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Introducing the GUI libraries

From: Interactive Data Visualization with Processing

Video: Introducing the GUI libraries

Before we leave this section, I wanted to introduce you to one other topic of things that you can use from your sketches to facilitate interaction between the user and the data. What there are are several contributed libraries that exist to provide a former graphical user interface to your sketches. And fortunately, these ones are all accessible through Processing's Add Library function. So what I'm going to do is, form a Processing sketch, it's just a blank one, I'm going to come over here to where it says Sketch and come down to Import Library. From there I go to Add Library at the top.

Introducing the GUI libraries

Before we leave this section, I wanted to introduce you to one other topic of things that you can use from your sketches to facilitate interaction between the user and the data. What there are are several contributed libraries that exist to provide a former graphical user interface to your sketches. And fortunately, these ones are all accessible through Processing's Add Library function. So what I'm going to do is, form a Processing sketch, it's just a blank one, I'm going to come over here to where it says Sketch and come down to Import Library. From there I go to Add Library at the top.

And Processing 2.0 has a new Library Manager that really facilitates a lot of this. And what I'm going to do is I'm going to come back up to the top and there are few libraries in particular that I want to look at. The first one, I can just go straight down to the GUI category. I want to get the first three of these; I want to get ControlP5 which has a range of controllers to build custom graphical user interfaces inside a sketch or separate windows. And I click Install, and that one's going to show up in just a moment. It's downloading and it's installing.

By the way, you may have noticed we've got a lot of red type down at the bottom which would make you think that things are falling apart. I assume this is due to some sort of incompatibility between some of the libraries and some of the alpha function in the Processing. Most of this will have no effect of what we're doing, so feel free to go ahead and just try running your sketches. I haven't had any trouble. I've been working this way for months. Next is GUI Components, a set of 2D GUI, which of course stands for graphical user interface, controls and multiple windows support. I'm going to install that.

It's starting and downloading. There we go. And the last one is Guido here, because that starts with GUI and that's a cross mode GUI library, so I'm going to install that one. I just want to show you examples from each of these things. I'm going to need to quit Processing and then open it back up. Let's go to File > Quit, and now that we're back open I can go to File > Examples, get the window here on this side. And now if I hit Contributed Libraries, you'll see that the three new libraries are all there, and I'm going to show you some very quick examples from each one of them and what they're able to do for your Processing sketch.

And the basic idea here is that all of them contain classes of objects that can be used, like buttons and sliders and knobs and rotators, that you can then integrate as objects into your own drawings. So let's take a quick look at ControlP5 first. By the way, P5 is from an old sort of abbreviation for Processing. At one point, the creators spelled Processing with fives instead of the Ss and the P5 came from that. But it has been a while since that one. First off, let's look at controllers. We have for instance check boxes, and I'm just going to click on this example, so you can see what it looks like.

And see what we're doing we're importing the library and then you create the class and an object within that class both for the CP5 and then we have a check box that gets created in this one. And these are the parameters that can be adjusted, and voila! You see that when I click on it, it changes the color in the circle. Also we get messages in the console. This makes it possible for you to click on a box, assign functionality to it, and affect another part of your drawing.

Let's come over here and try another one. I will close that and we'll just look at the slider. And in this case, it's just a matter of being able to assign values and you see how the background is changing from black up to white as we go through. Similarly, the slider down here is made to decode only discrete values as it slides across. Same for this one. And so three different kinds of sliders and what's kind of nice is they all fit very well with the aesthetics that usually go in Processing.

These are very clear, clean ones, and they give you a lot of options for incorporating new functionality in your own drawings. I'll close the ControlP5 and take a quick look at GUI components. What we have here is knob configurations, and we have some neat arc knobs that we're able to include. By moving these around you'll see how the values change on the bottom-left. We can also make it so that you actually have to move it in the angle, and make the code and it appears down at the bottom.

So this is a great way of including some of these controllers in your own things. These are all objects that are instantiations of custom classes for the knobs. Take a look at one other here, the timer, kind of a comical one, and what she creates what it calls the Balls of Vesuvius. And what we're able to control is how fast things fly out. And then they become much faster, and now they stop. And so an illustration of a way that you can use the buttons on the sliders to effect the interactive elements of your own sketch, so I'm going to close both of those, and just run through one more example in the Guido.

Let's take a look at button boxes and all this is, is indicating whether you have selected a button or not. You see I click on it; it stays clicked until you go back. Very fundamental things, but it's nice to be able to use the shortcut classes and objects as opposed to having to create each of these from scratch. It makes a little easier to incorporate the interactive functionality. Can I suggest that you spend a little bit of time with each of these three libraries finding out how well they work for you and how well you are able to incorporate them to add extra functionality to your own sketches.

Show transcript

This video is part of

Image for Interactive Data Visualization with Processing
Interactive Data Visualization with Processing

72 video lessons · 12124 viewers

Barton Poulson
Author

 
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  1. 3m 16s
    1. Welcome
      58s
    2. What you should know
      1m 22s
    3. Using the exercise files
      56s
  2. 11m 51s
    1. Overview of data visualization
      11m 51s
  3. 11m 53s
    1. Installing Processing
      3m 38s
    2. Overview of Processing
      4m 5s
    3. Exploring libraries
      4m 10s
  4. 1h 1m
    1. Basic setup
      7m 31s
    2. Drawing points
      4m 37s
    3. Drawing lines
      5m 6s
    4. Drawing ellipses and circles
      5m 24s
    5. Drawing arcs
      6m 54s
    6. Drawing rectangles and squares
      4m 58s
    7. Drawing quadrangles
      3m 25s
    8. Drawing triangles
      2m 55s
    9. Drawing polygons
      3m 37s
    10. Drawing simple curves
      4m 54s
    11. Drawing complex curves
      6m 46s
    12. Drawing Bézier curves
      5m 38s
  5. 54m 3s
    1. Introduction to variables
      10m 44s
    2. Understanding variable scope
      6m 53s
    3. Modifying variables
      9m 8s
    4. Creating arrays
      9m 53s
    5. Modifying arrays
      6m 37s
    6. Creating strings
      7m 3s
    7. Modifying strings
      3m 45s
  6. 1h 2m
    1. Incorporating randomness
      7m 59s
    2. Using Perlin noise
      4m 24s
    3. Shuffling with Java
      3m 30s
    4. Specifying line attributes
      8m 2s
    5. Changing placement modes
      5m 45s
    6. Understanding color attributes and functions
      4m 16s
    7. Exploring color spaces
      7m 44s
    8. Using color palettes
      7m 5s
    9. Transforming the grid
      8m 38s
    10. Exploring the attribute matrix
      5m 33s
  7. 52m 7s
    1. Building code blocks
      5m 57s
    2. Writing a while loop
      3m 52s
    3. Using for loops
      5m 35s
    4. Creating conditionals
      14m 50s
    5. Working with easing
      10m 51s
    6. Creating spirals
      11m 2s
  8. 18m 55s
    1. Mouse tracking
      3m 54s
    2. Hovering and clicking
      11m 16s
    3. Understanding keyboard interaction
      3m 45s
  9. 27m 32s
    1. Specifying fonts
      6m 43s
    2. Using images
      5m 51s
    3. Playing a video loop
      6m 20s
    4. Exporting video
      3m 47s
    5. Adding sound
      4m 51s
  10. 20m 49s
    1. Creating functions
      11m 48s
    2. Creating classes and objects
      9m 1s
  11. 31m 10s
    1. Using embedded data
      5m 26s
    2. Working with appended text data
      6m 4s
    3. Working with appended tabular data
      10m 26s
    4. Reading XML data
      9m 14s
  12. 48m 17s
    1. Generating dot plots
      11m 11s
    2. Building scatter plots
      10m 0s
    3. Making line plots
      9m 55s
    4. Creating bar charts
      9m 12s
    5. Checking out examples of maps, hierarchies, and networks
      7m 59s
  13. 20m 57s
    1. Introducing some principles of 2D design
      13m 44s
    2. Understanding color theory
      7m 13s
  14. 24m 46s
    1. Interacting with zooming, rotating, and sliding
      6m 26s
    2. Implementing slicing
      6m 47s
    3. Using rollovers
      5m 58s
    4. Introducing the GUI libraries
      5m 35s
  15. 10m 35s
    1. Sharing via OpenProcessing and other sites
      3m 19s
    2. Saving as a desktop application
      2m 42s
    3. Saving as JavaScript
      1m 47s
    4. Saving as an Android application
      2m 47s
  16. 2m 38s
    1. Where to go from here
      2m 38s

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