关于网格绘制有可能引起“无法计算权重”的问题

krammor

今天出现了一个情况，莫名其妙得对某个网格无法进行权重计算
经过细致的检查发现了是由于网格绘制点重复引起的权重无法计算

问题出现的地方在这：

它看起来很正常，似乎看不出来什么问题，但只有你放得很大再次检查的时候你才会发现点出现交叉了：

我希望在往后的版本中能优化一下网格绘制，在计算的过程中自动删除过近的顶点，不然在放到最大的情况下对一个描边较多的网格检查每一个顶点是否重复是一件相当费劲的事情

Misaki

krammor I agree with you that such cases should be fixed automatically, as it is difficult to see the cause at first glance. By the way, is the vertex overlap a result of setting the mesh vertices through the trace? If so, could you also tell us what values you had set for each property of the trace, if you still have the settings from that time?

krammor

Misaki 是的，这是自动绘制得出的结果
如果我记得没错的话，当时的设置应该是“细节”和“精细度”为50，“凹度”为100，当你将“精细度”或“凹度”调的比较高的时候，一些区域的点有可能过密，进而导致这种情况

Misaki

krammor Thank you for sharing your settings! In fact, I ran the trace with that settings on the Spineboy's gun attachment and was able to reproduce similar results immediately, so this is something to improve on in the future. I have created an issue for improvement here: EsotericSoftware/spine-editor865
You can subscribe to this issue ticket to receive notifications when there is any progress on this issue.

Nate

Can you say what version of Spine you are using?

krammor

Nate 我近期都是使用最新版的，应该是4.2.38

krammor

Nate 由于每次自动绘制的结果都不同，这个问题是概率发生的。就我感觉而言，这种情况发生的概率大概在五分之一左右，而且通常是凹度或者精致度调的越高，则发生的概率就越高，但也与自动描绘的图片有关，棱角越凸则发生的概率可能会更大。
（顺带一提，只需要拖拽相关数值的参数UI条，就可以重新计算结果）

这是几次自动描绘得出的结果，可以看到结果不相同，但是总有个别几次会出现点过近的问题：

除此之外，也有精致度调整过高导致的可能的问题：

以及这种：
这是一个自动描绘计算中的截图，你已经能看到它的点超出边界框了：

然后它的最终计算结果是这样的：

Misaki

krammor Thank you for the additional information you provided! I have tried several times to reproduce the problem based on your information, but unfortunately I have not been able to reproduce it. So if you don't mind, could you please email us a screenshot of the problem on your end that you were able to reproduce about 1 out of 5 times?: contact@esotericsoftware.com
The shape of the image is most important to us, so you can send us the image filled in one color if you like. We would appreciate it if you could include the URL of this thread in the body of your email so that we can see the context.

krammor

Misaki Misaki 用作示例的并不是我的项目文件，而是别人视频分享出来的练习文件，用作自动描绘的示例图片也是随便在这个源文件中选的，希望能对你有所帮助。
<Removed>

Misaki

krammor I have confirmed that I can indeed reproduce the problem, but I have known about this Spine project for some time, and from what I remember and from my searches, this Spine project should be sold for a fee. I thought it would be problematic to publish it here for free, so I have removed the link.

Anyway, I have confirmed that I can reproduce the problem with it more easily than with Spineboy. I thought that this problem might be more likely to occur with images with blurred borders, so I will see if I can create an image that can easily reproduce this problem.

Misaki

I was able to reproduce the problem once I prepared an image with blurred borders and tested tracing with it.

I will update issue ticket content.