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cables Documentation      How To Use            Working with files            Keyboard Shortcuts            User Interface Walkthrough      Beginner Tutorial            Beginner 1: Drawing A Circle            Beginner 2: Transformations            Beginner 3: Color            More Transformations      intermediate            Image Compositions            Post-Processing 3D Scenes      communication            cables API            Communication with an Arduino via Serial            Communicating with Arduino over MQTT      Exporting And Embedding            How to serve files externally and fix CORS headers            Embedding Patches            External triggers / functions            Embedding Patches            Previewing / uploading exported cables patches      coding ops            Creating Attachments            General op/Port Callbacks            Ports                  Dynamic Ports                  Array Ports                  Boolean ports                  Integer Number Ports                  Object Ports                  String ports                  Trigger Ports                  Floating Point Number Ports            GUI/UI attributes            Hello Op - Part 1            Libraries            Developing Ops            Guidelines            Object Ports            Writing Shaders            Web Audio Op Development      HTML and CSS in cables      Lighting            Lights            Shadows      FAQ            Embedding                  How to remove grey rectangles on touch (mobile)?                  Why doesn't the DownloadTexture op work on iOS?                  How to disable page scrolling on mobile?                  Transparent Canvas            Features and Support                  Will there be support for (animated) GIFs?            General questions            Licences and payment                  What licence do i need to use cables?                  Will I have to pay for it in the future?                  How is my work licenced when using cables?            Does cables support midi and OSC?            Shadertoy            Technical questions            UI / Editor            WebGL1 and WebGL2

More Transformations

Back to part 3

To reuse the circle and draw multiple instances of them you can use the Ops.Trigger.Repeat

Add it like this:

Now you still see one circle, but the num-parameter of Repeat-op has a value 5. The 5 circles are currently drawn at the exact same position. To change this, we need to use the Transform-op again:

  • Connect the outgoing index-port of Repeat to the x-port of the 2nd transform object.
  • Now there will be 5 circles, this is because the Repeat object outputs a number for each instance. In this case 1 to 5. Feeding this into the Transform x port moves each circle as far as it's index number.
  • You may have to insert a new Transform-op before the Repeat-op and adjust the position of them to see them all (use x/y/z transforms to center them)

It should now look like this:

You can add another Repeat-op to make a 2D array of circles like this:

With some more practice and adjustments it is possible to create a 3D cube of cubes. This example uses only two new ops: matCapMaterial and cube:

That’s it. You have finished the beginner tutorial series. Now you should have a look at the existing examples and public projects to learn more…

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