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NekoX/TMessagesProj/jni/rlottie/src/lottie/lottiemodel.h

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/*
* Copyright (c) 2018 Samsung Electronics Co., Ltd. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef LOTModel_H
#define LOTModel_H
#include<vector>
#include<memory>
#include<unordered_map>
#include <algorithm>
#include"vpoint.h"
#include"vrect.h"
#include"vinterpolator.h"
#include"vmatrix.h"
#include"vbezier.h"
#include"vbrush.h"
#include"vpath.h"
V_USE_NAMESPACE
class LOTCompositionData;
class LOTLayerData;
class LOTTransformData;
class LOTShapeGroupData;
class LOTShapeData;
class LOTRectData;
class LOTEllipseData;
class LOTTrimData;
class LOTRepeaterData;
class LOTFillData;
class LOTStrokeData;
class LOTGroupData;
class LOTGFillData;
class LOTGStrokeData;
class LottieShapeData;
class LOTPolystarData;
class LOTMaskData;
enum class MatteType
{
None = 0,
Alpha = 1,
AlphaInv,
Luma,
LumaInv
};
enum class LayerType {
Precomp = 0,
Solid = 1,
Image = 2,
Null = 3,
Shape = 4,
Text = 5
};
class LottieColor
{
public:
LottieColor() = default;
LottieColor(float red, float green , float blue):r(red), g(green),b(blue){}
VColor toColor(float a=1){ return VColor((255 * r), (255 * g), (255 * b), (255 * a));}
friend inline LottieColor operator+(const LottieColor &c1, const LottieColor &c2);
friend inline LottieColor operator-(const LottieColor &c1, const LottieColor &c2);
public:
float r{1};
float g{1};
float b{1};
};
inline LottieColor operator-(const LottieColor &c1, const LottieColor &c2)
{
return LottieColor(c1.r - c2.r, c1.g - c2.g, c1.b - c2.b);
}
inline LottieColor operator+(const LottieColor &c1, const LottieColor &c2)
{
return LottieColor(c1.r + c2.r, c1.g + c2.g, c1.b + c2.b);
}
inline const LottieColor operator*(const LottieColor &c, float m)
{ return LottieColor(c.r*m, c.g*m, c.b*m); }
inline const LottieColor operator*(float m, const LottieColor &c)
{ return LottieColor(c.r*m, c.g*m, c.b*m); }
class LottieShapeData
{
public:
void reserve(int size) {
mPoints.reserve(mPoints.size() + size);
}
void toPath(VPath& path) {
path.reset();
if (mPoints.empty()) return;
int size = mPoints.size();
const VPointF *points = mPoints.data();
/* reserve exact memory requirement at once
* ptSize = size + 1(size + close)
* elmSize = size/3 cubic + 1 move + 1 close
*/
path.reserve(size + 1 , size/3 + 2);
path.moveTo(points[0]);
for (int i = 1 ; i < size; i+=3) {
path.cubicTo(points[i], points[i+1], points[i+2]);
}
if (mClosed)
path.close();
}
public:
std::vector<VPointF> mPoints;
bool mClosed = false; /* "c" */
};
template<typename T>
inline T lerp(const T& start, const T& end, float t)
{
return start + t * (end - start);
}
inline LottieShapeData lerp(const LottieShapeData& start, const LottieShapeData& end, float t)
{
// Usal case both start and end path has same size
// In case its different then truncate the larger path and do the interpolation.
LottieShapeData result;
auto size = std::min(start.mPoints.size(), end.mPoints.size());
result.reserve(size);
for (unsigned int i = 0 ; i < size; i++) {
result.mPoints.push_back(start.mPoints[i] + t * (end.mPoints[i] - start.mPoints[i]));
}
return result;
}
template <typename T>
struct LOTKeyFrameValue
{
T mStartValue;
T mEndValue;
T value(float t) const {
return lerp(mStartValue, mEndValue, t);
}
float angle(float ) const { return 0;}
};
template <>
struct LOTKeyFrameValue<VPointF>
{
VPointF mStartValue;
VPointF mEndValue;
VPointF mInTangent;
VPointF mOutTangent;
bool mPathKeyFrame = false;
VPointF value(float t) const {
if (mPathKeyFrame) {
/*
* position along the path calcualated
* using bezier at progress length (t * bezlen)
*/
VBezier b = VBezier::fromPoints(mStartValue, mStartValue + mOutTangent,
mEndValue + mInTangent, mEndValue);
return b.pointAt(b.tAtLength(t * b.length()));
} else {
return lerp(mStartValue, mEndValue, t);
}
}
float angle(float t) const {
if (mPathKeyFrame) {
VBezier b = VBezier::fromPoints(mStartValue, mStartValue + mOutTangent,
mEndValue + mInTangent, mEndValue);
return b.angleAt(b.tAtLength(t * b.length()));
}
return 0;
}
};
template<typename T>
class LOTKeyFrame
{
public:
float progress(int frameNo) const {
return mInterpolator ? mInterpolator->value((frameNo - mStartFrame) / (mEndFrame - mStartFrame)) : 0;
}
T value(int frameNo) const {
return mValue.value(progress(frameNo));
}
float angle(int frameNo) const {
return mValue.angle(progress(frameNo));
}
public:
float mStartFrame{0};
float mEndFrame{0};
std::shared_ptr<VInterpolator> mInterpolator;
LOTKeyFrameValue<T> mValue;
};
template<typename T>
class LOTAnimInfo
{
public:
T value(int frameNo) const {
if (mKeyFrames.front().mStartFrame >= frameNo)
return mKeyFrames.front().mValue.mStartValue;
if(mKeyFrames.back().mEndFrame <= frameNo)
return mKeyFrames.back().mValue.mEndValue;
for(const auto &keyFrame : mKeyFrames) {
if (frameNo >= keyFrame.mStartFrame && frameNo < keyFrame.mEndFrame)
return keyFrame.value(frameNo);
}
return T();
}
float angle(int frameNo) const {
if ((mKeyFrames.front().mStartFrame >= frameNo) ||
(mKeyFrames.back().mEndFrame <= frameNo) )
return 0;
for(const auto &keyFrame : mKeyFrames) {
if (frameNo >= keyFrame.mStartFrame && frameNo < keyFrame.mEndFrame)
return keyFrame.angle(frameNo);
}
return 0;
}
bool changed(int prevFrame, int curFrame) const {
int first = mKeyFrames.front().mStartFrame;
int last = mKeyFrames.back().mEndFrame;
if ((first > prevFrame && first > curFrame) ||
(last < prevFrame && last < curFrame)) {
return false;
}
return true;
}
public:
std::vector<LOTKeyFrame<T>> mKeyFrames;
};
template<typename T>
class LOTAnimatable
{
public:
LOTAnimatable() { construct(impl.mValue, {}); }
explicit LOTAnimatable(T value) { construct(impl.mValue, std::move(value)); }
const LOTAnimInfo<T>& animation() const {return *(impl.mAnimInfo.get());}
const T& value() const {return impl.mValue;}
LOTAnimInfo<T>& animation()
{
if (mStatic) {
destroy();
construct(impl.mAnimInfo, std::make_unique<LOTAnimInfo<T>>());
mStatic = false;
}
return *(impl.mAnimInfo.get());
}
T& value()
{
assert(mStatic);
return impl.mValue;
}
// delete special member functions
LOTAnimatable(const LOTAnimatable &) = delete;
LOTAnimatable(LOTAnimatable &&) = delete;
LOTAnimatable& operator=(const LOTAnimatable&) = delete;
LOTAnimatable& operator=(LOTAnimatable&&) = delete;
~LOTAnimatable() {destroy();}
bool isStatic() const {return mStatic;}
T value(int frameNo) const {
return isStatic() ? value() : animation().value(frameNo);
}
float angle(int frameNo) const {
return isStatic() ? 0 : animation().angle(frameNo);
}
bool changed(int prevFrame, int curFrame) const {
return isStatic() ? false : animation().changed(prevFrame, curFrame);
}
private:
template <typename Tp>
void construct(Tp& member, Tp&& val)
{
new (&member) Tp(std::move(val));
}
void destroy() {
if (mStatic) {
impl.mValue.~T();
} else {
using std::unique_ptr;
impl.mAnimInfo.~unique_ptr<LOTAnimInfo<T>>();
}
}
union details {
std::unique_ptr<LOTAnimInfo<T>> mAnimInfo;
T mValue;
details(){}
~details(){}
}impl;
bool mStatic{true};
};
enum class LottieBlendMode
{
Normal = 0,
Multiply = 1,
Screen = 2,
OverLay = 3
};
class LOTDataVisitor;
class LOTData
{
public:
enum class Type :short {
Composition = 1,
Layer,
ShapeGroup,
Transform,
Fill,
Stroke,
GFill,
GStroke,
Rect,
Ellipse,
Shape,
Polystar,
Trim,
Repeater
};
explicit LOTData(LOTData::Type type): mType(type){}
inline LOTData::Type type() const {return mType;}
bool isStatic() const{return mStatic;}
void setStatic(bool value) {mStatic = value;}
bool hidden() const {return mHidden;}
const std::string& name() const{ return mName;}
public:
std::string mName;
bool mStatic{true};
bool mHidden{false};
LOTData::Type mType;
};
class LOTGroupData: public LOTData
{
public:
explicit LOTGroupData(LOTData::Type type):LOTData(type){}
public:
std::vector<std::shared_ptr<LOTData>> mChildren;
std::shared_ptr<LOTTransformData> mTransform;
};
class LOTShapeGroupData : public LOTGroupData
{
public:
LOTShapeGroupData():LOTGroupData(LOTData::Type::ShapeGroup){}
};
class LOTLayerData;
struct LOTAsset
{
enum class Type : unsigned char{
Precomp,
Image,
Char
};
bool isStatic() const {return mStatic;}
void setStatic(bool value) {mStatic = value;}
VBitmap bitmap() const {return mBitmap;}
void loadImageData(std::string data);
void loadImagePath(std::string Path);
Type mAssetType{Type::Precomp};
bool mStatic{true};
std::string mRefId; // ref id
std::vector<std::shared_ptr<LOTData>> mLayers;
// image asset data
int mWidth{0};
int mHeight{0};
VBitmap mBitmap;
};
struct LOT3DData
{
LOTAnimatable<float> mRx{0};
LOTAnimatable<float> mRy{0};
LOTAnimatable<float> mRz{0};
};
struct TransformData
{
VMatrix matrix(int frameNo, bool autoOrient = false) const;
float opacity(int frameNo) const { return mOpacity.value(frameNo)/100.0f; }
bool isStatic() const { return mStatic;}
std::unique_ptr<LOT3DData> m3D;
LOTAnimatable<float> mRotation{0}; /* "r" */
LOTAnimatable<VPointF> mScale{{100, 100}}; /* "s" */
LOTAnimatable<VPointF> mPosition; /* "p" */
LOTAnimatable<float> mX{0};
LOTAnimatable<float> mY{0};
LOTAnimatable<VPointF> mAnchor; /* "a" */
LOTAnimatable<float> mOpacity{100}; /* "o" */
bool mSeparate{false};
bool mStatic{false};
};
class LOTTransformData : public LOTData
{
public:
LOTTransformData():LOTData(LOTData::Type::Transform){}
void set(std::unique_ptr<TransformData> data)
{
setStatic(data->isStatic());
if (isStatic()) {
new (&impl.mStaticData) static_data(data->matrix(0), data->opacity(0));
} else {
new (&impl.mData) std::unique_ptr<TransformData>(std::move(data));
}
}
VMatrix matrix(int frameNo, bool autoOrient = false) const
{
if (isStatic()) return impl.mStaticData.mMatrix;
return impl.mData->matrix(frameNo, autoOrient);
}
float opacity(int frameNo) const
{
if (isStatic()) return impl.mStaticData.mOpacity;
return impl.mData->opacity(frameNo);
}
LOTTransformData& operator=(LOTTransformData&&) = delete;
~LOTTransformData() {destroy();}
private:
void destroy() {
if (isStatic()) {
impl.mStaticData.~static_data();
} else {
using std::unique_ptr;
impl.mData.~unique_ptr<TransformData>();
}
}
struct static_data {
static_data(VMatrix &&m, float opacity):
mOpacity(opacity), mMatrix(std::move(m)){}
float mOpacity;
VMatrix mMatrix;
};
union details {
std::unique_ptr<TransformData> mData;
static_data mStaticData;
details(){}
~details(){}
}impl;
};
class LOTLayerData : public LOTGroupData
{
public:
LOTLayerData():LOTGroupData(LOTData::Type::Layer){}
bool hasPathOperator() const noexcept {return mHasPathOperator;}
bool hasGradient() const noexcept {return mHasGradient;}
bool hasMask() const noexcept {return mHasMask;}
bool hasRepeater() const noexcept {return mHasRepeater;}
int id() const noexcept{ return mId;}
int parentId() const noexcept{ return mParentId;}
int inFrame() const noexcept{return mInFrame;}
int outFrame() const noexcept{return mOutFrame;}
int startFrame() const noexcept{return mStartFrame;}
int solidWidth() const noexcept{return mSolidLayer.mWidth;}
int solidHeight() const noexcept{return mSolidLayer.mHeight;}
LottieColor solidColor() const noexcept{return mSolidLayer.mColor;}
bool autoOrient() const noexcept{return mAutoOrient;}
int timeRemap(int frameNo) const;
VSize layerSize() const {return mLayerSize;}
bool precompLayer() const {return mLayerType == LayerType::Precomp;}
VMatrix matrix(int frameNo) const
{
return mTransform ? mTransform->matrix(frameNo, autoOrient()) : VMatrix{};
}
float opacity(int frameNo) const
{
return mTransform ? mTransform->opacity(frameNo) : 1.0f;
}
public:
struct SolidLayer {
int mWidth{0};
int mHeight{0};
LottieColor mColor;
};
MatteType mMatteType{MatteType::None};
LayerType mLayerType{LayerType::Null}; //lottie layer type (solid/shape/precomp)
int mParentId{-1}; // Lottie the id of the parent in the composition
int mId{-1}; // Lottie the group id used for parenting.
long mInFrame{0};
long mOutFrame{0};
long mStartFrame{0};
VSize mLayerSize;
LottieBlendMode mBlendMode{LottieBlendMode::Normal};
float mTimeStreatch{1.0f};
std::string mPreCompRefId;
LOTAnimatable<float> mTimeRemap; /* "tm" */
SolidLayer mSolidLayer;
bool mHasPathOperator{false};
bool mHasMask{false};
bool mHasRepeater{false};
bool mHasGradient{false};
bool mAutoOrient{false};
std::vector<std::shared_ptr<LOTMaskData>> mMasks;
LOTCompositionData *mCompRef{nullptr};
std::shared_ptr<LOTAsset> mAsset;
};
using LayerInfo = std::tuple<std::string, int , int>;
class LOTCompositionData : public LOTData
{
public:
LOTCompositionData():LOTData(LOTData::Type::Composition){}
const std::vector<LayerInfo> &layerInfoList() const { return mLayerInfoList;}
double duration() const {
return frameDuration() / frameRate(); // in second
}
size_t frameAtPos(double pos) const {
if (pos < 0) pos = 0;
if (pos > 1) pos = 1;
return pos * frameDuration();
}
long frameAtTime(double timeInSec) const {
return frameAtPos(timeInSec / duration());
}
size_t totalFrame() const {return mEndFrame - mStartFrame;}
long frameDuration() const {return mEndFrame - mStartFrame -1;}
float frameRate() const {return mFrameRate;}
long startFrame() const {return mStartFrame;}
long endFrame() const {return mEndFrame;}
VSize size() const {return mSize;}
void processRepeaterObjects();
public:
std::string mVersion;
VSize mSize;
long mStartFrame{0};
long mEndFrame{0};
float mFrameRate{60};
LottieBlendMode mBlendMode{LottieBlendMode::Normal};
std::shared_ptr<LOTLayerData> mRootLayer;
std::unordered_map<std::string,
std::shared_ptr<LOTAsset>> mAssets;
std::vector<LayerInfo> mLayerInfoList;
};
/**
* TimeRemap has the value in time domain(in sec)
* To get the proper mapping first we get the mapped time at the current frame Number
* then we need to convert mapped time to frame number using the composition time line
* Ex: at frame 10 the mappend time is 0.5(500 ms) which will be convert to frame number
* 30 if the frame rate is 60. or will result to frame number 15 if the frame rate is 30.
*/
inline int LOTLayerData::timeRemap(int frameNo) const
{
/*
* only consider startFrame() when there is no timeRemap.
* when a layer has timeremap bodymovin updates the startFrame()
* of all child layer so we don't have to take care of it.
*/
frameNo = mTimeRemap.isStatic() ? frameNo - startFrame():
mCompRef->frameAtTime(mTimeRemap.value(frameNo));
/* Apply time streatch if it has any.
* Time streatch is just a factor by which the animation will speedup or slow
* down with respect to the overal animation.
* Time streach factor is already applied to the layers inFrame and outFrame.
* @TODO need to find out if timestreatch also affects the in and out frame of the
* child layers or not. */
return frameNo / mTimeStreatch;
}
class LOTFillData : public LOTData
{
public:
LOTFillData():LOTData(LOTData::Type::Fill){}
LottieColor color(int frameNo) const {return mColor.value(frameNo);}
float opacity(int frameNo) const {return mOpacity.value(frameNo)/100.0f;}
FillRule fillRule() const {return mFillRule;}
public:
FillRule mFillRule{FillRule::Winding}; /* "r" */
LOTAnimatable<LottieColor> mColor; /* "c" */
LOTAnimatable<float> mOpacity{100}; /* "o" */
bool mEnabled{true}; /* "fillEnabled" */
};
struct LOTDashProperty
{
LOTAnimatable<float> mDashArray[5]; /* "d" "g" "o"*/
int mDashCount{0};
bool mStatic{true};
};
class LOTStrokeData : public LOTData
{
public:
LOTStrokeData():LOTData(LOTData::Type::Stroke){}
LottieColor color(int frameNo) const {return mColor.value(frameNo);}
float opacity(int frameNo) const {return mOpacity.value(frameNo)/100.0f;}
float strokeWidth(int frameNo) const {return mWidth.value(frameNo);}
CapStyle capStyle() const {return mCapStyle;}
JoinStyle joinStyle() const {return mJoinStyle;}
float meterLimit() const{return mMeterLimit;}
bool hasDashInfo() const { return !(mDash.mDashCount == 0);}
int getDashInfo(int frameNo, float *array) const;
public:
LOTAnimatable<LottieColor> mColor; /* "c" */
LOTAnimatable<float> mOpacity{100}; /* "o" */
LOTAnimatable<float> mWidth{0}; /* "w" */
CapStyle mCapStyle{CapStyle::Flat}; /* "lc" */
JoinStyle mJoinStyle{JoinStyle::Miter}; /* "lj" */
float mMeterLimit{0}; /* "ml" */
LOTDashProperty mDash;
bool mEnabled{true}; /* "fillEnabled" */
};
class LottieGradient
{
public:
friend inline LottieGradient operator+(const LottieGradient &g1, const LottieGradient &g2);
friend inline LottieGradient operator-(const LottieGradient &g1, const LottieGradient &g2);
friend inline LottieGradient operator*(float m, const LottieGradient &g);
public:
std::vector<float> mGradient;
};
inline LottieGradient operator+(const LottieGradient &g1, const LottieGradient &g2)
{
if (g1.mGradient.size() != g2.mGradient.size())
return g1;
LottieGradient newG;
newG.mGradient = g1.mGradient;
auto g2It = g2.mGradient.begin();
for(auto &i : newG.mGradient) {
i = i + *g2It;
g2It++;
}
return newG;
}
inline LottieGradient operator-(const LottieGradient &g1, const LottieGradient &g2)
{
if (g1.mGradient.size() != g2.mGradient.size())
return g1;
LottieGradient newG;
newG.mGradient = g1.mGradient;
auto g2It = g2.mGradient.begin();
for(auto &i : newG.mGradient) {
i = i - *g2It;
g2It++;
}
return newG;
}
inline LottieGradient operator*(float m, const LottieGradient &g)
{
LottieGradient newG;
newG.mGradient = g.mGradient;
for(auto &i : newG.mGradient) {
i = i * m;
}
return newG;
}
class LOTGradient : public LOTData
{
public:
explicit LOTGradient(LOTData::Type type):LOTData(type){}
inline float opacity(int frameNo) const {return mOpacity.value(frameNo)/100.0;}
void update(std::unique_ptr<VGradient> &grad, int frameNo);
private:
void populate(VGradientStops &stops, int frameNo);
public:
int mGradientType{1}; /* "t" Linear=1 , Radial = 2*/
LOTAnimatable<VPointF> mStartPoint; /* "s" */
LOTAnimatable<VPointF> mEndPoint; /* "e" */
LOTAnimatable<float> mHighlightLength{0}; /* "h" */
LOTAnimatable<float> mHighlightAngle{0}; /* "a" */
LOTAnimatable<float> mOpacity{100}; /* "o" */
LOTAnimatable<LottieGradient> mGradient; /* "g" */
int mColorPoints{-1};
bool mEnabled{true}; /* "fillEnabled" */
};
class LOTGFillData : public LOTGradient
{
public:
LOTGFillData():LOTGradient(LOTData::Type::GFill){}
FillRule fillRule() const {return mFillRule;}
public:
FillRule mFillRule{FillRule::Winding}; /* "r" */
};
class LOTGStrokeData : public LOTGradient
{
public:
LOTGStrokeData():LOTGradient(LOTData::Type::GStroke){}
float width(int frameNo) const {return mWidth.value(frameNo);}
CapStyle capStyle() const {return mCapStyle;}
JoinStyle joinStyle() const {return mJoinStyle;}
float meterLimit() const{return mMeterLimit;}
bool hasDashInfo() const { return !(mDash.mDashCount == 0);}
int getDashInfo(int frameNo, float *array) const;
public:
LOTAnimatable<float> mWidth; /* "w" */
CapStyle mCapStyle{CapStyle::Flat}; /* "lc" */
JoinStyle mJoinStyle{JoinStyle::Miter}; /* "lj" */
float mMeterLimit{0}; /* "ml" */
LOTDashProperty mDash;
};
class LOTPath : public LOTData
{
public:
explicit LOTPath(LOTData::Type type):LOTData(type){}
VPath::Direction direction() { if (mDirection == 3) return VPath::Direction::CCW;
else return VPath::Direction::CW;}
public:
int mDirection{1};
};
class LOTShapeData : public LOTPath
{
public:
LOTShapeData():LOTPath(LOTData::Type::Shape){}
void process();
public:
LOTAnimatable<LottieShapeData> mShape;
};
class LOTMaskData
{
public:
enum class Mode {
None,
Add,
Substarct,
Intersect,
Difference
};
float opacity(int frameNo) const {return mOpacity.value(frameNo)/100.0f;}
bool isStatic() const {return mIsStatic;}
public:
LOTAnimatable<LottieShapeData> mShape;
LOTAnimatable<float> mOpacity{100};
bool mInv{false};
bool mIsStatic{true};
LOTMaskData::Mode mMode;
};
class LOTRectData : public LOTPath
{
public:
LOTRectData():LOTPath(LOTData::Type::Rect){}
public:
LOTAnimatable<VPointF> mPos;
LOTAnimatable<VPointF> mSize;
LOTAnimatable<float> mRound{0};
};
class LOTEllipseData : public LOTPath
{
public:
LOTEllipseData():LOTPath(LOTData::Type::Ellipse){}
public:
LOTAnimatable<VPointF> mPos;
LOTAnimatable<VPointF> mSize;
};
class LOTPolystarData : public LOTPath
{
public:
enum class PolyType {
Star = 1,
Polygon = 2
};
LOTPolystarData():LOTPath(LOTData::Type::Polystar){}
public:
LOTPolystarData::PolyType mType{PolyType::Polygon};
LOTAnimatable<VPointF> mPos;
LOTAnimatable<float> mPointCount{0};
LOTAnimatable<float> mInnerRadius{0};
LOTAnimatable<float> mOuterRadius{0};
LOTAnimatable<float> mInnerRoundness{0};
LOTAnimatable<float> mOuterRoundness{0};
LOTAnimatable<float> mRotation{0};
};
class LOTTrimData : public LOTData
{
public:
struct Segment {
float start{0};
float end{0};
Segment() {}
Segment(float s, float e):start(s), end(e) {}
};
enum class TrimType {
Simultaneously,
Individually
};
LOTTrimData():LOTData(LOTData::Type::Trim){}
/*
* if start > end vector trims the path as a loop ( 2 segment)
* if start < end vector trims the path without loop ( 1 segment).
* if no offset then there is no loop.
*/
Segment segment(int frameNo) const {
float start = mStart.value(frameNo)/100.0f;
float end = mEnd.value(frameNo)/100.0f;
float offset = fmod(mOffset.value(frameNo), 360.0f)/ 360.0f;
float diff = fabs(start - end);
if (vCompare(diff, 0.0f)) return Segment(0, 0);
if (vCompare(diff, 1.0f)) return Segment(0, 1);
if (offset > 0) {
start += offset;
end += offset;
if (start <= 1 && end <=1) {
return noloop(start, end);
} else if (start > 1 && end > 1) {
return noloop(start - 1, end - 1);
} else {
if (start > 1) return loop(start - 1 , end);
else return loop(start , end - 1);
}
} else {
start += offset;
end += offset;
if (start >= 0 && end >= 0) {
return noloop(start, end);
} else if (start < 0 && end < 0) {
return noloop(1 + start, 1 + end);
} else {
if (start < 0) return loop(1 + start, end);
else return loop(start , 1 + end);
}
}
}
LOTTrimData::TrimType type() const {return mTrimType;}
private:
Segment noloop(float start, float end) const{
assert(start >= 0);
assert(end >= 0);
Segment s;
s.start = std::min(start, end);
s.end = std::max(start, end);
return s;
}
Segment loop(float start, float end) const{
assert(start >= 0);
assert(end >= 0);
Segment s;
s.start = std::max(start, end);
s.end = std::min(start, end);
return s;
}
public:
LOTAnimatable<float> mStart{0};
LOTAnimatable<float> mEnd{0};
LOTAnimatable<float> mOffset{0};
LOTTrimData::TrimType mTrimType{TrimType::Simultaneously};
};
class LOTRepeaterTransform
{
public:
VMatrix matrix(int frameNo, float multiplier) const;
float startOpacity(int frameNo) const { return mStartOpacity.value(frameNo)/100;}
float endOpacity(int frameNo) const { return mEndOpacity.value(frameNo)/100;}
bool isStatic() const
{
return mRotation.isStatic() &&
mScale.isStatic() &&
mPosition.isStatic() &&
mAnchor.isStatic() &&
mStartOpacity.isStatic() &&
mEndOpacity.isStatic();
}
public:
LOTAnimatable<float> mRotation{0}; /* "r" */
LOTAnimatable<VPointF> mScale{{100, 100}}; /* "s" */
LOTAnimatable<VPointF> mPosition; /* "p" */
LOTAnimatable<VPointF> mAnchor; /* "a" */
LOTAnimatable<float> mStartOpacity{100}; /* "so" */
LOTAnimatable<float> mEndOpacity{100}; /* "eo" */
};
class LOTRepeaterData : public LOTData
{
public:
LOTRepeaterData():LOTData(LOTData::Type::Repeater){}
LOTShapeGroupData *content() const { return mContent ? mContent.get() : nullptr; }
void setContent(std::shared_ptr<LOTShapeGroupData> content) {mContent = std::move(content);}
int maxCopies() const { return int(mMaxCopies);}
float copies(int frameNo) const {return mCopies.value(frameNo);}
float offset(int frameNo) const {return mOffset.value(frameNo);}
public:
std::shared_ptr<LOTShapeGroupData> mContent{nullptr};
LOTRepeaterTransform mTransform;
LOTAnimatable<float> mCopies{0};
LOTAnimatable<float> mOffset{0};
float mMaxCopies{0.0};
};
class LOTModel
{
public:
bool isStatic() const {return mRoot->isStatic();}
double duration() const {return mRoot->duration();}
size_t totalFrame() const {return mRoot->totalFrame();}
size_t frameDuration() const {return mRoot->frameDuration();}
size_t frameRate() const {return mRoot->frameRate();}
size_t startFrame() const {return mRoot->startFrame();}
size_t endFrame() const {return mRoot->endFrame();}
size_t frameAtPos(double pos) const {return mRoot->frameAtPos(pos);}
const std::vector<LayerInfo> &layerInfoList() const { return mRoot->layerInfoList();}
public:
std::shared_ptr<LOTCompositionData> mRoot;
};
#endif // LOTModel_H
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