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Can you really do what this tutorial states?

Oct 20, 2012, 16:53
Post: #1
Can you really do what this tutorial states?
I was specifically looking for some relatively efficient means of producing text with some form of colored striping (not specifically for Christmas candy), when I happened on this tutorial:

http://www.gimpusers.com/tutorials/creat...dy-letters

Step 19 was particularly of interest for the idea that a colored, and visual pattern may be superimposed onto a text layer (or any layer). Although I followed the instructions to the letter, I got no such results. The most that I could succeed at doing is exactly what the official GIMP user manual said would happen with the Filters->Map->Warp function - my grey text was not replaced with other colors, but it was actually "warped" per the variance of contrast in my colored stipe pattern, irregardless of the colors chosen.

Interestingly, the official (this site) manual doesn't imply any purpose for the Warp function similar to what was suggested in the tutorial. I saw no implication that colors can be transferred to another layer using this function, nor that it can replace, as opposed to displace it's pixels. Not unless I missed something, that is (what I know is self-taught, and a little haphazard).

I have already spent enough hours to take up an entire day analyzing and trying to reconcile this, and I am getting quite frustrated! So I'm asking, is Step 19 of this tutorial correct if I proceed differently with the Warp function, or is it utter nonsense? Is there a more sensible way to achieve what is purported with this Step?
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Oct 22, 2012, 16:34
Post: #2
RE: Can you really do what this tutorial states?
Well, maybe you could tell me what really makes the difference between making the Warp function apply pixel-replacing colors, and the the always-grey-scaled pixel shifting which I consistently get with that function. Is there a specific mode somewhere, which is not set by default, of which the user knowledge was presumed?

From the start, this tutorial is not particularly concise. For example, I had to guess my way around which text layer (the original or the duplicate) should be blurred and colorized to grey (or should the new layer be blurred with only the original greyed?). The illustration showed an un-blurred grey layer, which did not enable an easy raised effect when bump-mapping was applied to that in tandem with a blurred, and black layer on a white background. Also, the illustration for the inititial blurring results were not consistent at all with my (extreme) results after applying Guassian 30 to the new layer, after I removed the alpha layer. Eventually I stumbled on the right combination for producing the raised text effect (which I am happy to have learned, although it isn't what I set out to achieve)

Focusing on the warp function and and pattern transfer: do you think it matters whether the text layer which you would add stripes to is raised, black, grey, any color, or against any background (the text on white layer)? What specifically makes the difference between the promised results of a pattern overlay (stripes) and my results (as expected after reading the official user manual) which is the shifting and spinning of whatever it touches according to the applied layer's shift in contrast?

On the warp function and color transfer: Why did you use black? I would guess that it was quicker to produce for your test, but are there limits to transferability of color? Did you use the "four bars" Radial tool per the instructions ? I found this to be less than Ideal for producing consistent stripes of only two colors or shades. Colorize and Curves was applied, but several back-and-forth iterations are required before deep colors on white are almost consistent (never perfect, although it's much easier with very light colors on white).

I'm taking seriously your comment that Step 21 is important, although I stopped at Step 19 because I wasn't getting the steps which were implied by the accompanying illustration. Did you have to continue to Step 21 before the Warp function shifted from it's normal displacement actions to what we are told it should do in this case?


quote='ofnuts' pid='14015' dateline='1350774180']
(Oct 20, 2012 16:53)Name - what f***'n name? Wrote:  I was specifically looking for some relatively efficient means of producing text with some form of colored striping (not specifically for Christmas candy), when I happened on this tutorial:

http://www.gimpusers.com/tutorials/creat...dy-letters

Step 19 was particularly of interest for the idea that a colored, and visual pattern may be superimposed onto a text layer (or any layer). Although I followed the instructions to the letter, I got no such results. The most that I could succeed at doing is exactly what the official GIMP user manual said would happen with the Filters->Map->Warp function - my grey text was not replaced with other colors, but it was actually "warped" per the variance of contrast in my colored stipe pattern, irregardless of the colors chosen.

Interestingly, the official (this site) manual doesn't imply any purpose for the Warp function similar to what was suggested in the tutorial. I saw no implication that colors can be transferred to another layer using this function, nor that it can replace, as opposed to displace it's pixels. Not unless I missed something, that is (what I know is self-taught, and a little haphazard).

I have already spent enough hours to take up an entire day analyzing and trying to reconcile this, and I am getting quite frustrated! So I'm asking, is Step 19 of this tutorial correct if I proceed differently with the Warp function, or is it utter nonsense? Is there a more sensible way to achieve what is purported with this Step?
Works for me:
- downloaded the sample file
- made stripes layer invisible
- added transparent layer
- filled with B&W stripes
- warped using the "Textlayer copy" layer (the one at the top with the blurred text on white BG)
- applied the "grain merge" at step 21 (important!)



So you may have overlooked something but that will be hard to guess (if you overlooked it, you are not going to tell us Smile ). If you attach your XCF I can have a look.
[/quote]
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Oct 23, 2012, 02:15 (This post was last modified: Oct 23, 2012 02:16 by Name - what f***'n name?.)
Post: #3
RE: Can you really do what this tutorial states?
Ok, now I have the stripes on text - yay!

The problem which remains is what this tut did not address, and apparently your work isn't distorted by it either. This is the distortion of my blurred text when my striped layer was warped on my text. I followed the steps up through 22 (I'm not interested in the reflective layers until I get this part right), merging down from the remainder of my striped layer until I reached my image background. This did not reverse the distortion which was caused by warping on the stripes according to the directions in Step 19. So, what do you do to avoid this problem? I suppose you can just warp to a lesser degree than the directions specify, but how do you warp without distorting your text at all? If it matters, I did not actually work with the same font, because it isn't in GIMP by default, and I'm not familiar with Inkscape.
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Oct 30, 2012, 14:06
Post: #4
RE: Can you really do what this tutorial states?
Thank you, you've been very helpful, and I'm so sorry I haven't responded sooner! No excuses which most people would understand, just the usual problem of taking on more than I can handle, because I'd starve doing what I can handle. I do appreciate your patience.

(Oct 23, 2012 07:24)ofnuts Wrote:  To set your expectations too high... In Gimp you don't try to do an exact 3D rendering (better use 3D software for that) but something that just "looks like".

If you want some part to not be warped, then find some way to set that area to a 50% gray on the warp map (border selection or else).
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