从物理体编辑器中获取一个多边形

Question

简短版本：

如何从Physics Body编辑器中获取基本的< code > com . badlogic . math . gdx . polygon ？

长版本:

我已经为LibGDX实现了加载器，但是加载器通过它的内部 RigidBody 类使用它自己的内部多边形模型类。但这似乎并不是很“微不足道”。我想到的东西看起来像这样：

        List<Polygon> myPolygons = new ArrayList<Polygon>();    
        Map<String, BodyEditorLoader.RigidBodyModel> bodyMap = loader.getInternalModel().rigidBodies;    
        for (BodyEditorLoader.RigidBodyModel m : bodyMap.values())
        {
            for (BodyEditorLoader.PolygonModel pm : m.polygons)
            {
                float[] vertArray = new float[pm.vertices.size() * 2];
                int count = 0;
                for (Vector2 v2 : pm.vertices)
                {
                    vertArray[count] = v2.x;
                    vertArray[count + 1] = v2.y;
                    count += 2;
                }
                myPolygons.add(new Polygon(vertArray));
            }
        }

这是相当麻烦的，我有这个完整的加载器，只是为了剥离它构建的所有内容，直到索引，并从中构建我自己的多边形。然而，编辑器确实为我提供了一个json，但不幸的是，它是一行，因此json的好处被浪费了。如果我可以手动修复布局并破译需要解析的内容，但我想知道我是否没有在这里重新发明轮子。

除此之外，可能只有一个非常简单的解决方案来得到我的多边形。

我要它做什么？我在为我的精灵寻找一些精确的碰撞检测。矩形和圆形都不行。多边形非常适合这种情况，它们有一个矩形用于廉价的检测，并且< code>Intersector可以处理两个多边形的冲突。我能想到的唯一有效创建这些多边形的方法是使用我链接的编辑器。

如果有人有更好的建议，我都洗耳恭听。

这是我当前的Json输出的样子。对我来说，它有冗余节点，但只有一行没有空格和行尾，解密很痛苦。

{"rigidBodies":[{"name":"terrain","imagePath":"groundGrass.png","origin":{"x":6.250441074371338E-4,"y":-6.705522537231445E-8},"polygons":[[{"x":0.375,"y":0.05569307133555412},{"x":0.3087501525878906,"y":0.0837499126791954},{"x":0.19375014305114746,"y":0.07812491804361343},{"x":0.16212871670722961,"y":0.0445544607937336}],[{"x":0.16212871670722961,"y":0.0445544607937336},{"x":0.5792078971862793,"y":0.034653469920158386},{"x":0.426980197429657,"y":0.05445544794201851},{"x":0.375,"y":0.05569307133555412}],[{"x":0.5792078971862793,"y":0.034653469920158386},{"x":0.5406249761581421,"y":0.07374989986419678},{"x":0.46039605140686035,"y":0.0717821791768074},{"x":0.426980197429657,"y":0.05445544794201851}],[{"x":0.05198019742965698,"y":0.035891093313694},{"x":0.0445544570684433,"y":0.04207921028137207},{"x":0.007425742689520121,"y":0.043316833674907684},{"x":0,"y":0.037128716707229614}],[{"x":0,"y":0.037128716707229614},{"x":8.940696716308594E-8,"y":6.249025464057922E-4},{"x":0.10891088843345642,"y":0.03217822313308716},{"x":0.05198019742965698,"y":0.035891093313694}],[{"x":8.940696716308594E-8,"y":6.249025464057922E-4},{"x":0.6596534848213196,"y":0.01980198174715042},{"x":0.6274752616882324,"y":0.03341584652662277},{"x":0.5792078971862793,"y":0.034653469920158386},{"x":0.16212871670722961,"y":0.0445544607937336},{"x":0.10891088843345642,"y":0.03217822313308716}],[{"x":8.940696716308594E-8,"y":6.249025464057922E-4},{"x":0.9987500905990601,"y":-6.250739097595215E-4},{"x":0.7093750238418579,"y":0.01874990016222},{"x":0.6596534848213196,"y":0.01980198174715042}],[{"x":0.9987500905990601,"y":-6.250739097595215E-4},{"x":0.9987500905990601,"y":0.04374990612268448},{"x":0.9418317079544067,"y":0.05816832184791565},{"x":0.7846534848213196,"y":0.05816832184791565},{"x":0.7400990128517151,"y":0.053217824548482895},{"x":0.7093750238418579,"y":0.01874990016222}],[{"x":0.9418317079544067,"y":0.05816832184791565},{"x":0.9212501049041748,"y":0.08749989420175552},{"x":0.8131188154220581,"y":0.08292079716920853},{"x":0.7846534848213196,"y":0.05816832184791565}]],"circles":[],"shapes":[{"type":"POLYGON","vertices":[{"x":0.9212501049041748,"y":0.08749989420175552},{"x":0.9418317079544067,"y":0.05816832184791565},{"x":0.9987500905990601,"y":0.04374990612268448},{"x":0.9987500905990601,"y":-6.250739097595215E-4},{"x":8.940696716308594E-8,"y":6.249025464057922E-4},{"x":0,"y":0.037128716707229614},{"x":0.007425742689520121,"y":0.043316833674907684},{"x":0.0445544570684433,"y":0.04207921028137207},{"x":0.05198019742965698,"y":0.035891093313694},{"x":0.10891088843345642,"y":0.03217822313308716},{"x":0.16212871670722961,"y":0.0445544607937336},{"x":0.19375014305114746,"y":0.07812491804361343},{"x":0.3087501525878906,"y":0.0837499126791954},{"x":0.375,"y":0.05569307133555412},{"x":0.426980197429657,"y":0.05445544794201851},{"x":0.46039605140686035,"y":0.0717821791768074},{"x":0.5406249761581421,"y":0.07374989986419678},{"x":0.5792078971862793,"y":0.034653469920158386},{"x":0.6274752616882324,"y":0.03341584652662277},{"x":0.6596534848213196,"y":0.01980198174715042},{"x":0.7093750238418579,"y":0.01874990016222},{"x":0.7400990128517151,"y":0.053217824548482895},{"x":0.7846534848213196,"y":0.05816832184791565},{"x":0.8131188154220581,"y":0.08292079716920853}]}]}],"dynamicObjects":[]}

Answer 1

我想部分回答我自己的问题。因为Json的输出不可读，所以我去了jsoneditoronline.org/，粘贴了一行Json。通过将代码复制到树编辑器，然后再复制回代码编辑器，我现在有了一个可读的Json版本。

它仍然有多余的节点在里面，一个工具，只是给我的原点和指数/顶点将是完美的。但是我可以继续使用这个伟大的工具来管理我的资产。