Line L(4, 122) { 20, 110 }: Central Line L(20, 110) { 2, 133 }: Central Line L(2, 133) { 112, 376 }: Central Line L(112, 376) { 550, 933 }: Central Line L(550, 933) A = Vertex A (0.0000, 0.0000) B = Vertex B (1.0000, 0.0000) C = Vertex C (0.6122, 0.5999) X_3 = CIRCUMCENTER (0.5000, 0.1021) X_107 = Ψ(SYMMEDIAN POINT, ORTHOCENTER) (0.5733, 0.6071) X_4 = ORTHOCENTER (0.6122, 0.3958) X_122 = -OF-MEDIAL-TRIANGLE (0.5195, -0.0036) X_20 = DE LONGCHAMPS POINT (0.3878, -0.1916) X_110 = FOCUS OF KIEPERT PARABOLA (0.2516, 0.5478) X_2 = CENTROID (0.5374, 0.2000) X_133 = INTERSECTION OF LINES X(4)X(74) AND X(5)X(122) (0.5928, 0.5014) X_112 = Ψ(ORTHOCENTER, SYMMEDIAN POINT) (0.5162, 0.6121) X_376 = CENTROID OF THE ANTIPEDAL TRIANGLE OF X(2) (0.4626, 0.0042) X_550 = MIDPOINT OF X(3) AND X(20) (0.4439, -0.0448) X_933 = -CROSS CONJUGATE OF X(250) (0.4754, 0.6118) X_1294 = COLLINGS TRANSFORM OF X(122) (0.4267, -0.4030) A B C X3 X107 X4 X122 X20 X110 X2 X133 X112 X376 X550 X933 X1294 (a, b, c) = (5, 6, 7) | AB = 1

X1294 (COLLINGS TRANSFORM OF X122) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_1294 = COLLINGS TRANSFORM OF X_122."""

        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,
            cevapoint,
            circumcenter_of,
            construct_baseline_triangle,
            create_model,
            eval_trilinear_point,
            orthocenter_of,
            promote_point_to_top,
        )
        from geometor.etc.render import write_center_svg


        def construct_x_01294(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1294 = COLLINGS TRANSFORM OF X_122 on reference triangle ABC."""
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
            X_30 = eval_trilinear_point(model, A, B, C, 'cos(A) - 2*cos(B)*cos(C)', ID="X_30", classes=["center"])
            X_1294 = cevapoint(model, A, B, C, X_3, X_30, ID="X_1294", classes=["selected", "target"])
            X_107 = eval_trilinear_point(model, A, B, C, '1/(cos(A)*(sin(2*B) - sin(2*C)))', ID="X_107", classes=["center", "incident"])
            central_line(model, X_3, X_107, 3, 107, incident=True)
            X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center", "incident"])
            X_122 = eval_trilinear_point(model, A, B, C, '(b**(2) - c**(2))**(2)*(cos(A) - cos(B)*cos(C))*(cot(A))**(2)', ID="X_122", classes=["center", "incident"])
            central_line(model, X_4, X_122, 4, 122, incident=True)
            X_20 = eval_trilinear_point(model, A, B, C, 'cos(A) - cos(B)*cos(C)', ID="X_20", classes=["center", "incident"])
            X_110 = eval_trilinear_point(model, A, B, C, 'csc(B - C)', ID="X_110", classes=["center", "incident"])
            central_line(model, X_20, X_110, 20, 110, incident=True)
            return promote_point_to_top(model, X_1294)


        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_1294 on the given reference triangle."""
            model = create_model('X_1294 = COLLINGS TRANSFORM OF X_122')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01294(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-01294.json"))
            write_center_svg(
                model_acute,
                here / "x-01294.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )