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今天小编为大家带来的是<谈ps系列（28）|ps变换功能讲解。
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Dear you, this is LearningYard Academy.
What Xiaobian brings to you today is<Talk about ps series (28) |PS conversion function explanation.
PART.1.
一、回顾：合并形状组件
在我们学习今天的知识前，回顾下上期所学的知识点：合并形状组件。合并形状组件是布尔运算的运用之一，在一些场合中我们需要将不同的形状组合，合并后的形状仍然可以单独选择，并没有真正的实现成为一个整体，使用合并形状组件可以使之成为一个整体。
PS可以对图像进行非常强大的变换操作，例如缩放、旋转、斜切、扭曲、透视、变形、翻转等。这次学习的内容是ps中的自由变换。
自由变换工具是指可以通过自由旋转、比例、倾斜、扭曲、透视和变形工具来变换对象的工具。快捷键：ctrl T
下面我们通过实际操纵进行讲解。
1、 Review: Merge shape components
Before we learn today's knowledge, review what we learned in the previous period: merge shape components. Merging shape components is one of the applications of Boolean operations. In some cases, we need to combine different shapes. The merged shape can still be selected independently, and it is not really realized as a whole. Using the merged shape components can make it a whole.
PS can perform very powerful transformation operations on images, such as scaling, rotating, beveling, twisting, perspective, deformation, flipping, etc. The content of this study is free transformation in ps.
Free transform tools refer to tools that can transform objects through free rotation, scale, tilt, twist, perspective and deformation tools. Shortcut key: ctrl T
Let's explain it through actual operation.
二、自由变换实例
下面让我们看自由变换的运用：
1、首先打开ps新建图层，创建几个矩形方便我们接下来的操作。选择需要我们进行自由变换的图形，摁住CTRL T；
2、这时所选的矩形四周出现轮廓线和控制变换方向的白色矩形，可以通过拖拽进行各个方向的变换。
3、自由变换的属性栏如下所示：X和Y表示图形的坐标，在画布中的位置变换，H和W代表按照百分比进行变换，在拖动时旁边会出现W和H展示实际尺寸。在不点击角标，可以对图案进行旋转，H后面的图标显示旋转的角度。
属性栏最右边有一个图标表示可以在自由变换和变形模式之间切换。当我们选择它以后，看见图案的角标出现了变化，此时边缘的圆点相当于锚点和锚杆，在此功能下我们可以自由的操作每一个角或者每一条边。这种操作在进行表情等方面很方便，但也存在弊端，无法确切的量化操作，没有数据展示。
在此操作下，点击属性栏中的变形，有一些固定的形状可以供我们选择。
确认变换形状：enter；
推出：键盘右上角esc；
2、 Free Transform Instance
Let's look at the application of free transformation:
- First, open ps to create a new layer and create several rectangles for our next operation. Select the graphic that needs us to transform freely, and press CTRL T;
- At this time, contour lines and white rectangles that control the transformation direction appear around the selected rectangle. You can drag and drop to transform in all directions.
- The attribute bar of free transformation is as follows: X and Y represent the coordinates of the graph, the position transformation in the canvas, H and W represent the transformation according to the percentage, and W and H appear next to it when dragging to show the actual size. You can rotate the pattern without clicking the corner marker. The icon behind H shows the rotation angle.
An icon on the right of the property bar indicates that you can switch between free transform and deformation mode. When we select it, we can see that the corner marker of the pattern has changed. At this time, the circle point of the edge is equivalent to the anchor point and anchor rod. Under this function, we can freely operate each corner or edge. This kind of operation is very convenient for expression, but it also has some disadvantages. It can not accurately quantify the operation and there is no data display.
Under this operation, click the deformation in the property bar, and there are some fixed shapes for us to choose.
Confirm transform shape: enter;
Push out: esc at the upper right corner of the keyboard;
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部分文字参考：百度百科
示例图片来源：百度
翻译：百度翻译
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