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cables is under heavy development.
There might be one or another bug, please let us know about it!
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

Image Compositions

In this example we compose a new image / texture out of one image and some 2d effects.

Basic Setup

  • Image compose creates a new texture, the children ops of Image Compose apply 2D effects onto the texture
  • DrawImage applies an image
  • This example does not change the image at all, it is just a basic setup

Apply An Effect

  • To blur the image we add Blur to the end of the image composition chain
  • The image is now blurred, you can change the Blur parameters, or animate them

Add an Alpha Mask

  • DrawImage has a a slot called imageAlpha
  • Create a new texture op and connect it to the imageAlpha port of the drawImage op.
  • Select it and now click file in the main panel. Browse through the library until you find an image like this.

  • Using the AlphaSrc setting in the drawImage op you can select what defines the alpha / opacity value, in this case it's luminance of our alpha image.
  • If nothing happens try changing the AlphaSrc setting to alpha channel.

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