Board Thread:Fun and Games/@comment-24145588-20141023210242/@comment-24577221-20141025003102

Evac156 wrote: 56 Pontiac wrote: If you could point me to one that would allow editing the color of just one part of the png (like your Tub 'o Blood) I would greatly appreciate it! (the editor I use now will change ALL colors on all parts of a png ... ) Don't know of a tutorial on that offhand. But I know two ways to do it. (a) Select the region you want (select tool), go into color tools, and use the HSV controls, or (b) Split up the image into separate parts, colorize the parts you want, and then paste the layers back together.

I've just been playing with that fountain image. I lean towards the first method: I selected the liquid areas in the tub using the "Fuzzy Select Tool" (i.e. the magic wand), selecting on the basis of Hue with a threshold value of 30. The exact value of threshold was something I arrived at by experimentation: too high and I didn't get all of the liquid, too low and I got bits of the tub as well.

Then I added the animation bits to the selection with the rectangle select tool. Those were easy, since they're quite separate from anything else in the .PNG image. Here's where the combination of keyboard keys and mouse actions helps: with the shift key held down, your new selection is added to the previous one; with the control key down, your new selection is subtracted from the old. These, combined with the different selection tools, make it relatively easy (if sometimes tedious) to limit your changes to exactly the parts of the image that you want.

Another feature of the colour tool that makes it possible to adjust only parts of an image is that you can select only one colour "part" of the image -- in this case, the cyan, since that's the colour of the water. Unfortunately, other parts of the image are also in the cyan range, so you'd get changes in the leafy bits around the tub.

What I haven't been able to work out is how to make the "waterfall" bits more opaque, the way blood really ought to be. :-)