Limited field of view in virtual reality

In a virtual reality system, a user may travel from a first virtual location to a second virtual location. During travel, a dynamic virtual animation may be displayed within a portal in the field of view by the user, allowing the user to experience a sensation of traveling from the first virtual location to the second virtual location. A fixed feature may be displayed in the field of view, surrounding the portal. The arrangement and position of the fixed feature may remain fixed while the dynamic virtual animation is displayed within the portal, to provide a stable frame of reference while experiencing the sensation of traveling. The stable frame of reference provided by the fixed feature may mitigate a feeling of disorientation and/or motion sickness during travel due to a mismatch between the dynamic visual experience and the stationary physical experience. 在虚拟现实系统中，用户可以从第虚拟位置行进到第二虚拟位置。在行进期间，可以在用户的视场中的门户内显示动态虚拟动画，从而允许用户体验从第虚拟位置行进到第二虚拟位置的感觉。可以在视场中围绕门户显示固定特征。固定特征的布置和位置可以保持固定，同时在门户内显示动态虚拟动画，以在体验行进感觉的同时提供稳定的参照系