paper.js点数学不起作用

Question

Even though the paper.js documentation states that it is possible to do implicit additions on points or assignements with [x,y] (first block of code, line 17), I can not get this to work. Any point resulting from math of the type point3 = point2 - point1 has undefined x and y properties, whereas they are well defined in the points after creation with new .

I have created this JSFiddle to reproduce the errors I am getting.

What have I missed in my code, please ?

Answer 1

The page you link to says:

PaperScript code is loaded just like any other JavaScript using the <script> tag, except for the type being set to "text/paperscript" or "text/x-paperscript" . The code can either be an external file ( src="URL" ), or inlined:

Once you put your code in a <script type="text/paperscript"> tag, it works:

jsfiddle.net/2F2jx/6

Edit: To use a linked script, it's no different. You set the type attribute:

<script type="text/paperscript" src="myscript.js"></script>

Answer 2

链接上的PaperJS为v0.22，最新版本为v0.9.12，因此，如果您使用在线参考http://paperjs.org/reference/，则您的代码适用于0.22版本。