Area Shape tool
Description
The shape tool allows the user to draw a freehand area which is then measured to
provide the surface area and perimeter. To use this tool simply drag it onto the
image viewer and then left-click on the image and drag the mouse. A line will
start being traced on the image. Once you have finished release the mouse button
and again left-click anywhere on the image, the line or shape will turn green.
You can edit an existing shape by left-clicking on the line of the shape to
highlight it red. The individual points that make the shape can then be edited.