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Hướng dẫn sử dụng Coreldraw x5 - part 57 ppt

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3. You can keep using the current tool, the Shape tool; click the guy with his hat in his hand. Then choose Effects | Copy Effect | Perspective From. Click over the guy at left who has perspective as shown here, and the second object adopts the perspective of the first. 4. Repeat step 3 for the guy holding the writing pad. 5. Create a graph paper object that fills most of the page, and then give it a medium- gray fill and a white outline. Put it to the back of the illustration layer by pressing SHIFT+PAGE DOWN. 6. Put the graph paper in perspective to make a ground plane. Next, drag the top-left control handle to the right, and then drag the top-right control handle to the left until you see a vanishing point just above the graph paper object. Now drag the top and right-top control nodes down until the perspective looks like that shown in the figure. This object will not and should not be in the same perspective as the characters, but instead its perspective should be very distorted, suggesting a horizon at about the chest level of the characters. 7. Create a second graph paper object, fill it with medium gray, and give its outline a white property exactly like you did with the first object in step 5. Put it to the back of the drawing ( SHIFT+PAGE DOWN). 544 CorelDRAW X5 The Official Guide 8. If you haven’t already read Chapter 22 on shadows, here are the simple steps to “grounding” the characters on the graph paper below them: click one of the fellows, and then choose the Drop Shadow tool from the Effects group of tools on the toolbox. 9. Choose Perspective Top Left from the Presets drop-down on the property bar. With your cursor, click-drag to adjust the black control marker for the shadow until it looks correct. 10. Repeat step 9 with the two other commuters: select a guy, and then choose Effects | Copy Effect | Drop Shadow From, and click the first shadow (not the object casting the shadow) you defined. You can also add a shadow to the train and the cloud group of objects. Additionally, try moving the commuters up or down from their original position to increase the sense of depth in the scene. Your scene should look like Figure 18-4 now. The preceding tutorial might have been a bit of a workout, but look at what you’ve accomplished. Often, the effect you seek is accomplished through the use of a combination of CorelDRAW features. Unfortunately, there is no “create a complete piece of artwork” tool in CorelDRAW! Any object that has the perspective effect can be quickly put into editing mode when the Pick tool is the current tool, by double-clicking the object. CHAPTER 18: Working with Perspective 545 18 FIGURE 18-4 With the perspective effect and the use of a few drop shadows, you can build a virtual diorama. Mirroring Perspective Control Handles Occasionally in your design work, you might need to add perspective or adjust the existing perspective of an object so that the perspective is symmetrical. This is accomplished by holding CTRL+SHIFT while you click-drag a perspective control handle. Here’s a creative example of the use of a symmetrical perspective: in a new document, import Bowling.png, and then follow these steps. Building a Bowling Alley 1. With the Rectangle tool, create a tall rectangle, about 1" wide and 5" high. Fill it with a light brown color. 2. Drag and drop three copies, each to the right of the preceding one; first, hold CTRL to constrain your moves, then drag right, tap the right mouse button while holding the left, and then release both buttons to drop the copy. 3. Group the four rectangles; after selecting them, press CTRL+G, and then press SHIFT+PAGE DOWN to put them behind the imported PNG picture. 4. Choose Effects | Add Perspective. 5. While holding CTRL+SHIFT, click the bottom-right control node and then drag right. Strike! In Figure 18-5 you can see that this technique is a convenient way to set up symmetrical perspective. Optionally, you might want to use CTRL+SHIFT and then drag the top control nodes a little closer together to get the artistic effect, but you know the techniques now. Pre-Visualizing Designs in Perspective Often you’ll design something such as a pattern and want to see what it will look like as a garment, gift wrap, or some other physical piece of art before you pay to have the design printed; this is called pre-visualization (preVis), and you can do this in CorelDRAW with the perspective effect. In the following example, you’ll create a simple gift-wrap pattern; then, using perspective, you’ll virtually wrap a package. The package is provided for you as an image on layers in a CorelDRAW document. The following set of steps begins with importing A present.cpt, a layered PHOTO- PAINT image. You’ll move the image’s upper layer—the bow—to a new layer and then create an additional CorelDRAW layer to work below the bow but above the package to create a very effective illusion of gift wrap on the package. 546 CorelDRAW X5 The Official Guide Let’s use CorelDRAW’s Artistic media tool to create the gift wrap for the present in the following steps. After completing the tutorial, you can use a design of your own with this file in the future. Pre-Visualizing a Design on a Product 1. After creating a new document (choose Landscape orientation), press CTRL+I to import A present.cpt. Just click at the upper left of the page to place it to size. 2. Open the Object Manager from the Tools menu. Expand the A present.cpt entry to reveal the two image layers. To retain your sanity dealing with these “Layer” default names, click the “Layer 1” bitmap name to select it, click it a second time to open the name for editing, and then type Bow, because it’s the red bow on top of the present. 3. Click the New Layer button at the bottom left of the docker. Doing this creates a new default named “Layer 2.” CHAPTER 18: Working with Perspective 547 18 FIGURE 18-5 Create symmetrical perspective by holding CTRL+SHIFT while you drag a control handle. Hold CTRL+SHIFT, and then click-drag. The opposing control handle moves in opposite direction. 4. Click-drag the “Bow” entry on the Object Manager, and place it on the Layer 2 title to move the bow image to the new layer. 5. Create a new layer, by default named “Layer 3.” Click-drag it to below Layer 2. This is where you’ll be designing the gift wrap. 6. Choose the Artistic media tool from the Pen tool group on the toolbox. Then choose the Sprayer button on the property bar. You can use any preset you like; one of the festive Food presets is shown in the following figures. 7. Create a rectangular area by scribbling up and down, like making several Ws. 8. Choose Arrange | Break Artistic Media Apart (CTRL+K works, too). With the Pick tool, delete the parent black path that’s now visible. See Figure 18-6. 548 CorelDRAW X5 The Official Guide FIGURE 18-6 Create a pattern with the Artistic media Sprayer tool. Create a new layer. Move bitmap “Bow” to a new layer. Create a new layer; sandwich it between Layers 1 and 2. Arrange | Break Artistic Media Apart 9. Choose Effects | Add Perspective. With the Shape tool, drag, one at a time, the control handles for the effect to match the four corners of the face of the present, as shown here. 10. Duplicate the pattern (press CTRL+D), and then use the Shape tool to edit this duplicate (which also has the perspective effect applied) so it matches the four corners of the top side of the present. Because the bow is on the top layer, you’re actually adding the top pattern in perspective below the bow so it looks optically correct. 11. Repeat step 10 to create the left panel of the pattern on the present. 12. The pattern shouldn’t look totally opaque, but instead should take on a little of the shading on the blank present. The quickest way to apply transparency to the scores of objects that make up your artistic media stroke is to first turn it into a bitmap. First, let’s check out the resolution of the present image so the conversion of the gift wrap pattern isn’t unnecessarily larger than the present or bow images. Click either the Bitmap or the Bow entry on the Object Manager list, and then look at the status bar. The correct answer is 96 dpi. CHAPTER 18: Working with Perspective 549 18 13. Select one of the patterned sides, and then choose Bitmaps | Convert To Bitmap. In the Convert To Bitmap dialog Resolution box, choose 96. Check the Transparent Background check box and then click OK. 14. With the new bitmap selected, choose the Transparency tool on the toolbox. On the property bar, choose Uniform Transparency type, Multiply style, and then play with the amount of transparency your eye tells you looks best and that blends the pattern into the present. Repeat steps 13 and 14 with the other two sides of the gift, be sure to include a card, and then send it to someone who deserves a gift. This finished pre-visualization provides you and your client with a view of the goods you’ve designed as they will appear from the customer’s point of view, and perhaps this is the best “perspective” effect of all, as shown next. 550 CorelDRAW X5 The Official Guide You’ve seen in this chapter how to take a drawing, several objects, and even a complete design, and put a 3D spin on it. Perspective effects can help a client visualize what a design should look like when projected into real space, and at the least the perspective effect is a fun and quick method for embellishing a drawing that needs a “certain something” to lift it off the page. Chapter 19 takes you into a more complete visualization of 3D within a 2D drawing, as you explore the extrude effect in CorelDRAW. Bring along what you now know about vanishing points, and bring along an object or two that you want to add another dimension to—literally! CHAPTER 18: Working with Perspective 551 18 This page intentionally left blank CHAPTER 19 Extruding Objects 553 . Break Artistic Media Apart (CTRL+K works, too). With the Pick tool, delete the parent black path that’s now visible. See Figure 1 8-6 . 548 CorelDRAW X5 The Official Guide FIGURE 1 8-6 Create a pattern. additional CorelDRAW layer to work below the bow but above the package to create a very effective illusion of gift wrap on the package. 546 CorelDRAW X5 The Official Guide Let’s use CorelDRAW s. design printed; this is called pre-visualization (preVis), and you can do this in CorelDRAW with the perspective effect. In the following example, you’ll create a simple gift-wrap pattern; then, using

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