private void CreateMeshMaskByImage()
{
#if UNITY_EDITOR
GameObject o = Selection.activeGameObject;
if (o != null && o.GetComponent <Image>() != null)
{
Image img = o.GetComponent <Image>();
string path = AssetDatabase.GetAssetPath(img.mainTexture);
if (!string.IsNullOrEmpty(path))
{
TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;
TextureImporterSettings cacheSettings = new TextureImporterSettings();
textureImporter.ReadTextureSettings(cacheSettings);
//将Texture临时设置为可读写
TextureImporterSettings tmp = new TextureImporterSettings();
textureImporter.ReadTextureSettings(tmp);
tmp.readable = true;
textureImporter.SetTextureSettings(tmp);
AssetDatabase.ImportAsset(path);
SobelEdgeDetection sobel = new SobelEdgeDetection();
Texture2D targetT2d = sobel.Detect(img.mainTexture as Texture2D);
List <Vector2> vertices = EdgeUtil.GetPoints(targetT2d);
for (int i = 0; i < vertices.Count; i++)
{
Vector3 vec = vertices[i];
vec.x -= targetT2d.width * 0.5f;
vec.y -= targetT2d.height * 0.5f;
vertices[i] = vec;
}
//恢复Texture设置
textureImporter.SetTextureSettings(cacheSettings);
AssetDatabase.ImportAsset(path);
MeshMask mm = o.GetComponent <MeshMask>();
PolygonCollider2D polygon2d = o.GetComponent <PolygonCollider2D>();
if (mm == null)
{
mm = o.AddComponent <MeshMask>();
}
if (polygon2d == null)
{
polygon2d = o.AddComponent <PolygonCollider2D>();
}
vertices = vertices.Select(p =>
{
return(new Vector2(p.x / img.mainTexture.width * image.rectTransform.rect.width, p.y / img.mainTexture.height * image.rectTransform.rect.height));
}).ToList();
polygon2d.SetPath(0, vertices.ToArray());
mm.vertices = polygon2d.GetPath(0).ToList();
if (mm.vertices[0] == mm.vertices[vertices.Count - 1])
{
mm.vertices.RemoveAt(mm.vertices.Count - 1);
}
Stopwatch sw = new Stopwatch();
sw.Start();
Triangulator tr = new Triangulator(mm.vertices.ToArray());
mm.triangles = tr.Triangulate().ToList();
sw.Stop();
Debug.Log("三角化耗时:" + sw.ElapsedMilliseconds + "ms");
AssetDatabase.Refresh();
}
else
{
Debug.LogError("Image组件还没设置图片");
}
}
else
{
Debug.LogError("选中物体没有Image组件，请添加");
}
#endif
}
public override void OnInspectorGUI()
{
base.OnInspectorGUI();
dirty = false;
rect = m_Img.rectTransform.rect;
EditorGUILayout.PropertyField(m_keepOriginSize, true);
curSize = m_Img.path.Count;
showPath = EditorGUILayout.Foldout(showPath, "Path");
if (showPath)
{
EditorGUI.BeginChangeCheck();
EditorGUILayout.BeginHorizontal();
EditorGUI.indentLevel = 1;
EditorGUILayout.LabelField("size", GUILayout.MaxWidth(200));
int newSize = EditorGUILayout.IntField(curSize);
if (EditorGUI.EndChangeCheck())
{
OnChange();
if (newSize < 0)
{
newSize = 0;
}
if (newSize < curSize)
{
m_Img.path.RemoveRange(newSize, curSize - newSize);
}
else if (newSize > curSize)
{
if (newSize > m_Img.path.Capacity)
{
m_Img.path.Capacity = newSize;
}
m_Img.path.AddRange(Enumerable.Repeat(new RectPoint(), newSize - curSize));
}
}
EditorGUILayout.EndHorizontal();
curSize = m_Img.path.Count;
float f = EditorGUIUtility.labelWidth;
EditorGUIUtility.labelWidth = 30;
for (int i = 0; i < curSize; i++)
{
RectPointField(i, m_Img.path[i]);
}
EditorGUIUtility.labelWidth = f;
}
//EditorGUI.EndProperty();
EditorGUI.indentLevel = 0;
m_Img.doPolygonUpdate = true;
//EditorGUILayout.PropertyField(m_edgeTex, true);
Texture2D tex = EditorGUILayout.ObjectField("EdgeTexture", texMull, typeof(Texture2D), true) as Texture2D;
if (tex != null)
{
string path = AssetDatabase.GetAssetPath(tex.GetInstanceID());
TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;
TextureImporterSettings cacheSettings = new TextureImporterSettings();
textureImporter.ReadTextureSettings(cacheSettings);
TextureImporterSettings tmp = new TextureImporterSettings();
textureImporter.ReadTextureSettings(tmp);
tmp.readable = true;
textureImporter.SetTextureSettings(tmp);
AssetDatabase.ImportAsset(path);
SobelEdgeDetection sobel = new SobelEdgeDetection();
var targetT2d = sobel.Detect(tex);
//Rect rect = rectTransform.rect;
m_Img.path = EdgeUtil.GetPoints(targetT2d, tex.width, tex.height).Select(v =>
{
return(new RectPoint(v.x - tex.width * 0.5f, v.y - tex.height * 0.5f));
}).ToList();
textureImporter.SetTextureSettings(cacheSettings);
AssetDatabase.ImportAsset(path);
AssetDatabase.Refresh();
Debug.Log("Edge Detect Done");
dirty = true;
}
this.serializedObject.ApplyModifiedProperties();
if (dirty)
{
EditorUtility.SetDirty(target);
}
}