Handle<Value> MerlinImage::NegateImage(const Arguments& args) {
HandleScope scope;
MagickWand* wand = MerlinImage::ReadImage( ObjectWrap::Unwrap<MerlinImage>(args.This()) );
MagickNegateImage(wand, MagickFalse);
return scope.Close(MerlinImage::WriteImage(wand));
}
apr_status_t
dims_invert_operation (dims_request_rec *d, char *args, char **err) {
if(args != NULL) {
if(strcmp(args, "true") == 0) {
MAGICK_CHECK(MagickNegateImage(d->wand, MagickFalse), d);
}
}
return DIMS_SUCCESS;
}
MagickBooleanType MagickNegateImageChannel(MagickWand *wand,const ChannelType channel,const MagickBooleanType gray) {
MagickBooleanType status;
ChannelType previous_channel_mask;
if (channel != UndefinedChannel) {
previous_channel_mask = MagickSetImageChannelMask(wand, channel);
}
status = MagickNegateImage(wand, gray);
if (channel != UndefinedChannel) {
(void) MagickSetImageChannelMask(wand, previous_channel_mask);
}
return status;
}
