shared-ptr-example.cpp

#include <stdint.h>
#include <string>
#include <vector>
#include <array>
#include <memory>

// Can be hundreds of megabytes in these vectors
class Mesh
{
	std::string name;
	std::vector<Vector3> vertices;
	std::vector<std::array<uint32_t, 3>> indices;
	BoundingBox bbox;
};

// Just 72 or 80 bytes, very cheap to copy. Can e.g. pass copies to another threads for background processing.
class Model
{
	std::shared_ptr<Mesh> mesh;
	Matrix transform;
};