ISimpleMesh* CResourceFactory::createSimpleMesh(
const std::string& name,
u32 sortcode,
u32 vertexFormat,
void* vertices,
void* indices,
u32 vertexCount,
u32 vertexStride,
u32 indiceCount,
const math::SAxisAlignedBox& aabb,
bool bit32Index,
E_MEMORY_USAGE usage)
{
IMeshBuffer* buffer = createMeshBuffer(usage, vertices, indices, vertexCount, indiceCount, vertexStride, bit32Index);
if (!buffer)
{
GF_PRINT_CONSOLE_INFO("The mesh ('%s') create failed!. Due to the failure of mesh buffer.\n", name.c_str());
return nullptr;
}
CSimpleMesh* mesh = new CSimpleMesh(name, sortcode, aabb,
vertexFormat,
buffer);
if (!mesh)
{
GF_PRINT_CONSOLE_INFO("The mesh ('%s') create failed!. Due to the lack of memory.\n", name.c_str());
buffer->drop();
return nullptr;
}
return mesh;
}
//! reads a mesh sections and creates a mesh from it
IAnimatedMesh* CIrrMeshFileLoader::readMesh(io::IXMLReader* reader)
{
SAnimatedMesh* animatedmesh = new SAnimatedMesh();
SMesh* mesh = new SMesh();
animatedmesh->addMesh(mesh);
mesh->drop();
core::stringc bbSectionName = "boundingBox";
core::stringc bufferSectionName = "buffer";
core::stringc meshSectionName = "mesh";
if (!reader->isEmptyElement())
while(reader->read())
{
if (reader->getNodeType() == io::EXN_ELEMENT)
{
const wchar_t* nodeName = reader->getNodeName();
if (bbSectionName == nodeName)
{
// inside a bounding box, ignore it for now because
// we are calculating this anyway ourselves later.
}
else
if (bufferSectionName == nodeName)
{
// we've got a mesh buffer
IMeshBuffer* buffer = readMeshBuffer(reader);
if (buffer)
{
mesh->addMeshBuffer(buffer);
buffer->drop();
}
}
else
skipSection(reader, true); // unknown section
} // end if node type is element
else
if (reader->getNodeType() == io::EXN_ELEMENT_END)
{
if (meshSectionName == reader->getNodeName())
{
// end of mesh section reached, cancel out
break;
}
}
} // end while reader->read();
mesh->recalculateBoundingBox();
animatedmesh->recalculateBoundingBox();
return animatedmesh;
}
IModelMesh* CResourceFactory::createModelMesh(
const std::string& name,
u32 sortcode,
u32 vertexFormat,
void* vertices,
void* indices,
u32 vertexCount,
u32 vertexStride,
u32 indiceCount,
const math::SAxisAlignedBox& aabb,
bool bit32Index,
const std::vector<IModelMesh::SModelSubset>& subsets,
E_MEMORY_USAGE usage)
{
IMeshBuffer* buffer = createMeshBuffer(usage, vertices, indices, vertexCount, indiceCount, vertexStride, bit32Index);
if (!buffer)
{
GF_PRINT_CONSOLE_INFO("The mesh ('%s') create failed!. Due to the failure of mesh buffer.\n", name.c_str());
return nullptr;
}
if (subsets.size() < 1)
{
GF_PRINT_CONSOLE_INFO("FAIL:The mesh ('%s') create failed!. The subsets count must be greater than 1.\n", name.c_str());
return nullptr;
}
CModelMesh* mesh = new CModelMesh(name, sortcode, aabb, vertexFormat,
subsets, buffer);
if (!mesh)
{
GF_PRINT_CONSOLE_INFO("The mesh ('%s') create failed!. Due to the lack of memory.\n", name.c_str());
buffer->drop();
return nullptr;
}
return mesh;
}
IBillboardCollectionMesh* CResourceFactory::createBillboardCollectionMesh(
const std::string& name,
u32 sortcode,
const math::SAxisAlignedBox& aabb,
bool alterable,
u32 maxNum,
const std::vector<SBillboard>& billboards)
{
IMeshBuffer* buffer = nullptr;
if (alterable)
{
if (billboards.size() > maxNum)
{
GF_PRINT_CONSOLE_INFO("Billboard buffer creation failed."
"billboards' number exceeds the maxNum.\n");
return nullptr;
}
void* vertices = nullptr;
if (!billboards.empty())
vertices = (void*)&billboards[0];
buffer = createMeshBuffer(EMU_DYNAMIC, nullptr, nullptr, maxNum, 0,
sizeof(SBillboard), true);
buffer->setVertexData(vertices, billboards.size());
}
else
{
// create a static buffer.
// use the size of billboards as the maxNum. just ignore the 'maxNum'
maxNum = billboards.size();
if (maxNum == 0)
{
GF_PRINT_CONSOLE_INFO("billboards cannot be empty when creating a "
"billboard mesh");
return nullptr;
}
buffer = createMeshBuffer(EMU_STATIC, (void*)&billboards[0],
nullptr, billboards.size(), 0, sizeof(SBillboard), true);
}
if (!buffer)
{
GF_PRINT_CONSOLE_INFO("The mesh ('%s') create failed!. Due to the failure of mesh buffer.\n", name.c_str());
return nullptr;
}
CBillboardCollectionMesh* mesh = new CBillboardCollectionMesh(name, sortcode, aabb,
maxNum, alterable, billboards, buffer);
if (!mesh)
{
GF_PRINT_CONSOLE_INFO("The mesh ('%s') create failed!. Due to the lack of memory.\n", name.c_str());
buffer->drop();
return nullptr;
}
return mesh;
}