Sử dụng mặt nạ clipping Khi các lớp được hình thành vào một clipping mask, nội dung của các lớp dưới cùng, được gọi là cơ sở "" lớp, clip (giới hạn hiển thị các điểm ảnh trên) các lớp trên nó. Chế độ và độ mờ đục của lớp cơ bản - đó có thể là một loại hình, hình ảnh, Smart Object, hoặc lớp hình dạng - được áp dụng cho các lớp cắt bớt. | 306 Chapter 18 Using clipping masks When layers are formed into a clipping mask the content of the bottommost layer called the base layer clips limits the display of pixels on the layers above it. The mode and opacity of the base layer which can be a type image Smart Object or shape layer is applied to the clipped layers. To create a clipping mask 1. Position the base layer so it is stacked directly below the successive layers to be clipped. 2. Do one of the following Shift-click the layers to be clipped not the base layer then press Ctrl-Alt-G B Alt-click Option-click the line between two layers the pointer becomes two overlapping circles . Right-click a layer to be clipped not the base layer and choose Create Clipping Mask. The base layer name has an underline the thumbnail for each clipped layer has a downward-pointing arrow and is indented. 3. Optional To include more layers in the mask either repeat the preceding step or restack other layers between existing layers in the mask. C D All the layers to be put in a clipping mask must be listed consecutively. When creating a clipping mask of layers in a group all the layers including the base layer must be part of the group. Note When a layer is released from a clipping mask any masked layers above it are also released. To release a layer from a clipping mask Do either of the following Alt-click Option-click the line below the layer to be released. Click a layer to be released not the base layer then press Ctrl-Alt-G Cmd-Option-G. A The original image contains five layers. An editable type layer is obscured by the image layers. Four layers are selected. We pressed Ctrl-Alt-G Cmd-Option-G. The clipped layers are now indented and the base layer name SKI is underlined. To release an entire clipping mask Alt-click Option-click the line above the base layer. To merge all the layers in a clipping mask into a base image layer and apply the clipping effect to the result click the base layer then press Ctrl-E
