![]() Finally, I applied the Deformation>Fisheye Perspective Live Effect. I also cut out areas where the twine wasn’t wrapping around the ball. What I did was create circles and the Eyedropper along with a multi-color linear fill to fairly closely match the falloff of the twine strands in the texture. When a ball is wound out of twine, you’ll see small protrusions along the profile of the circular shape. At right, (hopefully!) you can see the difference between a circle and a ball of twine. Try as I might, by adding a drop shadow and some shading to the circle clipping the png file, the left illustration doesn’t go beyond a fancy circle. An Example of making a Circle into a Ball of Twineįigure 5 shows a circle filled with the Tiling Yarn.png file. So, to make textured shapes look like objects in 3D space, and not shapes filled with a texture, you need a strategy, and that’s the whole point of the steps to come. Bump mapping is good, but displacement mapping achieves a true 3D look because it actually pushes light areas away from the surface-including those partially obscured by the profile of the circle, to photorealistically depict a 3D sphere with exaggerated bumps. Bump mapping creates the illusion of areas extending and recessing from a surface by adding light colors to light areas, and shading the darker areas with shading falloff. The problem is that with bump mapping, you have not actually created areas across the shape that extend beyond the profile of a circle. The circle at left still looks like a circle, even though it has dimensional spots across its surface. Take a look at Figure 4, because shows a property of 3D objects that bump mapping cannot create. Now, if you filled a circle with this 3D texture, would you wind up with a 3D shape that has lots of pimples or whatever? No. As you can see in Figure 3, with a little twiddling of the controls, you can wind up with a pretty dimensional texture, and after applying the filter, you can recolor the grayscale result. Let’s see what Xara’s 3D Bump Map comes up with, using Figure 2’s texture as the target. This pattern was created in a free texture maker, Gentex, toward the middle of the page, but it could have been drawn with a little effort and feathering directly within Xara. It’s a Live Effect called 3D Bump Map toward the top of the Live Effects menu. One way to create your own textures is included in Xara. You can most likely find several of your own by checking out free textures on the web, but first you’ll need to work through the tutorial to know exactly what type of texture lends itself to a 3D fill for shapes. In Figure 1, you can see several dimensional seamless tiling patterns that are included in the tutorial download zip file this month. Displacement mapping is something Xara does not do because it’s a drawing and not a modeling program, but there’s no reason why you can’t achieve a true 3D look by manually adding and subtracting from a basic shape that’s been filled with a 3D-ish texture. However, there’s one much overlooked quality in 3D drawings that everyone who works with 3D programs is aware of: displacement mapping. ![]() What goes into this look can be found in traditional drawings and paintings: perspective, shading, lens length (fisheye, long lens and so on), symmetry, and other qualities that convince the audience that they could hold or step into the work. Compatible with different versions of Windows.There’s something irresistible to Xara artists about emulating the dimensional qualities of a photograph for the sake of brevity in this tutorial, let’s just call it the 3D look.More than 27 sketches for giving graphic objects later. ![]()
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