Image display device, method for controlling image display device, and information storage medium

摘要

Provided is an image display device capable of easily displaying an image depicting the deep side of a point of gaze when an operation to change a pitch angle of a viewpoint is performed by a user. The image display device displays an image rendering a scene viewed from a viewpoint in a virtual space in a line of sight, and performs at least one of a process of moving a position of the viewpoint and a process of changing the line of sight, according to a viewpoint moving operation performed by the user. The image display device also calculates a position of a pitch angle change center point which exists on a straight line extending from the viewpoint in the line of sight, changes the pitch angle of the viewpoint about the pitch angle change center point according to the pitch angle change operation performed by the user, and changes the line of sight so that the line of sight is directed to the pitch angle change center point from the position of the viewpoint with the pitch angle thus changed.

主权项

1. An image display device for displaying an image rendering a scene viewed from a viewpoint in a virtual space in a line of sight, the virtual space having at least one virtual object disposed therein, the image display device comprising:
viewpoint moving unit configured to perform at least one of a process of moving a position of the viewpoint and a process of changing the line of sight, according to a viewpoint moving operation performed by a user; pitch angle change center point position calculation unit configured to calculate a position of a pitch angle change center point which exists a given distance away from the viewpoint on a straight line extending from the viewpoint in the line of sight; and pitch angle change unit configured to rotate the viewpoint about the pitch angle change center point keeping the line of sight so that the line of sight is directed to the pitch angle change center point by changing a pitch angle of the viewpoint about the pitch angle change center point according to a pitch angle change operation performed by the user.