USAGE: 3Dreflection [-r rotate] [-f fade] [-o opacity] [-e exaggerate] [-b bcolor] [-z zoom] [-s shadow] [-a altitude] [-u umbra] [-p penumbra] infile outfile
USAGE: 3Dreflection [-h or -help]

-r .... rotate .......... perseptive rotation about left edge of image;
......................... 0<=integer<=90 deg; default=20
-f .... fade ............ fade percent for mirror image; 0<=integer<=100;
......................... default=40
-o .... opacity ......... opacity percent applied to whole mirror image;
......................... 0<=integer<=100; default=100
-g .... gap ............. gap between image and mirror in pixels; integer>=0;
......................... default=0
-e .... exaggerate ...... perspective exaggeration factor; 0<float<3;
......................... value of 1 is normal perspective; value of 0.5
......................... is close to orthographic; default=1
-b .... bcolor .......... background color; any valid IM color
......................... specification; default=none for transparent
-z .... zoom ............ zoom factor for output image; float>0; default=1
-s .... shadow .......... enable shadow; on or off; default=off
-a .... altitude ........ lighting altitude angle; 0<integer<90; default=80
-u .... umbra ........... graylevel percent value for dark part of shadow;
......................... 0<=integer<=100; default=60
-p .... penumbra ........ extent in pixels of light outer part of shadow;
......................... integer>0; default=4

PURPOSE: To add a fading reflection below an image and view in perspective.

DESCRIPTION: 3DREFLECTION adds a fading reflection below an image and views it in perspective. An optional shadow may be added. Note that the optional shadow is not a formal perspective projection, but is simply an approximation. Therefore it may only look approximately correct and may get worse for larger rotations.

ARGUMENTS:

-r rotate ... ROTATE is the perspective rotation about the left edge of the image. Values are integers between 0 and 90 deg. The default=20

-f fade ... FADE is the percent fade to apply to the mirror image that is placed below the original image. Values are integers between 0 and 100. The default=40

-o opacity ... OPACITY is the base opacity percent for the mirror image as a whole before it is faded. Values are integers between 0 and 100. The default=100 (no extra transparency).

-g gap ... GAP is a gap in pixels between the image and mirrored version below it. Values are integers greater than or equal to zero. The default=0.

-e exaggerate ... EXAGGERATE is the perspective exaggeration factor. Values are floats larger than 0 and less than 3. A value of 1 is a nominal perspective view. A value of 0.5 is a near orthographic view. The default=1.

-b bcolor ... BCOLOR is the background color. Any valid IM color specification is allowed. The default=none is tranparent. See http://imagemagick.org/script/color.php

-z zoom ... ZOOM is the zoom factor for the output image. Values are floats greater than 0. Values larger than 1 will enlarge and values less than 1 will shrink the output. The default=1.

-s shadow ... SHADOW enables or disables the optional shadow. Values are: on or off. The default=off.

-a altitude ... ALTITUDE is the lighting altitude angle. Values are integers larger than 0 and less than 90 deg. The default=80.

-u umbra ... UMBRA is the graylevel percent of the dark innner main part of the shadow. Values are integers between 0 and 100. The default=60.

-p penumbra ... PENUMBRA is the extent in pixels of the lighter outer part of the shadow. Values are integers greater than or equal to 0. The default=4.

REQUIREMENTS: This script requires my 3Drotate script to function.

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.