我尝试做的事情:将SVG路径转换为(x,y)点数组。
我现在有这个:
public Point[] strokeToPoints(Node n){
SVGOMPathElement path = (SVGOMPathElement) n;
System.out.println(path.getAttribute("d"));
System.out.println(path.getTotalLength());
return null;
}
节点n始终是从SVG文件中提取的路径元素,如下所示:
<path id="kvg:098df-s1" kvg:type="㇒" d="M52.75,10.5c0.11,0.98-0.19,2.67-0.97,3.93C45,25.34,31.75,41.19,14,51.5"/>
该行
System.out.println(path.getAttribute("d"));
返回
M52.75,10.5c0.11,0.98-0.19,2.67-0.97,3.93C45,25.34,31.75,41.19,14,51.5
哪个好,但行
System.out.println(path.getTotalLength());
返回
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
at org.apache.batik.dom.svg.SVGPathSupport.getTotalLength(SVGPathSupport.java:41)
at org.apache.batik.dom.svg.SVGOMPathElement.getTotalLength(SVGOMPathElement.java:131)
导致此错误的原因是什么?我需要总长度,所以我可以遍历它将点收集到一个数组。
答案 0 :(得分:0)
看起来应该是这样的:
PathLength pathLenObj = new PathLength((Shape) n);
float length = pathLenObj.pathLength;