X3948

X3009com[INVERSE(n(INCENTRAL TRIANGLE))]

< 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, 39 }: Central Line L(2, 39) { 10, 321 }: Central Line L(10, 321) { 37, 313 }: Central Line L(37, 313) { 92, 429 }: Central Line L(92, 429) { 257, 312 }: Central Line L(257, 312) { 239, 350 }: Central Line L(239, 350) 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_39 = BROCARD MIDPOINT (0.5778, 0.2305) X_10 = SPIEKER CENTER (0.5204, 0.1833) X_321 = ISOTOMIC CONJUGATE OF X(81) (0.4800, 0.1527) X_37 = CROSSPOINT OF INCENTER AND CENTROID (0.5567, 0.2158) X_313 = ISOTOMIC CONJUGATE OF X(58) (0.4368, 0.1249) X_92 = CEVAPOINT OF INCENTER AND CLAWSON POINT (0.5949, 0.3639) X_429 = EULER X(58)-5th-SUBSTITUTION POINT (0.6024, 0.3700) X_257 = ISOGONAL CONJUGATE OF X(172) (0.5240, 0.1822) X_312 = ISOTOMIC CONJUGATE OF X(57) (0.4256, 0.1081) X_239 = -LINE CONJUGATE OF X(42) (4.2109, 3.7992) X_350 = -HIRST INVERSE OF X(75) (-3.5227, -3.1370) X_3948 = com[INVERSE(n(INCENTRAL TRIANGLE))] (-1.6430, -1.4511) A B C X2 X39 X10 X321 X37 X313 X92 X429 X257 X312 X239 X350 X3948 (a, b, c) = (5, 6, 7) | AB = 1

X3948 (X3009com[INVERSE(n(INCENTRAL TRIANGLE))]) constructed on acute reference triangle \((a, b, c) = (5, 6, 7)\) with unit baseline AB = \(1\).

"""GEOMETOR construction model for X_3948 = X_3009com[INVERSE(n(INCENTRAL TRIANGLE))]."""

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


        def construct_x_03948(
            model: Model, A: spg.Point, B: spg.Point, C: spg.Point
        ) -> spg.Point:
            """Construct X_3948 = X_3009com[INVERSE(n(INCENTRAL TRIANGLE))] on reference triangle ABC."""
            X_3948 = eval_barycentric_point(model, A, B, C, '(b*c*(b + c)*(b*c - a**(2)))', ID="X_3948", classes=["selected", "target"])
            X_2 = centroid_of(model, A, B, C, ID="X_2", classes=["center", "incident"])
            X_39 = eval_trilinear_point(model, A, B, C, 'a*(b**(2) + c**(2))', ID="X_39", classes=["center", "incident"])
            central_line(model, X_2, X_39, 2, 39, incident=True)
            X_10 = spieker_center_of(model, A, B, C, ID="X_10", classes=["center", "incident"])
            X_321 = eval_trilinear_point(model, A, B, C, '(b + c)*b**(2)*c**(2)', ID="X_321", classes=["center", "incident"])
            central_line(model, X_10, X_321, 10, 321, incident=True)
            X_37 = eval_trilinear_point(model, A, B, C, 'b + c', ID="X_37", classes=["center", "incident"])
            X_313 = eval_trilinear_point(model, A, B, C, '(b + c)*b**(3)*c**(3)', ID="X_313", classes=["center", "incident"])
            central_line(model, X_37, X_313, 37, 313, incident=True)
            return promote_point_to_top(model, X_3948)


        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_3948 on the given reference triangle."""
            model = create_model('X_3948 = X_3009com[INVERSE(n(INCENTRAL TRIANGLE))]')
            A, B, C = construct_baseline_triangle(model, *sides, show_guides=show_guides)
            construct_x_03948(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-03948.json"))
            write_center_svg(
                model_acute,
                here / "x-03948.svg",
                subtitle="(a, b, c) = (5, 6, 7) | AB = 1",
            )