Image generation apparatus, image generation program, medium that records the program, and image generation method

An image generation program executed by a computer of an image generation apparatus that sets a virtual camera at a viewpoint position of a player character in a virtual three-dimensional space where at least one object including the player character is set and the player character moves in accordance with a user's operation of an inputter, three-dimensional coordinates of the virtual three-dimensional space being predetermined, and generates a virtual three-dimensional spatial image viewed from the virtual camera in a direction of a line of sight to display the three-dimensional spatial image on a screen, the program causing the computer to function as:

• a touch position detector that detects a touched position on the screen per frame;
• a determiner that determines whether the touched position detected by the touch position detector is within a predefined region on the screen;
• a first controller that moves the virtual camera along the direction of the line of sight in the virtual three-dimensional space in a case where the touched position is determined to be within the predefined region by the determiner;
• and
• a second controller that pans or tilts the virtual camera depending on the touched position in the virtual three-dimensional space in a case where the touched position is determined to be outside the predefined region by the determiner,
• wherein the second controller comprises a rotation angle controller that controls a rotation angle of the virtual camera depending on the touched position, thereby rotating the direction of the line of sight in the virtual three-dimensional space.

A computer readable medium that stores an image generation program executed by a computer of an image generation apparatus that sets a virtual camera at a viewpoint position of a player character in a virtual three-dimensional space where at least one object including the player character is set and the player character moves in accordance with a user's operation of an inputter, three-dimensional coordinates of the virtual three-dimensional space being predetermined, generates a virtual three-dimensional spatial image from a virtual camera in a direction of a line of sight to display the three-dimensional spatial image on a screen, the program causing the computer to function as:

• a touch position detector that detects a touched position on the screen per frame;
• a determiner that determines whether the touched position detected by the touched position detector is within a predefined region on the screen;
• a first controller that moves the virtual camera along the direction of the line of sight in the virtual three-dimensional space in a case where the touched position is determined to be within the predefined region by the determiner;
• and
• a second controller that pans or tilts the virtual camera depending on the touched position in the virtual three-dimensional space in a case where the touched position is determined to be outside the predefined region by the determiner,
• wherein the second controller comprises a rotation angle controller that controls a rotation angle of the virtual camera depending on the touched position, thereby rotating the direction of the line of sight in the virtual three-dimensional space.

An image generation method that sets a virtual camera at a viewpoint position of a player character in a virtual three-dimensional space where at least one object including the player character is set and the player character moves in accordance with a user's operation of an inputter, three-dimensional coordinates of the virtual three-dimensional space being predetermined, and generates a virtual three-dimensional spatial image from the virtual camera in a direction of a line of sight to display the three-dimensional spatial image on a screen, the method comprising:

• a touch position detection step for detecting a touched position on the screen per frame;
• a determination step for determining whether the touched position detected by the touch position detection step is within a predefined region on the screen;
• a first control step for moving the virtual camera along the direction of the line of sight in the virtual three-dimensional space in a case where the touched position is determined to be within the predefined region by the determination step;
• and
• a second control step for panning or tilting the virtual camera depending on the touched position in the virtual three-dimensional space in a case where the touched position is determined to be outside the predefined region by the determination step,
• wherein the second control step comprises a step for controlling a rotation angle of the virtual camera depending on the touched position, thereby rotating the direction of the line of sight in the virtual three-dimensional space.