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Need more detail on how to Warp patterns over text

Mar 17, 2014, 05:04
Post: #1
Need more detail on how to Warp patterns over text
In following the Sweet Candy tutorial http://www.gimpusers.com/tutorials/creat...y-letters, I am getting frustrated and stuck at Step 19 because I need more details on how to use the Warp filter to warp any pattern over text. On this site, I studied http://docs.gimp.org/en/plug-in-warp.html until my eyes were burning - while it does provide a nice explanation of how a displacement map works, it explains nothing of the options in the Warp window.

What I need clarified:
1. Underneath the relection layers, I still have the the blurred layer, and the text which it it has given a 3-D appearance to just below it. Should the new layer (e.g., a layer of stripes) go just above the text layer, or over the blurred layer?

2. To make the pattern really follow my bump-mapped text, should I do the warp while in the text layer, the blurred layer, or the pattern layer?

3. In the Warp window, what about all the names for these options? The direction in this tutorial are framed as if my options (particularly for the displacement map) should be one the layers which are on my screen, but the names of those available options are not names of any names in my layers box, and they aren't any names assigned by me. As it happened (and according to this Sweet Candy tutorial) my blurred layer is also grey, which renders it invisible at icon size against the grey checkerboard, therefore I am unable to guess this. I've been tinkering with this for much too long, and it's really unhealthy. Can somebody explain why the options in the Warp window lists are named as they are, and how I can make sense of it all?\

Thanks.
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Mar 17, 2014, 11:13
Post: #2
RE: Need more detail on how to Warp patterns over text
Quote:What I need clarified:
1. Underneath the relection layers, I still have the the blurred layer, and the text which it it has given a 3-D appearance to just below it.
The blurred layer is the bump map, It is used once for the text, and again for the Warp displacement map. Visibility of these is usually disabled, it does not matter where it goes. Often remains visible but moved under the bottom layer and not seen.

Quote:Should the new layer (e.g., a layer of stripes) go just above the text layer, or over the blurred layer?
It should go just above the bumpmapped (rounded) text. The layer is in grain-merge mode and inter-acts with the grey of the layer underneath.

Quote:2. To make the pattern really follow my bump-mapped text, should I do the warp while in the text layer, the blurred layer, or the pattern layer?
Warp the pattern layer

Quote:3. In the Warp window, what about all the names for these options? The direction in this tutorial are framed as if my options (particularly for the displacement map) should be one the layers which are on my screen, but the names of those available options are not names of any names in my layers box, and they aren't any names assigned by me. As it happened (and according to this Sweet Candy tutorial) my blurred layer is also grey, which renders it invisible at icon size against the grey checkerboard, therefore I am unable to guess this. I've been tinkering with this for much too long, and it's really unhealthy. Can somebody explain why the options in the Warp window lists are named as they are, and how I can make sense of it all?

I also found that the warp dialogue does not always pick up the bumpmap layer. Seems to depend on how the layer to be warped is made, but not a plugin I use, so keep on trying. Give your layers meaningful names.

As Ofnuts often points out these tutorials do not teach you all that much except how to follow a recipe. Throw in some typos, layers that do not exist and not surprising that you are confused.

Much better to look at the desired result and experiment how to achieve it.

I tacked a video (5 mins) of part of the process at the end of the following thread. Just the bump mapping stripy layer and warp part, no highlights.

http://gimpforums.com/thread-basic-concepts

have a look it might help.

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Mar 17, 2014, 15:41 (This post was last modified: Mar 17, 2014 15:51 by Channelslock.)
Post: #3
RE: Need more detail on how to Warp patterns over text
(Mar 17, 2014 07:37)ofnuts Wrote:  Refer to the Layers list in the screenshots of the tutorial. It shows the order of the layers and the active layer when the plugin is called. Typically you start thr plugin with the target layer (the stripes) active, and specify the "map" in the plugin (the blurred text, "Tex layer copy" according to the screenshot of Step #3.

Ok, so I activate my stripes layer, then I call up the warp dialog, and when that displays I see that by default my "displacement map" is the layer with an icon which is clearly my colored stripe pattern. Therefore, by default the displacement map is set for the target itself?

My displacement map is supposed to be the blurred layer, and I don't see that one on the available list (or I don't see one that has an appropriate icon just like the one in my project Layers dialog). This layer's icon should be easy to pick out, being black text against white, with the alpha layer removed. I know I should not be reduced to "reading the pictures", but none of the titles in these available layers make any sense. For example, the numbers on the ends may reflect text which i had typed (plus much other data which I know nothing of), but the numbers are broad ranges (e.g. 1-40), not quite reflecting the enumeration of my duplicated layers, and in fact I haven't so many layers in my project. I created duplicates of my text layer for the reflections to add to the confusion, all according to this tutorial which leaves you guessing on this part, plus the layers do not even reflect the order of those which would be available. For example, my project Layers dialog has the white background at the bottom of the list, but the Displacement Map list in the Warp dialog does not. Can you please give me a source where all this is explained?

Thanks.
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Mar 17, 2014, 16:45 (This post was last modified: Mar 17, 2014 16:52 by rich2005.)
Post: #4
RE: Need more detail on how to Warp patterns over text
OP could always have a look at the demo video I made.

http://www.youtube.com/watch?v=EdrjMNOKU4s&hd=1

As you say all it takes is a little naming of the layers.
[Image: xmeezYY.jpg]

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Mar 17, 2014, 18:03 (This post was last modified: Mar 17, 2014 19:11 by Channelslock.)
Post: #5
RE: Need more detail on how to Warp patterns over text
(Mar 17, 2014 16:38)ofnuts Wrote:  1)You can/should always give more meaningful names to the layers

2) quick experimentation demonstrates that the layers usable as a map are those that are exactly the same size as the target layer(*). So if you blurred text isn't there it means that these is a size mismatch, and you will have to figure out which and why.

3) Yes the default for the map is the target layer itself. Doesn't make much sense, but the alternative would be to pick a layer at random, which wouldn't make much sense either.

(*) See attachment. Notice that neither "Background" nor "MAP: Enlarged to canvas" are available in the selector.

<blockquote>
You can/should always give more meaningful names to the layers
</blockquote>

You apparently don't understand. Although I took your advice and gave my layers (in my Layers dialog) meaningful names, these names are NOT reflected in my choice of "Displacement Maps" in my Warp dialog. They are weird names, which make it very difficult for me to identify which layer I could actually choose as a displacement map. I am able to identify my colored striped pattern by the icon which is displayed there, but there is no icon resembling my blurred text layer (which in my Layers dialog is a white rectangle with text (apparently for the removed alpha channel), surrounded by solid black (not that this part of the layer was actually colored black). There really is some confusion here which needs clarifying - will you please address this?

Furthermore, GIMP is not only assigning it's own meaningless names to my layers in the Warp dialog, it's changing the rules too. Now when I go to that dialog with the stripe layer activated, it is no longer the default in the "Displacement Map" selector, as previously discussed. This all really should be explained in detail somewhere, and why isn't that done on this site?

At some point, and for no apparent reason which I could understand, I had success in warping those stripes onto my text layer, but it's not been consistently repeatable. I have NOT alterned either my blurred layer, nor my text layer since. What I am working with are layers in the following order (and the tutorial screenshot is NOT high enoough resolution to be clear on all of these):

BLURRED Layer
Text Reflection 1
Text Reflection 2
Text Reflection 3
Colored STRIPED Layer
SPECTRUM (my text)
Background (not displayed)

I have been successful thus far with bump-mapping a blurred duplicate layer of SPECTRUM onto my original text, and created satisfactory reflection layers for them, and now I want to warp those strips on over those nice curves. With the striped layer active, I go to the Warp dialog, and I find the following "Displacement Maps" are available:

3d Spectrum.Xcf-7 / Layer-141
3d Spectrum.X...ackground-32
Untitled-6 / Background-30

The above are my available choices, and none of them are labeled in any sensible way, far as I can see. Can you make sense of any of this? Please.
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Mar 17, 2014, 18:31
Post: #6
RE: Need more detail on how to Warp patterns over text
Definitely having problems, maybe time to move to some other graphics application.

Even with a complicated image most people can determine the layers. You could try this. I detached the layers dialog just to make it easier to see. Not usually necessary.

[Image: RmNYAOp.jpg]

1. Right click on a layer and select layer attributes.
2. In the layer attributes the layer number is shown. Again very small so get your magnifying glass out.
3. That layer number shows up plainly in the warp dialog.

Remember to move back to the stripy layer to apply the warp.

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Mar 17, 2014, 19:08
Post: #7
RE: Need more detail on how to Warp patterns over text
Hello, I just edited my post which you responded to, so that maybe somebody could make some sense out of the options which I was getting, and I'll repeat it here:

My Layers Panel:
BLURRED Layer
Text Reflection 1
Text Reflection 2
Text Reflection 3
Colored STRIPED Layer
SPECTRUM (my text)
Background (not displayed)

My choices under the Warp dialog selector for Displacement Maps:
3d Spectrum.Xcf-7 / Layer-141
3d Spectrum.X...ackground-32
Untitled-6 / Background-30

I know my displacement map should be the blurred layer. Do any of the above options under the Warp dialog seem a likely candidate? None of hem seem so to me, and since I created this blurred layer according to directions, successfully bump-mapped them to produce the expected curves, and haven't altered either that or my text layer since, I'm really wondering what the problem could be.


(Mar 17, 2014 18:31)rich2005 Wrote:  Definitely having problems, maybe time to move to some other graphics application.

Even with a complicated image most people can determine the layers. You could try this. I detached the layers dialog just to make it easier to see. Not usually necessary.

[Image: RmNYAOp.jpg]

1. Right click on a layer and select layer attributes.
2. In the layer attributes the layer number is shown. Again very small so get your magnifying glass out.
3. That layer number shows up plainly in the warp dialog.

Remember to move back to the stripy layer to apply the warp.
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