Non-transitory computer-readable medium and device for book display

A non-transitory computer-readable medium storing a book display program which causes a computer to execute instructions comprising:

• receiving a command to change a display image of a virtual book displayed on a display unit from an operator, wherein the book including a content;
• generating a display control information to be applied to the display unit and used to control transition of the display image of the book;
• and
• three-dimensionally or two-dimensionally displaying the book based on the display control information, wherein
• the generating the display control information includes:
• obtaining a display state of the book;
• and
• selecting one of command conversion rules based on at least the display state, wherein the one command conversion rule selected is applied to the received command and used to generate the display control information,
• wherein when the display state indicates that left and right pages of the book are displayed as a spread and the content of the left and right pages is substantially entirely displayed or that the content of one of the left and right pages is substantially entirely displayed and the content of the other page is not displayed or is partially displayed, and when the book is displayed magnified with a magnification ratio and the magnification ratio is within the predetermined range,
• the selecting one of command conversion rules includes selecting the command conversion rule according to which the book display program generates the display control information that causes display transition of page turning of the book or display transition from one page to the other page is executed in response to a tap command or a flick/swipe command in a crosswise direction with the magnification ratio maintained.

A book display device comprising:

• a command receiver configured to receive a command to change a display image of a virtual book displayed on a display unit from an operator, wherein the book including a content;
• a display control information generator configured to generate a display control information to be applied to the display unit and used to control transition of the display image of the book;
• and
• the display unit configured to three-dimensionally or two-dimensionally display the book based on the display control information, wherein
• the display control information generator includes:
• a display state obtainer configured to obtain a display state of the book;
• and
• a command conversion rule selector configured to select one of command conversion rules based on at least the display state, wherein the one command conversion rule selected is applied to the received command and used to generate the display control information,
• wherein when the display state indicates that the content of one of left and right pages of the book is substantially entirely displayed and the content of the other page is not displayed or is partially displayed,
• the command conversion rule selector selects the command conversion rule to generates the display control information that causes the book to be displayed such that, when the command is a command to execute display transition of page turning, a display region is moved from one side to the other side of a spread in a middle of page turning such that the content of a page on the back side of a virtual sheet including a turned page is substantially entirely displayed before the content of a page facing the page on the back side is substantially entirely displayed.

A book display device comprising:

• a command receiver configured to receive a command to change a display image of a virtual book displayed on a display unit from an operator, wherein the book including a content;
• a display control information generator configured to generate a display control information to be applied to the display unit and used to control transition of the display image of the book;
• and
• the display unit configured to three-dimensionally or two-dimensionally display the book based on the display control information, wherein
• the display control information generator includes:
• a display state obtainer configured to obtain a display state of the book;
• and
• a command conversion rule selector configured to select one of command conversion rules based on at least the display state, wherein the one command conversion rule selected is applied to the received command and used to generate the display control information,
• wherein when the display state indicates that left and right pages of the book are displayed as a spread and the content of the left and right pages is substantially entirely displayed or that the content of one of the left and right pages is substantially entirely displayed and the content of the other page is not displayed or is partially displayed, and when the book is displayed magnified with a magnification ratio and the magnification ratio is within the predetermined range,
• the command conversion rule selector selects the command conversion rule to generates the display control information that causes display transition of page turning of the book or display transition from one page to the other page in response to a tap command or a flick/swipe command in a crosswise direction with the magnification ratio maintained.