Multi-touch object inertia simulation

A computing device comprising:

• a contact-sensitive surface;
• a display;
• processing hardware;
• storage hardware storing instructions executable by the processing hardware of the computing device, the instructions configured to cause the processing hardware to perform a process, the process comprising:
• providing a first module and a second module for an application executing on the computing device, the first module and the second module invoked through one or more APIs that are accessible to applications executing on the computing device;
• and
• computing, by the first and second modules, affine transform events and manipulating, by the application, a graphic object displayed by the display according to the affine transform events, wherein some of the affine transform events are computed by the first module receiving and tracking locations of an input point on the contact-sensitive surface and wherein other of the affine transform events are computed by the second module simulating inertial affine transforms for the graphic object, each affine transform event comprising a translation and/or rotation and/or scale transform, wherein the locations are provided by the contact-sensitive surface sensing the input point.

A computing device comprising:

• a contact-sensitive surface;
• a display;
• processing hardware;
• storage hardware storing instructions executable by the processing hardware of the computing device, the instructions configured to cause the processing hardware to perform a process, the process comprising:
• providing a first module and a second module for an application executing on the computing device, the first module and the second module invoked through one or more APIs that are accessible to applications executing on the computing device;
• and
• computing, for the application, affine transform events and manipulating, by the application, a graphic object displayed by the display according to the affine transform events, wherein some of the affine transform events are computed by the first module receiving and tracking locations of an input point on the contact-sensitive surface and wherein other of the affine transform events are computed by the second module simulating inertial affine transforms for the graphic object, each affine transform event comprising a translation and/or rotation and/or scale transform, wherein the locations are provided by the contact-sensitive surface sensing the input point.