Gimp - 2.4 Guía Del Usuario
GNU Image Manipulation Program
90 / 653
1. Creating images of dimension 1 (x): Open a new 30x30 pixels image, RGB with Transparent Fill Type. Using the
zoom draw a left hand with fingers upwards. Save it as handL0k.xcf (hand Left O Black).
Open the Layer Dialog. Double click on the layer to open the Layer Attributes Dialog and rename it to handL0k.
Duplicate the layer. Let visible only the duplicated layer, select it and apply a 90 rotation (Layer/Transform/ 90
rotation counter-clockwise). Rename it to handL-90k.
rotation counter-clockwise). Rename it to handL-90k.
Repeat the same operations to create handL180k and handL90k.
2. Creating images of dimension 2 (y): This dimension in our example has two ranks, one for left hand and the other for
right hand. The left hand rank exists yet. We shall build right hand images by flipping it horisontally.
Duplicate the handL0k layer. Let it visible only and select it. Rename it to handR0K. Apply Layer/Transform/Flip
Horizontally.
Horizontally.
Repeat the same operation on the other left hand layers to create their right hand equivalent.
Re-order layers to have a counter-clockwise rotation from top to bottom, alternating Left and Right: handL0k,
handR0k, handL-90k, handR-90k, ..., handR90k.
handR0k, handL-90k, handR-90k, ..., handR90k.
3. Creating images of dimension 3 (z): The third dimension has two ranks, one for black color and the other for blue
color. The first rank, black, exists yet. We well see that images of dimension 3 will be a copy, in blue, of the images
of dimension 2. So we will have our 16 images. But a row of 16 layers is not easy to manage: we will use layers with
two images.
of dimension 2. So we will have our 16 images. But a row of 16 layers is not easy to manage: we will use layers with
two images.
Select the handL0k layer and let it visible only. Using Image/Canvas Size change canvas size to 60x30 pixels.
Duplicate hand0k layer. On the copy, fill the hand with blue using Bucket Fill tool.
Now, select the Move tool. Double click on it to accede to its properties: check "Move the Current Layer" option.
Move the blue hand into the right part of the layer precisely with the help of Zoom.
Move the blue hand into the right part of the layer precisely with the help of Zoom.
Make sure only handL0k and its blue copy are visible. Right click on the Layer Dialog: Apply the "Merge Visible
Layers" command with the option "Expand as Necessary". You get a 60x30 pixels layer with the black hand on the
left and the blue hand on the right. Rename it to "handL0".
Layers" command with the option "Expand as Necessary". You get a 60x30 pixels layer with the black hand on the
left and the blue hand on the right. Rename it to "handL0".
Repeat the same operations on the other layers.
4. Set layers in order: Layers must be set in order so that GIMP can find the required image at some point of using the
brush. Our layers are yet in order but we must understand more generally how to have them in order.There are two
ways to imagine this setting in order. The first method is mathematical: GIMP divides the 16 layers first by 4; that
gives 4 groups of 4 layers for the first dimension. Each group represents a direction of the brush. Then, it divides
each group by 2; that gives 8 groups of 2 layers for the second dimension: each group represents a L/R alternation.
Then another division by 2 for the third dimension to represent a color at random between black and blue.
ways to imagine this setting in order. The first method is mathematical: GIMP divides the 16 layers first by 4; that
gives 4 groups of 4 layers for the first dimension. Each group represents a direction of the brush. Then, it divides
each group by 2; that gives 8 groups of 2 layers for the second dimension: each group represents a L/R alternation.
Then another division by 2 for the third dimension to represent a color at random between black and blue.
The other method is visual, by using the array representation. Correlation between two methods is represented in
next image:
next image:
How will GIMP read this array?
: GIMP starts with the first dimension which is programmed for ‘angular’, for
instance -90. In this -90 rank, in yellow, in the second dimension, it selects a L/R alternation, in an ‘incremental’
way. Then, in the third dimension, in a random way, it chooses a color. Finely, our layers must be in the following
order:
way. Then, in the third dimension, in a random way, it chooses a color. Finely, our layers must be in the following
order: