material-motion-archive / family-direct-manipulation-android Goto Github PK

Current heuristic only enables anchor point adjustment for pinchable and/or rotatable if draggable is also active.

I insist that it's not only a useful heuristic, but it represents a deeper "truth", thus is not just a brittle patch of logic. @jverkoey fears it may not encompass all use cases.

Spec: https://material-motion.gitbooks.io/material-motion-starmap/content/specifications/motion_family/direct_manipulation.html

Would cut down on the number of operators in half http://codereview.cc/D1963#inline-7803

Spec: https://material-motion.gitbooks.io/material-motion-starmap/content/specifications/motion_family/direct_manipulation.html

Spec: https://material-motion.github.io/material-motion/starmap/specifications/primitives/gesture_recognizers/RotationGestureRecognizer

http://codereview.cc/D1655#inline-7714

Spec: https://material-motion.github.io/material-motion/starmap/specifications/primitives/gesture_recognizers/GestureRecognizer

Drag needs to track the movement of the centroid (ignoring any jumps mid-gesture due to adding/removing fingers) over time.

Scale needs to track the change in span (average distance from centroid times 2) over time.

Rotate needs to track the angle of rotation over time.

Currently, drag track velocity, but it is most likely straight up wrong.

Context: http://codereview.cc/D1986#inline-7881

Spec: https://material-motion.github.io/material-motion/starmap/specifications/primitives/gesture_recognizers/ScaleGestureRecognizer

Spec: https://material-motion.github.io/material-motion/starmap/specifications/primitives/gesture_recognizers/DragGestureRecognizer

• Support 1 finger Draggable plan and gesture recognizer.
• Support 2 fingers. Introduce centroid idea for multitouch.

Spec: https://material-motion.gitbooks.io/material-motion-starmap/content/specifications/motion_family/direct_manipulation.html

Right now setState(BEGAN) can only be called in ACTION_MOVE.

Spec: https://material-motion.gitbooks.io/material-motion-starmap/content/specifications/motion_family/direct_manipulation.html

Diff available here: http://codereview.cc/D1655

arc patch D1655 to patch locally.