Javascript HTML5 Canvas ctx.fill（）在笔划区域外填充

我在虚拟天空图书馆工作。图书馆试图展示天空的视觉表现。该库构建在html画布上。在原始代码中，银河系是用

ctx.stroke（）。我尝试添加
ctx.fill（）
来填充银河系区域，但对于某些坐标/日期，画布填充在笔划区域之外。我添加了两个代表问题的图像。在填充版本中，请注意，它还填充了银河系之外的其他区域。我在这个问题上花了很多时间，但不明白为什么画布会在绘制区域之外填充

不带ctx.fill（）


使用ctx.fill（）


下面是绘制银河线的代码：
正如已经说过的，这可能来自您的数据。
一种容易检查其完整性的方法是在每个点位置绘制一个小矩形

这样可以避免检查每个数字。
编写了一个小脚本来查找坐标中的任何跳跃。输出：

Diff found at 342 with newX:   4.3035 and newY: 46.2481 and oldX:359.592 and oldY: 46.1929
Diff found at 624 with newX: 355.2714 and newY: 64.426  and oldX: 0.2476 and oldY: 66.2511

因此，您需要将360添加到342和624之间的所有x值。
您可以在此处看到它的演示：


不幸的是，我不知道这是否真的解决了你的问题，因为我不知道你的绘图代码。您应该更新它，以便将来能够使用循环坐标

如果您是懒惰的，并且添加它是有效的，那么下面是修复的第一行（带有js舍入错误）：


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Diff found at 342 with newX:   4.3035 and newY: 46.2481 and oldX:359.592 and oldY: 46.1929
Diff found at 624 with newX: 355.2714 and newY: 64.426  and oldX: 0.2476 and oldY: 66.2511

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