Generation of avatar animations using motion modifiers

A system comprising:

• at least one processor;
• and
• a memory coupled to the at least one processor, with software instructions stored thereon that, when executed by the at least one processor, cause the at least one processor to perform operations including:
• determining a base animation defined by a plurality of animation curves, each animation curve including position values that indicate positions of an associated portion of an avatar at multiple points of time;
• determining one or more motion modifiers, wherein each of the motion modifiers is composed of one or more modification primitives configured to modify a respective animation curve of the base animation, the respective animation curve associated with a respective portion of the avatar;
• determining one or more respective parameters of the one or more motion modifiers, wherein at least one of the one or more respective parameters specifies a magnitude of an animation modification by a respective modification primitive of the one or more modification primitives;
• and
• modifying the base animation to generate a modified animation, wherein modifying the base animation includes applying the one or more motion modifiers to the base animation, wherein each of the one or more modification primitives of each motion modifier modifies the respective animation curve based on at least one of the one or more respective parameters of the motion modifier.

A non-transitory computer-readable medium with instructions stored thereon that, when executed by a processor, cause the processor to perform operations comprising:

• determining, a base animation defined by a plurality of animation curves, each animation curve including position values that indicate positions of an associated portion of an avatar at multiple points of time;
• determining, one or more motion modifiers, wherein each of the motion modifiers is composed of one or more modification primitives configured to modify a respective animation curve of the base animation, the respective animation curve associated with a respective portion of the avatar;
• determining one or more respective parameters of the one or more motion modifiers;
• and
• modifying the base animation to generate a modified animation, wherein modifying the base animation includes applying the one or more motion modifiers to the base animation, wherein each of the one or more modification primitives of each motion modifier modifies the respective animation curve based on at least one of the one or more respective parameters of the motion modifier.