X1295

COLLINGS TRANSFORM OF X123

< 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, 108 }: Central Line L(3, 108) { 20, 100 }: Central Line L(20, 100) { 4, 123 }: Central Line L(4, 123) { 21, 107 }: Central Line L(21, 107) { 40, 109 }: Central Line L(40, 109) { 268, 281 }: Central Line L(268, 281) 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_108 = Ψ(CIRCUMCENTER, INCENTER) (0.5320, 0.6114) X_20 = DE LONGCHAMPS POINT (0.3878, -0.1916) X_100 = ANTICOMPLEMENT OF FEUERBACH POINT (0.1429, 0.4666) X_4 = ORTHOCENTER (0.6122, 0.3958) X_123 = -OF-MEDIAL-TRIANGLE (0.5401, -0.0057) X_21 = SCHIFFLER POINT (0.5287, 0.1771) X_107 = Ψ(SYMMEDIAN POINT, ORTHOCENTER) (0.5733, 0.6071) X_40 = BEVAN POINT (0.4286, -0.0292) X_109 = Ψ(INCENTER, CIRCUMCENTER) (0.3636, 0.5938) X_268 = ISOGONAL CONJUGATE OF X(196) (0.7710, 1.5678) X_281 = -CROSS CONJUGATE OF X(9) (0.5796, 0.3202) X_1295 = COLLINGS TRANSFORM OF X(123) (0.4680, -0.4072) A B C X3 X108 X20 X100 X4 X123 X21 X107 X40 X109 X268 X281 X1295 (a, b, c) = (5, 6, 7) | AB = 1

X1295 (COLLINGS TRANSFORM OF X123) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_1295 = COLLINGS TRANSFORM OF X_123."""

        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_01295(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_1295 = COLLINGS TRANSFORM OF X_123 on reference triangle ABC."""
            X_3 = circumcenter_of(model, A, B, C, ID="X_3", classes=["center"])
            X_517 = eval_trilinear_point(model, A, B, C, '-1 + cos(B) + cos(C)', ID="X_517", classes=["center"])
            X_1295 = cevapoint(model, A, B, C, X_3, X_517, ID="X_1295", classes=["selected", "target"])
            X_108 = eval_trilinear_point(model, A, B, C, 'a/(sec(B) - sec(C))', ID="X_108", classes=["center", "incident"])
            central_line(model, X_3, X_108, 3, 108, incident=True)
            X_20 = eval_trilinear_point(model, A, B, C, 'cos(A) - cos(B)*cos(C)', ID="X_20", classes=["center", "incident"])
            X_100 = eval_trilinear_point(model, A, B, C, '1/(b - c)', ID="X_100", classes=["center", "incident"])
            central_line(model, X_20, X_100, 20, 100, incident=True)
            X_4 = orthocenter_of(model, A, B, C, ID="X_4", classes=["center", "incident"])
            X_123 = eval_trilinear_point(model, A, B, C, '(csc(A))*(sec(B) - sec(C))*((sec(A))*((sin(B))**(2) - (sin(C))**(2)) + sin(C)*tan(C) - sin(B)*tan(B))', ID="X_123", classes=["center", "incident"])
            central_line(model, X_4, X_123, 4, 123, incident=True)
            return promote_point_to_top(model, X_1295)


        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_1295 on the given reference triangle."""
            model = create_model('X_1295 = COLLINGS TRANSFORM OF X_123')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_01295(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-01295.json"))
            write_center_svg(
                model_acute,
                here / "x-01295.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )