Easing: Difference between revisions
(Created page with "Easing functions describe functions that control the way an interpolation between 0 and 1 is done. The most basic one, linear, is just a linear interpolation at constant speed. ...") |
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The naming conventions of the functions below, available in [[moveObject]], [[interpolateBetween]], or [[getEasingValue]] as been extracted from http://doc.qt.nokia.com/latest/qeasingcurve.html. Only a subset of those functions is available in MTA since some of them are a bit redundant (only the profile or acceleration/deceleration changes). | The naming conventions of the functions below, available in [[moveObject]], [[interpolateBetween]], or [[getEasingValue]] as been extracted from http://doc.qt.nokia.com/latest/qeasingcurve.html. Only a subset of those functions is available in MTA since some of them are a bit redundant (only the profile or acceleration/deceleration changes). | ||
== Preliminary note == | |||
In the functions using easing, there are usually 3 optional parameters. Most functions don't need them at all, the ones needing one or more parameters are listed in the table below. When providing optional parameters, all the parameters before a given parameter must be filled, even if the easing function you intend to use doesn't require such a parameter. In this case, simply use 0 for the parameters you don't need. | In the functions using easing, there are usually 3 optional parameters. Most functions don't need them at all, the ones needing one or more parameters are listed in the table below. When providing optional parameters, all the parameters before a given parameter must be filled, even if the easing function you intend to use doesn't require such a parameter. In this case, simply use 0 for the parameters you don't need. | ||
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== Easing functions == | == Easing functions == | ||
(table | <table border="1" class="unnamed1"> | ||
<tr> | |||
<th>Easing function (strEasingType)</th> | |||
<th>Function profile</th> | |||
<th>Can use fEasingPeriod (default 0.3)</th> | |||
<th>Can use fEasingAmplitude (default 1.0)</th> | |||
<th>Can use fEasingOvershoot(default 1.7015)</th> | |||
<th>Comments</th> | |||
</tr> | |||
<tr> | |||
<td>Linear</td> | |||
<td></td> | |||
<td></td><td></td><td></td><td></td> | |||
</tr> | |||
<tr> | |||
<td>InQuad</td> | |||
<td></td> | |||
<td></td><td></td><td></td><td></td> | |||
</tr> | |||
</table> | |||
Revision as of 10:54, 17 December 2010
Easing functions describe functions that control the way an interpolation between 0 and 1 is done.
The most basic one, linear, is just a linear interpolation at constant speed. Other more advanced easing functions can have acceleration at the beginning, the end or both, or deceleration , or even bouncing or elastic effects.
The naming conventions of the functions below, available in moveObject, interpolateBetween, or getEasingValue as been extracted from http://doc.qt.nokia.com/latest/qeasingcurve.html. Only a subset of those functions is available in MTA since some of them are a bit redundant (only the profile or acceleration/deceleration changes).
Preliminary note
In the functions using easing, there are usually 3 optional parameters. Most functions don't need them at all, the ones needing one or more parameters are listed in the table below. When providing optional parameters, all the parameters before a given parameter must be filled, even if the easing function you intend to use doesn't require such a parameter. In this case, simply use 0 for the parameters you don't need. Examples:
- "Linear" can used simply with getEasingValue( fProgress, "Linear" )
- "OutElastic" can define fEasingPeriod and fEasingAmplitude with getEasingValue( fProgress, "OutElastic", 0.3, 1.0 )
- "InBack" can define fEasingOvershoot, but since it comes after fEasingPeriod and fEasingAmplitude in the order of parameters, 0 must be used for the others with getEasingValue( fProgress, "InBack", 0, 0, 1.7015 )
Easing functions
| Easing function (strEasingType) | Function profile | Can use fEasingPeriod (default 0.3) | Can use fEasingAmplitude (default 1.0) | Can use fEasingOvershoot(default 1.7015) | Comments |
|---|---|---|---|---|---|
| Linear | |||||
| InQuad |