Human-computer interaction method, apparatus and system and computer-readable storage medium

A human-computer interaction apparatus comprising:

• a memory;
• and
• a processor coupled to the memory, wherein the processor is configured to perform, based on instructions stored in the memory, one or more steps of a human-computer interaction method comprising:
• displaying an eraser icon on a touch display screen according to a first touch operation of a user;
• adjusting at least one of a direction, a size or a shape of the eraser icon according to a second touch operation of the user, wherein the second touch operation comprises at least one of a rotation operation or a deformation operation on the eraser icon, wherein the second touch operation further comprises an operation of enabling the eraser icon to be in an editable state, comprising:
• in case that the touch display screen is long pressed to keep displaying the eraser icon, touching another area on the touch display screen except an area where the eraser icon is displayed to enable the eraser icon to be in the editable state;
• and
• performing an erase operation on an area to be erased according to the adjusted eraser icon.

A non-transitory computer-readable storage medium having thereon stored a computer program which, when executed by a processor, implements one or more steps of a human-computer interaction method comprising:

• displaying an eraser icon on a touch display screen according to a first touch operation of a user;
• adjusting at least one of a direction, a size or a shape of the eraser icon according to a second touch operation of the user, wherein the second touch operation comprises at least one of a rotation operation or a deformation operation on the eraser icon, wherein the second touch operation further comprises an operation of enabling the eraser icon to be in an editable state, comprising:
• in case that the touch display screen is long pressed to keep displaying the eraser icon, touching another area on the touch display screen except an area where the eraser icon is displayed to enable the eraser icon to be in the editable state;
• and
• performing an erase operation on an area to be erased according to the adjusted eraser icon.