Sử dụng Warp rối toàn mới Các rối Warp công cụ mới trong CS5, và nó sẽ cho bạn nhiều kiểm soát khi nói đến việc thay đổi một cách, hình ảnh hai chiều phẳng trước đây trông. Nó hoạt động bằng cách đặt một lưới trên vùng đã chọn trong hình ảnh của bạn, cho bạn khả năng di chuyển dọc và các khu vực cá nhân của hình ảnh, hầu như thể nó là một mảnh vải. | Part VI Artistic Effects FIGURE Protecting the alpha channel and not the skin tones is the best option. Using the all-new Puppet Warp The Puppet Warp tool is new in CS5 and it gives you lots of control when it comes to changing the way a previously flat two-dimensional image looks. It works by placing a mesh over the selected area in your image giving you the ability to warp and move individual areas of the image almost as if it were a piece of fabric. Using pins to hold areas in place and others to move your image you can choose which areas to move how they ll move and how far. It s fun to try on an image with several independent areas. Figure shows a spider on its own layer. Using Puppet Warp you can move each of her legs independently. 634 Chapter 19 Distorting Images FIGURE The independent nature of each one of these spider s legs makes her ideal for playing with the Puppet Warp tool. Follow these steps to use Puppet Warp on the spider On the Web Site Find the PSD of this spider saved as Figure 19-15 on the Web site. 1. Select the layer containing the cutout of the spider. 2. Choose Edit C- Puppet Warp. This changes the options bar and places a grid over the spider as shown in Figure . You can change the density of the mesh in the options bar. Increasing the density gives you control over more specific areas and decreasing the density allows you to move larger areas. 3. Set the expansion found in the options bar. The expansion determines how many pixels outside the selected object the mesh will extend. A larger expansion makes movements larger and less precise. The default expansion of 2 pixels works well for this exercise. 4. Click different areas of the spider to place pins in different places. Every time you place a pin that spot on the spider is locked down and doesn t move unless you drag the pin. When you do move a pin it uses the closest pin as a fulcrum to rotate the selected area around. For instance if you place just one pin on
