Contextual-based rendering of virtual avatars

A wearable system for automatically scaling a virtual avatar, the wearable system comprising:

• a device sensor configured to image an environment of a user;
• a pose sensor configured to measure a pose of the user;
• a display configured to display virtual content in a mixed reality environment;
• and
• a hardware processor programmed to:
• receive pose data from the pose sensor;
• calculate a head position of a user with reference to a world frame based at least partly on the pose data, wherein the world frame includes a reference frame associated with the environment of the user;
• determine a major horizontal plane with reference to the world frame in the environment of the user;
• calculate a height of the user based on the major horizontal plane and the head position of the user;
• calculate a target height of an avatar based at least partly on the calculated height of the user;
• automatically scale the avatar based on the target height;
• and
• cause the display to automatically render the avatar at the target height.