tailieunhanh - Photoshop cs5 by steve Johnson part 45

Chuyển đổi các điểm thẳng và điểm cong Sớm hay muộn bạn sẽ gặp phải một tình huống mà bạn muốn chuyển đổi một điểm neo từ cong để thẳng hoặc thẳng đến cong. Thay vì cố gắng để thu hẹp đường định hướng vào điểm neo (một nhiệm vụ khó khăn), hoặc cố gắng để kéo đường định hướng không tồn tại từ một điểm neo thẳng, Photoshop cung cấp cho bạn một công cụ chuyển đổi hữu ích được gọi là công cụ Convert Point | Converting Straight Points and Curved Points Sooner or later you ll encounter a situation where you want to convert an anchor point from curved to straight or straight to curved. Rather than try to collapse the direction lines into the anchor point a difficult task or try to drag nonexistent direction lines from a straight anchor point Photoshop gives you a useful conversion tool called the Convert Point tool. The Convert Point tool lets you convert existing points on a path. For example to convert a curved point into a straight point click once on the curved anchor point and it s instantly converted into a straight point. To convert a straight point to a curved point simply drag on the anchor point and the line changes from straight to curved. Convert Points Open a document that contains a path or create a new path. Select the Paths panel and then select the path you want to modify. Select the Convert Point tool on the toolbox. Click on a curved anchor point to convert it into a straight point. Click and drag a straight anchor point to convert it into a curved point. Did You Know You can change the curve of a segment line with a click and drag. Click the Direct Selection tool and then drag directly on the line not the anchor point. Chapter 11 Using the Paths Panel 277 Working with Clipping Paths Image clipping paths allow you to isolate part of an image and make everything else such as a white background transparent when the image is printed or placed in another application such as QuarkXPress or Adobe Illustrator. You can place a Photoshop PSD file directly in Adobe InDesign and retain transparency otherwise you can create an image clipping path. To create an image clipping path create a well defined path around the part of the image you want convert the path to a clipping path on a transparent background and then save and use it in other applications. Clipping paths work to create a transparent area without the sacrifice of the actual image. Therefore it is not