# 定義済み定数

以下の定数が定義されています。 この関数の拡張モジュールが PHP 組み込みでコンパイルされているか、 実行時に動的にロードされている場合のみ使用可能です。

Colortype constants
`Gmagick::COLOR_BLACK` (integer)
  Black
`Gmagick::COLOR_BLUE` (integer)
  Blue
`Gmagick::COLOR_CYAN` (integer)
  Cyan
`Gmagick::COLOR_GREEN` (integer)
  Green
`Gmagick::COLOR_RED` (integer)
  Red
`Gmagick::COLOR_YELLOW` (integer)
  Yellow
`Gmagick::COLOR_MAGENTA` (integer)
  Magenta
`Gmagick::COLOR_OPACITY` (integer)
  Opacity
`Gmagick::COLOR_ALPHA` (integer)
  Alpha
`Gmagick::COLOR_FUZZ` (integer)
  Fuzz

Composite Operator Constants
`Gmagick::COMPOSITE_DEFAULT` (integer)
  The default composite operator
`Gmagick::COMPOSITE_UNDEFINED` (integer)
  Undefined composite operator
`Gmagick::COMPOSITE_NO` (integer)
  No composite operator defined
`Gmagick::COMPOSITE_ADD` (integer)
  The result of image + image
`Gmagick::COMPOSITE_ATOP` (integer)
  The result is the same shape as image, with composite image obscuring image where the image shapes overlap
`Gmagick::COMPOSITE_BLEND` (integer)
  Blends the image
`Gmagick::COMPOSITE_BUMPMAP` (integer)
  The same as COMPOSITE_MULTIPLY, except the source is converted to grayscale first.
`Gmagick::COMPOSITE_CLEAR` (integer)
  Makes the target image transparent
`Gmagick::COMPOSITE_COLORBURN` (integer)
  Darkens the destination image to reflect the source image
`Gmagick::COMPOSITE_COLORDODGE` (integer)
  Brightens the destination image to reflect the source image
`Gmagick::COMPOSITE_COLORIZE` (integer)
  Colorizes the target image using the composite image
`Gmagick::COMPOSITE_COPYBLACK` (integer)
  Copies black from the source to target
`Gmagick::COMPOSITE_COPYBLUE` (integer)
  Copies blue from the source to target
`Gmagick::COMPOSITE_COPY` (integer)
  Copies the source image on the target image
`Gmagick::COMPOSITE_COPYCYAN` (integer)
  Copies cyan from the source to target
`Gmagick::COMPOSITE_COPYGREEN` (integer)
  Copies green from the source to target
`Gmagick::COMPOSITE_COPYMAGENTA` (integer)
  Copies magenta from the source to target
`Gmagick::COMPOSITE_COPYOPACITY` (integer)
  Copies opacity from the source to target
`Gmagick::COMPOSITE_COPYRED` (integer)
  Copies red from the source to target
`Gmagick::COMPOSITE_COPYYELLOW` (integer)
  Copies yellow from the source to target
`Gmagick::COMPOSITE_DARKEN` (integer)
  Darkens the target image
`Gmagick::COMPOSITE_DSTATOP` (integer)
  The part of the destination lying inside of the source is composited over the source and replaces the destination
`Gmagick::COMPOSITE_DST` (integer)
  The target is left untouched
`Gmagick::COMPOSITE_DSTIN` (integer)
  The parts inside the source replace the target
`Gmagick::COMPOSITE_DSTOUT` (integer)
  The parts outside the source replace the target
`Gmagick::COMPOSITE_DSTOVER` (integer)
  Target replaces the source
`Gmagick::COMPOSITE_DIFFERENCE` (integer)
  Subtracts the darker of the two constituent colors from the lighter
`Gmagick::COMPOSITE_DISPLACE` (integer)
  Shifts target image pixels as defined by the source
`Gmagick::COMPOSITE_DISSOLVE` (integer)
  Dissolves the source in to the target
`Gmagick::COMPOSITE_EXCLUSION` (integer)
  Produces an effect similar to that of Gmagick::COMPOSITE_DIFFERENCE, but appears as lower contrast
`Gmagick::COMPOSITE_HARDLIGHT` (integer)
  Multiplies or screens the colors, dependent on the source color value
`Gmagick::COMPOSITE_HUE` (integer)
  Modifies the hue of the target as defined by source
`Gmagick::COMPOSITE_IN` (integer)
  Composites source into the target
`Gmagick::COMPOSITE_LIGHTEN` (integer)
  Lightens the target as defined by source
`Gmagick::COMPOSITE_LUMINIZE` (integer)
  Luminizes the target as defined by source
`Gmagick::COMPOSITE_MINUS` (integer)
  Subtracts the source from the target
`Gmagick::COMPOSITE_MODULATE` (integer)
  Modulates the target brightness, saturation and hue as defined by source
`Gmagick::COMPOSITE_MULTIPLY` (integer)
  Multiplies the target to the source
`Gmagick::COMPOSITE_OUT` (integer)
  Composites outer parts of the source on the target
`Gmagick::COMPOSITE_OVER` (integer)
  Composites source over the target
`Gmagick::COMPOSITE_OVERLAY` (integer)
  Overlays the source on the target
`Gmagick::COMPOSITE_PLUS` (integer)
  Adds the source to the target
`Gmagick::COMPOSITE_REPLACE` (integer)
  Replaces the target with the source
`Gmagick::COMPOSITE_SATURATE` (integer)
  Saturates the target as defined by the source
`Gmagick::COMPOSITE_SCREEN` (integer)
  The source and destination are complemented and then multiplied and then replace the destination
`Gmagick::COMPOSITE_SOFTLIGHT` (integer)
  Darkens or lightens the colors, dependent on the source
`Gmagick::COMPOSITE_SRCATOP` (integer)
  The part of the source lying inside of the destination is composited onto the destination
`Gmagick::COMPOSITE_SRC` (integer)
  The source is copied to the destination
`Gmagick::COMPOSITE_SRCIN` (integer)
  The part of the source lying inside of the destination replaces the destination
`Gmagick::COMPOSITE_SRCOUT` (integer)
  The part of the source lying outside of the destination replaces the destination
`Gmagick::COMPOSITE_SRCOVER` (integer)
  The source replaces the destination
`Gmagick::COMPOSITE_SUBTRACT` (integer)
  Subtract the colors in the source image from the destination image
`Gmagick::COMPOSITE_THRESHOLD` (integer)
  The source is composited on the target as defined by source threshold
`Gmagick::COMPOSITE_XOR` (integer)
  The part of the source that lies outside of the destination is combined with the part of the destination that lies outside of the source

Montage Mode constants
`Gmagick::MONTAGEMODE_FRAME` (integer)
`Gmagick::MONTAGEMODE_UNFRAME` (integer)
`Gmagick::MONTAGEMODE_CONCATENATE` (integer)

Style constants
`Gmagick::STYLE_NORMAL` (integer)
`Gmagick::STYLE_ITALIC` (integer)
`Gmagick::STYLE_OBLIQUE` (integer)
`Gmagick::STYLE_ANY` (integer)

Filter constants
`Gmagick::FILTER_UNDEFINED` (integer)
`Gmagick::FILTER_POINT` (integer)
`Gmagick::FILTER_BOX` (integer)
`Gmagick::FILTER_TRIANGLE` (integer)
`Gmagick::FILTER_HERMITE` (integer)
`Gmagick::FILTER_HANNING` (integer)
`Gmagick::FILTER_HAMMING` (integer)
`Gmagick::FILTER_BLACKMAN` (integer)
`Gmagick::FILTER_GAUSSIAN` (integer)
`Gmagick::FILTER_QUADRATIC` (integer)
`Gmagick::FILTER_CUBIC` (integer)
`Gmagick::FILTER_CATROM` (integer)
`Gmagick::FILTER_MITCHELL` (integer)
`Gmagick::FILTER_LANCZOS` (integer)
`Gmagick::FILTER_BESSEL` (integer)
`Gmagick::FILTER_SINC` (integer)

Image type constants
`Gmagick::IMGTYPE_UNDEFINED` (integer)
`Gmagick::IMGTYPE_BILEVEL` (integer)
`Gmagick::IMGTYPE_GRAYSCALE` (integer)
`Gmagick::IMGTYPE_GRAYSCALEMATTE` (integer)
`Gmagick::IMGTYPE_PALETTE` (integer)
`Gmagick::IMGTYPE_PALETTEMATTE` (integer)
`Gmagick::IMGTYPE_TRUECOLOR` (integer)
`Gmagick::IMGTYPE_TRUECOLORMATTE` (integer)
`Gmagick::IMGTYPE_COLORSEPARATION` (integer)
`Gmagick::IMGTYPE_COLORSEPARATIONMATTE` (integer)
`Gmagick::IMGTYPE_OPTIMIZE` (integer)

Resolution constants
`Gmagick::RESOLUTION_UNDEFINED` (integer)
`Gmagick::RESOLUTION_PIXELSPERINCH` (integer)
`Gmagick::RESOLUTION_PIXELSPERCENTIMETER` (integer)

Compression constants
`Gmagick::COMPRESSION_UNDEFINED` (integer)
`Gmagick::COMPRESSION_NO` (integer)
`Gmagick::COMPRESSION_BZIP` (integer)
`Gmagick::COMPRESSION_FAX` (integer)
`Gmagick::COMPRESSION_GROUP4` (integer)
`Gmagick::COMPRESSION_JPEG` (integer)
`Gmagick::COMPRESSION_JPEG2000` (integer)
`Gmagick::COMPRESSION_LOSSLESSJPEG` (integer)
`Gmagick::COMPRESSION_LZW` (integer)
`Gmagick::COMPRESSION_RLE` (integer)
`Gmagick::COMPRESSION_ZIP` (integer)

Paint constants
`Gmagick::PAINT_POINT` (integer)
`Gmagick::PAINT_REPLACE` (integer)
`Gmagick::PAINT_FLOODFILL` (integer)
`Gmagick::PAINT_FILLTOBORDER` (integer)
`Gmagick::PAINT_RESET` (integer)

Gravity constants
`Gmagick::GRAVITY_NORTHWEST` (integer)
`Gmagick::GRAVITY_NORTH` (integer)
`Gmagick::GRAVITY_NORTHEAST` (integer)
`Gmagick::GRAVITY_WEST` (integer)
`Gmagick::GRAVITY_CENTER` (integer)
`Gmagick::GRAVITY_EAST` (integer)
`Gmagick::GRAVITY_SOUTHWEST` (integer)
`Gmagick::GRAVITY_SOUTH` (integer)
`Gmagick::GRAVITY_SOUTHEAST` (integer)

Stretch constants
`Gmagick::STRETCH_NORMAL` (integer)
`Gmagick::STRETCH_ULTRACONDENSED` (integer)
`Gmagick::STRETCH_CONDENSED` (integer)
`Gmagick::STRETCH_SEMICONDENSED` (integer)
`Gmagick::STRETCH_SEMIEXPANDED` (integer)
`Gmagick::STRETCH_EXPANDED` (integer)
`Gmagick::STRETCH_EXTRAEXPANDED` (integer)
`Gmagick::STRETCH_ULTRAEXPANDED` (integer)
`Gmagick::STRETCH_ANY` (integer)

Align constants
`Gmagick::ALIGN_UNDEFINED` (integer)
`Gmagick::ALIGN_LEFT` (integer)
`Gmagick::ALIGN_CENTER` (integer)
`Gmagick::ALIGN_RIGHT` (integer)

Decoration constants
`Gmagick::DECORATION_NO` (integer)
`Gmagick::DECORATION_UNDERLINE` (integer)
`Gmagick::DECORATION_OVERLINE` (integer)
`Gmagick::DECORATION_LINETROUGH` (integer)

Noise constants
`Gmagick::NOISE_UNIFORM` (integer)
`Gmagick::NOISE_GAUSSIAN` (integer)
`Gmagick::NOISE_MULTIPLICATIVEGAUSSIAN` (integer)
`Gmagick::NOISE_IMPULSE` (integer)
`Gmagick::NOISE_LAPLACIAN` (integer)
`Gmagick::NOISE_POISSON` (integer)

Channel constants
`Gmagick::CHANNEL_UNDEFINED` (integer)
`Gmagick::CHANNEL_RED` (integer)
`Gmagick::CHANNEL_GRAY` (integer)
`Gmagick::CHANNEL_CYAN` (integer)
`Gmagick::CHANNEL_GREEN` (integer)
`Gmagick::CHANNEL_MAGENTA` (integer)
`Gmagick::CHANNEL_BLUE` (integer)
`Gmagick::CHANNEL_YELLOW` (integer)
`Gmagick::CHANNEL_ALPHA` (integer)
`Gmagick::CHANNEL_OPACITY` (integer)
`Gmagick::CHANNEL_MATTE` (integer)
`Gmagick::CHANNEL_BLACK` (integer)
`Gmagick::CHANNEL_INDEX` (integer)
`Gmagick::CHANNEL_ALL` (integer)

Metric constants
`Gmagick::METRIC_UNDEFINED` (integer)
`Gmagick::METRIC_MEANABSOLUTEERROR` (integer)
`Gmagick::METRIC_MEANSQUAREERROR` (integer)
`Gmagick::METRIC_PEAKABSOLUTEERROR` (integer)
`Gmagick::METRIC_PEAKSIGNALTONOISERATIO` (integer)
`Gmagick::METRIC_ROOTMEANSQUAREDERROR` (integer)

Pixel constants
`Gmagick::PIXEL_CHAR` (integer)
`Gmagick::PIXEL_DOUBLE` (integer)
`Gmagick::PIXEL_FLOAT` (integer)
`Gmagick::PIXEL_INTEGER` (integer)
`Gmagick::PIXEL_LONG` (integer)
`Gmagick::PIXEL_QUANTUM` (integer)
`Gmagick::PIXEL_SHORT` (integer)

Colorspace constants
`Gmagick::COLORSPACE_UNDEFINED` (integer)
`Gmagick::COLORSPACE_RGB` (integer)
`Gmagick::COLORSPACE_GRAY` (integer)
`Gmagick::COLORSPACE_TRANSPARENT` (integer)
`Gmagick::COLORSPACE_OHTA` (integer)
`Gmagick::COLORSPACE_LAB` (integer)
`Gmagick::COLORSPACE_XYZ` (integer)
`Gmagick::COLORSPACE_YCBCR` (integer)
`Gmagick::COLORSPACE_YCC` (integer)
`Gmagick::COLORSPACE_YIQ` (integer)
`Gmagick::COLORSPACE_YPBPR` (integer)
`Gmagick::COLORSPACE_YUV` (integer)
`Gmagick::COLORSPACE_CMYK` (integer)
`Gmagick::COLORSPACE_SRGB` (integer)
`Gmagick::COLORSPACE_HSB` (integer)
`Gmagick::COLORSPACE_HSL` (integer)
`Gmagick::COLORSPACE_HWB` (integer)
`Gmagick::COLORSPACE_REC601LUMA` (integer)
`Gmagick::COLORSPACE_REC709LUMA` (integer)
`Gmagick::COLORSPACE_LOG` (integer)

Virtual Pixel Method constants
`Gmagick::VIRTUALPIXELMETHOD_UNDEFINED` (integer)
`Gmagick::VIRTUALPIXELMETHOD_BACKGROUND` (integer)
`Gmagick::VIRTUALPIXELMETHOD_CONSTANT` (integer)
`Gmagick::VIRTUALPIXELMETHOD_EDGE` (integer)
`Gmagick::VIRTUALPIXELMETHOD_MIRROR` (integer)
`Gmagick::VIRTUALPIXELMETHOD_TILE` (integer)
`Gmagick::VIRTUALPIXELMETHOD_TRANSPARENT` (integer)

Preview constants
`Gmagick::PREVIEW_UNDEFINED` (integer)
`Gmagick::PREVIEW_ROTATE` (integer)
`Gmagick::PREVIEW_SHEAR` (integer)
`Gmagick::PREVIEW_ROLL` (integer)
`Gmagick::PREVIEW_HUE` (integer)
`Gmagick::PREVIEW_SATURATION` (integer)
`Gmagick::PREVIEW_BRIGHTNESS` (integer)
`Gmagick::PREVIEW_GAMMA` (integer)
`Gmagick::PREVIEW_SPIFF` (integer)
`Gmagick::PREVIEW_DULL` (integer)
`Gmagick::PREVIEW_GRAYSCALE` (integer)
`Gmagick::PREVIEW_QUANTIZE` (integer)
`Gmagick::PREVIEW_DESPECKLE` (integer)
`Gmagick::PREVIEW_REDUCENOISE` (integer)
`Gmagick::PREVIEW_ADDNOISE` (integer)
`Gmagick::PREVIEW_SHARPEN` (integer)
`Gmagick::PREVIEW_BLUR` (integer)
`Gmagick::PREVIEW_THRESHOLD` (integer)
`Gmagick::PREVIEW_EDGEDETECT` (integer)
`Gmagick::PREVIEW_SPREAD` (integer)
`Gmagick::PREVIEW_SOLARIZE` (integer)
`Gmagick::PREVIEW_SHADE` (integer)
`Gmagick::PREVIEW_RAISE` (integer)
`Gmagick::PREVIEW_SEGMENT` (integer)
`Gmagick::PREVIEW_SWIRL` (integer)
`Gmagick::PREVIEW_IMPLODE` (integer)
`Gmagick::PREVIEW_WAVE` (integer)
`Gmagick::PREVIEW_OILPAINT` (integer)
`Gmagick::PREVIEW_CHARCOALDRAWING` (integer)
`Gmagick::PREVIEW_JPEG` (integer)

Rendering Intent constants
`Gmagick::RENDERINGINTENT_UNDEFINED` (integer)
`Gmagick::RENDERINGINTENT_SATURATION` (integer)
`Gmagick::RENDERINGINTENT_PERCEPTUAL` (integer)
`Gmagick::RENDERINGINTENT_ABSOLUTE` (integer)
`Gmagick::RENDERINGINTENT_RELATIVE` (integer)

Fillrule constants
`Gmagick::FILLRULE_UNDEFINED` (integer)
`Gmagick::FILLRULE_EVENODD` (integer)
`Gmagick::FILLRULE_NONZERO` (integer)

Pathunit constants
`Gmagick::PATHUNITS_UNDEFINED` (integer)
`Gmagick::PATHUNITS_USERSPACE` (integer)
`Gmagick::PATHUNITS_USERSPACEONUSE` (integer)
`Gmagick::PATHUNITS_OBJECTBOUNDINGBOX` (integer)

Linecap constants
`Gmagick::LINECAP_UNDEFINED` (integer)
`Gmagick::LINECAP_BUTT` (integer)
`Gmagick::LINECAP_ROUND` (integer)
`Gmagick::LINECAP_SQUARE` (integer)

Line Join constants
`Gmagick::LINEJOIN_UNDEFINED` (integer)
`Gmagick::LINEJOIN_MITER` (integer)
`Gmagick::LINEJOIN_ROUND` (integer)
`Gmagick::LINEJOIN_BEVEL` (integer)

Resourcetype constants
`Gmagick::RESOURCETYPE_UNDEFINED` (integer)
`Gmagick::RESOURCETYPE_AREA` (integer)
`Gmagick::RESOURCETYPE_DISK` (integer)
`Gmagick::RESOURCETYPE_FILE` (integer)
`Gmagick::RESOURCETYPE_MAP` (integer)
`Gmagick::RESOURCETYPE_MEMORY` (integer)

Orientation constants
`Gmagick::ORIENTATION_UNDEFINED` (integer)
`Gmagick::ORIENTATION_TOPLEFT` (integer)
`Gmagick::ORIENTATION_TOPRIGHT` (integer)
`Gmagick::ORIENTATION_BOTTOMRIGHT` (integer)
`Gmagick::ORIENTATION_BOTTOMLEFT` (integer)
`Gmagick::ORIENTATION_LEFTTOP` (integer)
`Gmagick::ORIENTATION_RIGHTTOP` (integer)
`Gmagick::ORIENTATION_RIGHTBOTTOM` (integer)
`Gmagick::ORIENTATION_LEFTBOTTOM` (integer)