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                #### **簡介** `clip-path`CSS 屬性可以創建一個只有元素的部分區域可以顯示的剪切區域。區域內的部分顯示,區域外的隱藏。剪切區域是被引用內嵌的URL定義的路徑或者外部svg的路徑,或者作為一個形狀。clip-path屬性代替了現在已經棄用的剪切`clip`屬性。 #### **基本圖形** `inset()`: 定義一個矩形 。注意,定義矩形不是`rect`,而是**`inset`**。 `circle()`: 定義一個圓 。 `ellipse()`: 定義一個橢圓 。 `polygon()` : 定義一個多邊形 。 #### **使用介紹** ### **使用inset():** //語法 inset( <length-percentage>{1,4} [ round <border-radius> ]? ) //說明 inset()可以傳入5個參數,分別對應top,right,bottom,left的裁剪位置,round radius(可選,圓角) //示例 clip-path: inset(2em 3em 2em 1em round 2em); ### **使用circle** //語法 circle( [ <shape-radius> ]? [ at <position> ]? ) //說明 circle()可以傳人2個可選參數; 1. 圓的半徑,默認元素寬高中短的那個為直徑,支持百分比 2. 圓心位置,默認為元素中心點 //示例 clip-path: circle(30% at 150px 120px); ### **使用ellipse** //語法 ellipse( [ <shape-radius>{2} ]? [ at <position> ]? ) //說明 ellipse()可以傳人3個可選參數; 1. 橢圓的X軸半徑,默認是寬度的一半,支持百分比 2. 橢圓的Y軸半徑,默認是高度的一半,支持百分比 3. 橢圓中心位置,默認是元素的中心點 //示例 clip-path: ellipse(45% 30% at 50% 50%); ### **使用polygon** //語法 polygon( <fill-rule>? , [ <length-percentage> <length-percentage> ]# ) //說明 <fill-rule>可選,表示填充規則用來確定該多邊形的內部。可能的值有nonzero和evenodd,默認值是nonzero 后面的每對參數表示多邊形的頂點坐標(X,Y),也就是連接點 //示例 clip-path: polygon(50% 0,100% 50%,0 100%); ## **使用示例** ### **圓形裁剪** ``` <style> .outer{ width:100px; height: 100px; background:orange; -webkit-clip-path: circle(50% at 50% 50%) } </style> <div class="outer"></div> ``` ### **橢圓裁剪** ``` <style> .outer{ width:100px; height: 100px; background:orange; -webkit-clip-path: ellipse(25% 40% at 50% 50%); } </style> <div class="outer"></div> ``` ### **矩形裁剪** ``` <style> .outer{ width:100px; height: 100px; background:orange; -webkit-clip-path: inset(5% 20% 15% 10%); } </style> <div class="outer"></div> ``` ### **多邊形裁剪** #### **三角形** -webkit-clip-path: polygon(50% 0%, 0% 100%, 100% 100%); #### **菱形** -webkit-clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%); #### **梯形** -webkit-clip-path: polygon(20% 0%, 80% 0%, 100% 100%, 0% 100%); #### **平行四邊形** -webkit-clip-path: polygon(25% 0%, 100% 0%, 75% 100%, 0% 100%); #### **五邊形** -webkit-clip-path: polygon(50% 0%, 100% 38%, 82% 100%, 18% 100%, 0% 38%); #### **六邊形** -webkit-clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%); #### **七邊形** -webkit-clip-path: polygon(50% 0%, 90% 20%, 100% 60%, 75% 100%, 25% 100%, 0% 60%, 10% 20%); ![](https://img.kancloud.cn/2e/bf/2ebfff4ee04a14447fe8188b20bb1fa6_168x153.png) #### **八邊形** -webkit-clip-path: polygon(30% 0%, 70% 0%, 100% 30%, 100% 70%, 70% 100%, 30% 100%, 0% 70%, 0% 30%); ![](https://img.kancloud.cn/8c/b5/8cb53af93845e64ede84aefed3adf275_161x133.png) ### **特殊圖形裁剪** #### **斜角** -webkit-clip-path: polygon(20% 0%, 80% 0%, 100% 20%, 100% 80%, 80% 100%, 20% 100%, 0% 80%, 0% 20%); ![](https://img.kancloud.cn/12/fd/12fd577e9d14e93cae7f29f0c74db31d_204x144.png) #### **槽口** -webkit-clip-path: polygon(0% 15%, 15% 15%, 15% 0%, 85% 0%, 85% 15%, 100% 15%, 100% 85%, 85% 85%, 85% 100%, 15% 100%, 15% 85%, 0% 85%); ![](https://img.kancloud.cn/88/78/8878f551e9beaffa88b902463bdf3375_176x143.png) #### **左箭頭** -webkit-clip-path: polygon(40% 0%, 40% 20%, 100% 20%, 100% 80%, 40% 80%, 40% 100%, 0% 50%); ![](https://img.kancloud.cn/a0/2a/a02a3e1de05fd9b35ac872f5c6cb80f8_159x135.png) #### **右箭頭** -webkit-clip-path: polygon(0% 20%, 60% 20%, 60% 0%, 100% 50%, 60% 100%, 60% 80%, 0% 80%); #### **星星** -webkit-clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%); #### **十字架** -webkit-clip-path: polygon(10% 25%, 35% 25%, 35% 0%, 65% 0%, 65% 25%, 90% 25%, 90% 50%, 65% 50%, 65% 100%, 35% 100%, 35% 50%, 10% 50%); ![](https://img.kancloud.cn/9d/93/9d93207e32a8270d60d542a0bfabe1a9_150x156.png) #### **叉號** -webkit-clip-path: polygon(20% 0%, 0% 20%, 30% 50%, 0% 80%, 20% 100%, 50% 70%, 80% 100%, 100% 80%, 70% 50%, 100% 20%, 80% 0%, 50% 30%); ![](https://img.kancloud.cn/98/6c/986c2e1670b1d04a63375b3effdad4d0_198x148.png) #### **對話框** -webkit-clip-path: polygon(0% 0%, 100% 0%, 100% 75%, 75% 75%, 75% 100%, 50% 75%, 0% 75%); ![](https://img.kancloud.cn/6e/62/6e624bceea2043abf775713f339ce698_133x108.png) #### **變形** clip-path屬性支持transition,但前提是相同的裁剪函數,及相同的參數個數 下面是一個切角效果向正方形的變形過程 ``` .outer{ width:100px; height: 100px; background:orange; clip-path: polygon(20% 0%, 80% 0%, 100% 20%, 100% 80%, 80% 100%, 20% 100%, 0% 80%, 0% 20%); transition:.5s clip-path; } .outer:hover{ clip-path:polygon(0 0,0 0,100% 0,100% 0,100% 100%,100% 100%,0 100%,0 100%); } <div class="outer"></div> ```
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