Cochesaurus Playground

Dessins, peintures, infographies, animation et pensées

29 octobre 2008


Like I promised, let's create a Telecommunications Antenna using Inkscape, I'm using Inkscape 0.46

Let's begin. Pick the Bezier Path Tool and while pressing the CTRL key draw a line at 75 degrees. Notice that when you hold the CTRL key you can draw straight lines and also the angle of the line change at 15 degrees when you move the mouse. (FIGURE 1)


FIGURE 1  Drawing a straight line at 75 degress with the Bezier Path Tool.

Now select your just drawn line and go to the Fill and Stroke dialog and change the line's thickness to 6. (FIGURE 2)


FIGURE 2  Change the line's thickness to 6.

Let's duplicate the line many times and arrange the resulting lines. You can select each line with the Select Tool and if you click the line again, the rotation handles appear, so again while pressing the CTRL key rotate the lines until you get something similar to this: (FIGURE 3)


FIGURE 3  Arrange the duplicated lines to get the basic shape of the antenna.

Select the whole set of lines and go to Path > Stroke to Path, after that (keep selected the set) go to Path > Union. In this way we get a single shape. After this select the shape using the Edit Path Tool (F2) and delete some nodes so we could get a nicer shape. The nodes that we won't want are those from the left, right and a few ones from the top. (FIGURE 4)


FIGURE 4  Refine the shape deleting some nodes.

At this time we should have a nice shape, but we are not done yet, so select the shape and apply a stroke of 2px and a temporary white fill. Now draw a kind of zebra pattern using rectangles, choose the colors you like the most, white with another cool color could work. After you've drawn your pattern, group it (CTRL+G) and convert it to a pattern by going to Object > Pattern > Objects to Pattern. After this delete your zebra pattern and select your antenna, then go to the Fill and Stroke dialog and under the Fill tab select pattern and then your just created zebra pattern. (FIGURE 5)


FIGURE 5  Apply a custom pattern to our antenna (the zebra pattern is on the left).

Any nice antenna should emit signals or something, so let's add some signals. To do this create 2 perfect circles using the Circles Tool, one of the circles should be small and the other big, then remove the fill of both circles and just add a stroke (2px or 4px). Select both circles and apply Path > Stroke to Path. After this go to Effects > Generate from Path > Interpolate and select the values (Exponent 0; Interpolation steps 2; Interpolation method 1) shown in FIGURE 6.


FIGURE 6  Using interpolation to add the remaining signal's circles.

Let's apply a nice touch to the signal, so it gets faded in the outer "rings". Before applying the effect, remember to group together the signal's rings. Now the effect, draw a rectangle and apply to it a radial gradient from white to black, then if you want, extract a kind of pizza's slice from the rectangle using an auxiliary shape, then Difference or Intersection within the shapes would work (this pizza's slice step is optional).

Now select both your signal's rings and the rectangle (with or without pizza's slice eaten) and go to Object > Mask > Set. (FIGURE 7)


FIGURE 7  Applying a fade effect to the signal's rings.

Let me show you my final Antenna, I added some clouds, a field and a shadow (I've used a duplicate of my antenna with lowered opacity and black fill). (FIGURE 8)


FIGURE 8  My final antenna.

And that's it we are done.I hope you have enjoyed this tutorial and as always thanks for reading.

Salu! (now you know how to say good bye in Salvadorean spanish, jeje)

Posté par coche à 06:13 - Infographies - Commentaires [0] - Permalien [#]


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