Portal view for content items

A system comprising:

• memory;
• and
• one or more processors at a device coupled to the memory, wherein the memory comprises program instructions that, when executed on the one or more processors, cause the system to perform operations comprising:
• determining a first position for a viewing portal within a three dimensional (3D) coordinate system corresponding to an environment;
• determining a second position for a content item within the 3D coordinate system, wherein the second position is opposite a front surface of the viewing portal;
• generating a surface object, wherein the surface object is textured with an image corresponding to the content item, and wherein the surface object is positioned at the second position;
• determining a viewpoint of the electronic device within the 3D coordinate system;
• identifying a portion of the surface object visible through the viewing portal from the viewpoint, wherein the portion is identified based on the first position, the second position, and the viewpoint;
• and
• providing a view of the identified portion of the surface object in the environment.

A non-transitory computer-readable storage medium, storing program instructions executable via one or more processors to perform operations comprising:

• determining a first position for a viewing portal within a three dimensional (3D) coordinate system corresponding to an environment;
• determining a second position for a content item within the 3D coordinate system, wherein the second position is opposite a front surface of the viewing portal;
• generating a surface object, wherein the surface object is textured with an image corresponding to the content item, and wherein the surface object is positioned at the second position;
• determining a viewpoint of the electronic device within the 3D coordinate system;
• identifying a portion of the surface object visible through the viewing portal from the viewpoint, wherein the portion is identified based on the first position, the second position, and the viewpoint;
• and
• providing a view of the identified portion of the surface object in the environment.