/**************************************************************************//**
 * Contains all module, class, method declarations. Defines all constants.
 * Contains Magick module methods.
 *
 * Copyright &copy; 2002 - 2009 by Timothy P. Hunter
 *
 * Changes since Nov. 2009 copyright &copy; by Benjamin Thomas and Omer Bar-or
 *
 * @file     rmmain.c
 * @version  $Id: rmmain.c,v 1.303 2009/12/20 02:33:33 baror Exp $
 * @author   Tim Hunter
 ******************************************************************************/

#define MAIN                        // Define external variables
#include "rmagick.h"
#include "magick/version.h"

/*----------------------------------------------------------------------------\
| External declarations
\----------------------------------------------------------------------------*/
void Init_RMagick(void);

static void test_Magick_version(void);
static void version_constants(void);
static void features_constant(void);




/*
 *  Handle transferring ImageMagick memory allocations/frees to Ruby.
 *  These functions have the same signature as the equivalent C functions.
 */
#if defined(HAVE_SETMAGICKMEMORYMETHODS)
/**
 * Allocate memory.
 *
 * No Ruby usage (internal function)
 *
 * @param size the size of memory to allocate
 * @return pointer to a block of memory
 */
static void *rm_malloc(size_t size)
{
    void *p;
//    int old_state;

//    old_state = rb_gc_disable();
    p = xmalloc((long)size);
//    if (!RTEST(old_state))
//    {
//        rb_gc_enable();
//    }

    return p;
}




/**
 * Reallocate memory.
 *
 * No Ruby usage (internal function)
 *
 * @param ptr pointer to the existing block of memory
 * @param size the new size of memory to allocate
 * @return pointer to a block of memory
 */
static void *rm_realloc(void *ptr, size_t size)
{
    void *p;
//    int old_state;

//    old_state = rb_gc_disable();
    p = xrealloc(ptr, (long)size);
//    if (!RTEST(old_state))
//    {
//        rb_gc_enable();
//    }

    return p;
}




/**
 * Free memory.
 *
 * No Ruby usage (internal function)
 *
 * @param ptr pointer to the existing block of memory
 */
static void rm_free(void *ptr)
{
    xfree(ptr);
}


/**
 * Use managed memory.
 *
 * No Ruby usage (internal function)
 */
static void set_managed_memory(void)
{
    ID enable_mm = rb_intern("RMAGICK_ENABLE_MANAGED_MEMORY");

    if (RTEST(rb_const_defined(rb_cObject, enable_mm)) && RTEST(rb_const_get(rb_cObject, enable_mm)))
    {
        rb_warning("RMagick: %s", "managed memory enabled. This is an experimental feature.");
        SetMagickMemoryMethods(rm_malloc, rm_realloc, rm_free);
        rb_define_const(Module_Magick, "MANAGED_MEMORY", Qtrue);
    }
    else
    {
        rb_define_const(Module_Magick, "MANAGED_MEMORY", Qfalse);
    }
}
#endif




/**
 * Define the classes and constants.
 *
 * No Ruby usage (internal function)
 */
void
Init_RMagick2(void)
{
    volatile VALUE observable;

    MagickCoreGenesis("RMagick", MagickFalse);

    test_Magick_version();

    Module_Magick = rb_define_module("Magick");

#if defined(HAVE_SETMAGICKMEMORYMETHODS)
    set_managed_memory();
#else
    rb_define_const(Module_Magick, "MANAGED_MEMORY", Qfalse);
#endif

    /*-----------------------------------------------------------------------*/
    /* Create IDs for frequently used methods, etc.                          */
    /*-----------------------------------------------------------------------*/

    rm_ID_trace_proc       = rb_intern("@trace_proc");
    rm_ID_call             = rb_intern("call");
    rm_ID_changed          = rb_intern("changed");
    rm_ID_cur_image        = rb_intern("cur_image");
    rm_ID_dup              = rb_intern("dup");
    rm_ID_fill             = rb_intern("fill");
    rm_ID_flag             = rb_intern("flag");
    rm_ID_from_s           = rb_intern("from_s");
    rm_ID_Geometry         = rb_intern("Geometry");
    rm_ID_GeometryValue    = rb_intern("GeometryValue");
    rm_ID_has_key_q        = rb_intern("has_key?");
    rm_ID_height           = rb_intern("height");
    rm_ID_initialize_copy  = rb_intern("initialize_copy");
    rm_ID_length           = rb_intern("length");
    rm_ID_notify_observers = rb_intern("notify_observers");
    rm_ID_new              = rb_intern("new");
    rm_ID_push             = rb_intern("push");
    rm_ID_spaceship        = rb_intern("<=>");
    rm_ID_to_i             = rb_intern("to_i");
    rm_ID_to_s             = rb_intern("to_s");
    rm_ID_values           = rb_intern("values");
    rm_ID_width            = rb_intern("width");
    rm_ID_x                = rb_intern("x");
    rm_ID_y                = rb_intern("y");

    /*-----------------------------------------------------------------------*/
    /* Module Magick methods                                                 */
    /*-----------------------------------------------------------------------*/

    rb_define_module_function(Module_Magick, "colors", Magick_colors, 0);
    rb_define_module_function(Module_Magick, "fonts", Magick_fonts, 0);
    rb_define_module_function(Module_Magick, "init_formats", Magick_init_formats, 0);
    rb_define_module_function(Module_Magick, "limit_resource", Magick_limit_resource, -1);
    rb_define_module_function(Module_Magick, "set_cache_threshold", Magick_set_cache_threshold, 1);
    rb_define_module_function(Module_Magick, "set_log_event_mask", Magick_set_log_event_mask, -1);
    rb_define_module_function(Module_Magick, "set_log_format", Magick_set_log_format, 1);

    /*-----------------------------------------------------------------------*/
    /* Class Magick::Image methods                                           */
    /*-----------------------------------------------------------------------*/

    Class_Image = rb_define_class_under(Module_Magick, "Image", rb_cObject);

    // Define an alias for Object#display before we override it
    rb_define_alias(Class_Image, "__display__", "display");

    rb_define_alloc_func(Class_Image, Image_alloc);
    rb_define_method(Class_Image, "initialize", Image_initialize, -1);

    rb_define_singleton_method(Class_Image, "combine", Image_combine, -1);
    rb_define_singleton_method(Class_Image, "constitute", Image_constitute, 4);
    rb_define_singleton_method(Class_Image, "_load", Image__load, 1);
    rb_define_singleton_method(Class_Image, "capture", Image_capture, -1);
    rb_define_singleton_method(Class_Image, "ping", Image_ping, 1);
    rb_define_singleton_method(Class_Image, "read", Image_read, 1);
    rb_define_singleton_method(Class_Image, "read_inline", Image_read_inline, 1);
    rb_define_singleton_method(Class_Image, "from_blob", Image_from_blob, 1);

    DCL_ATTR_WRITER(Image, alpha)
    DCL_ATTR_ACCESSOR(Image, background_color)
    DCL_ATTR_READER(Image, base_columns)
    DCL_ATTR_READER(Image, base_filename)
    DCL_ATTR_READER(Image, base_rows)
    DCL_ATTR_ACCESSOR(Image, bias)
    DCL_ATTR_ACCESSOR(Image, black_point_compensation)
    DCL_ATTR_ACCESSOR(Image, blur)
    DCL_ATTR_ACCESSOR(Image, border_color)
    DCL_ATTR_READER(Image, bounding_box)
    DCL_ATTR_ACCESSOR(Image, chromaticity)
    DCL_ATTR_ACCESSOR(Image, color_profile)
    DCL_ATTR_READER(Image, colors)
    DCL_ATTR_ACCESSOR(Image, colorspace)
    DCL_ATTR_READER(Image, columns)
    DCL_ATTR_ACCESSOR(Image, compose)
    DCL_ATTR_ACCESSOR(Image, compression)
    DCL_ATTR_ACCESSOR(Image, delay)
    DCL_ATTR_ACCESSOR(Image, density)
    DCL_ATTR_READER(Image, depth)
    DCL_ATTR_READER(Image, directory)
    DCL_ATTR_ACCESSOR(Image, dispose)
    DCL_ATTR_ACCESSOR(Image, endian)
    DCL_ATTR_ACCESSOR(Image, extract_info)
    DCL_ATTR_READER(Image, filename)
    DCL_ATTR_READER(Image, filesize)
    DCL_ATTR_ACCESSOR(Image, filter)
    DCL_ATTR_ACCESSOR(Image, format)
    DCL_ATTR_ACCESSOR(Image, fuzz)
    DCL_ATTR_ACCESSOR(Image, gamma)
    DCL_ATTR_ACCESSOR(Image, geometry)
    DCL_ATTR_ACCESSOR(Image, gravity)
    DCL_ATTR_ACCESSOR(Image, image_type)
    DCL_ATTR_ACCESSOR(Image, interlace)
    DCL_ATTR_ACCESSOR(Image, iptc_profile)
    DCL_ATTR_ACCESSOR(Image, iterations)        // do not document! Only used by Image#iterations=
    DCL_ATTR_WRITER(Image, mask)
    DCL_ATTR_ACCESSOR(Image, matte)
    DCL_ATTR_ACCESSOR(Image, matte_color)
    DCL_ATTR_READER(Image, mean_error_per_pixel)
    DCL_ATTR_READER(Image, mime_type)
    DCL_ATTR_WRITER(Image, monitor)
    DCL_ATTR_READER(Image, montage)
    DCL_ATTR_READER(Image, normalized_mean_error)
    DCL_ATTR_READER(Image, normalized_maximum_error)
    DCL_ATTR_READER(Image, number_colors)
    DCL_ATTR_ACCESSOR(Image, offset)
    DCL_ATTR_WRITER(Image, opacity)
    DCL_ATTR_ACCESSOR(Image, orientation)
    DCL_ATTR_ACCESSOR(Image, page)
    DCL_ATTR_ACCESSOR(Image, pixel_interpolation_method)
    DCL_ATTR_READER(Image, quality)
    DCL_ATTR_READER(Image, quantum_depth)
    DCL_ATTR_ACCESSOR(Image, rendering_intent)
    DCL_ATTR_READER(Image, rows)
    DCL_ATTR_READER(Image, scene)
    DCL_ATTR_ACCESSOR(Image, start_loop)
    DCL_ATTR_ACCESSOR(Image, class_type)
    DCL_ATTR_ACCESSOR(Image, ticks_per_second)
    DCL_ATTR_READER(Image, total_colors)
    DCL_ATTR_READER(Image, total_ink_density)
    DCL_ATTR_ACCESSOR(Image, transparent_color)
    DCL_ATTR_ACCESSOR(Image, units)
    DCL_ATTR_ACCESSOR(Image, virtual_pixel_method)
    DCL_ATTR_ACCESSOR(Image, x_resolution)
    DCL_ATTR_ACCESSOR(Image, y_resolution)

    rb_define_method(Class_Image, "adaptive_blur", Image_adaptive_blur, -1);
    rb_define_method(Class_Image, "adaptive_blur_channel", Image_adaptive_blur_channel, -1);
    rb_define_method(Class_Image, "adaptive_resize", Image_adaptive_resize, -1);
    rb_define_method(Class_Image, "adaptive_sharpen", Image_adaptive_sharpen, -1);
    rb_define_method(Class_Image, "adaptive_sharpen_channel", Image_adaptive_sharpen_channel, -1);
    rb_define_method(Class_Image, "adaptive_threshold", Image_adaptive_threshold, -1);
    rb_define_method(Class_Image, "add_compose_mask", Image_add_compose_mask, 1);
    rb_define_method(Class_Image, "add_noise", Image_add_noise, 1);
    rb_define_method(Class_Image, "add_noise_channel", Image_add_noise_channel, -1);
    rb_define_method(Class_Image, "add_profile", Image_add_profile, 1);
    rb_define_method(Class_Image, "affine_transform", Image_affine_transform, 1);
    rb_define_method(Class_Image, "remap", Image_remap, -1);
    rb_define_method(Class_Image, "alpha", Image_alpha, -1);
    rb_define_method(Class_Image, "alpha?", Image_alpha_q, 0);
    rb_define_method(Class_Image, "[]", Image_aref, 1);
    rb_define_method(Class_Image, "[]=", Image_aset, 2);
    rb_define_method(Class_Image, "auto_gamma_channel", Image_auto_gamma_channel, -1);
    rb_define_method(Class_Image, "auto_level_channel", Image_auto_level_channel, -1);
    rb_define_method(Class_Image, "auto_orient", Image_auto_orient, 0);
    rb_define_method(Class_Image, "auto_orient!", Image_auto_orient_bang, 0);
    rb_define_method(Class_Image, "properties", Image_properties, 0);
    rb_define_method(Class_Image, "bilevel_channel", Image_bilevel_channel, -1);
    rb_define_method(Class_Image, "black_threshold", Image_black_threshold, -1);
    rb_define_method(Class_Image, "blend", Image_blend, -1);
    rb_define_method(Class_Image, "blue_shift", Image_blue_shift, -1);
    rb_define_method(Class_Image, "blur_image", Image_blur_image, -1);
    rb_define_method(Class_Image, "blur_channel", Image_blur_channel, -1);
    rb_define_method(Class_Image, "border", Image_border, 3);
    rb_define_method(Class_Image, "border!", Image_border_bang, 3);
    rb_define_method(Class_Image, "change_geometry", Image_change_geometry, 1);
    rb_define_method(Class_Image, "change_geometry!", Image_change_geometry, 1);
    rb_define_method(Class_Image, "changed?", Image_changed_q, 0);
    rb_define_method(Class_Image, "channel", Image_channel, 1);
    // An alias for compare_channel
    rb_define_method(Class_Image, "channel_compare", Image_compare_channel, -1);
    rb_define_method(Class_Image, "check_destroyed", Image_check_destroyed, 0);
    rb_define_method(Class_Image, "compare_channel", Image_compare_channel, -1);
    rb_define_method(Class_Image, "channel_depth", Image_channel_depth, -1);
    rb_define_method(Class_Image, "channel_extrema", Image_channel_extrema, -1);
    rb_define_method(Class_Image, "channel_mean", Image_channel_mean, -1);
    rb_define_method(Class_Image, "charcoal", Image_charcoal, -1);
    rb_define_method(Class_Image, "chop", Image_chop, 4);
    rb_define_method(Class_Image, "clut_channel", Image_clut_channel, -1);
    rb_define_method(Class_Image, "clone", Image_clone, 0);
    rb_define_method(Class_Image, "color_flood_fill", Image_color_flood_fill, 5);
    rb_define_method(Class_Image, "color_histogram", Image_color_histogram, 0);
    rb_define_method(Class_Image, "colorize", Image_colorize, -1);
    rb_define_method(Class_Image, "colormap", Image_colormap, -1);
    rb_define_method(Class_Image, "composite", Image_composite, -1);
    rb_define_method(Class_Image, "composite!", Image_composite_bang, -1);
    rb_define_method(Class_Image, "composite_affine", Image_composite_affine, 2);
    rb_define_method(Class_Image, "composite_channel", Image_composite_channel, -1);
    rb_define_method(Class_Image, "composite_channel!", Image_composite_channel_bang, -1);
    rb_define_method(Class_Image, "composite_mathematics", Image_composite_mathematics, -1);
    rb_define_method(Class_Image, "composite_tiled", Image_composite_tiled, -1);
    rb_define_method(Class_Image, "composite_tiled!", Image_composite_tiled_bang, -1);
    rb_define_method(Class_Image, "compress_colormap!", Image_compress_colormap_bang, 0);
    rb_define_method(Class_Image, "contrast", Image_contrast, -1);
    rb_define_method(Class_Image, "contrast_stretch_channel", Image_contrast_stretch_channel, -1);
    rb_define_method(Class_Image, "convolve", Image_convolve, 2);
    rb_define_method(Class_Image, "convolve_channel", Image_convolve_channel, -1);
    rb_define_method(Class_Image, "copy", Image_copy, 0);
    rb_define_method(Class_Image, "crop", Image_crop, -1);
    rb_define_method(Class_Image, "crop!", Image_crop_bang, -1);
    rb_define_method(Class_Image, "cycle_colormap", Image_cycle_colormap, 1);
    rb_define_method(Class_Image, "decipher", Image_decipher, 1);
    rb_define_method(Class_Image, "define", Image_define, 2);
    rb_define_method(Class_Image, "deskew", Image_deskew, -1);
    rb_define_method(Class_Image, "delete_compose_mask", Image_delete_compose_mask, 0);
    rb_define_method(Class_Image, "delete_profile", Image_delete_profile, 1);
    rb_define_method(Class_Image, "despeckle", Image_despeckle, 0);
    rb_define_method(Class_Image, "destroy!", Image_destroy_bang, 0);
    rb_define_method(Class_Image, "destroyed?", Image_destroyed_q, 0);
    rb_define_method(Class_Image, "difference", Image_difference, 1);
    rb_define_method(Class_Image, "dispatch", Image_dispatch, -1);
    rb_define_method(Class_Image, "displace", Image_displace, -1);
    rb_define_method(Class_Image, "display", Image_display, 0);
    rb_define_method(Class_Image, "dissolve", Image_dissolve, -1);
    rb_define_method(Class_Image, "distort", Image_distort, -1);
    rb_define_method(Class_Image, "distortion_channel", Image_distortion_channel, -1);
    rb_define_method(Class_Image, "_dump", Image__dump, 1);
    rb_define_method(Class_Image, "dup", Image_dup, 0);
    rb_define_method(Class_Image, "each_profile", Image_each_profile, 0);
    rb_define_method(Class_Image, "edge", Image_edge, -1);
    rb_define_method(Class_Image, "emboss", Image_emboss, -1);
    rb_define_method(Class_Image, "encipher", Image_encipher, 1);
    rb_define_method(Class_Image, "enhance", Image_enhance, 0);
    rb_define_method(Class_Image, "equalize", Image_equalize, 0);
    rb_define_method(Class_Image, "equalize_channel", Image_equalize_channel, -1);
    rb_define_method(Class_Image, "erase!", Image_erase_bang, 0);
    rb_define_method(Class_Image, "excerpt", Image_excerpt, 4);
    rb_define_method(Class_Image, "excerpt!", Image_excerpt_bang, 4);
    rb_define_method(Class_Image, "export_pixels", Image_export_pixels, -1);
    rb_define_method(Class_Image, "export_pixels_to_str", Image_export_pixels_to_str, -1);
    rb_define_method(Class_Image, "extent", Image_extent, -1);
    rb_define_method(Class_Image, "find_similar_region", Image_find_similar_region, -1);
    rb_define_method(Class_Image, "flip", Image_flip, 0);
    rb_define_method(Class_Image, "flip!", Image_flip_bang, 0);
    rb_define_method(Class_Image, "flop", Image_flop, 0);
    rb_define_method(Class_Image, "flop!", Image_flop_bang, 0);
    rb_define_method(Class_Image, "frame", Image_frame, -1);
    rb_define_method(Class_Image, "function_channel", Image_function_channel, -1);
    rb_define_method(Class_Image, "gamma_channel", Image_gamma_channel, -1);
    rb_define_method(Class_Image, "gamma_correct", Image_gamma_correct, -1);
    rb_define_method(Class_Image, "gaussian_blur", Image_gaussian_blur, -1);
    rb_define_method(Class_Image, "gaussian_blur_channel", Image_gaussian_blur_channel, -1);
    rb_define_method(Class_Image, "get_pixels", Image_get_pixels, 4);
    rb_define_method(Class_Image, "gray?", Image_gray_q, 0);
    rb_define_method(Class_Image, "grey?", Image_gray_q, 0);
    rb_define_method(Class_Image, "histogram?", Image_histogram_q, 0);
    rb_define_method(Class_Image, "implode", Image_implode, -1);
    rb_define_method(Class_Image, "import_pixels", Image_import_pixels, -1);
    rb_define_method(Class_Image, "initialize_copy", Image_init_copy, 1);
    rb_define_method(Class_Image, "inspect", Image_inspect, 0);
    rb_define_method(Class_Image, "level2", Image_level2, -1);
    rb_define_method(Class_Image, "level_channel", Image_level_channel, -1);
    rb_define_method(Class_Image, "level_colors", Image_level_colors, -1);
    rb_define_method(Class_Image, "levelize_channel", Image_levelize_channel, -1);
    rb_define_method(Class_Image, "linear_stretch", Image_linear_stretch, -1);
    rb_define_method(Class_Image, "liquid_rescale", Image_liquid_rescale, -1);
    rb_define_method(Class_Image, "magnify", Image_magnify, 0);
    rb_define_method(Class_Image, "magnify!", Image_magnify_bang, 0);
    rb_define_method(Class_Image, "map", Image_map, -1);
    rb_define_method(Class_Image, "marshal_dump", Image_marshal_dump, 0);
    rb_define_method(Class_Image, "marshal_load", Image_marshal_load, 1);
    rb_define_method(Class_Image, "mask", Image_mask, -1);
    rb_define_method(Class_Image, "matte_flood_fill", Image_matte_flood_fill, 5);
    rb_define_method(Class_Image, "median_filter", Image_median_filter, -1);
    rb_define_method(Class_Image, "minify", Image_minify, 0);
    rb_define_method(Class_Image, "minify!", Image_minify_bang, 0);
    rb_define_method(Class_Image, "modulate", Image_modulate, -1);
    rb_define_method(Class_Image, "monochrome?", Image_monochrome_q, 0);
    rb_define_method(Class_Image, "motion_blur", Image_motion_blur, -1);
    rb_define_method(Class_Image, "negate", Image_negate, -1);
    rb_define_method(Class_Image, "negate_channel", Image_negate_channel, -1);
    rb_define_method(Class_Image, "normalize", Image_normalize, 0);
    rb_define_method(Class_Image, "normalize_channel", Image_normalize_channel, -1);
    rb_define_method(Class_Image, "oil_paint", Image_oil_paint, -1);
    rb_define_method(Class_Image, "opaque", Image_opaque, 2);
    rb_define_method(Class_Image, "opaque_channel", Image_opaque_channel, -1);
    rb_define_method(Class_Image, "opaque?", Image_opaque_q, 0);
    rb_define_method(Class_Image, "ordered_dither", Image_ordered_dither, -1);
    rb_define_method(Class_Image, "paint_transparent", Image_paint_transparent, -1);
    rb_define_method(Class_Image, "palette?", Image_palette_q, 0);
    rb_define_method(Class_Image, "pixel_color", Image_pixel_color, -1);
    rb_define_method(Class_Image, "polaroid", Image_polaroid, -1);
    rb_define_method(Class_Image, "posterize", Image_posterize, -1);
//  rb_define_method(Class_Image, "plasma", Image_plasma, 6);
    rb_define_method(Class_Image, "preview", Image_preview, 1);
    rb_define_method(Class_Image, "profile!", Image_profile_bang, 2);
    rb_define_method(Class_Image, "quantize", Image_quantize, -1);
    rb_define_method(Class_Image, "quantum_operator", Image_quantum_operator, -1);
    rb_define_method(Class_Image, "radial_blur", Image_radial_blur, 1);
    rb_define_method(Class_Image, "radial_blur_channel", Image_radial_blur_channel, -1);
    rb_define_method(Class_Image, "raise", Image_raise, -1);
    rb_define_method(Class_Image, "random_threshold_channel", Image_random_threshold_channel, -1);
    rb_define_method(Class_Image, "recolor", Image_recolor, 1);
    rb_define_method(Class_Image, "reduce_noise", Image_reduce_noise, 1);
    rb_define_method(Class_Image, "resample", Image_resample, -1);
    rb_define_method(Class_Image, "resample!", Image_resample_bang, -1);
    rb_define_method(Class_Image, "resize", Image_resize, -1);
    rb_define_method(Class_Image, "resize!", Image_resize_bang, -1);
    rb_define_method(Class_Image, "roll", Image_roll, 2);
    rb_define_method(Class_Image, "rotate", Image_rotate, -1);
    rb_define_method(Class_Image, "rotate!", Image_rotate_bang, -1);
    rb_define_method(Class_Image, "sample", Image_sample, -1);
    rb_define_method(Class_Image, "sample!", Image_sample_bang, -1);
    rb_define_method(Class_Image, "scale", Image_scale, -1);
    rb_define_method(Class_Image, "scale!", Image_scale_bang, -1);
    rb_define_method(Class_Image, "segment", Image_segment, -1);
    rb_define_method(Class_Image, "selective_blur_channel", Image_selective_blur_channel, -1);
    rb_define_method(Class_Image, "separate", Image_separate, -1);
    rb_define_method(Class_Image, "sepiatone", Image_sepiatone, -1);
    rb_define_method(Class_Image, "set_channel_depth", Image_set_channel_depth, 2);
    rb_define_method(Class_Image, "shade", Image_shade, -1);
    rb_define_method(Class_Image, "shadow", Image_shadow, -1);
    rb_define_method(Class_Image, "sharpen", Image_sharpen, -1);
    rb_define_method(Class_Image, "sharpen_channel", Image_sharpen_channel, -1);
    rb_define_method(Class_Image, "shave", Image_shave, 2);
    rb_define_method(Class_Image, "shave!", Image_shave_bang, 2);
    rb_define_method(Class_Image, "shear", Image_shear, 2);
    rb_define_method(Class_Image, "sigmoidal_contrast_channel", Image_sigmoidal_contrast_channel, -1);
    rb_define_method(Class_Image, "signature", Image_signature, 0);
    rb_define_method(Class_Image, "sketch", Image_sketch, -1);
    rb_define_method(Class_Image, "solarize", Image_solarize, -1);
    rb_define_method(Class_Image, "<=>", Image_spaceship, 1);
    rb_define_method(Class_Image, "sparse_color", Image_sparse_color, -1);
    rb_define_method(Class_Image, "splice", Image_splice, -1);
    rb_define_method(Class_Image, "spread", Image_spread, -1);
    rb_define_method(Class_Image, "stegano", Image_stegano, 2);
    rb_define_method(Class_Image, "stereo", Image_stereo, 1);
    rb_define_method(Class_Image, "strip!", Image_strip_bang, 0);
    rb_define_method(Class_Image, "store_pixels", Image_store_pixels, 5);
    rb_define_method(Class_Image, "swirl", Image_swirl, 1);
    rb_define_method(Class_Image, "sync_profiles", Image_sync_profiles, 0);
    rb_define_method(Class_Image, "texture_flood_fill", Image_texture_flood_fill, 5);
    rb_define_method(Class_Image, "threshold", Image_threshold, 1);
    rb_define_method(Class_Image, "thumbnail", Image_thumbnail, -1);
    rb_define_method(Class_Image, "thumbnail!", Image_thumbnail_bang, -1);
    rb_define_method(Class_Image, "tint", Image_tint, -1);
    rb_define_method(Class_Image, "to_color", Image_to_color, 1);
    rb_define_method(Class_Image, "to_blob", Image_to_blob, 0);
    rb_define_method(Class_Image, "transparent", Image_transparent, -1);
    rb_define_method(Class_Image, "transparent_chroma", Image_transparent_chroma, -1);
    rb_define_method(Class_Image, "transpose", Image_transpose, 0);
    rb_define_method(Class_Image, "transpose!", Image_transpose_bang, 0);
    rb_define_method(Class_Image, "transverse", Image_transverse, 0);
    rb_define_method(Class_Image, "transverse!", Image_transverse_bang, 0);
    rb_define_method(Class_Image, "trim", Image_trim, -1);
    rb_define_method(Class_Image, "trim!", Image_trim_bang, -1);
    rb_define_method(Class_Image, "undefine", Image_undefine, 1);
    rb_define_method(Class_Image, "unique_colors", Image_unique_colors, 0);
    rb_define_method(Class_Image, "unsharp_mask", Image_unsharp_mask, -1);
    rb_define_method(Class_Image, "unsharp_mask_channel", Image_unsharp_mask_channel, -1);
    rb_define_method(Class_Image, "vignette", Image_vignette, -1);
    rb_define_method(Class_Image, "watermark", Image_watermark, -1);
    rb_define_method(Class_Image, "wave", Image_wave, -1);
    rb_define_method(Class_Image, "wet_floor", Image_wet_floor, -1);
    rb_define_method(Class_Image, "white_threshold", Image_white_threshold, -1);
    rb_define_method(Class_Image, "write", Image_write, 1);

    /*-----------------------------------------------------------------------*/
    /* Class Magick::ImageList methods (see also RMagick.rb)                 */
    /*-----------------------------------------------------------------------*/

    Class_ImageList = rb_define_class_under(Module_Magick, "ImageList", rb_cObject);

    // Define an alias for Object#display before we override it
    rb_define_alias(Class_ImageList, "__display__", "display");
    rb_define_method(Class_ImageList, "remap", ImageList_remap, -1);
    rb_define_method(Class_ImageList, "animate", ImageList_animate, -1);
    rb_define_method(Class_ImageList, "append", ImageList_append, 1);
    rb_define_method(Class_ImageList, "average", ImageList_average, 0);
    rb_define_method(Class_ImageList, "coalesce", ImageList_coalesce, 0);
    rb_define_method(Class_ImageList, "composite_layers", ImageList_composite_layers, -1);
    rb_define_method(Class_ImageList, "deconstruct", ImageList_deconstruct, 0);
    rb_define_method(Class_ImageList, "display", ImageList_display, 0);
    rb_define_method(Class_ImageList, "flatten_images", ImageList_flatten_images, 0);
    rb_define_method(Class_ImageList, "fx", ImageList_fx, -1);
    rb_define_method(Class_ImageList, "map", ImageList_map, -1);
    rb_define_method(Class_ImageList, "montage", ImageList_montage, 0);
    rb_define_method(Class_ImageList, "morph", ImageList_morph, 1);
    rb_define_method(Class_ImageList, "mosaic", ImageList_mosaic, 0);
    rb_define_method(Class_ImageList, "optimize_layers", ImageList_optimize_layers, 1);
    rb_define_method(Class_ImageList, "quantize", ImageList_quantize, -1);
    rb_define_method(Class_ImageList, "to_blob", ImageList_to_blob, 0);
    rb_define_method(Class_ImageList, "write", ImageList_write, 1);

    /*-----------------------------------------------------------------------*/
    /* Class Magick::Draw methods                                            */
    /*-----------------------------------------------------------------------*/

    Class_Draw = rb_define_class_under(Module_Magick, "Draw", rb_cObject);
    rb_define_alloc_func(Class_Draw, Draw_alloc);

    DCL_ATTR_WRITER(Draw, affine)
    DCL_ATTR_WRITER(Draw, align)
    DCL_ATTR_WRITER(Draw, decorate)
    DCL_ATTR_WRITER(Draw, density)
    DCL_ATTR_WRITER(Draw, encoding)
    DCL_ATTR_WRITER(Draw, fill)
    DCL_ATTR_WRITER(Draw, fill_pattern)
    DCL_ATTR_WRITER(Draw, font)
    DCL_ATTR_WRITER(Draw, font_family)
    DCL_ATTR_WRITER(Draw, font_stretch)
    DCL_ATTR_WRITER(Draw, font_style)
    DCL_ATTR_WRITER(Draw, font_weight)
    DCL_ATTR_WRITER(Draw, gravity)
    DCL_ATTR_WRITER(Draw, interline_spacing)
    DCL_ATTR_WRITER(Draw, interword_spacing)
    DCL_ATTR_WRITER(Draw, kerning)
    DCL_ATTR_WRITER(Draw, pointsize)
    DCL_ATTR_WRITER(Draw, rotation)
    DCL_ATTR_WRITER(Draw, stroke)
    DCL_ATTR_WRITER(Draw, stroke_pattern)
    DCL_ATTR_WRITER(Draw, stroke_width)
    DCL_ATTR_WRITER(Draw, text_antialias)
    DCL_ATTR_WRITER(Draw, tile)
    DCL_ATTR_WRITER(Draw, undercolor)

    rb_define_method(Class_Draw, "annotate", Draw_annotate, 6);
    rb_define_method(Class_Draw, "clone", Draw_clone, 0);
    rb_define_method(Class_Draw, "composite", Draw_composite, -1);
    rb_define_method(Class_Draw, "draw", Draw_draw, 1);
    rb_define_method(Class_Draw, "dup", Draw_dup, 0);
    rb_define_method(Class_Draw, "get_type_metrics", Draw_get_type_metrics, -1);
    rb_define_method(Class_Draw, "get_multiline_type_metrics", Draw_get_multiline_type_metrics, -1);
    rb_define_method(Class_Draw, "initialize", Draw_initialize, 0);
    rb_define_method(Class_Draw, "initialize_copy", Draw_init_copy, 1);
    rb_define_method(Class_Draw, "inspect", Draw_inspect, 0);
    rb_define_method(Class_Draw, "marshal_dump", Draw_marshal_dump, 0);
    rb_define_method(Class_Draw, "marshal_load", Draw_marshal_load, 1);
    rb_define_method(Class_Draw, "primitive", Draw_primitive, 1);

    /*-----------------------------------------------------------------------*/
    /* Class Magick::DrawOptions is identical to Magick::Draw but with       */
    /* only the attribute writer methods. This is the object that is passed  */
    /* to the block associated with the Draw.new method call.                */
    /*-----------------------------------------------------------------------*/

    Class_DrawOptions = rb_define_class_under(Class_Image, "DrawOptions", rb_cObject);

    rb_define_alloc_func(Class_DrawOptions, DrawOptions_alloc);

    rb_define_method(Class_DrawOptions, "initialize", DrawOptions_initialize, 0);

    SHARE_ATTR_WRITER(DrawOptions, Draw, affine)
    SHARE_ATTR_WRITER(DrawOptions, Draw, align)
    SHARE_ATTR_WRITER(DrawOptions, Draw, decorate)
    SHARE_ATTR_WRITER(DrawOptions, Draw, density)
    SHARE_ATTR_WRITER(DrawOptions, Draw, encoding)
    SHARE_ATTR_WRITER(DrawOptions, Draw, fill)
    SHARE_ATTR_WRITER(DrawOptions, Draw, fill_pattern)
    SHARE_ATTR_WRITER(DrawOptions, Draw, font)
    SHARE_ATTR_WRITER(DrawOptions, Draw, font_family)
    SHARE_ATTR_WRITER(DrawOptions, Draw, font_stretch)
    SHARE_ATTR_WRITER(DrawOptions, Draw, font_style)
    SHARE_ATTR_WRITER(DrawOptions, Draw, font_weight)
    SHARE_ATTR_WRITER(DrawOptions, Draw, gravity)
    SHARE_ATTR_WRITER(DrawOptions, Draw, pointsize)
    SHARE_ATTR_WRITER(DrawOptions, Draw, rotation)
    SHARE_ATTR_WRITER(DrawOptions, Draw, stroke)
    SHARE_ATTR_WRITER(DrawOptions, Draw, stroke_pattern)
    SHARE_ATTR_WRITER(DrawOptions, Draw, stroke_width)
    SHARE_ATTR_WRITER(DrawOptions, Draw, text_antialias)
    SHARE_ATTR_WRITER(DrawOptions, Draw, tile)
    SHARE_ATTR_WRITER(DrawOptions, Draw, undercolor)

    /*-----------------------------------------------------------------------*/
    /* Class Magick::Pixel                                                   */
    /*-----------------------------------------------------------------------*/

    Class_Pixel = rb_define_class_under(Module_Magick, "Pixel", rb_cObject);

    // include Observable in Pixel for Image::View class
    (void) rb_require("observer");
    observable = rb_const_get(rb_cObject, rb_intern("Observable"));
    rb_include_module(Class_Pixel, observable);

    // include Comparable
    rb_include_module(Class_Pixel, rb_mComparable);

    // Magick::Pixel has 4 constructors: "new" "from_color", "from_hsla",
    // and the deprecated "from_HSL".
    rb_define_alloc_func(Class_Pixel, Pixel_alloc);
    rb_define_singleton_method(Class_Pixel, "from_color", Pixel_from_color, 1);
    rb_define_singleton_method(Class_Pixel, "from_HSL", Pixel_from_HSL, 1);
    rb_define_singleton_method(Class_Pixel, "from_hsla", Pixel_from_hsla, -1);

    // Define the RGBA attributes
    DCL_ATTR_ACCESSOR(Pixel, red)
    DCL_ATTR_ACCESSOR(Pixel, green)
    DCL_ATTR_ACCESSOR(Pixel, blue)
    DCL_ATTR_ACCESSOR(Pixel, opacity)

    // Define the CMYK attributes
    DCL_ATTR_ACCESSOR(Pixel, cyan)
    DCL_ATTR_ACCESSOR(Pixel, magenta)
    DCL_ATTR_ACCESSOR(Pixel, yellow)
    DCL_ATTR_ACCESSOR(Pixel, black)


    // Define the instance methods
    rb_define_method(Class_Pixel, "<=>", Pixel_spaceship, 1);
    rb_define_method(Class_Pixel, "===", Pixel_case_eq, 1);
    rb_define_method(Class_Pixel, "eql?", Pixel_eql_q, 1);
    rb_define_method(Class_Pixel, "initialize", Pixel_initialize, -1);
    rb_define_method(Class_Pixel, "initialize_copy", Pixel_init_copy, 1);
    rb_define_method(Class_Pixel, "clone", Pixel_clone, 0);
    rb_define_method(Class_Pixel, "dup", Pixel_dup, 0);
    rb_define_method(Class_Pixel, "fcmp", Pixel_fcmp, -1);
    rb_define_method(Class_Pixel, "hash", Pixel_hash, 0);
    rb_define_method(Class_Pixel, "intensity", Pixel_intensity, 0);
    rb_define_method(Class_Pixel, "marshal_dump", Pixel_marshal_dump, 0);
    rb_define_method(Class_Pixel, "marshal_load", Pixel_marshal_load, 1);
    rb_define_method(Class_Pixel, "to_color", Pixel_to_color, -1);
    rb_define_method(Class_Pixel, "to_HSL", Pixel_to_HSL, 0);   // deprecated
    rb_define_method(Class_Pixel, "to_hsla", Pixel_to_hsla, 0);
    rb_define_method(Class_Pixel, "to_s", Pixel_to_s, 0);

    /*-----------------------------------------------------------------------*/
    /* Class Magick::ImageList::Montage methods                              */
    /*-----------------------------------------------------------------------*/

    Class_Montage = rb_define_class_under(Class_ImageList, "Montage", rb_cObject);

    rb_define_alloc_func(Class_Montage, Montage_alloc);

    rb_define_method(Class_Montage, "initialize", Montage_initialize, 0);
    rb_define_method(Class_Montage, "freeze", rm_no_freeze, 0);

    // These accessors supply optional arguments for Magick::ImageList::Montage.new
    DCL_ATTR_WRITER(Montage, background_color)
    DCL_ATTR_WRITER(Montage, border_color)
    DCL_ATTR_WRITER(Montage, border_width)
    DCL_ATTR_WRITER(Montage, compose)
    DCL_ATTR_WRITER(Montage, filename)
    DCL_ATTR_WRITER(Montage, fill)
    DCL_ATTR_WRITER(Montage, font)
    DCL_ATTR_WRITER(Montage, frame)
    DCL_ATTR_WRITER(Montage, geometry)
    DCL_ATTR_WRITER(Montage, gravity)
    DCL_ATTR_WRITER(Montage, matte_color)
    DCL_ATTR_WRITER(Montage, pointsize)
    DCL_ATTR_WRITER(Montage, shadow)
    DCL_ATTR_WRITER(Montage, stroke)
    DCL_ATTR_WRITER(Montage, texture)
    DCL_ATTR_WRITER(Montage, tile)
    DCL_ATTR_WRITER(Montage, title)

    /*-----------------------------------------------------------------------*/
    /* Class Magick::Image::Info                                             */
    /*-----------------------------------------------------------------------*/

    Class_Info = rb_define_class_under(Class_Image, "Info", rb_cObject);

    rb_define_alloc_func(Class_Info, Info_alloc);

    rb_define_method(Class_Info, "initialize", Info_initialize, 0);
    rb_define_method(Class_Info, "channel", Info_channel, -1);
    rb_define_method(Class_Info, "freeze", rm_no_freeze, 0);
    rb_define_method(Class_Info, "define", Info_define, -1);
    rb_define_method(Class_Info, "[]=", Info_aset, -1);
    rb_define_method(Class_Info, "[]", Info_aref, -1);
    rb_define_method(Class_Info, "undefine", Info_undefine, 2);

    DCL_ATTR_ACCESSOR(Info, antialias)
    DCL_ATTR_ACCESSOR(Info, attenuate)
    DCL_ATTR_ACCESSOR(Info, authenticate)
    DCL_ATTR_ACCESSOR(Info, background_color)
    DCL_ATTR_ACCESSOR(Info, border_color)
    DCL_ATTR_ACCESSOR(Info, caption)
    DCL_ATTR_ACCESSOR(Info, colorspace)
    DCL_ATTR_ACCESSOR(Info, comment)
    DCL_ATTR_ACCESSOR(Info, compression)
    DCL_ATTR_ACCESSOR(Info, delay)
    DCL_ATTR_ACCESSOR(Info, density)
    DCL_ATTR_ACCESSOR(Info, depth)
    DCL_ATTR_ACCESSOR(Info, dispose)
    DCL_ATTR_ACCESSOR(Info, dither)
    DCL_ATTR_ACCESSOR(Info, endian)
    DCL_ATTR_ACCESSOR(Info, extract)
    DCL_ATTR_ACCESSOR(Info, filename)
    DCL_ATTR_ACCESSOR(Info, fill)
    DCL_ATTR_ACCESSOR(Info, font)
    DCL_ATTR_ACCESSOR(Info, format)
    DCL_ATTR_ACCESSOR(Info, fuzz)
    DCL_ATTR_ACCESSOR(Info, gravity)
    DCL_ATTR_ACCESSOR(Info, group)
    DCL_ATTR_ACCESSOR(Info, image_type)
    DCL_ATTR_ACCESSOR(Info, interlace)
    DCL_ATTR_ACCESSOR(Info, label)
    DCL_ATTR_ACCESSOR(Info, matte_color)
    DCL_ATTR_WRITER(Info, monitor)
    DCL_ATTR_ACCESSOR(Info, monochrome)
    DCL_ATTR_ACCESSOR(Info, number_scenes)
    DCL_ATTR_ACCESSOR(Info, orientation)
    DCL_ATTR_ACCESSOR(Info, origin)         // new in 6.3.1
    DCL_ATTR_ACCESSOR(Info, page)
    DCL_ATTR_ACCESSOR(Info, pointsize)
    DCL_ATTR_ACCESSOR(Info, quality)
    DCL_ATTR_ACCESSOR(Info, sampling_factor)
    DCL_ATTR_ACCESSOR(Info, scene)
    DCL_ATTR_ACCESSOR(Info, server_name)
    DCL_ATTR_ACCESSOR(Info, size)
    DCL_ATTR_ACCESSOR(Info, stroke)
    DCL_ATTR_ACCESSOR(Info, stroke_width)
    DCL_ATTR_WRITER(Info, texture)
    DCL_ATTR_ACCESSOR(Info, tile_offset)
    DCL_ATTR_ACCESSOR(Info, transparent_color)
    DCL_ATTR_ACCESSOR(Info, undercolor)
    DCL_ATTR_ACCESSOR(Info, units)
    DCL_ATTR_ACCESSOR(Info, view)


    /*-----------------------------------------------------------------------*/
    /* Class Magick::Image::PolaroidOptions                                  */
    /*-----------------------------------------------------------------------*/

    Class_PolaroidOptions = rb_define_class_under(Class_Image, "PolaroidOptions", rb_cObject);

    rb_define_alloc_func(Class_PolaroidOptions, PolaroidOptions_alloc);

    rb_define_method(Class_PolaroidOptions, "initialize", PolaroidOptions_initialize, 0);

    DCL_ATTR_WRITER(PolaroidOptions, shadow_color)
    DCL_ATTR_WRITER(PolaroidOptions, border_color)
    // The other attribute writer methods are implemented by Draw's functions
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, align)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, decorate)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, density)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, encoding)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, fill)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, fill_pattern)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, font)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, font_family)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, font_stretch)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, font_style)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, font_weight)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, gravity)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, pointsize)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, stroke)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, stroke_pattern)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, stroke_width)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, text_antialias)
    SHARE_ATTR_WRITER(PolaroidOptions, Draw, undercolor)


    /*-----------------------------------------------------------------------*/
    /* Magick::******Fill classes and methods                                */
    /*-----------------------------------------------------------------------*/

    // class Magick::GradientFill
    Class_GradientFill = rb_define_class_under(Module_Magick, "GradientFill", rb_cObject);

    rb_define_alloc_func(Class_GradientFill, GradientFill_alloc);

    rb_define_method(Class_GradientFill, "initialize", GradientFill_initialize, 6);
    rb_define_method(Class_GradientFill, "fill", GradientFill_fill, 1);

    // class Magick::TextureFill
    Class_TextureFill = rb_define_class_under(Module_Magick, "TextureFill", rb_cObject);

    rb_define_alloc_func(Class_TextureFill, TextureFill_alloc);

    rb_define_method(Class_TextureFill, "initialize", TextureFill_initialize, 1);
    rb_define_method(Class_TextureFill, "fill", TextureFill_fill, 1);

    /*-----------------------------------------------------------------------*/
    /* Class Magick::ImageMagickError < StandardError                        */
    /* Class Magick::FatalImageMagickError < StandardError                   */
    /*-----------------------------------------------------------------------*/

    Class_ImageMagickError = rb_define_class_under(Module_Magick, "ImageMagickError", rb_eStandardError);
    rb_define_method(Class_ImageMagickError, "initialize", ImageMagickError_initialize, -1);
    rb_define_attr(Class_ImageMagickError, MAGICK_LOC, True, False);

    Class_FatalImageMagickError = rb_define_class_under(Module_Magick, "FatalImageMagickError", rb_eStandardError);


    /*-----------------------------------------------------------------------*/
    /* Class Magick::DestroyedImageError < StandardError                     */
    /*-----------------------------------------------------------------------*/
    Class_DestroyedImageError = rb_define_class_under(Module_Magick, "DestroyedImageError", rb_eStandardError);


    // Miscellaneous fixed-point constants
    DEF_CONST(QuantumRange);
    DEF_CONST(MAGICKCORE_QUANTUM_DEPTH);
    DEF_CONST(OpaqueOpacity);
    DEF_CONST(TransparentOpacity);

    version_constants();
    features_constant();

    /*-----------------------------------------------------------------------*/
    /* Class Magick::Enum                                                    */
    /*-----------------------------------------------------------------------*/

    // includes Comparable
    Class_Enum = rb_define_class_under(Module_Magick, "Enum", rb_cObject);
    rb_include_module(Class_Enum, rb_mComparable);

    rb_define_alloc_func(Class_Enum, Enum_alloc);

    rb_define_method(Class_Enum, "initialize", Enum_initialize, 2);
    rb_define_method(Class_Enum, "to_s", Enum_to_s, 0);
    rb_define_method(Class_Enum, "to_i", Enum_to_i, 0);
    rb_define_method(Class_Enum, "<=>", Enum_spaceship, 1);
    rb_define_method(Class_Enum, "===", Enum_case_eq, 1);

    // AlignType constants
    DEF_ENUM(AlignType)
        ENUMERATOR(UndefinedAlign)
        ENUMERATOR(LeftAlign)
        ENUMERATOR(CenterAlign)
        ENUMERATOR(RightAlign)
    END_ENUM

    // AlphaChannelType constants
    DEF_ENUM(AlphaChannelType)
        ENUMERATOR(UndefinedAlphaChannel)
        ENUMERATOR(ActivateAlphaChannel)
        ENUMERATOR(DeactivateAlphaChannel)
        ENUMERATOR(ResetAlphaChannel)  /* deprecated */
        ENUMERATOR(SetAlphaChannel)
#if defined(HAVE_ENUM_COPYALPHACHANNEL)
        ENUMERATOR(CopyAlphaChannel)
        ENUMERATOR(ExtractAlphaChannel)
        ENUMERATOR(OpaqueAlphaChannel)
        ENUMERATOR(ShapeAlphaChannel)
        ENUMERATOR(TransparentAlphaChannel)
#endif
#if defined(HAVE_ENUM_BACKGROUNDALPHACHANNEL)
        ENUMERATOR(BackgroundAlphaChannel)
#endif
    END_ENUM

    // AnchorType constants (for Draw#text_anchor - these are not defined by ImageMagick)
    DEF_ENUM(AnchorType)
        ENUMERATOR(StartAnchor)
        ENUMERATOR(MiddleAnchor)
        ENUMERATOR(EndAnchor)
    END_ENUM

    // ChannelType constants
    DEF_ENUM(ChannelType)
        ENUMERATOR(UndefinedChannel)
        ENUMERATOR(RedChannel)
        ENUMERATOR(CyanChannel)
        ENUMERATOR(GreenChannel)
        ENUMERATOR(MagentaChannel)
        ENUMERATOR(BlueChannel)
        ENUMERATOR(YellowChannel)
        ENUMERATOR(OpacityChannel)


        ENUMERATOR(BlackChannel)
        ENUMERATOR(MatteChannel)
        ENUMERATOR(IndexChannel)
        ENUMERATOR(GrayChannel)
        ENUMERATOR(AllChannels)

        // Define alternate names for ChannelType enums for Image::Info#channel=
        // AlphaChannel == OpacityChannel
        _enum = rm_enum_new(Class_ChannelType, ID2SYM(rb_intern("AlphaChannel")), INT2FIX(OpacityChannel));
        rb_define_const(Module_Magick, "AlphaChannel", _enum);

        // DefaultChannels
        _enum = rm_enum_new(Class_ChannelType, ID2SYM(rb_intern("DefaultChannels")), INT2FIX(0xff & ~OpacityChannel));
        rb_define_const(Module_Magick, "DefaultChannels", _enum);

        // HueChannel == RedChannel
        _enum = rm_enum_new(Class_ChannelType, ID2SYM(rb_intern("HueChannel")), INT2FIX(RedChannel));
        rb_define_const(Module_Magick, "HueChannel", _enum);

        // LuminosityChannel = BlueChannel
        _enum = rm_enum_new(Class_ChannelType, ID2SYM(rb_intern("LuminosityChannel")), INT2FIX(BlueChannel));
        rb_define_const(Module_Magick, "LuminosityChannel", _enum);

        // SaturationChannel = GreenChannel
        _enum = rm_enum_new(Class_ChannelType, ID2SYM(rb_intern("SaturationChannel")), INT2FIX(GreenChannel));
        rb_define_const(Module_Magick, "SaturationChannel", _enum);


    END_ENUM

    // ClassType constants
    DEF_ENUM(ClassType)
        ENUMERATOR(UndefinedClass)
        ENUMERATOR(PseudoClass)
        ENUMERATOR(DirectClass)
    END_ENUM

    // ColorspaceType constants
    DEF_ENUM(ColorspaceType)
        ENUMERATOR(UndefinedColorspace)
        ENUMERATOR(RGBColorspace)
        ENUMERATOR(GRAYColorspace)
        ENUMERATOR(TransparentColorspace)
        ENUMERATOR(OHTAColorspace)
        ENUMERATOR(XYZColorspace)
        ENUMERATOR(YCbCrColorspace)
        ENUMERATOR(YCCColorspace)
        ENUMERATOR(YIQColorspace)
        ENUMERATOR(YPbPrColorspace)
        ENUMERATOR(YUVColorspace)
        ENUMERATOR(CMYKColorspace)
        rb_define_const(Module_Magick, "SRGBColorspace"
                      , rm_enum_new(Class_ColorspaceType
                      , ID2SYM(rb_intern("SRGBColorspace"))
                      , INT2FIX(sRGBColorspace)));
        ENUMERATOR(HSLColorspace)
        ENUMERATOR(HWBColorspace)
        ENUMERATOR(HSBColorspace)
        ENUMERATOR(LabColorspace)
        ENUMERATOR(Rec601LumaColorspace)
        ENUMERATOR(Rec601YCbCrColorspace)
        ENUMERATOR(Rec709LumaColorspace)
        ENUMERATOR(Rec709YCbCrColorspace)
        ENUMERATOR(LogColorspace)
        ENUMERATOR(CMYColorspace)
    END_ENUM

    // ComplianceType constants are defined as enums but used as bit flags
    DEF_ENUM(ComplianceType)
        ENUMERATOR(UndefinedCompliance)

        // AllCompliance is 0xffff, not too useful for us!
        rb_define_const(Module_Magick, "AllCompliance"
                  , rm_enum_new(Class_ComplianceType
                  , ID2SYM(rb_intern("AllCompliance"))
                  , INT2FIX(SVGCompliance|X11Compliance|XPMCompliance)));

        ENUMERATOR(NoCompliance)
        ENUMERATOR(SVGCompliance)
        ENUMERATOR(X11Compliance)
        ENUMERATOR(XPMCompliance)
    END_ENUM

    // CompositeOperator constants
    DEF_ENUM(CompositeOperator)
        ENUMERATOR(UndefinedCompositeOp)
        ENUMERATOR(NoCompositeOp)
        ENUMERATOR(AddCompositeOp)
        ENUMERATOR(AtopCompositeOp)
        ENUMERATOR(BlendCompositeOp)
#if defined(HAVE_ENUM_BLURCOMPOSITEOP)
        ENUMERATOR(BlurCompositeOp)
#endif
        ENUMERATOR(BumpmapCompositeOp)
        ENUMERATOR(ChangeMaskCompositeOp)
        ENUMERATOR(ClearCompositeOp)
        ENUMERATOR(ColorBurnCompositeOp)
        ENUMERATOR(ColorDodgeCompositeOp)
        ENUMERATOR(ColorizeCompositeOp)
        ENUMERATOR(CopyBlackCompositeOp)
        ENUMERATOR(CopyBlueCompositeOp)
        ENUMERATOR(CopyCompositeOp)
        ENUMERATOR(CopyCyanCompositeOp)
        ENUMERATOR(CopyGreenCompositeOp)
        ENUMERATOR(CopyMagentaCompositeOp)
        ENUMERATOR(CopyOpacityCompositeOp)
        ENUMERATOR(CopyRedCompositeOp)
        ENUMERATOR(CopyYellowCompositeOp)
        ENUMERATOR(DarkenCompositeOp)
#if defined(HAVE_ENUM_DISTORTCOMPOSITEOP)
        ENUMERATOR(DistortCompositeOp)
#endif
        ENUMERATOR(DivideCompositeOp)
        ENUMERATOR(DstAtopCompositeOp)
        ENUMERATOR(DstCompositeOp)
        ENUMERATOR(DstInCompositeOp)
        ENUMERATOR(DstOutCompositeOp)
        ENUMERATOR(DstOverCompositeOp)
        ENUMERATOR(DifferenceCompositeOp)
        ENUMERATOR(DisplaceCompositeOp)
        ENUMERATOR(DissolveCompositeOp)
        ENUMERATOR(ExclusionCompositeOp)
        ENUMERATOR(HardLightCompositeOp)
        ENUMERATOR(HueCompositeOp)
        ENUMERATOR(InCompositeOp)
        ENUMERATOR(LightenCompositeOp)
#if defined(HAVE_ENUM_LINEARBURNCOMPOSITEOP)
        ENUMERATOR(LinearBurnCompositeOp)
#endif
#if defined(HAVE_ENUM_LINEARDODGECOMPOSITEOP)
        ENUMERATOR(LinearDodgeCompositeOp)
#endif
        ENUMERATOR(LinearLightCompositeOp)
        ENUMERATOR(LuminizeCompositeOp)
        ENUMERATOR(MinusCompositeOp)
        ENUMERATOR(ModulateCompositeOp)
        ENUMERATOR(MultiplyCompositeOp)
        ENUMERATOR(OutCompositeOp)
        ENUMERATOR(OverCompositeOp)
        ENUMERATOR(OverlayCompositeOp)
#if defined(HAVE_ENUM_PEGTOPLIGHTCOMPOSITEOP)
        ENUMERATOR(PegtopLightCompositeOp)
#endif
#if defined(HAVE_ENUM_PINLIGHTCOMPOSITEOP)
        ENUMERATOR(PinLightCompositeOp)
#endif
        ENUMERATOR(PlusCompositeOp)
        ENUMERATOR(ReplaceCompositeOp)    // synonym for CopyCompositeOp
        ENUMERATOR(SaturateCompositeOp)
        ENUMERATOR(ScreenCompositeOp)
        ENUMERATOR(SoftLightCompositeOp)
        ENUMERATOR(SrcAtopCompositeOp)
        ENUMERATOR(SrcCompositeOp)
        ENUMERATOR(SrcInCompositeOp)
        ENUMERATOR(SrcOutCompositeOp)
        ENUMERATOR(SrcOverCompositeOp)
        ENUMERATOR(SubtractCompositeOp)
        ENUMERATOR(ThresholdCompositeOp)
#if defined(HAVE_ENUM_VIVIDLIGHTCOMPOSITEOP)
        ENUMERATOR(VividLightCompositeOp)
#endif
        ENUMERATOR(XorCompositeOp)
    END_ENUM

    // CompressionType constants
    DEF_ENUM(CompressionType)
        ENUMERATOR(UndefinedCompression)
        ENUMERATOR(NoCompression)
#if defined(HAVE_ENUM_B44COMPRESSION)
        ENUMERATOR(B44Compression)
#endif
#if defined(HAVE_ENUM_B44ACOMPRESSION)
        ENUMERATOR(B44ACompression)
#endif
        ENUMERATOR(BZipCompression)
#if defined(HAVE_ENUM_DXT1COMPRESSION)
        ENUMERATOR(DXT1Compression)
#endif
#if defined(HAVE_ENUM_DXT3COMPRESSION)
        ENUMERATOR(DXT3Compression)
#endif
#if defined(HAVE_ENUM_DXT5COMPRESSION)
        ENUMERATOR(DXT5Compression)
#endif
        ENUMERATOR(FaxCompression)
        ENUMERATOR(Group4Compression)
        ENUMERATOR(JPEGCompression)
        ENUMERATOR(JPEG2000Compression)
        ENUMERATOR(LosslessJPEGCompression)
        ENUMERATOR(LZWCompression)
#if defined(HAVE_ENUM_PIZCOMPRESSION)
        ENUMERATOR(PizCompression)
#endif
#if defined(HAVE_ENUM_PXR24COMPRESSION)
        ENUMERATOR(Pxr24Compression)
#endif
        ENUMERATOR(RLECompression)
        ENUMERATOR(ZipCompression)
#if defined(HAVE_ENUM_ZIPSCOMPRESSION)
        ENUMERATOR(ZipSCompression)
#endif
    END_ENUM

    // DecorationType constants
    DEF_ENUM(DecorationType)
        ENUMERATOR(NoDecoration)
        ENUMERATOR(UnderlineDecoration)
        ENUMERATOR(OverlineDecoration)
        ENUMERATOR(LineThroughDecoration)
    END_ENUM

    // DisposeType constants
    DEF_ENUM(DisposeType)
        ENUMERATOR(UndefinedDispose)
        ENUMERATOR(BackgroundDispose)
        ENUMERATOR(NoneDispose)
        ENUMERATOR(PreviousDispose)
    END_ENUM

    // DistortImage "method" argument values
    DEF_ENUM(DistortImageMethod)
        ENUMERATOR(UndefinedDistortion)
        ENUMERATOR(AffineDistortion)
        ENUMERATOR(AffineProjectionDistortion)
        ENUMERATOR(ArcDistortion)
#if defined(HAVE_ENUM_POLARDISTORTION)
        ENUMERATOR(PolarDistortion)
#endif
#if defined(HAVE_ENUM_DEPOLARDISTORTION)
        ENUMERATOR(DePolarDistortion)
#endif
#if defined(HAVE_ENUM_BARRELDISTORTION)
        ENUMERATOR(BarrelDistortion)
#endif
        ENUMERATOR(BilinearDistortion)
#if defined(HAVE_ENUM_BILINEARFORWARDDISTORTION)
        ENUMERATOR(BilinearForwardDistortion)
#endif
#if defined(HAVE_ENUM_BILINEARREVERSEDISTORTION)
        ENUMERATOR(BilinearReverseDistortion)
#endif
        ENUMERATOR(PerspectiveDistortion)
        ENUMERATOR(PerspectiveProjectionDistortion)
#if defined(HAVE_ENUM_POLYNOMIALDISTORTION)
        ENUMERATOR(PolynomialDistortion)
#endif
        ENUMERATOR(ScaleRotateTranslateDistortion)
#if defined(HAVE_ENUM_SHEPARDSDISTORTION)
        ENUMERATOR(ShepardsDistortion)
#endif
#if defined(HAVE_ENUM_BARRELINVERSEDISTORTION)
        ENUMERATOR(BarrelInverseDistortion)
#endif
    END_ENUM

#if defined(HAVE_TYPE_DITHERMETHOD)
    DEF_ENUM(DitherMethod)
        ENUMERATOR(UndefinedDitherMethod)
#if defined(HAVE_ENUM_NODITHERMETHOD)
        ENUMERATOR(NoDitherMethod)
#endif
        ENUMERATOR(RiemersmaDitherMethod)
        ENUMERATOR(FloydSteinbergDitherMethod)
    END_ENUM
#endif

    DEF_ENUM(EndianType)
        ENUMERATOR(UndefinedEndian)
        ENUMERATOR(LSBEndian)
        ENUMERATOR(MSBEndian)
    END_ENUM

    // FilterTypes constants
    DEF_ENUM(FilterTypes)
        ENUMERATOR(UndefinedFilter)
        ENUMERATOR(PointFilter)
        ENUMERATOR(BoxFilter)
        ENUMERATOR(TriangleFilter)
        ENUMERATOR(HermiteFilter)
        ENUMERATOR(HanningFilter)
        ENUMERATOR(HammingFilter)
        ENUMERATOR(BlackmanFilter)
        ENUMERATOR(GaussianFilter)
        ENUMERATOR(QuadraticFilter)
        ENUMERATOR(CubicFilter)
        ENUMERATOR(CatromFilter)
        ENUMERATOR(MitchellFilter)
        ENUMERATOR(LanczosFilter)
        ENUMERATOR(BesselFilter)
        ENUMERATOR(SincFilter)
#if defined(HAVE_ENUM_KAISERFILTER)
        ENUMERATOR(KaiserFilter)
#endif
#if defined(HAVE_ENUM_WELSHFILTER)
        ENUMERATOR(WelshFilter)
#endif
#if defined(HAVE_ENUM_PARZENFILTER)
        ENUMERATOR(ParzenFilter)
#endif
#if defined(HAVE_ENUM_LAGRANGEFILTER)
        ENUMERATOR(LagrangeFilter)
#endif
#if defined(HAVE_ENUM_BOHMANFILTER)
        ENUMERATOR(BohmanFilter)
#endif
#if defined(HAVE_ENUM_BARTLETTFILTER)
        ENUMERATOR(BartlettFilter)
#endif
    END_ENUM

    // GravityType constants
    DEF_ENUM(GravityType)
        ENUMERATOR(UndefinedGravity)
        ENUMERATOR(ForgetGravity)
        ENUMERATOR(NorthWestGravity)
        ENUMERATOR(NorthGravity)
        ENUMERATOR(NorthEastGravity)
        ENUMERATOR(WestGravity)
        ENUMERATOR(CenterGravity)
        ENUMERATOR(EastGravity)
        ENUMERATOR(SouthWestGravity)
        ENUMERATOR(SouthGravity)
        ENUMERATOR(SouthEastGravity)
        ENUMERATOR(StaticGravity)
    END_ENUM

    // ImageType constants
    DEF_ENUM(ImageType)
        ENUMERATOR(UndefinedType)
        ENUMERATOR(BilevelType)
        ENUMERATOR(GrayscaleType)
        ENUMERATOR(GrayscaleMatteType)
        ENUMERATOR(PaletteType)
        ENUMERATOR(PaletteMatteType)
        ENUMERATOR(TrueColorType)
        ENUMERATOR(TrueColorMatteType)
        ENUMERATOR(ColorSeparationType)
        ENUMERATOR(ColorSeparationMatteType)
        ENUMERATOR(OptimizeType)
        ENUMERATOR(PaletteBilevelMatteType)
    END_ENUM

    // InterlaceType constants
    DEF_ENUM(InterlaceType)
        ENUMERATOR(UndefinedInterlace)
        ENUMERATOR(NoInterlace)
        ENUMERATOR(LineInterlace)
        ENUMERATOR(PlaneInterlace)
        ENUMERATOR(PartitionInterlace)
        ENUMERATOR(GIFInterlace)
        ENUMERATOR(JPEGInterlace)
        ENUMERATOR(PNGInterlace)
    END_ENUM

    DEF_ENUM(InterpolatePixelMethod)
        ENUMERATOR(UndefinedInterpolatePixel)
        ENUMERATOR(AverageInterpolatePixel)
        ENUMERATOR(BicubicInterpolatePixel)
        ENUMERATOR(BilinearInterpolatePixel)
        ENUMERATOR(FilterInterpolatePixel)
        ENUMERATOR(IntegerInterpolatePixel)
        ENUMERATOR(MeshInterpolatePixel)
        ENUMERATOR(NearestNeighborInterpolatePixel)
#if defined(HAVE_SPLINEINTERPOLATEPIXEL)
        ENUMERATOR(SplineInterpolatePixel)
#endif
    END_ENUM

#if defined(HAVE_TYPE_MAGICKFUNCTION)
    DEF_ENUM(MagickFunction)
        ENUMERATOR(UndefinedFunction)
        ENUMERATOR(PolynomialFunction)
        ENUMERATOR(SinusoidFunction)
#if defined(HAVE_ENUM_ARCSINFUNCTION)
        ENUMERATOR(ArcsinFunction)
#endif
#if defined(HAVE_ENUM_ARCTANFUNCTION)
        ENUMERATOR(ArctanFunction)
#endif
    END_ENUM
#endif

#if defined(HAVE_TYPE_IMAGELAYERMETHOD)
    DEF_ENUM(ImageLayerMethod)
#else
    DEF_ENUM(MagickLayerMethod)
#endif
        ENUMERATOR(UndefinedLayer)
        ENUMERATOR(CompareAnyLayer)
        ENUMERATOR(CompareClearLayer)
        ENUMERATOR(CompareOverlayLayer)
        ENUMERATOR(OptimizeLayer)
        ENUMERATOR(OptimizePlusLayer)
        ENUMERATOR(CoalesceLayer)
        ENUMERATOR(DisposeLayer)
        ENUMERATOR(OptimizeTransLayer)
#if defined(HAVE_ENUM_OPTIMIZEIMAGELAYER)
        ENUMERATOR(OptimizeImageLayer)
#endif
        ENUMERATOR(RemoveDupsLayer)
        ENUMERATOR(RemoveZeroLayer)
        ENUMERATOR(CompositeLayer)
#if defined(HAVE_ENUM_MERGELAYER)
        ENUMERATOR(MergeLayer)
#endif
#if defined(HAVE_ENUM_MOSAICLAYER)
        ENUMERATOR(MosaicLayer)
#endif
#if defined(HAVE_ENUM_FLATTENLAYER)
        ENUMERATOR(FlattenLayer)
#endif
#if defined(HAVE_ENUM_TRIMBOUNDSLAYER)
        ENUMERATOR(TrimBoundsLayer)
#endif
    END_ENUM

    DEF_ENUM(MetricType)
        ENUMERATOR(UndefinedMetric)
        ENUMERATOR(AbsoluteErrorMetric)
        ENUMERATOR(MeanAbsoluteErrorMetric)
        ENUMERATOR(MeanErrorPerPixelMetric)
        ENUMERATOR(MeanSquaredErrorMetric)
        ENUMERATOR(PeakAbsoluteErrorMetric)
        ENUMERATOR(PeakSignalToNoiseRatioMetric)
        ENUMERATOR(RootMeanSquaredErrorMetric)
    END_ENUM

    // NoiseType constants
    DEF_ENUM(NoiseType)
        ENUMERATOR(UniformNoise)
        ENUMERATOR(GaussianNoise)
        ENUMERATOR(MultiplicativeGaussianNoise)
        ENUMERATOR(ImpulseNoise)
        ENUMERATOR(LaplacianNoise)
        ENUMERATOR(PoissonNoise)
        ENUMERATOR(RandomNoise)
    END_ENUM

    // Orientation constants
    DEF_ENUM(OrientationType)
        ENUMERATOR(UndefinedOrientation)
        ENUMERATOR(TopLeftOrientation)
        ENUMERATOR(TopRightOrientation)
        ENUMERATOR(BottomRightOrientation)
        ENUMERATOR(BottomLeftOrientation)
        ENUMERATOR(LeftTopOrientation)
        ENUMERATOR(RightTopOrientation)
        ENUMERATOR(RightBottomOrientation)
        ENUMERATOR(LeftBottomOrientation)
    END_ENUM

    // Paint method constants
    DEF_ENUM(PaintMethod)
        ENUMERATOR(PointMethod)
        ENUMERATOR(ReplaceMethod)
        ENUMERATOR(FloodfillMethod)
        ENUMERATOR(FillToBorderMethod)
        ENUMERATOR(ResetMethod)
    END_ENUM

    // PreviewType
    DEF_ENUM(PreviewType)
        ENUMERATOR(UndefinedPreview)
        ENUMERATOR(RotatePreview)
        ENUMERATOR(ShearPreview)
        ENUMERATOR(RollPreview)
        ENUMERATOR(HuePreview)
        ENUMERATOR(SaturationPreview)
        ENUMERATOR(BrightnessPreview)
        ENUMERATOR(GammaPreview)
        ENUMERATOR(SpiffPreview)
        ENUMERATOR(DullPreview)
        ENUMERATOR(GrayscalePreview)
        ENUMERATOR(QuantizePreview)
        ENUMERATOR(DespecklePreview)
        ENUMERATOR(ReduceNoisePreview)
        ENUMERATOR(AddNoisePreview)
        ENUMERATOR(SharpenPreview)
        ENUMERATOR(BlurPreview)
        ENUMERATOR(ThresholdPreview)
        ENUMERATOR(EdgeDetectPreview)
        ENUMERATOR(SpreadPreview)
        ENUMERATOR(SolarizePreview)
        ENUMERATOR(ShadePreview)
        ENUMERATOR(RaisePreview)
        ENUMERATOR(SegmentPreview)
        ENUMERATOR(SwirlPreview)
        ENUMERATOR(ImplodePreview)
        ENUMERATOR(WavePreview)
        ENUMERATOR(OilPaintPreview)
        ENUMERATOR(CharcoalDrawingPreview)
        ENUMERATOR(JPEGPreview)
    END_ENUM

    DEF_ENUM(QuantumExpressionOperator)
        ENUMERATOR(UndefinedQuantumOperator)
        ENUMERATOR(AddQuantumOperator)
        ENUMERATOR(AndQuantumOperator)
        ENUMERATOR(DivideQuantumOperator)
        ENUMERATOR(LShiftQuantumOperator)
        ENUMERATOR(MaxQuantumOperator)
        ENUMERATOR(MinQuantumOperator)
        ENUMERATOR(MultiplyQuantumOperator)
        ENUMERATOR(OrQuantumOperator)
        ENUMERATOR(RShiftQuantumOperator)
        ENUMERATOR(SubtractQuantumOperator)
        ENUMERATOR(XorQuantumOperator)
#if defined(HAVE_ENUM_POWEVALUATEOPERATOR)
        ENUMERATOR(PowQuantumOperator)
#endif
#if defined(HAVE_ENUM_LOGEVALUATEOPERATOR)
        ENUMERATOR(LogQuantumOperator)
#endif
#if defined(HAVE_ENUM_THRESHOLDEVALUATEOPERATOR)
        ENUMERATOR(ThresholdQuantumOperator)
#endif
#if defined(HAVE_ENUM_THRESHOLDBLACKEVALUATEOPERATOR)
        ENUMERATOR(ThresholdBlackQuantumOperator)
#endif
#if defined(HAVE_ENUM_THRESHOLDWHITEEVALUATEOPERATOR)
        ENUMERATOR(ThresholdWhiteQuantumOperator)
#endif
#if defined(HAVE_ENUM_GAUSSIANNOISEEVALUATEOPERATOR)
        ENUMERATOR(GaussianNoiseQuantumOperator)
#endif
#if defined(HAVE_ENUM_IMPULSENOISEEVALUATEOPERATOR)
        ENUMERATOR(ImpulseNoiseQuantumOperator)
#endif
#if defined(HAVE_ENUM_LAPLACIANNOISEEVALUATEOPERATOR)
        ENUMERATOR(LaplacianNoiseQuantumOperator)
#endif
#if defined(HAVE_ENUM_MULTIPLICATIVENOISEEVALUATEOPERATOR)
        ENUMERATOR(MultiplicativeNoiseQuantumOperator)
#endif
#if defined(HAVE_ENUM_POISSONNOISEEVALUATEOPERATOR)
        ENUMERATOR(PoissonNoiseQuantumOperator)
#endif
#if defined(HAVE_ENUM_UNIFORMNOISEEVALUATEOPERATOR)
        ENUMERATOR(UniformNoiseQuantumOperator)
#endif
#if defined(HAVE_ENUM_COSINEEVALUATEOPERATOR)
        ENUMERATOR(CosineQuantumOperator)
#endif
#if defined(HAVE_ENUM_SINEEVALUATEOPERATOR)
        ENUMERATOR(SineQuantumOperator)
#endif
#if defined(HAVE_ENUM_ADDMODULUSEVALUATEOPERATOR)
        ENUMERATOR(AddModulusQuantumOperator)
#endif
    END_ENUM

    // RenderingIntent
    DEF_ENUM(RenderingIntent)
        ENUMERATOR(UndefinedIntent)
        ENUMERATOR(SaturationIntent)
        ENUMERATOR(PerceptualIntent)
        ENUMERATOR(AbsoluteIntent)
        ENUMERATOR(RelativeIntent)
    END_ENUM

    // ResolutionType constants
    DEF_ENUM(ResolutionType)
        ENUMERATOR(UndefinedResolution)
        ENUMERATOR(PixelsPerInchResolution)
        ENUMERATOR(PixelsPerCentimeterResolution)
    END_ENUM

#if defined(HAVE_SPARSECOLORIMAGE)
    DEF_ENUM(SparseColorMethod)
        ENUMERATOR(UndefinedColorInterpolate)
        ENUMERATOR(BarycentricColorInterpolate)
        ENUMERATOR(BilinearColorInterpolate)
        //ENUMERATOR(PolynomialColorInterpolate)
        ENUMERATOR(ShepardsColorInterpolate)
        ENUMERATOR(VoronoiColorInterpolate)
    END_ENUM
#endif

    // SpreadMethod
    DEF_ENUM(SpreadMethod)
        ENUMERATOR(UndefinedSpread)
        ENUMERATOR(PadSpread)
        ENUMERATOR(ReflectSpread)
        ENUMERATOR(RepeatSpread)
    END_ENUM

    // StorageType
    DEF_ENUM(StorageType)
        ENUMERATOR(UndefinedPixel)
        ENUMERATOR(CharPixel)
        ENUMERATOR(DoublePixel)
        ENUMERATOR(FloatPixel)
        ENUMERATOR(IntegerPixel)
        ENUMERATOR(LongPixel)
        ENUMERATOR(QuantumPixel)
        ENUMERATOR(ShortPixel)
    END_ENUM

    // StretchType constants
    DEF_ENUM(StretchType)
        ENUMERATOR(NormalStretch)
        ENUMERATOR(UltraCondensedStretch)
        ENUMERATOR(ExtraCondensedStretch)
        ENUMERATOR(CondensedStretch)
        ENUMERATOR(SemiCondensedStretch)
        ENUMERATOR(SemiExpandedStretch)
        ENUMERATOR(ExpandedStretch)
        ENUMERATOR(ExtraExpandedStretch)
        ENUMERATOR(UltraExpandedStretch)
        ENUMERATOR(AnyStretch)
    END_ENUM

    // StyleType constants
    DEF_ENUM(StyleType)
        ENUMERATOR(NormalStyle)
        ENUMERATOR(ItalicStyle)
        ENUMERATOR(ObliqueStyle)
        ENUMERATOR(AnyStyle)
    END_ENUM

    // VirtualPixelMethod
    DEF_ENUM(VirtualPixelMethod)
        ENUMERATOR(UndefinedVirtualPixelMethod)
        ENUMERATOR(EdgeVirtualPixelMethod)
        ENUMERATOR(MirrorVirtualPixelMethod)
        ENUMERATOR(TileVirtualPixelMethod)
        ENUMERATOR(TransparentVirtualPixelMethod)
        ENUMERATOR(BackgroundVirtualPixelMethod)
        ENUMERATOR(DitherVirtualPixelMethod)
        ENUMERATOR(RandomVirtualPixelMethod)
        ENUMERATOR(ConstantVirtualPixelMethod)
        ENUMERATOR(MaskVirtualPixelMethod)
        ENUMERATOR(BlackVirtualPixelMethod)
        ENUMERATOR(GrayVirtualPixelMethod)
        ENUMERATOR(WhiteVirtualPixelMethod)
#if defined(HAVE_ENUM_HORIZONTALTILEVIRTUALPIXELMETHOD)
        ENUMERATOR(HorizontalTileVirtualPixelMethod)
#endif
#if defined(HAVE_ENUM_VERTICALTILEVIRTUALPIXELMETHOD)
        ENUMERATOR(VerticalTileVirtualPixelMethod)
#endif
#if defined(HAVE_ENUM_HORIZONTALTILEEDGEVIRTUALPIXELMETHOD)
        ENUMERATOR(HorizontalTileEdgeVirtualPixelMethod)
#endif
#if defined(HAVE_ENUM_VERTICALTILEEDGEVIRTUALPIXELMETHOD)
        ENUMERATOR(VerticalTileEdgeVirtualPixelMethod)
#endif
#if defined(HAVE_ENUM_CHECKERTILEVIRTUALPIXELMETHOD)
        ENUMERATOR(CheckerTileVirtualPixelMethod)
#endif
    END_ENUM
    // WeightType constants
    DEF_ENUM(WeightType)
        ENUMERATOR(AnyWeight)
        ENUMERATOR(NormalWeight)
        ENUMERATOR(BoldWeight)
        ENUMERATOR(BolderWeight)
        ENUMERATOR(LighterWeight)
    END_ENUM

    /*-----------------------------------------------------------------------*/
    /* Struct classes                                                        */
    /*-----------------------------------------------------------------------*/

    // Pass NULL as the structure name to keep them from polluting the Struct
    // namespace. The only way to use these classes is via the Magick:: namespace.

    // Magick::AffineMatrix
    Class_AffineMatrix = rb_struct_define(NULL, "sx", "rx", "ry", "sy", "tx", "ty", NULL);
    rb_define_const(Module_Magick, "AffineMatrix", Class_AffineMatrix);

    // Magick::Primary
    Class_Primary = rb_struct_define(NULL, "x", "y", "z", NULL);
    rb_define_method(Class_Primary, "to_s", PrimaryInfo_to_s, 0);
    rb_define_const(Module_Magick, "Primary", Class_Primary);

    // Magick::Chromaticity
    Class_Chromaticity = rb_struct_define(NULL
                                          , "red_primary"
                                          , "green_primary"
                                          , "blue_primary"
                                          , "white_point"
                                          , NULL);
    rb_define_method(Class_Chromaticity, "to_s", ChromaticityInfo_to_s, 0);
    rb_define_const(Module_Magick, "Chromaticity", Class_Chromaticity);

    // Magick::Color
    Class_Color = rb_struct_define(NULL, "name", "compliance", "color", NULL);
    rb_define_method(Class_Color, "to_s", Color_to_s, 0);
    rb_define_const(Module_Magick, "Color", Class_Color);

    // Magick::Point
    Class_Point = rb_struct_define(NULL, "x", "y", NULL);
    rb_define_const(Module_Magick, "Point", Class_Point);

    // Magick::Rectangle
    Class_Rectangle = rb_struct_define(NULL, "width", "height", "x", "y", NULL);
    rb_define_method(Class_Rectangle, "to_s", RectangleInfo_to_s, 0);
    rb_define_const(Module_Magick, "Rectangle", Class_Rectangle);

    // Magick::Segment
    Class_Segment = rb_struct_define(NULL, "x1", "y1", "x2", "y2", NULL);
    rb_define_method(Class_Segment, "to_s", SegmentInfo_to_s, 0);
    rb_define_const(Module_Magick, "Segment", Class_Segment);

    // Magick::Font
    Class_Font = rb_struct_define(NULL, "name", "description",
                                  "family", "style", "stretch", "weight",
                                  "encoding", "foundry", "format", NULL);
    rb_define_method(Class_Font, "to_s", Font_to_s, 0);
    rb_define_const(Module_Magick, "Font", Class_Font);

    // Magick::TypeMetric
    Class_TypeMetric = rb_struct_define(NULL, "pixels_per_em", "ascent", "descent",
                                        "width", "height", "max_advance", "bounds",
                                        "underline_position", "underline_thickness", NULL);
    rb_define_method(Class_TypeMetric, "to_s", TypeMetric_to_s, 0);
    rb_define_const(Module_Magick, "TypeMetric", Class_TypeMetric);


    /*-----------------------------------------------------------------------*/
    /* Error handlers                                                        */
    /*-----------------------------------------------------------------------*/

    SetFatalErrorHandler(rm_fatal_error_handler);
    SetErrorHandler(rm_error_handler);
    SetWarningHandler(rm_warning_handler);

}




/**
 * Ensure the version of ImageMagick we're running with matches the version we
 * were compiled with.
 *
 * No Ruby usage (internal function)
 *
 * Notes:
 *   - Bypass the test by defining the constant RMAGICK_BYPASS_VERSION_TEST to
 *     'true' at the top level, before requiring 'RMagick'
 */
static void
test_Magick_version(void)
{
    unsigned long version_number;
    const char *version_str;
    int x, n;
    ID bypass = rb_intern("RMAGICK_BYPASS_VERSION_TEST");

    if (RTEST(rb_const_defined(rb_cObject, bypass)) && RTEST(rb_const_get(rb_cObject, bypass)))
    {
        return;
    }

    version_str = GetMagickVersion(&version_number);
    if (version_number != MagickLibVersion)
    {
        // Extract the string "ImageMagick X.Y.Z"
        n = 0;
        for (x = 0; version_str[x] != '\0'; x++)
        {
            if (version_str[x] == ' ' && ++n == 2)
            {
                break;
            }
        }

        rb_raise(rb_eRuntimeError,
                 "This installation of RMagick was configured with %s %s but %.*s is in use.\n" ,
                 MagickPackageName, MagickLibVersionText, x, version_str);
    }

}





/**
 * Create Version, Magick_version, and Version_long constants.
 *
 * No Ruby usage (internal function)
 */
static void
version_constants(void)
{
    const char *mgk_version;
    volatile VALUE str;
    char long_version[1000];

    mgk_version = GetMagickVersion(NULL);

    str = rb_str_new2(mgk_version);
    rb_obj_freeze(str);
    rb_define_const(Module_Magick, "Magick_version", str);

    str = rb_str_new2(Q(RMAGICK_VERSION_STRING));
    rb_obj_freeze(str);
    rb_define_const(Module_Magick, "Version", str);

    sprintf(long_version,
            "This is %s ($Date: 2009/12/20 02:33:33 $) Copyright (C) 2009 by Timothy P. Hunter\n"
            "Built with %s\n"
            "Built for %s\n"
            "Web page: http://rmagick.rubyforge.org\n"
            "Email: rmagick@rubyforge.org\n",
            Q(RMAGICK_VERSION_STRING), mgk_version, Q(RUBY_VERSION_STRING));

    str = rb_str_new2(long_version);
    rb_obj_freeze(str);
    rb_define_const(Module_Magick, "Long_version", str);

}


/**
 * Create Features constant.
 *
 * No Ruby usage (internal function)
 */
static void
features_constant(void)
{
    volatile VALUE features;

#if defined(HAVE_GETMAGICKFEATURES)
    features = rb_str_new2(GetMagickFeatures());
#else
    features = rb_str_new2(MagickSupport);
#endif

    rb_obj_freeze(features);
    rb_define_const(Module_Magick, "Magick_features", features);
}
