Graphics

At any given moment, Graphics has a mode. The Graphics mode determines how gestures will be interpreted. The graphics mode is determined by values for Smooth, Open, Filled and, Track settings for Graphics

Lines

Needs two touches, the end points.

With Track 'ON'

Rectangles

Needs two touches, the end points of one of the two diagonals(anyone will do)

With Track 'ON'.

Circles and Ellipses

Needs two touches, the end points needed for the rectangle in which it will be inscribed.

With Track 'ON'.

Filled areas

With 'Smooth' OFF

Arbitrary Closed Curves

One touch, continuous movement

Cropping a Pano to a closed curve

A graphic unfilled curve can be used to crop a pano.

Choose the image(here from Roll) Create a closed curve(1) on top. Adjust the curve by zooming/moving the layer,

press 'i'(info button), pick the details

Turn use as crop on, press 'Done' Save the pano(current image is Load the saved image.

not cropped)