---
name: "Clutter::Interval"
section: "3pm"
platform: "linux"
package: "libclutter-perl"
version: "1.002-1"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/Clutter::Interval"
---

# Clutter::Interval(3pm)

An object holding an interval of two values

## NAME

Clutter::Interval - An object holding an interval of two values

## SYNOPSIS

```
    my $interval = Clutter::Interval->new('Glib::Int', 0, 11);
    my $value = $interval->compute_value(0.5);
```

## DESCRIPTION

**Clutter::Interval** is a simple object providing a strongly-typed storage for a interval between two values.

**Note**: Once a Clutter::Interval for a specific type has been instantiated the Clutter::Interval *value-type* property cannot be changed anymore.

Clutter::Interval is used by #ClutterAnimation to define the interval of values that an implicit animation should tween over.

**Note**: Currently, you cannot subclass a Clutter::Interval to override the interval validation and the value computation; this requires additional support inside the Glib Perl bindings that is not currently available.

## HIERARCHY

```
  Glib::Object
  +----Glib::InitiallyUnowned
       +----Clutter::Interval
```

## METHODS

### interval = Clutter::Interval-\>new ($type, $initial=undef, $final=undef)

- •

  `$type` (string)

- •

  `$initial` (scalar)

- •

  `$final` (scalar)

Creates a new Clutter::Interval, representing an interval of values with the given *type*

### value = $interval-\>compute\_value ($factor)

- •

  `$factor` (double)

Computes the value of the *interval* given the *factor*

### scalar = $interval-\>get\_final\_value

Gets the final value of the *interval*

### $interval-\>set\_final\_value ($final)

- •

  `$final` (scalar)

Sets the *final* value of the *interval*

### scalar = $interval-\>get\_initial\_value

Gets the *initial* value of the *interval*

### $interval-\>set\_initial\_value ($initial)

- •

  `$initial` (scalar)

Sets the *initial* value of the *interval*

### (initial, final) = $interval-\>get\_interval ()

Gets the *initial* and *final* values of the *interval*

### $interval-\>set\_interval ($initial, $final)

- •

  `$initial` (scalar)

- •

  `$final` (scalar)

Sets the *initial* and *final* values of the interval. The values must be compatible with the type set when creating the *interval* itself

### boolean = $interval-\>validate ($pspec)

- •

  `$pspec` (Glib::ParamSpec)

### string = $interval-\>get\_value\_type

Gets the type of the values inside the *interval*

## PROPERTIES

- 'value-type' (GType : readable / writable / construct-only)

  The type of the values in the interval

## SEE ALSO

Clutter, Glib::Object, Glib::InitiallyUnowned

## COPYRIGHT

Copyright (C) 2006, 2007, 2008  OpenedHand Ltd

Copyright (C) 2009  Intel Corporation

This module is free software; you can redistribute it and/or modify it under the terms of either:

- •

  the GNU Lesser General Public Library version 2.1; or

- •

  the Artistic License, version 2.0.

See Clutter for the full copyright notice.