Chrominium Script.. how does it work?

mackenzieh · **Posted:** Sat Jan 17, 2015 4:04 pm **(#21)**

Issabella wrote:

Remove the one you have just in case and install this one in zip.

Thanks Issabella.

mackenzieh · **Posted:** Sat Jan 17, 2015 4:23 pm **(#22)**

Here's what I got when I just made an oval with the elipse tool and ran chrominium through it:

I would assume that's how it works.

Now the question becomes, how does it work on an image? That's the part I don't get.

Wallace · **Posted:** Sat Jan 17, 2015 5:37 pm **(#23)**

mackenzieh wrote:

Here's what I got when I just made an oval with the elipse tool and ran chrominium through it:

[ Image ]

I would assume that's how it works.

Now the question becomes, how does it work on an image? That's the part I don't get.

It works by making Alpha selections from the layer you run it on. If the image or shape is on a transparent layer, it will be selected as the object that the script will affect. If the layer's alpha channel is full, the script will select the entire layer. This is why you were getting squares from the script.

mackenzieh · **Posted:** Sat Jan 17, 2015 5:54 pm **(#24)**

Wallace wrote:

mackenzieh wrote:

Here's what I got when I just made an oval with the elipse tool and ran chrominium through it:

[ Image ]

I would assume that's how it works.

Now the question becomes, how does it work on an image? That's the part I don't get.

It works by making Alpha selections from the layer you run it on. If the image or shape is on a transparent layer, it will be selected as the object that the script will affect. If the layer's alpha channel is full, the script will select the entire layer. This is why you were getting squares from the script.

Oh, okay. I get it now. Thanks Wallace.

Oregonian · **Posted:** Sat Jan 17, 2015 6:13 pm **(#25)**

I've carried this script along for several years. GnuTux fixed it for Gimp v2.4 and it's still working for me. It was one of my favorite scripts for making gold text. I deleted all of the layers except for the top one, made a new layer at the top and filled it with yellow. Used layer modes for the gold ... choosing the one I liked best.

jontait2 · **Joined:** Dec 27, 2014 **Posts:** 508

@mackenzieh
The "textures" you were admiring are, I'm afraid, just an artefact .. a side-effect of the way the script produces the sparkles. If you create a blank transparent image (File>New plus Advanced option>Fill with transparency) and then run Filters>Alpha to logo>Chrominium on that null image you get something like this:

The alpha-to-logo simply has no contours to work upon, so no "chrome" effect is produced and all that is output is just the sparkles (generated by GIMP's sparkle plug-in). It is the interlacing and crossing of those sparkles which gives the appearance of a texture.

mackenzieh · **Posted:** Thu Jan 05, 2017 6:56 pm **(#27)**

This is what I get when I use the Chrominum script. Located here: Filters>Alpha to Logo

Unfortunately, The text itself doesn't have a chrome look to it. I am currently using the the most recent version of gimp.. 64 Bit Windows 7.

The first one is version 1
Here's the 2nd version:

With this version, I had to deleted the layer named Background #1. I shouldn't have to delete a layer. Is there a way around this?

dinasset · **Posted:** Fri Jan 06, 2017 3:15 am **(#28)**

With this input: (selected text on a transparent BG, default parameters)

Attachment:

Cattura1.PNG [ 113.25 KiB | Viewed 1471 times ]

I get this output

Attachment:

text-out1.png [ 300.92 KiB | Viewed 1471 times ]

no need to remove any layer

....

dinasset · **Posted:** Fri Jan 06, 2017 3:20 am **(#29)**

With this input: (selected text on a transparent BG, changed parameters)

Attachment:

Cattura2.PNG [ 110.19 KiB | Viewed 1471 times ]

I get this output

Attachment:

text-out2.png [ 333.64 KiB | Viewed 1471 times ]

still no need to remove any layer

Nidhogg · **Posted:** Fri Jan 06, 2017 7:12 am **(#30)**

Sure you need to remove or hide the background layer and also the mapper layer if you want transparent background to be shown automatically after the script is run.
Unless you´re not doing whole lot of them, like for .png export this should not matter. Otherwise the .scm needs to be modified.
The result with the logo version is exactly same.

dinasset · **Posted:** Fri Jan 06, 2017 8:42 am **(#31)**

I confirm what I said (and shown): no intervention on any layer, neither remove nor hide.
Why do not believe me? I'm not the author of that .scm, I have nothing to "defend".
I reported what I did.

Meemaw · **Joined:** Mar 15, 2016 **Posts:** 180 **Location:** USA

Is there a way to set the background color to transparent? Wouldn't that do it?

Mine turned out well, even with a background color.

mackenzieh · **Posted:** Fri Jan 06, 2017 3:10 pm **(#33)**

Nidhogg wrote:

Sure you need to remove or hide the background layer and also the mapper layer if you want transparent background to be shown automatically after the script is run.
Unless you´re not doing whole lot of them, like for .png export this should not matter. Otherwise the .scm needs to be modified.
The result with the logo version is exactly same.

I wasn't working on a transparent layer when I did both results. I was working on a black background layer. How ever, I do agree that the .scm file does need to be modified.

Konstantin · **Joined:** Sep 20, 2016 **Posts:** 293

Its just bumpmapping and a chrome curve on top. You dont need a script for something so simple.