spine-runtimes/spine-cpp/src/spine/TranslateTimeline.cpp
2025-07-15 22:56:12 +02:00

123 lines
4.6 KiB
C++

/******************************************************************************
* Spine Runtimes License Agreement
* Last updated April 5, 2025. Replaces all prior versions.
*
* Copyright (c) 2013-2025, 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
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*
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*****************************************************************************/
#include <spine/TranslateTimeline.h>
#include <spine/Event.h>
#include <spine/Skeleton.h>
#include <spine/Animation.h>
#include <spine/Bone.h>
#include <spine/BoneData.h>
#include <spine/Slot.h>
#include <spine/SlotData.h>
using namespace spine;
RTTI_IMPL(TranslateTimeline, BoneTimeline2)
TranslateTimeline::TranslateTimeline(size_t frameCount, size_t bezierCount, int boneIndex)
: BoneTimeline2(frameCount, bezierCount, boneIndex, Property_X, Property_Y) {
}
void TranslateTimeline::apply(BoneLocal &pose, BoneLocal &setup, float time, float alpha, MixBlend blend, MixDirection direction) {
if (time < _frames[0]) {
switch (blend) {
case MixBlend_Setup:
pose._x = setup._x;
pose._y = setup._y;
return;
case MixBlend_First:
pose._x += (setup._x - pose._x) * alpha;
pose._y += (setup._y - pose._y) * alpha;
default: {
}
}
return;
}
float x, y;
int i = Animation::search(_frames, time, CurveTimeline2::ENTRIES);
int curveType = (int) _curves[i / CurveTimeline2::ENTRIES];
switch (curveType) {
case CurveTimeline::LINEAR: {
float before = _frames[i];
x = _frames[i + CurveTimeline2::VALUE1];
y = _frames[i + CurveTimeline2::VALUE2];
float t = (time - before) / (_frames[i + CurveTimeline2::ENTRIES] - before);
x += (_frames[i + CurveTimeline2::ENTRIES + CurveTimeline2::VALUE1] - x) * t;
y += (_frames[i + CurveTimeline2::ENTRIES + CurveTimeline2::VALUE2] - y) * t;
break;
}
case CurveTimeline::STEPPED: {
x = _frames[i + CurveTimeline2::VALUE1];
y = _frames[i + CurveTimeline2::VALUE2];
break;
}
default: {
x = getBezierValue(time, i, CurveTimeline2::VALUE1, curveType - CurveTimeline2::BEZIER);
y = getBezierValue(time, i, CurveTimeline2::VALUE2, curveType + CurveTimeline2::BEZIER_SIZE - CurveTimeline2::BEZIER);
}
}
switch (blend) {
case MixBlend_Setup:
pose._x = setup._x + x * alpha;
pose._y = setup._y + y * alpha;
break;
case MixBlend_First:
case MixBlend_Replace:
pose._x += (setup._x + x - pose._x) * alpha;
pose._y += (setup._y + y - pose._y) * alpha;
break;
case MixBlend_Add:
pose._x += x * alpha;
pose._y += y * alpha;
}
}
RTTI_IMPL(TranslateXTimeline, BoneTimeline1)
TranslateXTimeline::TranslateXTimeline(size_t frameCount, size_t bezierCount, int boneIndex)
: BoneTimeline1(frameCount, bezierCount, boneIndex, Property_X) {
}
void TranslateXTimeline::apply(BoneLocal &pose, BoneLocal &setup, float time, float alpha, MixBlend blend, MixDirection direction) {
pose._x = getRelativeValue(time, alpha, blend, pose._x, setup._x);
}
RTTI_IMPL(TranslateYTimeline, BoneTimeline1)
TranslateYTimeline::TranslateYTimeline(size_t frameCount, size_t bezierCount, int boneIndex)
: BoneTimeline1(frameCount, bezierCount, boneIndex, Property_Y) {
}
void TranslateYTimeline::apply(BoneLocal &pose, BoneLocal &setup, float time, float alpha, MixBlend blend, MixDirection direction) {
pose._y = getRelativeValue(time, alpha, blend, pose._y, setup._y);
}