TransformConstraintTimeline.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/TransformConstraintTimeline.h>
#include <spine/Skeleton.h>
#include <spine/Event.h>
#include <spine/Animation.h>
#include <spine/TimelineType.h>
#include <spine/Slot.h>
#include <spine/SlotData.h>
#include <spine/TransformConstraint.h>
#include <spine/TransformConstraintData.h>
using namespace spine;
RTTI_IMPL(TransformConstraintTimeline, CurveTimeline)
const int TransformConstraintTimeline::ENTRIES = 5;
const int TransformConstraintTimeline::PREV_TIME = -5;
const int TransformConstraintTimeline::PREV_ROTATE = -4;
const int TransformConstraintTimeline::PREV_TRANSLATE = -3;
const int TransformConstraintTimeline::PREV_SCALE = -2;
const int TransformConstraintTimeline::PREV_SHEAR = -1;
const int TransformConstraintTimeline::ROTATE = 1;
const int TransformConstraintTimeline::TRANSLATE = 2;
const int TransformConstraintTimeline::SCALE = 3;
const int TransformConstraintTimeline::SHEAR = 4;
TransformConstraintTimeline::TransformConstraintTimeline(int frameCount) : CurveTimeline(frameCount),
_transformConstraintIndex(0)
{
_frames.setSize(frameCount * ENTRIES, 0);
}
void TransformConstraintTimeline::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);
TransformConstraint *constraintP = skeleton._transformConstraints[_transformConstraintIndex];
TransformConstraint &constraint = *constraintP;
if (!constraint.isActive()) return;
if (time < _frames[0]) {
switch (blend) {
case MixBlend_Setup:
constraint._rotateMix = constraint._data._rotateMix;
constraint._translateMix = constraint._data._translateMix;
constraint._scaleMix = constraint._data._scaleMix;
constraint._shearMix = constraint._data._shearMix;
return;
case MixBlend_First:
constraint._rotateMix += (constraint._data._rotateMix - constraint._rotateMix) * alpha;
constraint._translateMix += (constraint._data._translateMix - constraint._translateMix) * alpha;
constraint._scaleMix += (constraint._data._scaleMix - constraint._scaleMix) * alpha;
constraint._shearMix += (constraint._data._shearMix - constraint._shearMix) * alpha;
return;
default:
return;
}
}
float rotate, translate, scale, shear;
if (time >= _frames[_frames.size() - ENTRIES]) {
// Time is after last frame.
size_t i = _frames.size();
rotate = _frames[i + PREV_ROTATE];
translate = _frames[i + PREV_TRANSLATE];
scale = _frames[i + PREV_SCALE];
shear = _frames[i + PREV_SHEAR];
} else {
// Interpolate between the previous frame and the current frame.
int frame = Animation::binarySearch(_frames, time, ENTRIES);
rotate = _frames[frame + PREV_ROTATE];
translate = _frames[frame + PREV_TRANSLATE];
scale = _frames[frame + PREV_SCALE];
shear = _frames[frame + PREV_SHEAR];
float frameTime = _frames[frame];
float percent = getCurvePercent(frame / ENTRIES - 1,
1 - (time - frameTime) / (_frames[frame + PREV_TIME] - frameTime));
rotate += (_frames[frame + ROTATE] - rotate) * percent;
translate += (_frames[frame + TRANSLATE] - translate) * percent;
scale += (_frames[frame + SCALE] - scale) * percent;
shear += (_frames[frame + SHEAR] - shear) * percent;
}
if (blend == MixBlend_Setup) {
TransformConstraintData &data = constraint._data;
constraint._rotateMix = data._rotateMix + (rotate - data._rotateMix) * alpha;
constraint._translateMix = data._translateMix + (translate - data._translateMix) * alpha;
constraint._scaleMix = data._scaleMix + (scale - data._scaleMix) * alpha;
constraint._shearMix = data._shearMix + (shear - data._shearMix) * alpha;
} else {
constraint._rotateMix += (rotate - constraint._rotateMix) * alpha;
constraint._translateMix += (translate - constraint._translateMix) * alpha;
constraint._scaleMix += (scale - constraint._scaleMix) * alpha;
constraint._shearMix += (shear - constraint._shearMix) * alpha;
}
}
int TransformConstraintTimeline::getPropertyId() {
return ((int) TimelineType_TransformConstraint << 24) + _transformConstraintIndex;
}
void TransformConstraintTimeline::setFrame(size_t frameIndex, float time, float rotateMix, float translateMix, float scaleMix,
float shearMix
) {
frameIndex *= ENTRIES;
_frames[frameIndex] = time;
_frames[frameIndex + ROTATE] = rotateMix;
_frames[frameIndex + TRANSLATE] = translateMix;
_frames[frameIndex + SCALE] = scaleMix;
_frames[frameIndex + SHEAR] = shearMix;
}