我们可以把Photoshop的路径运算想象为搭积木,各种各样的积木搭在一起,形成一个复杂的新形状。在Photoshop路径中,我们可以进行相加、相减运算、交叉区域和重叠除外运算一共四种方式,组合出很多不同的造型。
简单两者相加得到新的外形
为了不引起
我们可以把Photoshop的路径运算想象为搭积木,各种各样的积木搭在一起,形成一个复杂的新形状。在Photoshop路径中,我们可以进行相加、相减运算、交叉区域和重叠除外运算一共四种方式,组合出很多不同的造型。
简单两者相加得到新的外形
为了不引起逻辑上的混乱,我们作一个约定,我们把路径框起来的那部分称为“路径内部”,它是从视觉上看到被路径包围的部分。另外我们还有一个词叫“路径区域”,它是指我们指定路径的内部区域在哪里。它既可以在路径内部,也可以在路径外部。
我们来看图1。使用形状工具,勾选路径选项,用蜗牛的形状建立出一条路径来。图1标示1处就是相加运算按钮。它表示当前的形状是要加入到已经存在的形状之中,如果这是第一条路径,则以路径内部作为路径区域。
路径区域在路径面板中是用白色显示的,而区域外部则用深灰色显示。我们看图1,蜗牛被用白色显示。当我们把路径作为选区载入的时候,区域会变为选区。
我们在建立了路径之后,还可以改变创建时的运算属性。使用路径选择工具选择这条路径,可以看到在属性栏中会出现同样的运算按钮。我们选择第二个(图2标示2):从路径区域减去。此时我们再看路径面板,蜗牛的外部成为了路径区域(图2),当我们再把路径载入选区的时候,就会选择蜗牛的外部。
这个运算选项的作用是:如果与别的路径相运算,则从别的路径区域中减去这个路径区域,举个例子,我们画出一张桌子,用刀砍去一块,则我们讲从桌子上减去一个角。
如果是直接建立路径,则路径外面的广大范围则成为路径区域。
下面我们使用形状工具中的圆形,与当前的蜗牛路径进行运算,看一看如何做出两者相交产生的多种效果,并学习将它们组合成一体的方法。
首先我们选择蜗牛路径,单击属性面板上的“添加到形状区域”按钮,将蜗牛路径的内部变为路径区域。
然后建立一个圆形路径,我们将它的运算属性设置为“添加到形状区域”,将它叠在蜗牛的壳上。在路径面板中观察白色的形状范围,我们可以看到,虽然是两条路径,但它们都使用了相加的运算,所以两者的形状范围被合在一起(图3)。
我们试一试各个选项,看一看它们相交在一起会得到什么样的运算结果(图4)。
从路径区域减去已经讲过了,交叉路径区域取路径相交的部分作为路径区域,重叠路径区域除外则将路径先相加,然后将重叠的部分减去,这个选项用得比较少。制作完成后,单击组合,就可以将多个路径组合成一个啦!我们看一看通过路径运算制作的图像。

Adobe Photoshop goes beyond simple editing and becomes a creative tool for artists and designers. 1) It provides a wealth of tools such as brushes, stamp tools, blend modes and layer styles, supporting adjustments from basic images to complex digital paintings and 3D designs. 2) These tools implement functions through pixel-level operations, allowing users to create unique visual effects.

Photoshop offers two pricing models: single purchase and subscription service. 1. Single purchase: Pay $699 in one lump sum, permanent use, but no updates and cloud services. 2. Subscription service: $20.99 per month or $239.88 per year, and the latest version and cloud services are available. 3. Enterprise plan: $33.99 per user per month, including team management and additional cloud storage. 4. Educational Offer: Students and teachers are $19.99 per month, including multiple CreativeCloud applications.

The method to create a new layer in Photoshop is: 1. Click the "New Layer" button at the bottom of the layer panel; 2. Use the shortcut keys Ctrl Shift N (Windows) or Command Shift N (Mac). The layers are like transparent sheets on canvas, allowing design elements to be managed separately, non-destructive editing and experimenting, and improving design levels.

Photoshop is widely used in the fields of image processing and digital art, and is suitable for photo editing and digital art creation. 1. Photo editing: Adjust brightness and contrast Use the "Brightness/Contrast" tool. 2. Digital art: Use brush tools to create paintings. 3. Basic usage: Use the "Red Eye Tool" to remove red eyes. 4. Advanced usage: Use layers and masks for image synthesis. 5. Debug: Recover the lost layers by checking the layer panel. 6. Performance optimization: Adjust memory usage to improve running speed.

Photoshop's core functions are image editing and operation, including adjusting the color, brightness, contrast of images, applying filter effects, cropping and adjusting image size, performing image synthesis, etc. 1. Adjust brightness and contrast: Open the image, select the "Adjust" option in the "Image" menu, select "Brightness/Contrast", and adjust the slider. 2. Use the color level adjustment layer and layer mask: Click the "Create a new fill or adjust layer" button, select "Scale", adjust the color level, add a layer mask, and use the brush tool to control the adjustment effect.

Photoshop is a powerful tool for handling raster graphics, and its core functions include layers and masks, filters and adjustments. 1. Layers and masks allow independent editing and non-destructive modifications. 2. Filters and adjustments can quickly change the appearance of the image, but they should be used with caution to avoid affecting the image quality. By mastering these functions and advanced skills, you can greatly improve your image editing and creative abilities.

Photoshop is so powerful in the field of image processing because of its versatility and intuitive operating interface. 1) It can handle various tasks from basic adjustment to complex synthesis, such as adjusting brightness and contrast. 2) Working based on layers and masks allows non-destructive editing. 3) Examples of usage include adjusting color balance and creating layer masks. 4) Common errors such as excessive editing can be avoided through the History panel. 5) Performance optimization suggestions include the use of smart objects and shortcut keys.

Photoshop offers a free 7-day trial period. To maximize the use of the trial period, 1) sign up for multiple Adobe accounts, 2) use the student or education version, and 3) subscribe to Adobe CreativeCloud. Free alternatives include: 1) GIMP, 2) Photopea, 3) Krita, these software can meet daily image editing needs.


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