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https://github.com/Mercury-Language/mercury.git
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7a85f13389
distribution. (For further information see, <http://www.cairographics.org/>.) The binding is currently fairly complete (enough for the cairo sample and tutorial programs to be work in Mercury). The main things missing are: * scaled fonts * a few operations on patterns (grep for NYI) * support for X, Quartz, or Win32 surfaces * font backends other than the builtin toy one TODO: I'll add README files, Makefiles, update the NEWS file, etc in a separate change. extras/graphics/mercury_cairo/*.m: extras/graphics/mercury_cairo/tutorial/*.m: extras/graphics/mercury_cairo/samples/*.m: extras/graphics/mercury_cairo/samples/data/*.png: Add the Mercury cairo binding.
50 lines
1.6 KiB
Mathematica
50 lines
1.6 KiB
Mathematica
%-----------------------------------------------------------------------------%
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:- module path_close.
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:- interface.
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:- import_module io.
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%-----------------------------------------------------------------------------%
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:- pred main(io::di, io::uo) is det.
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%-----------------------------------------------------------------------------%
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%-----------------------------------------------------------------------------%
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:- implementation.
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:- import_module cairo.
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:- import_module cairo.image.
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:- import_module cairo.path.
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:- import_module cairo.png.
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:- import_module cairo.transformations.
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:- import_module float.
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:- import_module math.
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%-----------------------------------------------------------------------------%
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main(!IO) :-
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cairo.image.create_surface(format_argb32, 120, 120, Surface, !IO),
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cairo.create_context(Surface, Context, !IO),
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cairo.transformations.scale(Context, 120.0, 120.0, !IO),
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cairo.set_line_width(Context, 0.1, !IO),
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cairo.set_source_rgb(Context, 0.0, 0.0, 0.0, !IO),
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cairo.path.move_to(Context, 0.25, 0.25, !IO),
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cairo.path.line_to(Context, 0.5, 0.375, !IO),
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cairo.path.rel_line_to(Context, 0.25, -0.125, !IO),
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cairo.path.arc(Context, 0.5, 0.5, 0.25 * sqrt(2.0), -0.25 * pi, 0.25 * pi, !IO),
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cairo.path.rel_curve_to(Context, -0.25, -0.125, -0.25, 0.125, -0.5, 0.0, !IO),
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cairo.path.close_path(Context, !IO),
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cairo.stroke(Context, !IO),
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cairo.png.write_surface_to_png(Surface, "path_close.png", !IO).
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%-----------------------------------------------------------------------------%
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:- end_module path_close.
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%-----------------------------------------------------------------------------%
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