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Detecting gaps in Live Paint groups

From: Illustrator Insider Training: Drawing without the Pen Tool

Video: Detecting gaps in Live Paint groups

In the previous movie we saw how we're able to actually take open paths and put them into a Live Paint Group and still be able to fill regions, but in the case here of this ear of Mister Zee we notice that there were certain areas that did not even touch each other, they seem to be open. Meaning there were gaps in my artwork yet I'm still able to apply fill colors to those areas as if they were closed. So what allows that to happen inside of this world of Live Paint? Because if we kind of take a step back for a moment, we can almost start to define some set of loose rules for working with Live Paint.

Detecting gaps in Live Paint groups

In the previous movie we saw how we're able to actually take open paths and put them into a Live Paint Group and still be able to fill regions, but in the case here of this ear of Mister Zee we notice that there were certain areas that did not even touch each other, they seem to be open. Meaning there were gaps in my artwork yet I'm still able to apply fill colors to those areas as if they were closed. So what allows that to happen inside of this world of Live Paint? Because if we kind of take a step back for a moment, we can almost start to define some set of loose rules for working with Live Paint.

As we discussed Live Paint allows us to focus more on the visual aspects of artwork. So in others words, we might be able to say that forget about the underlying anchor points and paths, if artwork looks a certain way, if it looks like it's closed then we have the ability to assign a fill color or a fill attribute to that region. But now we see that there are certain areas that are not closed, they're almost close so we can kind of modify that by saying maybe the rule inside of Illustrator is that when dealing with Live Paint we can fill areas that are almost kind of closed you know they're just about there.

But again, this is always kind of been a problem for me to kind of digest inside of Illustrator, because I've always viewed Illustrator as an application that's perfect. We've these beautiful crisp lines inside of Illustrator. Everything inside of Illustrator is perfect even maybe to a fault. We've found that sometimes when you want to create certain types of artwork like grunge or children's artwork where you want to make it look like even that Illustrator kind of drew outside the lines. There is no way for Illustrator to draw outside the lines, because the fill always meets the stroke, it's always perfect.

So how can we get into some kind of situation inside of Illustrator where obviously something is not perfect yet I'm still able to fill that area? The answer is that within the realm of Live Paint we've something called Gap Detection. I'm actually going to select this Live Paint Group just by clicking on it right over here, notice it's now selected and if I go to the Object menu, I can go to Live Paint and choose something here called Gap Options. This brings up a dialog box where I see something called Gap Detection.

This is an incredibly powerful feature found within Live Paint. It allows me to make believe that certain areas if they're small are actually closed even though they might really be open. So we can see over here that Paint stops at: Small Gaps and I can actually choose whether that paint stops at Small, Medium or a Large Gaps or perhaps even more precisely I can specify my own Custom value for what I would consider a closed area. I just want to show you by the way if I turned Gap Detection off and I'm turning it off by the way for this Live Paint Group right now, because I've this Live Paint Group selected, but if I were to make this change without any Live Paint Group selected then this would apply to all the Live Paint Groups.

But if I click OK right now, notice I've turned off The Gap Detection, if I use my Live Paint Bucket tool, you notice that right now I've just one large fillable region. I don't have the two separate regions here. because I don't have Gap Detection turned on is ignored. So Illustrator sees that area as open, so I only have one visually close region that I can apply a fill to, so let's go back here to the Object menu. Let's go to Live Paint choose Gap Options and turn Gap Detection back on. Now when I click OK, I can apply separate colors to each of these regions even though a visual gap appears inside my artwork.

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This video is part of

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  1. 7m 4s
    1. Welcome
      1m 21s
    2. The evolution of vector drawing
      3m 46s
    3. Getting the most out of this training
      1m 30s
    4. Using the exercise files
      27s
  2. 39m 2s
    1. Plotting points vs. drawing paths
      5m 36s
    2. Drawing artwork vs. building artwork
      7m 59s
    3. The keyboard shortcuts you HAVE to know
      8m 52s
    4. Groups and layers really do matter
      3m 11s
    5. Taming Smart Guides and the Bounding Box
      10m 53s
    6. Do you need a drawing tablet?
      2m 31s
  3. 47m 51s
    1. To sketch or not to sketch?
      2m 32s
    2. Setting up a template layer for your sketch
      3m 37s
    3. Optimizing default settings for drawing
      5m 27s
    4. Using the primitive shapes tools
      5m 7s
    5. Mastering the modifier keys
      2m 8s
    6. Mastering the transform tools
      6m 37s
    7. Creating curves with the Reshape tool
      6m 44s
    8. Using the Smooth tool
      3m 35s
    9. Using Simplify to create smooth paths
      3m 2s
    10. Recording an action for the Simplify command
      5m 2s
    11. Mirroring art for speed and accuracy
      4m 0s
  4. 50m 18s
    1. Deconstructing the Pathfinder panel
      1m 56s
    2. Using the Shape Modes functions
      12m 4s
    3. Using the Pathfinder functions
      13m 4s
    4. Understanding how compound shapes work
      11m 45s
    5. Understanding why compound shapes exist
      7m 32s
    6. Exploring additional Pathfinder options
      3m 57s
  5. 52m 51s
    1. Why Live Paint was created
      10m 45s
    2. Creating a Live Paint group
      4m 21s
    3. Using the Live Paint Bucket tool
      7m 8s
    4. Using Live Paint with open paths
      5m 6s
    5. Detecting gaps in Live Paint groups
      3m 42s
    6. Adding paths to a Live Paint group
      5m 34s
    7. Using the Live Paint Selection tool
      6m 28s
    8. Releasing and expanding Live Paint groups
      2m 59s
    9. Understanding how Live Paint works
      6m 48s
  6. 27m 37s
    1. Why the Shape Builder tool was created
      4m 18s
    2. Focusing on the big three: Add, Subtract, and Divide
      2m 27s
    3. Using the Shape Builder tool to add and subtract artwork
      9m 50s
    4. Using the Shape Builder to divide artwork
      3m 48s
    5. Building and coloring artwork at the same time
      3m 50s
    6. Using Gap Detection with the Shape Builder tool
      3m 24s
  7. 23m 2s
    1. Understanding how variable widths work
      8m 25s
    2. Modifying width points along a path
      7m 9s
    3. Saving time with width profiles
      5m 14s
    4. Turning variable width strokes into filled paths
      2m 14s
  8. 28m 21s
    1. Understanding how the Pen and Pencil tools differ
      4m 41s
    2. Adjusting the behavior of the Pencil tool
      7m 5s
    3. Using the Path Eraser tool
      1m 17s
    4. Drawing with the Calligraphic Brush tool
      5m 43s
    5. Drawing with the Blob Brush tool
      5m 53s
    6. Using the Eraser tool
      3m 42s
  9. 3m 44s
    1. Looking at the VectorScribe plug-in
      2m 16s
    2. Next steps
      1m 28s

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