USAGE: bevel [-w width] [-a azimuth] [-e elevation] [-d depth] [-f form] [-i innermode] [-o outermode] [-s soften] [-t taper] [-b bcolor] [-c colormode] infile outfile
USAGE: bevel [-h or -help]

-w .... width ........... width of border in pixels; same in both dimensions;
......................... integer>0; default=5
-a .... azimuth ......... azimuth angle for light source; 0<=integer<=360;
......................... counterclockwise from positive x axis (East);
......................... default=135 (NorthWest)
-e .... elevation ....... elevation angle for light source; 0<=integer<=90;
......................... upwards from x-y plane; default=30
-d .... depth ........... depth of effect; integer>=0; default=100
-f .... form ............ form of effect; choices are: inner, outer or emboss;
......................... default=inner
-i .... innermode ....... mode for form=inner or emboss; choices are:
......................... hard or smooth; default=hard
-o .... outermode ....... mode for form=outer or emboss; choices are:
......................... raised or lowered; default=raised
-s .... soften .......... softening or smoothing effect; integer>=0; default=0
-t .... taper ........... taper amount for form=outer or emboss; integer>=0;
......................... nominally 0 to 3; default=2 for mode=raised;
......................... default=0 for mode=lowered
-b .... bcolor .......... color for outer bevel or outer bevel part of emboss;
......................... Any valid opaque IM color is allowed; default=gray
......................... color
-c .... colormode ....... colorization mode when bcolor is assigned; choices
......................... are: dark or light; default=dark

PURPOSE: To apply an inner bevel or outer bevel or emboss effect to an image.

DESCRIPTION: BEVEL applies an inner bevel or outer bevel or emboss effect to an image, especially one that has an alpha channel.

ARGUMENTS:

-w width ... WIDTH is the dimensions of bevel/emboss effect. The same value is used in both dimensions. Values are integers greater than 0. The default=5.

-a azimuth ... AZIMUTH is the angle in degrees in the x-y plane measured counterclockwise from EAST to the light source. Values are integers in the range 0<=azimuth<=360. The default=135 (NorthWest).

-e elevation ... ELEVATION is the angle in degrees upwards from the x-y plane to the light source. Values are integers in the range 0<=elevation<=90. The default=30.

-d depth ... DEPTH controls the depth effect. It basically adjust the contrast of the shading in the effect. Values are integers>=0. Larger values increase the depth/contrast and smaller values decrease the depth/contrast. The default=100.

-f form ... FORM of the effect. The choices are: inner, outer or emboss. The default=inner.

-i innermode ... INNERMODE is the mode for form=inner or emboss. The choices are: hard or smooth. The default=hard.

-o outermode ... OUTERMODE is the mode for form=outer or emboss. The choices are: raised or lowered. The default=raised.

-s soften ... SOFTEN is the amount of softening or smoothing in the effect. Values are integer>=0. Nominal values are 0 to about 10. The default=0 (no softening).

-t taper ... TAPER is the rate of tapering for form=outer or emboss. Values are integesr>=0. Nominally, taper is about 0 to 3. Smaller taper means the effect rolls off or tapers faster and is more downward curved. Larger values means the taper rolls off more slowly and flatly. The default=2 for mode=raised and the default=0 for mode=lowered.

-b bcolor ... BCOLOR is the color to apply to the outer bevel or outer bevel part of emboss. Any valid opaque IM color is allowed. The default=gray

-c colormode ... COLORMODE is the colorization mode to use when bcolor is assigned. The choices are: dark or light. The default=dark.

NOTE: When the image has no alpha channel or a fully opaque alpha channel, then it is recommended that one use my bevelborder script, as it is much faster.

CAVEAT: No guarantee that this script will work on all platforms, nor that trapping of inconsistent parameters is complete and foolproof. Use At Your Own Risk.