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Document provenance of Penner easing equations in Tween 

As noted in #21600.
This commit is contained in:
Rémi Verschelde 2018-09-13 12:35:54 +02:00
parent ae8f984cf3
commit 9b31d2da1c
2 changed files with 11 additions and 0 deletions
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5
COPYRIGHT.txt
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@ -96,6 +96,11 @@ Copyright: 1997-2017, Sam Lantinga
2014-2018, Godot Engine contributors. 2014-2018, Godot Engine contributors.
License: Expat and Zlib License: Expat and Zlib
Files: ./scene/animation/tween_interpolaters.cpp
Comment: Penner Easing
Copyright: 2001, Robert Penner
License: BSD-3-clause
Files: ./servers/physics/gjk_epa.cpp Files: ./servers/physics/gjk_epa.cpp
./servers/physics/joints/generic_6dof_joint_sw.cpp ./servers/physics/joints/generic_6dof_joint_sw.cpp
./servers/physics/joints/generic_6dof_joint_sw.h ./servers/physics/joints/generic_6dof_joint_sw.h

6
scene/animation/tween_interpolaters.cpp
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@ -28,6 +28,12 @@
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/ /*************************************************************************/
/**
* Adapted from Penner Easing equations' C++ port.
* Source: https://github.com/jesusgollonet/ofpennereasing
* License: BSD-3-clause
*/
#include "tween.h" #include "tween.h"
const real_t pi = 3.1415926535898; const real_t pi = 3.1415926535898;