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Real World Adobe Illustrator CS5: Creative Drawing

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Creative drawing in Illustrator can be fun to use and also be rather addictive. Mordy Golding shows you how to use Live Paint and how to work with the Pencil Tool, brushes, and Gradient Mesh to get the color, composition, texture, and feel you want.
This chapter is from the book

This chapter is from the book

In the previous chapter, we discussed technical drawing. On the other side of the spectrum is creative drawing, where the focus is on the appearance of the path. In creative drawing, you couldn't care less about anchor points and control handles. The importance here is color, composition, texture, and feel.

Unfortunately, many people get caught up in the technical drawing aspect of Illustrator. After experiencing frustration in the attempt to grasp the concept of the underlying vector graphics structure, they never realize there's an entirely different side of Illustrator—a side that not only can be fun to use but that can also be rather addictive.

The Live Paint feature adds an entirely new dimension to drawing and editing in Illustrator, and the new Bristle brush helps you create truly expressive artwork. So put on your creative hat and come inside—this chapter has something for everyone.

The artwork featured throughout this chapter comes from Cheryl Graham (iStockphoto; username: freetransform).

Drawing with Live Paint

Although you can appreciate the power and precision that vector graphics have to offer, you can also appreciate how easy it is to use pixel-based paint programs such as Photoshop or Corel Painter to easily apply color to artwork. In a paint program, you can perform flood fills, in which you choose a color and use a paint bucket–like tool to fill areas with color. When working with vectors, you have to create distinct paths and shapes in order to apply a fill to add color. In other words, you can't just apply a fill to any arbitrary area on your artboard; rather, you need to select a distinct object to which to apply the fill. This need to create distinct objects can make drawing in Illustrator seem nonintuitive or time-consuming at best.

Live Paint introduces a new concept of working with vector paths, where you can colorize vectors and edit them without having to follow the traditional vector rules we've been covering up to this point. This feature makes it a lot easier to draw (and edit) in Illustrator. Let's take a closer look.

Using Live Paint to Color Paths

First let's draw something using Live Paint so you can get a feel for what the feature is all about. Then we'll discuss how the feature works, and at that point, you'll better understand how to use it in a meaningful way. The art itself may not be that exciting to look at, but the concepts you learn will be priceless.

  1. Using the Line Segment tool, draw two parallel vertical lines and two parallel horizontal lines to create a rough outline of a rectangle. It doesn't matter if the lines or spacing aren't perfect; for this exercise, you just want to make sure the lines cross each other ( Figure 4.1).
    Figure 4.1

    Figure 4.1 Using the Line Segment tool, you can create a simple tic-tac-toe graphic.

  2. Select the four lines, and select the Live Paint Bucket tool (it's grouped with the Shape Builder tool in the Tools panel). As you move your pointer over the four paths, the paths become highlighted ( Figure 4.2).
    Figure 4.2

    Figure 4.2 If you have the Live Paint Bucket tool selected, Illustrator shows a tool tip to create a Live Paint group when your pointer passes over a valid selection.

  3. Click once to create a Live Paint group.
  4. Pick a fill color (a solid color, gradient, or pattern) from the Control or Swatches panel, and move your pointer over the center area of the four paths.

    The enclosed area in the middle becomes highlighted in red, which indicates an area that you can fill with color ( Figure 4.3).

    Figure 4.3

    Figure 4.3 Illustrator's Live Paint Bucket tool highlights areas that can be filled as your pointer moves over them, even if the Live Paint groups aren't selected.

  5. Click once with the Live Paint Bucket tool to fill the highlighted area ( Figure 4.4).

    Figure 4.4

    Figure 4.4 With one click of the Live Paint Bucket tool, you can fill areas that appear to be enclosed, even though there isn't an actual vector object there.

    The resulting behavior is very "Photoshopesque"—you've filled an area that looks like it is enclosed on all sides, but you didn't apply a fill to an actual object.

  6. Select the Direct Selection tool, then select one of the anchor points on one of the paths, and move it just a bit.

    Notice that the color in the area updates to fill the center ( Figure 4.5). If you move one of the paths far enough so that it no longer touches the other paths, you'll find that the fill color disappears, because there is no longer an enclosed area to fill ( Figure 4.6).

    Figure 4.5

    Figure 4.5 The fill areas in a Live Paint group update automatically when you're moving the paths with the Direct Selection tool.

    Figure 4.6

    Figure 4.6 When editing the paths in a Live Paint group, creating an opened area results in the loss of the fill.

Understanding Live Paint groups

Let's take a moment to understand how Live Paint works. When you select several overlapping paths or shapes and click them with the Live Paint Bucket tool, you are creating a Live Paint group. This is a special kind of group in which the object stacking order is thrown out the window. All objects in a Live Paint group are seemingly combined onto a single flat world, and any enclosed area acts as a closed shape that can be filled with color.

Although clicking several selected paths with the Live Paint Bucket tool (K) is the easiest way to create a Live Paint group, you can also select several paths and choose Object > Live Paint > Make (or press Command-Option-X [Ctrl-Alt-X]) to create a Live Paint group. Once you've created a Live Paint group, however, you may find that you want to add paths or shapes to the group. To do so, draw the new paths, and use the Selection tool to select the existing Live Paint group and the new paths. Then choose Object > Live Paint > Add Paths. The new paths will become part of the group, and any intersecting areas will act as individual areas that you can fill with color.

Live Paint groups can also use the isolation mode feature that enables you to draw objects directly in existing groups. Using the Selection tool, double-click an existing Live Paint group to enter isolation mode, indicated by a gray bar that appears across the top of the document window. Now switch to any shape or path tool to add paths directly to the Live Paint group (Figure 4.7). This ability to add paths directly to a Live Paint group is extremely powerful because it allows you to define regions for color in just a few quick steps. Exit isolation mode by pressing the Esc key.

Figure 4.7

Figure 4.7 In group isolation mode, you can draw new paths in an existing Live Paint group to instantly create additional regions that can be filled with color.

It's important to understand that the geometry of the paths themselves define the paintable regions. So if you wanted, you could set the stroke attributes for the additional paths to none (Figure 4.8).

Figure 4.8

Figure 4.8 Even though the strokes aren't visible, they still allow you to fill the areas they define.

In the Tools panel, double-click the Live Paint Bucket tool to change its behavior. By default, the Live Paint Bucket tool affects only the fill of a path, but you can also set the tool to apply color to strokes as well (Figure 4.9). The Cursor Swatch Preview option refers to the three boxes that float above the Live Paint Bucket tool pointer (Figure 4.10). These boxes represent swatches that appear in the Swatches panel, and when the Live Paint Bucket tool is active, you can press the arrow keys on your keyboard to select a color swatch. This allows you to choose colors and quickly fill areas without having to return to the Swatches panel. Additionally, you can specify the color that the Live Paint tool uses to highlight closed regions.

Figure 4.9

Figure 4.9 You can set the Live Paint Bucket tool to apply color to strokes in a Live Paint group as well.

Figure 4.10

Figure 4.10 The three colors that appear above the Live Paint Bucket tool represent the selected color in the Swatches panel and each swatch immediately to the left and right of that swatch.

Dealing with Gaps in Your Artwork

Until now, all the regions you were filling with color were completely closed. But what happens if your paths don't exactly meet each other? That's where the Gap Detection feature can really make a difference. You need to choose Object > Live Paint > Gap Options to control the settings for this feature (Figure 4.11). If you don't have any Live Paint groups selected when you choose this option, the settings you pick become the default settings for all new Live Paint groups. You can specify different gap options for each selected Live Paint group in a document as well.

Figure 4.11

Figure 4.11 The Gap Options dialog box makes it possible to fill areas in a Live Paint group even if they aren't completely enclosed.

With Gap Detection turned on, you can specify that paint will fill areas containing small, medium, or large gaps (Figure 4.12). Additionally, you can specify an exact amount for how big a gap can be before Live Paint considers it an open area instead of a closed one. Illustrator previews gaps in the selected color, and you can also have Illustrator fill any gaps in an object with physical paths (Illustrator always uses straight paths to do so).

Figure 4.12

Figure 4.12 Even though the paths don't actually enclose the areas completely, you can still fill the areas with the Gap Detection feature.

Releasing and Expanding Live Paint Groups

Live Paint groups can be expanded, at which time they behave like ordinary vector paths. The appearance of an expanded Live Paint group remains identical to the original, but it is split into multiple objects for both fills and strokes. This is similar in concept to expanding live effects. To expand a selected Live Paint group, either click the Expand button in the Control panel or choose Object > Live Paint > Expand.

From a production standpoint, you don't need to expand Live Paint groups in order to prepare a file for print. Live Paint groups print perfectly, because Illustrator performs the necessary expansion of paths at print time (similar to live effects).

Additionally, you can choose Object > Live Paint > Release to return a Live Paint group to the original paths used to create it. Whereas expanding a Live Paint group results in objects being broken up in order to preserve appearance, releasing such a group preserves the geometry of the original paths, but the appearance or colors are lost.

Merging Live Paint Groups

If you have several separate Live Paint groups, you may want to combine them to edit them as one entire group. You can do so easily by selecting the different groups and clicking Merge Live Paint in the Control panel. Alternatively, you can choose Object > Live Paint > Merge. Just note that for Live Paint groups that consist of many complex paths, the Gap Detection feature impedes performance. You may experience better performance by splitting very large Live Paint groups into several smaller ones or by turning off Gap Detection.

Using Live Paint to Edit Paths

Live Paint allows you to apply attributes—such as fills and strokes—to paths based on their appearance as opposed to their actual makeup. It would be even nicer if you could actually edit your paths based on appearance as well, don't you think? Adobe was apparently reading your mind and added another tool to the mix—the Live Paint Selection tool (Shift-L)—that enables you to select portions of objects based on their appearance (Figure 4.13).

Figure 4.13

Figure 4.13 With the Live Paint Selection tool you can make selections based on the appearance of artwork, not the underlying vector construction of it.

Let's work through an example:

  1. Use the Line Segment tool to draw two perpendicular lines, creating an x.
  2. Select both paths, and press Command-Option-X (Ctrl-Alt-X) or choose Object > Live Paint > Make to convert the two paths into a Live Paint group.
  3. Select the Live Paint Selection tool, and click one of the paths.

    You'll notice that you can select each segment of the line individually. What were two paths before are now four line segments ( Figure 4.14).

    Figure 4.14

    Figure 4.14 Using the Live Paint Selection tool, you can select visual segments of a path.

  4. With one segment selected, press the Delete key to remove that segment from the path.
  5. Select another segment, and change its stroke ( Figure 4.15).
    Figure 4.15

    Figure 4.15 In a Live Paint group, you can easily apply different strokes to the segments of a path.

The Live Paint Selection tool can also select Live Paint areas (fills). If you have two overlapping shapes in a Live Paint group, you can select the overlap and delete it (Figure 4.16 on the following page). You can also double-click to select continuous areas of similar attributes and triple-click to select similar attributes across the entire Live Paint group.

Figure 4.16

Figure 4.16 The Live Paint Selection tool enables you to select any area of a Live Paint group.

At the end of the day, Live Paint adds a more flexible way to color and edit paths, and it also adds more value to the Pencil tool, because complete closed paths aren't required. The important point to remember is that a Live Paint group is a group, and anything you can do with a group in Illustrator you can do with Live Paint groups as well. For example, you can add attributes such as strokes to the Live Paint group for interesting effects. Experimenting with the Live Paint feature certainly helps you when you're editing paths, and the good news is that it's fun to use.

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