Elie Zedeck RANDRIAMIANDRIRAY on wrote... | Hi guys, | | I couldn't find in the Documentation any ways to use the | DissolveCompositeOp, as normally, it requires a parameter for the | dissolve factor. | | Anyone knows how to do this? | The parameters are passed as part of the geometry specification in the MagickCore library API.
It is generally not used directly like this but from API specific interfaces. In actual working it is equivelent to overlaying two images that have had their alpha channel multiplied by the appropriate dissove percentages. See http://www.imagemagick.org/Usage/compose/#dissolve The BlendCompositeOp is the same except instead of Over, Plus is used instead, to provide a Weighted Addition, or interpolation between the images. See http://www.imagemagick.org/Usage/compose/#blend However it is also designed to allow Extrapolation basied on the input percentages, whcih is not posible by simply pre-multiplying each images alpha channel values. The -unsharp operator for example is a Extrapolated Blend of the original image and a blurred copy of the original image. see http://www.imagemagick.org/Usage/#blend_use Anthony Thyssen ( System Programmer ) <[EMAIL PROTECTED]> ----------------------------------------------------------------------------- The Definition of an Upgrade: Take old bugs out, put new ones in. ----------------------------------------------------------------------------- Anthony's Home is his Castle http://www.cit.gu.edu.au/~anthony/ _______________________________________________ Magick-users mailing list [email protected] http://studio.imagemagick.org/mailman/listinfo/magick-users
