Editing Constants - FilterMeisterWiki

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= Image constants =
These constants contain information about the image or preview being processed.

'''D''' - Maximum angle, always "1024". Datatype "int".
'''dmax''' - ''(deprecated)'' Identical to '''D'''. Maximum angle, always "1024". Datatype "int".
'''imageHRes''' - The horizontal DPI (Dots Per Inch) setting of the source image. Datatype "double".
'''imageVRes''' - The vertical DPI (Dots Per Inch) setting of the source image. Datatype "double".
'''imageWidth''' - Width of the original image in pixels, or width of the floating selection. Datatype "int".
'''imageHeight''' - Height of the original image in pixels, or width of the floating selection. Datatype "int".
'''pmax''' - ''(deprecated)'' Identical to '''Z'''. Number of available planes (channels) in the image.
'''wholeWidth''' - Width of the original image in pixels, regardless of floating selection. Datatype "int".
'''wholeHeight''' - Height of the original image in pixels, regardless of floating selection. Datatype "int".
'''X''' - Width of the ''currently processed'' image in pixels: on the run it's the (preview zoomratio dependent) PROXY IMAGE width but it's the original image width when effect is actually applied. Datatype "int".
'''xmax''' - ''(deprecated)'' Identical to '''X'''. Width of the currently processed image in pixels.
'''x_end''' - Last x pixel coordinate visible inside the preview window / of the currently processed image tile
'''x_start''' - First x pixel coordinate visible inside the preview window / of the currently processed image tile
'''Y''' - Height of the ''currently processed'' image in pixels: on the run it's the (preview zoomratio dependent) PROXY IMAGE height but it's the original image height when effect is actually applied. Datatype "int".
'''ymax''' - ''(deprecated)'' Identical to '''Y'''. Height of the currently processed image in pixels.
'''y_end''' - Last y pixel coordinate visible inside the preview window / of the currently processed image tile
'''y_start''' - First y pixel coordinate visible inside the preview window / of the currently processed image tile
'''Z''' - Number of available channels. Number of color channels + one option channel if image is not the background layer. Datatype "int".
'''zmax''' - ''(deprecated)'' Identical to '''Z'''. Number of available channels in the image.

= Processing constants =
These constants contain information about how the image is being processed and the platform it is being processed on.
((bgColor)) - The host application's current background color as an RGB triple stored in an integer
((DESIGNTIME)) - true if the filter is running in the FilterMeister development environment, false if a compiled filter plugin.
((doingProxy)) - true if the filter is running in a preview dialog window, and false if the filter is applying the effect to the image in the host program.
((doingScripting)) - true if the filter is running via a script / smart filter, false otherwise
((fgColor)) - The host application's current foreground color as an RGB triple stored in an integer
((filterCase)) - The type of data being filtered (eg Flat with no selection, Flat with a selection, etc)
((filterInstallDir)) - full directory path to where the plugin is installed
((filterUniqueID)) - a unique id / GUID for the plugin, for use by plugins that support scripting
((FMC_TARGET)) - set to 32 for 32-bit plugins, and 64 for 64-bit plugins. Only available from FM1.0 Beta9g MT4 onwards.
((haveMask)) - Boolean variable that is true when a non-rectangular area has been selected.
((hostSerialNumber)) - the serial number of the host application, if supported by the host program
((hostSig)) - a value that can sometimes be used to identify the host program the plugin is running in (eg particular Photoshop versions)
((imageMode)) - The mode of the image being filtered (eg Bitmap, Grayscale, RGB, CMYK etc)
((isFloating)) - Boolean variable that is true when the selection is floating.
((planes)) - the number of planes/channels in the image, including alpha & mask planes
((planesWithoutAlpha)) - the number of color planes/channels in an image (excludes alpha & mask planes)
((platformData)) - a value that can sometimes be used to identify a particular combination of host program & operating system
((samplingSupport)) - indicates whether the host supports non-1:1 sampling for the proxy preview
((scaleFactor)) - an integer representing the current zoom/scale of the preview proxy window  (eg 1 for 100%, 3 for 33%, 5 for 20%)
((zoomFactor)) - an integer between 1 and 16 to indicate the current zoom factor of the proxy preview window, or 0 if the proxy zoom factor has not yet been set. (In the current implementation, the zoomFactor variable is essentially the same as the built-in scaleFactor variable.)

[[Transclude Events]]

= Filtermeister Limits =
'''MAX_LABEL_SIZE'''       -max number of chars in a control label or dropdown list
'''MAX_TOOLTIP_SIZE'''     -max number of chars in a tooltip
'''MAX_SOURCE_CODE_SIZE''' -max number of chars allowed by the source editor
'''MAX_DLITS'''            -size of floating-point/string literal pool (in 8 byte units)
'''MAX_LOCALS'''           -max number of local variables in a handler or user-defined function
'''MAX_TEMPS'''            -max number of compiler-generated temporaries per handler or user-defined function
'''MAX_CASE_LABELS'''      -max number of case labels per switch statement
'''N_CELLS'''              -number of anonymous get/put cells
'''N_CTLS'''               -max number of controls (user-defined and system reserved)
'''CTL_LAST_USER'''        -index of last available user-defined control

= C Miscellaneous Constants =
These constants are specified in the C standard which FilterMeister aims to support; as such, they are available for developers.

'''_MAX_DIR''' - Maximum size in characters of a directory name (e.g., "adobe/photoshop/plug-ins").
'''_MAX_DRIVE''' - Maximum size in characters of a drive name (e.g., "C:").
'''_MAX_EXT''' - Maximum size in characters of a file extension (e.g., ".8bf").
'''_MAX_FNAME''' - Maximum size in characters of a file name (e.g., "myplugin").
'''_MAX_PATH''' - Maximum size in characters of a path name (e.g., "adobe/photoshop/plug-in/").
'''CLOCKS_PER_SEC'''
'''EDOM'''
'''ERANGE'''
'''EXIT_FAILURE'''
'''EXIT_SUCCESS'''
'''NULL''' - Constant for the integer value 0, representing a pointer to nothing.
'''RAND_MAX''' - Maximum value generated by the integer random number generator.

= C Mathematical Constants =
These constants are specified in the C standard which FilterMeister aims to support; especially in the library "math.h".

'''M_E''' - Same value as {{exp(1.0)}}
'''M_LOG2E''' - Same value as {{1.0/log(2.0)}}
'''M_LOG10E''' - Same value as {{1.0/log(10.0)}}
'''M_LN2''' - Same value as {{log(2.0)}}
'''M_LN10''' - Same value as {{log(10.0)}}
'''M_PI''' -  The numerical value of the ratio of the circumference of a circle to its diameter (approximately 3.14159). Usually represented by the Greek letter Pi.
'''M_PI_2''' - Same value as {{M_PI/2.0}}
'''M_PI_4''' - Same value as {{M_PI/4.0}}
'''M_1_PI''' - Same value as {{1.0/M_PI}}
'''M_2_PI''' - Same value as {{2.0/M_PI}}
'''M_2_SQRTPI''' - Same value as {{2.0/sqrt(M_PI)}}
'''M_SQRT2''' - Same value as {{sqrt(2.0)}}
'''M_SQRT1_2''' - Same value as {{1.0/sqrt(2.0)}}

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