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# PretransformVertices: fix crash during scene destruction if the resulting scene is empty 

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@960 67173fc5-114c-0410-ac8e-9d2fd5bffc1f
pull/1/head
aramis_acg 2011-04-22 15:55:34 +00:00
parent 5576b31aa6
commit 2ecbf3f244
1 changed files with 26 additions and 25 deletions
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51
code/PretransformVertices.cpp
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@ -537,40 +537,41 @@ void PretransformVertices::Execute( aiScene* pScene)
}
}
// now delete all meshes in the scene and build a new mesh list
for (unsigned int i = 0; i < pScene->mNumMeshes;++i)
{
aiMesh* mesh = pScene->mMeshes[i];
mesh->mNumBones = 0;
mesh->mBones = NULL;
// we're reusing the face index arrays. avoid destruction
for (unsigned int a = 0; a < mesh->mNumFaces; ++a) {
mesh->mFaces[a].mNumIndices = 0;
mesh->mFaces[a].mIndices = NULL;
}
delete mesh;
// Invalidate the contents of the old mesh array. We will most
// likely have less output meshes now, so the last entries of
// the mesh array are not overridden. We set them to NULL to
// make sure the developer gets notified when his application
// attempts to access these fields ...
mesh = NULL;
}
// If no meshes are referenced in the node graph it is possible that we get no output meshes.
if (apcOutMeshes.empty()) {
throw DeadlyImportError("No output meshes: all meshes are orphaned and are not referenced by nodes");
throw DeadlyImportError("No output meshes: all meshes are orphaned and are not referenced by any nodes");
}
else
{
// now delete all meshes in the scene and build a new mesh list
for (unsigned int i = 0; i < pScene->mNumMeshes;++i)
{
aiMesh* mesh = pScene->mMeshes[i];
mesh->mNumBones = 0;
mesh->mBones = NULL;
// we're reusing the face index arrays. avoid destruction
for (unsigned int a = 0; a < mesh->mNumFaces; ++a) {
mesh->mFaces[a].mNumIndices = 0;
mesh->mFaces[a].mIndices = NULL;
}
delete mesh;
// Invalidate the contents of the old mesh array. We will most
// likely have less output meshes now, so the last entries of
// the mesh array are not overridden. We set them to NULL to
// make sure the developer gets notified when his application
// attempts to access these fields ...
mesh = NULL;
}
// It is impossible that we have more output meshes than
// input meshes, so we can easily reuse the old mesh array
pScene->mNumMeshes = (unsigned int)apcOutMeshes.size();
for (unsigned int i = 0; i < pScene->mNumMeshes;++i)
for (unsigned int i = 0; i < pScene->mNumMeshes;++i) {
pScene->mMeshes[i] = apcOutMeshes[i];
}
}
}