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Basic Animation

Let’s create a shape moire effect and automate it by using a first animation procedure.

Basic Animation

The idea is to make a text path, scale it on the vertical axis and copy it below each other.

Create a Textpath node.

  • Set Text to ABCD.
  • Select a bold font.
  • Set Size parameter to 120.00

Create a Transform node and connect textpath1 to it. Set Scale Y to 6.00 so you end up with an ugly stretched version of textpath1.

Create a Copy node. Connect transform1 to this node.

  • Set Copies to 10.
  • Set Translate Y to 12.00.

You should see this as a result:

Basic Animation Step1

Now we will create a pattern to use as a movable overlay over the above result.

Create a Rect node as a basic shape for the pattern.

  • Set Width to 400.00.
  • Set Height to 12.00 (which is the same amount as the value for translate Y parameter of copy1)

Create a Copy node and make 30 copies with a Translate Y parameter set to 13.00. Connect rect1 to this node.

In order to make it moveable create a Transform node and connect copy2 to it. We will change the value for Translate Y later.

Create a Merge node and connect copy1 to it. Do the same for transform2. Double click on merge1 to make it the rendered node.

Click once on transform2 and drag the Translate Y parameter. Cool..but can’t we automate it?

Animation asks for a few new things to be explained.

Parameters as we have seen before are editable by using their widgets. You can also make a dynamic variable by using expressions. One of the variables we can call for over an expression is FRAME (in capitals - system variables are all in CAPITALS), meaning it calls the number of the frame. Further is more information on expressions but let’s implement one now:

  • Click on the transform2 node and look at the parameter pane. On the right of each parameter is a small arrow that is in fact a button.
  • Click on it and select Toggle Expression. The look of the widget will change from the numberwidget to a textinput window.
  • Enter -FRAME en press the enter key. We call for the negative of the frame because i want the group of rectangles to go up.
  • On the lower left corner is the “Animation bar”. Click the Play button to see the animation.

You can save animation by going to the File tab » export Movie where you have a selection of possible formats. Enter a name for the animation and select the number of frames it has to export.

Try out:

  • Changing the order so the letters are printed upside down.
  • Change the letters in to an svg using an Import node. The Eifeltower for instance (from Wikipedia)
  • Change Text into an expression over Toggle Expression and enter int(FRAME/10.0) to see a counting procedure.

Basic Animation Eifel