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                            ## Canvas繪制曲線
### 圓弧繪制
~~~
ctx.arc(100,100,50,0,Math.PI / 2, true);
ctx.stroke();
~~~
### 二次樣條曲線繪制

~~~
ctx.moveTo(91,332);
ctx.quadraticCurveTo(287,142,401,357);
ctx.stroke();
~~~

### 貝塞爾曲線繪制

~~~
ctx.moveTo(175,375);
ctx.quadraticCurveTo(297,182,468,252,517,380);
ctx.stroke();
~~~



                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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