ShearTimeline.cpp
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/******************************************************************************
* Spine Runtimes License Agreement
* Last updated May 1, 2019. Replaces all prior versions.
*
* Copyright (c) 2013-2019, Esoteric Software LLC
*
* Integration of the Spine Runtimes into software or otherwise creating
* derivative works of the Spine Runtimes is permitted under the terms and
* conditions of Section 2 of the Spine Editor License Agreement:
* http://esotericsoftware.com/spine-editor-license
*
* Otherwise, it is permitted to integrate the Spine Runtimes into software
* or otherwise create derivative works of the Spine Runtimes (collectively,
* "Products"), provided that each user of the Products must obtain their own
* Spine Editor license and redistribution of the Products in any form must
* include this license and copyright notice.
*
* THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, BUSINESS
* INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#ifdef SPINE_UE4
#include "SpinePluginPrivatePCH.h"
#endif
#include <spine/ShearTimeline.h>
#include <spine/Skeleton.h>
#include <spine/Event.h>
#include <spine/Slot.h>
#include <spine/SlotData.h>
#include <spine/Bone.h>
#include <spine/BoneData.h>
using namespace spine;
RTTI_IMPL(ShearTimeline, TranslateTimeline)
ShearTimeline::ShearTimeline(int frameCount) : TranslateTimeline(frameCount) {
}
void ShearTimeline::apply(Skeleton &skeleton, float lastTime, float time, Vector<Event *> *pEvents, float alpha,
MixBlend blend, MixDirection direction
) {
SP_UNUSED(lastTime);
SP_UNUSED(pEvents);
SP_UNUSED(direction);
Bone *boneP = skeleton._bones[_boneIndex];
Bone &bone = *boneP;
if (!bone._active) return;
if (time < _frames[0]) {
switch (blend) {
case MixBlend_Setup:
bone._shearX = bone._data._shearX;
bone._shearY = bone._data._shearY;
return;
case MixBlend_First:
bone._shearX += (bone._data._shearX - bone._shearX) * alpha;
bone._shearY += (bone._data._shearY - bone._shearY) * alpha;
default: {}
}
return;
}
float x, y;
if (time >= _frames[_frames.size() - ENTRIES]) {
// Time is after last frame.
x = _frames[_frames.size() + PREV_X];
y = _frames[_frames.size() + PREV_Y];
} else {
// Interpolate between the previous frame and the current frame.
int frame = Animation::binarySearch(_frames, time, ENTRIES);
x = _frames[frame + PREV_X];
y = _frames[frame + PREV_Y];
float frameTime = _frames[frame];
float percent = getCurvePercent(frame / ENTRIES - 1,
1 - (time - frameTime) / (_frames[frame + PREV_TIME] - frameTime));
x = x + (_frames[frame + X] - x) * percent;
y = y + (_frames[frame + Y] - y) * percent;
}
switch (blend) {
case MixBlend_Setup:
bone._shearX = bone._data._shearX + x * alpha;
bone._shearY = bone._data._shearY + y * alpha;
break;
case MixBlend_First:
case MixBlend_Replace:
bone._shearX += (bone._data._shearX + x - bone._shearX) * alpha;
bone._shearY += (bone._data._shearY + y - bone._shearY) * alpha;
break;
case MixBlend_Add:
bone._shearX += x * alpha;
bone._shearY += y * alpha;
}
}
int ShearTimeline::getPropertyId() {
return ((int) TimelineType_Shear << 24) + _boneIndex;
}