ModelNode node; node.metaInfo["color"] = "red"; node.metaInfo["opacity"] = 0.5f;
void myFunction(ModelNode& node) { if (node.metaInfo.hasKey("color")) { std::string color = node.metaInfo["color"].asString(); std::cout << "Color: " << color << std::endl; } }In this example, we define a function that takes a ModelNode instance as an argument. Inside the function, we check if the node has a "color" property, and if it does, we retrieve its value and print it to the console. The package library for the ModelNode class and its metaInfo property would depend on the specific 3D graphics application or framework being used. However, in general, ModelNode and similar classes are often part of graphics libraries and APIs like OpenGL, DirectX, or Vulkan.