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added per mesh attribute example to the trimesh_attribute sample

This commit is contained in:
Paolo Cignoni 2012-10-13 21:35:42 +00:00
parent 3778d69fd4
commit 6760de8bdd
1 changed files with 36 additions and 31 deletions
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67
apps/sample/trimesh_attribute/trimesh_attribute.cpp
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@ -31,61 +31,66 @@ Attributes are a simple mechanism to associate user-defined 'attributes' to the
*/ */
#include<vcg/complex/complex.h> #include<vcg/complex/complex.h>
using namespace vcg;
class MyEdge; class MyEdge;
class MyFace; class MyFace;
class MyVertex; class MyVertex;
struct MyUsedTypes : public vcg::UsedTypes< vcg::Use<MyVertex> ::AsVertexType, struct MyUsedTypes : public UsedTypes< Use<MyVertex> ::AsVertexType,
vcg::Use<MyFace> ::AsFaceType>{}; Use<MyFace> ::AsFaceType>{};
class MyVertex : public vcg::Vertex< MyUsedTypes, vcg::vertex::Coord3f,vcg::vertex::Normal3f>{}; class MyVertex : public Vertex< MyUsedTypes, vertex::Coord3f,vertex::Normal3f>{};
class MyFace : public vcg::Face< MyUsedTypes, vcg::face::VertexRef, vcg::face::Normal3f> {}; class MyFace : public Face< MyUsedTypes, face::VertexRef, face::Normal3f> {};
class MyMesh : public vcg::tri::TriMesh< std::vector<MyVertex>, std::vector<MyFace> > {}; class MyMesh : public tri::TriMesh< std::vector<MyVertex>, std::vector<MyFace> > {};
int main() int main()
{ {
MyMesh m; MyMesh m;
//...here m is filled
// add a per-vertex attribute with type float named "Irradiance" // add a per-vertex attribute with type float named "Irradiance"
MyMesh::PerVertexAttributeHandle<float> ih = vcg::tri::Allocator<MyMesh>::AddPerVertexAttribute<float> (m,std::string("Irradiance")); MyMesh::PerVertexAttributeHandle<float> named_hv = tri::Allocator<MyMesh>::AddPerVertexAttribute<float> (m,std::string("Irradiance"));
// add a per-vertex attribute with type float named "Radiosity" // add a per-vertex attribute with type float named "Radiosity"
vcg::tri::Allocator<MyMesh>::AddPerVertexAttribute<float> (m,std::string("Radiosity")); tri::Allocator<MyMesh>::AddPerVertexAttribute<float> (m,std::string("Radiosity"));
// add a per-vertex attribute with type bool and no name specified // add a per-vertex attribute with type bool and no name specified
MyMesh::PerVertexAttributeHandle<bool> blocked_h = vcg::tri::Allocator<MyMesh>::AddPerVertexAttribute<bool> (m); MyMesh::PerVertexAttributeHandle<bool> anon_hv = tri::Allocator<MyMesh>::AddPerVertexAttribute<bool> (m);
// add a per-face attribute with type bool and no name specified // add a per-face attribute with type bool and no name specified
MyMesh::PerFaceAttributeHandle<bool> blocked_hf = vcg::tri::Allocator<MyMesh>::AddPerFaceAttribute<bool> (m); MyMesh::PerFaceAttributeHandle<bool> anon_hf = tri::Allocator<MyMesh>::AddPerFaceAttribute<bool> (m);
MyMesh::VertexIterator vi; int i = 0; MyMesh::VertexIterator vi; int i = 0;
for(vi = m.vert.begin(); vi != m.vert.end(); ++vi,++i){ for(vi = m.vert.begin(); vi != m.vert.end(); ++vi,++i){
ih[vi] = 1.0f; // [] operator takes a iterator named_hv[vi] = 1.0f; // [] operator takes a iterator
ih[*vi] = 1.0f; // or a MyMesh::VertexType object named_hv[*vi] = 1.0f; // or a MyMesh::VertexType object
ih[&*vi]= 1.0f; // or a pointer to it named_hv[&*vi]= 1.0f; // or a pointer to it
ih[i] = 1.0f; // or an integer index named_hv[i] = 1.0f; // or an integer index
} }
// you can query if an attribute is present or not // you can query if an attribute is present or not
bool hasRadiosity = vcg::tri::HasPerVertexAttribute(m,"Radiosity"); bool hasRadiosity = tri::HasPerVertexAttribute(m,"Radiosity");
// Once created with AddPerVertexAttribute, an handle to the attribute can be obtained as follows // Once created with AddPerVertexAttribute, an handle to the attribute can be obtained as follows
MyMesh::PerVertexAttributeHandle<float> rh = vcg::tri::Allocator<MyMesh>::GetPerVertexAttribute<float>(m,"Radiosity"); MyMesh::PerVertexAttributeHandle<float> ret_hv = tri::Allocator<MyMesh>::GetPerVertexAttribute<float>(m,"Radiosity");
// you can delete an attibute by name // you can also have PerMesh attributes
vcg::tri::Allocator<MyMesh>::DeletePerVertexAttribute(m,"Radiosity"); MyMesh::PerMeshAttributeHandle<int> hm = tri::Allocator<MyMesh>::AddPerMeshAttribute<int> (m,std::string("ADummyIntegerAttribute"));
// you can delete an attibute by handle // PerMesh attributes are accessed directly using the handle itself
vcg::tri::Allocator<MyMesh>::DeletePerVertexAttribute(m,blocked_h); hm() = 10;
bool res ; // you can delete an attribute by name
res = vcg::tri::Allocator<MyMesh>::IsValidHandle(m,ih);printf("%d\n",res); tri::Allocator<MyMesh>::DeletePerVertexAttribute(m,"Radiosity");
res = vcg::tri::Allocator<MyMesh>::IsValidHandle(m,blocked_hf);printf("%d\n",res);
vcg::tri::Allocator<MyMesh>::DeletePerVertexAttribute(m,ih); // you can delete an attribute by handle
vcg::tri::Allocator<MyMesh>::DeletePerFaceAttribute(m,blocked_hf); tri::Allocator<MyMesh>::DeletePerVertexAttribute(m,anon_hv);
res = vcg::tri::Allocator<MyMesh>::IsValidHandle(m,ih);printf("%d\n",res);
res = vcg::tri::Allocator<MyMesh>::IsValidHandle(m,blocked_hf);printf("%d\n",res); bool res;
res = tri::Allocator<MyMesh>::IsValidHandle(m,named_hv); printf("Is Valid: %s\n",res?"Yes":"No");
res = tri::Allocator<MyMesh>::IsValidHandle(m,anon_hf); printf("Is Valid: %s\n",res?"Yes":"No");
res = tri::Allocator<MyMesh>::IsValidHandle(m,hm); printf("Is Valid: %s\n",res?"Yes":"No");
tri::Allocator<MyMesh>::DeletePerVertexAttribute(m,ret_hv);
tri::Allocator<MyMesh>::DeletePerFaceAttribute(m,anon_hf);
res = tri::Allocator<MyMesh>::IsValidHandle(m,named_hv); printf("Is Valid: %s\n",res?"Yes":"No");
res = tri::Allocator<MyMesh>::IsValidHandle(m,anon_hf); printf("Is Valid: %s\n",res?"Yes":"No");
res = tri::Allocator<MyMesh>::IsValidHandle(m,hm); printf("Is Valid: %s\n",res?"Yes":"No");
} }