Archived posting to the Leica Users Group, 2010/07/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Greetings Nathan, Thanks for looking! As for the clickable detail, the concept obviously works with any image and could scale to a gigantic size. The thangka images are sliced into 64x64 pixel squares. The shape and size were a somewhat experimentally derived choice. It's important to keep the slices relatively small so that cursor positioning is accurate. In the case of the thangkas, each is about 21,500 slices and one must be aware of file system limitations. The slices must be named methodically, something simple like image_0 to image_n is fine as long as one knows the image height and width in numbers of slices. The clickable image must be proportional to the image which was sliced up, ie. scaled down from. A javascript onClick calls a routine to compute the x and y coordinates of the cursor image offsets and the file names of the slices in the displayed slice array. The size and shape of the displayed array is arbitrary. The appropriate slices are then loaded into an array in the pop-up initialized with a single repeating white slice. Improvements could be made such as resizing and and panning within the pop-up, but at a certain point it would be too much a toy. Best, John Nathan Wajsman wrote: > Most impressive as always, John. I know you have explained it before, but > would you mind re-capping how you achieve the clickable detail? Does it > involve a lot of hand work or is it just computing power? > > Cheers, > Nathan > > Nathan Wajsman > Alicante, Spain > http://www.frozenlight.eu > http://www.greatpix.eu > http://www.nathanfoto.com > PICTURE OF THE WEEK: http://www.fotocycle.dk/paws > Blog: http://www.fotocycle.dk/blog > > YNWA > > > > > > On Jul 7, 2010, at 4:22 AM, John Nebel wrote: > >> http://thangkas.csd.net/ajita.html >> >> The image is clickable to show detail. >> >> John >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information >> > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information