A base class for effects deforming the geometry of an actor

`<clutter-deform-effect>`

is an abstract class providing all the
plumbing for creating effects that result in the deformation of an
actor's geometry.

`<clutter-deform-effect>`

uses offscreen buffers to render the
contents of a `<clutter-actor>`

and then the Cogl vertex buffers
API to submit the geometry to the GPU.

Sub-classes of `<clutter-deform-effect>`

should override the
`deform-vertex`

virtual function; this function is called on
every vertex that needs to be deformed by the effect. Each passed vertex
is an in-out parameter that initially contains the position of the
vertex and should be modified according to a specific deformation
algorithm.

`<clutter-deform-effect>`

is available since Clutter 1.4

— Function: **clutter-deform-effect-set-n-tiles** (`self ``x_tiles ``y_tiles `

— Method:**set-n-tiles**

`<clutter-deform-effect>`

) (`unsigned-int`

) (`unsigned-int`

)— Method:

Sets the number of horizontal and vertical tiles to be used when applying the effect

More tiles allow a finer grained deformation at the expenses of computation

effect- a
`<clutter-deform-effect>`

x-tiles- number of horizontal tiles
y-tiles- number of vertical tiles
Since 1.4

— Function: **clutter-deform-effect-get-n-tiles** (`self `` ⇒ `(`x_tiles ``y_tiles `

— Method:**get-n-tiles**

`<clutter-deform-effect>`

)`unsigned-int`

) (`unsigned-int`

)— Method:

Retrieves the number of horizontal and vertical tiles used to sub-divide the actor's geometry during the effect

effect- a
`<clutter-deform-effect>`

x-tiles- return location for the number of horizontal tiles, or ‘
’.`#f`

y-tiles- return location for the number of vertical tiles, or ‘
’.`#f`

Since 1.4