Method: Magick::Image#swirl

Defined in:
ext/RMagick/rmimage.cpp

#swirl(degrees_obj) ⇒ Magick::Image

Swirl the pixels about the center of the image, where degrees indicates the sweep of the arc through which each pixel is moved. You get a more dramatic effect as the degrees move from 1 to 360.

Parameters:

  • degrees_obj (Numeric) —

    the degrees

Returns:



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# File 'ext/RMagick/rmimage.cpp', line 14029

VALUE
Image_swirl(VALUE self, VALUE degrees_obj)
{
    Image *image, *new_image;
    ExceptionInfo *exception;
    double degrees = NUM2DBL(degrees_obj);

    image = rm_check_destroyed(self);

    exception = AcquireExceptionInfo();

#if defined(IMAGEMAGICK_7)
    GVL_STRUCT_TYPE(SwirlImage) args = { image, degrees, image->interpolate, exception };
#else
    GVL_STRUCT_TYPE(SwirlImage) args = { image, degrees, exception };
#endif
    new_image = (Image *)CALL_FUNC_WITHOUT_GVL(GVL_FUNC(SwirlImage), &args);
    rm_check_exception(exception, new_image, DestroyOnError);
    DestroyExceptionInfo(exception);

    return rm_image_new(new_image);
}