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Tham khảo tài liệu 'hướng dẫn sử dụng coreldraw x5 - part 64', công nghệ thông tin, đồ họa - thiết kế - flash phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 614 CorelDRAW X5 The Official Guide Frequency 48 - - Frequency 21 Local Using the Local distortion option has the effect of varying the Amplitude value of your distortion effect around the center origin. At the center of the distortion effect Amplitude is at its maximum value. Amplitude then tapers to 0 as the distortion emanates from the center origin of the effect. The results of applying the Local distortion option while the Frequency is varied are shown here TIP To clear a distortion effect click Clear Distortion Effect in the property bar or choose Effects Clear Distortion. If you ve applied successive distortions each distortion is cleared individually in order from the last distortion applied to the first so you can step out of the effect incrementally. CHAPTER 20 Envelope and Distortion Effects 615 To bring all this Zipper talk down to a practical level the following illustration shows two creative commercial uses. At left the Zipper distortion is used as a coupon border. The only finessing needed was to apply a dashed Outline pen style. At right the diagram of a sewing pattern is gussied up a little by making the cut marks look as though real pinking shears were used. Twister Distortion Twister distorts the outline paths and nodes of objects by rotating the outer areas around the center which is largely undistorted either clockwise or counterclockwise to achieve an effect much like a child s pinwheel toy. Twister options on the property bar include rotation direction rotation amount and degree of additional rotation. 20 616 CorelDRAW X5 The Official Guide Original ellipse 35 cloclwise Two complete clockwise rotations 240 FIGURE 20-12 Using simple objects and the Twister mode of the distort effect you can create wild organic shapes. Controlling a Twister distortion is simple rotation can be clockwise or counterclockwise but increasing the rotation really dramatizes the effect of this mode. Whole rotations can be set to a maximum of 9 additional rotations .
