tailieunhanh - Photoshop cs5 by steve Johnson part 44

Sử dụng tùy chọn từ với Freeform Pen Tool Tùy chọn thay đổi từ công cụ Freeform Pen thành một công cụ vẽ vector từ. Ví dụ, chọn tùy chọn lực lượng từ các công cụ để thực hiện theo các rìa nhìn thấy được của một đối tượng trong cửa sổ tài liệu. Các tùy chọn từ chỉ thị các công cụ Freeform Pen để xác định các thay đổi trong độ sáng giữa một đối tượng và hình nền của nó. . | Using the Magnetic Option with the Freeform Pen Tool The Magnetic option changes the Freeform Pen tool into a magnetic vector drawing tool. For example selecting the Magnetic option forces the tool to follow the visible edge of an object in the document window. The Magnetic option instructs the Freeform Pen tool to identify the shifts in brightness between an object and its background. It s a great way to make a difficult path. Once you click to define the starting point it s not necessary to hold down the mouse just move the mouse while closely following the visible edge of the image. If you get to a tricky point where the Freeform Pen doesn t know what to do just click your mouse to add a user-defined anchor point. Use the Magnetic Option with the Freeform Pen Tool Open a document. Select the Freeform Pen tool on the toolbox. Select the Magnetic check box on the Options bar. IMPORTANT When using the Magnetic option with the Freeform Pen tool you cannot create an open shape. Click the Shape Layers or Paths button. Position the Freeform Pen tool over the edge of a shape and then click and release the mouse. Drag in the document window using your mouse or drawing tablet pen to follow the visible edge. The magnetic option helps you follow the edge more precisely. Close the shape by dragging the Freeform magnetic Pen tool over the shape s starting point and then releasing when you see a small circle appear underneath the tool or by double-clicking. Starting point r lOM RC8 S Chapter 11 Using the Paths Panel 271 Adding and Deleting Anchor Points Creating a path is not necessarily the end of the job in fact there are many ways you can modify a path once it s been created. For example you can add subtract or delete anchor points on an existing path. You can also modify those points to conform to any desired shape. In addition existing anchor points can be modified to change the segments connecting the points. Just like anything else in Photoshop paths are .