创建指向 MFnMesh 的指针

Create a pointer to a MFnMesh

我正在尝试创建 接收 MFnMesh 指针 并对其执行操作的函数。

问题是我无法将我的MFnMesh转换为指针,我认为问题不仅在于此class,还在于MFnBaseClass 因为我得到这个错误。

/usr/autodesk/maya2015-x64/include/maya/MFnBase.h:168:14: error: ‘MFnMesh* MFnMesh::operator&() const’ is private
   MFnClass * operator& () const
              ^
/usr/autodesk/maya2015-x64/include/maya/MFnDagNode.h:237:2: note: in expansion of macro ‘declareMinimalMFn’
  declareMinimalMFn( MFnClass );          \
  ^
/usr/autodesk/maya2015-x64/include/maya/MFnMesh.h:243:2: note: in expansion of macro ‘declareDagMFn’
  declareDagMFn(MFnMesh, MFnDagNode);
  ^
/home/k.masson/Documents/maya/km_extendedColorSet/src/km_particlesToColorSet.cpp:159:9: error: within this context
   test(&meshFn);
         ^

这是 somefile.h 中的函数测试,包含在调用该函数的文件中。

void test(MFnMesh * meshFn){
  MStatus status = MS::kSuccess;
  MString csName("YOLOSWAQDAZD");
  status = meshFn->createColorSetDataMesh(csName);
  MCheckStatus(status,"Error creating new color set");
}

这是我在调用 test 函数之前所做的。

// Get the out mesh data
        MDataHandle outMeshHandle = data.outputValue(aOutGeometry, &status);
        MCheckStatus(status,"ERROR getting aOutGeometry");

        // Copy the in mesh to the output
        outMeshHandle.copy(inMeshData);

        // Create a function set for the out mesh
        MFnMesh meshFn(outMeshHandle.asMesh());
        test(&meshFn);

我没有找到任何方法将我的 MFnMesh 转换为指针,所以我尝试直接将其作为对象而不是像这样的指针调用。

test(meshFn);

void test(MFnMesh meshFn){
  MStatus status = MS::kSuccess;
  MString csName("YOLOSWAQDAZD");
  status = meshFn.createColorSetDataMesh(csName);
  MCheckStatus(status,"Error creating new color set");
}

我明白了:

/usr/autodesk/maya2015-x64/include/maya/MFnMesh.h:243:16: error: ‘MFnMesh::MFnMesh(const MFnMesh&)’ is private
  declareDagMFn(MFnMesh, MFnDagNode);
                ^
/usr/autodesk/maya2015-x64/include/maya/MFnBase.h:166:9: note: in definition of macro ‘declareMinimalMFn’
         MFnClass( const MFnClass &rhs );                            \
         ^
/usr/autodesk/maya2015-x64/include/maya/MFnMesh.h:243:2: note: in expansion of macro ‘declareDagMFn’
  declareDagMFn(MFnMesh, MFnDagNode);
  ^
/home/k.masson/Documents/maya/km_extendedColorSet/src/km_particlesToColorSet.cpp:159:14: error: within this context
   test(meshFn);
              ^
In file included from /home/k.masson/Documents/maya/km_extendedColorSet/src/km_particlesToColorSet.cpp:29:0:
/home/k.masson/Documents/maya/km_extendedColorSet/src/kmColorSetTool.h:29:6: error:   initializing argument 1 of ‘void test(MFnMesh)’
 void test(MFnMesh meshFn){

所以你知道是否有办法创建一个函数以时尚的方式MFnBase class,甚至 =45=] 具有 MFnBase 属性?我不知道我们不能做这种真正最新的过程..

我是 c++ 的新手,所以我可能犯了一个愚蠢的错误。

MFnBaseClass 不允许使用到指针的转换,相反,使用几乎相同的引用。有关详细信息,请参阅 References vs. Pointers

我函数的正确签名

void test(MFnMesh& meshFn)

而使用方法是

test(meshFn);

并且要在函数中使用引用,只需将其用作常规对象即可

void test(MFnMesh& meshFn){
  MStatus status = MS::kSuccess;
  MString csName("YOLOSWAQDAZD");
  status = meshFn.createColorSetDataMesh(csName);
  MCheckStatus(status,"Error creating new color set");
}