Transition controlled e-book animations

A non-transitory computer-readable storage medium storing instructions that, when executed by a processor, cause the processor to:

• output, for display, an indication of a first graphical user interface comprising a first page of an e-book, the first page of the e-book comprising content including text and a graphical object;
• receive an indication of user input indicative of a command to transition from the first page of the e-book to a second page of the e-book;
• responsive to receiving the indication of user input indicative of the command to transition from the first page of the e-book to the second page of the e-book and while a progression of the transition from the first page of the e-book to the second page of the e-book satisfies an animation start parameter and an animation end parameter, animate the graphical object based on the animation start parameter, the animation end parameter, and the progression of the transition from the first page of the e-book to the second page of the e-book, wherein the animation start parameter indicates a point within the transition from the first page of the e-book to the second page of the e-book at which the animation starts, and wherein the animation end parameter indicates a point within the transition from the first page of the e-book to the second page of the e-book at which the animation ends;
• and
• after animating the graphical object, output, for display, an indication of a second graphical user interface comprising an updated version of the graphical object and the second page of the e-book.

A computer system comprising:

• a processor;
• and
• a memory storing instructions that, when executed by the processor, cause the processor to:
• output, for display, an indication of a first graphical user interface comprising a first page of an e-book, the first page of the e-book comprising content including text and a graphical object;
• receive an indication of user input indicative of a command to transition from the first page of the e-book to the second page of the e-book;
• responsive to receiving the indication of user input indicative of the command to transition from the first page of the e-book to a second page of the e-book, animate the graphical object by at least causing the processor to:
• initiate the animation in response to determining that a value of a progression of the transition is greater than a value of an animation start parameter, wherein the value of the animation start parameter indicates an amount of the transition from the first page of the e-book to the second page of the e-book at which the animation begins;
• while the value of the progression of the transition from the first page of the e-book to the second page of the e-book is greater than the value of the animation start parameter and less than a value of an animation end parameter, animate the graphical object based on the value of the animation start parameter, the value of the animation end parameter, and the value of the progression of the transition from the first page of the e-book to the second page of the e-book;
• and
• terminate the animation in response to determining that the value of the progression of the transition is greater than the value of the animation end parameter, wherein the value of the animation end parameter indicates an amount of the transition from the first page of the e-book to the second page of the e-book at which the animation ends;
• and
• after animating the graphical object, output, for display, an indication of a second graphical user interface comprising an updated version of the graphical object and the second page of the e-book.