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The Visual Story, 2nd Edition by Bruce Block

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CHAPTER 4 Line and Shape

Lines are everywhere in the real world. For example, doorways have two vertical lines, and a volleyball has one curved line. The real world is also full of shapes. A door is a rectangle and volleyball is a sphere. Lines and shapes are closely linked because they define each other.

Line

Line differs from the other visual components, because lines appear only due to tonal or color contrast. Depending on this contrast, a line can be revealed or obscured. Lines exist in an infinite number of ways in the real world and in the screen world. To make recognizing them easier, lines can be divided into seven perceptual types: edge, contour, closure, intersection of planes, imitation through distance, axis, and track.

Edge

The apparent ...

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