Adobe Photoshop CS6 User Manual page 358

3. In the options bar, adjust the following mesh settings:
Mode Determines the overall elasticity of the mesh.
Choose Distort for a highly elastic mesh good for warping wide-angle images or texture maps.
Density Determines the spacing of mesh points. More Points increases precision but requires more processing time; Fewer Points does the
opposite.
Expansion Expands or contracts the outer edge of the mesh.
Show Mesh Deselect to show only adjustment pins, providing a clearer preview of your transformations.
To temporarily hide adjustment pins, press the H key.
4. In the image window, click to add pins to areas you want to transform and areas you want to anchor in place.
Moving a pin on the puppet mesh. Adjoining pins keep nearby areas intact.
5. To reposition or remove pins, do any of the following:
Drag pins to warp the mesh.
To reveal a mesh area you've overlapped with another, click the Pin Depth buttons
To remove selected pins, press Delete. To remove other individual pins, place the cursor directly over them, and press Alt (Windows) or
Option (Mac OS); when the scissors icon
Click the Remove All Pins button
To select multiple pins, Shift-click them or choose Select All Pins from the context menu.
6. To rotate the mesh around a pin, select it, and then do either of the following:
To rotate the mesh a fixed number of degrees, press Alt (Windows) or Option (Mac OS), and position the cursor near to, but not over
the pins. When a circle appears, drag to visually rotate the mesh.
The degree of rotation appears in the options bar.
To rotate the mesh automatically based on the selected Mode option, choose Auto from the Rotate menu in the options bar.
7. When your transformation is complete, press Enter or Return.
appears, click.
in the options bar.
in the options bar.