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638 lines
30 KiB
Plaintext
638 lines
30 KiB
Plaintext
#import <SoftwareLottieRenderer/SoftwareLottieRenderer.h>
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#import "Canvas.h"
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#import "CoreGraphicsCanvasImpl.h"
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#import "ThorVGCanvasImpl.h"
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#import "NullCanvasImpl.h"
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#include <LottieCpp/RenderTreeNode.h>
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namespace {
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static constexpr float minVisibleAlpha = 0.5f / 255.0f;
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static constexpr float minGlobalRectCalculationSize = 200.0f;
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struct TransformedPath {
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lottie::BezierPath path;
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lottie::CATransform3D transform;
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TransformedPath(lottie::BezierPath const &path_, lottie::CATransform3D const &transform_) :
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path(path_),
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transform(transform_) {
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}
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};
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static lottie::CGRect collectPathBoundingBoxes(std::shared_ptr<lottie::RenderTreeNodeContentItem> item, size_t subItemLimit, lottie::CATransform3D const &parentTransform, bool skipApplyTransform, lottie::BezierPathsBoundingBoxContext &bezierPathsBoundingBoxContext) {
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//TODO:remove skipApplyTransform
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lottie::CATransform3D effectiveTransform = parentTransform;
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if (!skipApplyTransform && item->isGroup) {
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effectiveTransform = item->transform * effectiveTransform;
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}
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size_t maxSubitem = std::min(item->subItems.size(), subItemLimit);
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lottie::CGRect boundingBox(0.0, 0.0, 0.0, 0.0);
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if (item->path) {
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if (item->path->needsBoundsRecalculation) {
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item->path->bounds = lottie::bezierPathsBoundingBoxParallel(bezierPathsBoundingBoxContext, item->path->path);
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item->path->needsBoundsRecalculation = false;
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}
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boundingBox = item->path->bounds.applyingTransform(effectiveTransform);
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}
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for (size_t i = 0; i < maxSubitem; i++) {
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auto &subItem = item->subItems[i];
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lottie::CGRect subItemBoundingBox = collectPathBoundingBoxes(subItem, INT32_MAX, effectiveTransform, false, bezierPathsBoundingBoxContext);
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if (boundingBox.empty()) {
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boundingBox = subItemBoundingBox;
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} else {
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boundingBox = boundingBox.unionWith(subItemBoundingBox);
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}
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}
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return boundingBox;
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}
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static void enumeratePaths(std::shared_ptr<lottie::RenderTreeNodeContentItem> item, size_t subItemLimit, lottie::CATransform3D const &parentTransform, bool skipApplyTransform, std::function<void(lottie::BezierPath const &path, lottie::CATransform3D const &transform)> const &onPath) {
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//TODO:remove skipApplyTransform
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lottie::CATransform3D effectiveTransform = parentTransform;
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if (!skipApplyTransform && item->isGroup) {
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effectiveTransform = item->transform * effectiveTransform;
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}
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size_t maxSubitem = std::min(item->subItems.size(), subItemLimit);
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if (item->path) {
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onPath(item->path->path, effectiveTransform);
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}
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for (size_t i = 0; i < maxSubitem; i++) {
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auto &subItem = item->subItems[i];
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enumeratePaths(subItem, INT32_MAX, effectiveTransform, false, onPath);
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}
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}
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}
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namespace lottie {
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static std::optional<CGRect> getRenderContentItemGlobalRect(std::shared_ptr<RenderTreeNodeContentItem> const &contentItem, lottie::Vector2D const &globalSize, lottie::CATransform3D const &parentTransform, BezierPathsBoundingBoxContext &bezierPathsBoundingBoxContext) {
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auto currentTransform = parentTransform;
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CATransform3D localTransform = contentItem->transform;
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currentTransform = localTransform * currentTransform;
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std::optional<CGRect> globalRect;
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for (const auto &shadingVariant : contentItem->shadings) {
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lottie::CGRect shapeBounds = collectPathBoundingBoxes(contentItem, shadingVariant->subItemLimit, lottie::CATransform3D::identity(), true, bezierPathsBoundingBoxContext);
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if (shadingVariant->stroke) {
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shapeBounds = shapeBounds.insetBy(-shadingVariant->stroke->lineWidth / 2.0, -shadingVariant->stroke->lineWidth / 2.0);
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} else if (shadingVariant->fill) {
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} else {
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continue;
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}
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CGRect shapeGlobalBounds = shapeBounds.applyingTransform(currentTransform);
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if (globalRect) {
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globalRect = globalRect->unionWith(shapeGlobalBounds);
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} else {
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globalRect = shapeGlobalBounds;
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}
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}
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for (const auto &subItem : contentItem->subItems) {
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auto subGlobalRect = getRenderContentItemGlobalRect(subItem, globalSize, currentTransform, bezierPathsBoundingBoxContext);
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if (subGlobalRect) {
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if (globalRect) {
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globalRect = globalRect->unionWith(subGlobalRect.value());
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} else {
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globalRect = subGlobalRect.value();
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}
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}
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}
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if (globalRect) {
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CGRect integralGlobalRect(
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std::floor(globalRect->x),
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std::floor(globalRect->y),
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std::ceil(globalRect->width + globalRect->x - floor(globalRect->x)),
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std::ceil(globalRect->height + globalRect->y - floor(globalRect->y))
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);
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return integralGlobalRect.intersection(CGRect(0.0, 0.0, globalSize.x, globalSize.y));
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} else {
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return std::nullopt;
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}
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}
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static std::optional<CGRect> getRenderNodeGlobalRect(std::shared_ptr<RenderTreeNode> const &node, lottie::Vector2D const &globalSize, lottie::CATransform3D const &parentTransform, bool isInvertedMatte, BezierPathsBoundingBoxContext &bezierPathsBoundingBoxContext) {
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if (node->isHidden() || node->alpha() < minVisibleAlpha) {
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return std::nullopt;
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}
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auto currentTransform = parentTransform;
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Vector2D localTranslation(node->position().x + -node->bounds().x, node->position().y + -node->bounds().y);
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CATransform3D localTransform = node->transform();
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localTransform = localTransform.translated(localTranslation);
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currentTransform = localTransform * currentTransform;
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std::optional<CGRect> globalRect;
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if (node->_contentItem) {
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globalRect = getRenderContentItemGlobalRect(node->_contentItem, globalSize, currentTransform, bezierPathsBoundingBoxContext);
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}
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if (isInvertedMatte) {
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CGRect globalBounds = node->bounds().applyingTransform(currentTransform);
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if (globalRect) {
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globalRect = globalRect->unionWith(globalBounds);
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} else {
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globalRect = globalBounds;
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}
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}
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for (const auto &subNode : node->subnodes()) {
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auto subGlobalRect = getRenderNodeGlobalRect(subNode, globalSize, currentTransform, false, bezierPathsBoundingBoxContext);
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if (subGlobalRect) {
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if (globalRect) {
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globalRect = globalRect->unionWith(subGlobalRect.value());
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} else {
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globalRect = subGlobalRect.value();
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}
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}
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}
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if (globalRect) {
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CGRect integralGlobalRect(
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std::floor(globalRect->x),
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std::floor(globalRect->y),
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std::ceil(globalRect->width + globalRect->x - floor(globalRect->x)),
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std::ceil(globalRect->height + globalRect->y - floor(globalRect->y))
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);
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return integralGlobalRect.intersection(CGRect(0.0, 0.0, globalSize.x, globalSize.y));
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} else {
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return std::nullopt;
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}
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}
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}
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namespace {
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static void drawLottieContentItem(std::shared_ptr<lottieRendering::Canvas> const &parentContext, std::shared_ptr<lottie::RenderTreeNodeContentItem> item, float parentAlpha, lottie::Vector2D const &globalSize, lottie::CATransform3D const &parentTransform, lottie::BezierPathsBoundingBoxContext &bezierPathsBoundingBoxContext) {
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auto currentTransform = parentTransform;
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lottie::CATransform3D localTransform = item->transform;
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currentTransform = localTransform * currentTransform;
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float normalizedOpacity = item->alpha;
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float layerAlpha = ((float)normalizedOpacity) * parentAlpha;
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if (normalizedOpacity == 0.0f) {
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return;
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}
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parentContext->saveState();
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std::shared_ptr<lottieRendering::Canvas> const *currentContext;
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std::shared_ptr<lottieRendering::Canvas> tempContext;
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bool needsTempContext = false;
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needsTempContext = layerAlpha != 1.0 && item->drawContentCount > 1;
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std::optional<lottie::CGRect> globalRect;
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if (needsTempContext) {
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if (globalSize.x <= minGlobalRectCalculationSize && globalSize.y <= minGlobalRectCalculationSize) {
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globalRect = lottie::CGRect(0.0, 0.0, globalSize.x, globalSize.y);
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} else {
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globalRect = lottie::getRenderContentItemGlobalRect(item, globalSize, parentTransform, bezierPathsBoundingBoxContext);
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}
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if (!globalRect || globalRect->width <= 0.0f || globalRect->height <= 0.0f) {
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parentContext->restoreState();
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return;
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}
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auto tempContextValue = parentContext->makeLayer((int)(globalRect->width), (int)(globalRect->height));
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tempContext = tempContextValue;
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currentContext = &tempContext;
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(*currentContext)->concatenate(lottie::CATransform3D::identity().translated(lottie::Vector2D(-globalRect->x, -globalRect->y)));
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(*currentContext)->saveState();
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(*currentContext)->concatenate(currentTransform);
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} else {
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currentContext = &parentContext;
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}
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parentContext->concatenate(item->transform);
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float renderAlpha = 1.0;
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if (tempContext) {
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renderAlpha = 1.0;
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} else {
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renderAlpha = layerAlpha;
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}
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for (const auto &shading : item->shadings) {
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lottieRendering::CanvasPathEnumerator iteratePaths;
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if (shading->explicitPath) {
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auto itemPaths = shading->explicitPath.value();
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iteratePaths = [itemPaths = itemPaths](std::function<void(lottieRendering::PathCommand const &)> iterate) -> void {
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lottieRendering::PathCommand pathCommand;
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for (const auto &path : itemPaths) {
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std::optional<lottie::PathElement> previousElement;
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for (const auto &element : path.elements()) {
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if (previousElement.has_value()) {
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if (previousElement->vertex.outTangentRelative().isZero() && element.vertex.inTangentRelative().isZero()) {
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pathCommand.type = lottieRendering::PathCommandType::LineTo;
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pathCommand.points[0] = CGPointMake(element.vertex.point.x, element.vertex.point.y);
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iterate(pathCommand);
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} else {
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pathCommand.type = lottieRendering::PathCommandType::CurveTo;
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pathCommand.points[2] = CGPointMake(element.vertex.point.x, element.vertex.point.y);
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pathCommand.points[1] = CGPointMake(element.vertex.inTangent.x, element.vertex.inTangent.y);
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pathCommand.points[0] = CGPointMake(previousElement->vertex.outTangent.x, previousElement->vertex.outTangent.y);
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iterate(pathCommand);
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}
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} else {
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pathCommand.type = lottieRendering::PathCommandType::MoveTo;
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pathCommand.points[0] = CGPointMake(element.vertex.point.x, element.vertex.point.y);
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iterate(pathCommand);
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}
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previousElement = element;
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}
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if (path.closed().value_or(true)) {
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pathCommand.type = lottieRendering::PathCommandType::Close;
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iterate(pathCommand);
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}
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}
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};
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} else {
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iteratePaths = [&](std::function<void(lottieRendering::PathCommand const &)> iterate) {
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enumeratePaths(item, shading->subItemLimit, lottie::CATransform3D::identity(), true, [&](lottie::BezierPath const &sourcePath, lottie::CATransform3D const &transform) {
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auto path = sourcePath.copyUsingTransform(transform);
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lottieRendering::PathCommand pathCommand;
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std::optional<lottie::PathElement> previousElement;
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for (const auto &element : path.elements()) {
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if (previousElement.has_value()) {
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if (previousElement->vertex.outTangentRelative().isZero() && element.vertex.inTangentRelative().isZero()) {
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pathCommand.type = lottieRendering::PathCommandType::LineTo;
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pathCommand.points[0] = CGPointMake(element.vertex.point.x, element.vertex.point.y);
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iterate(pathCommand);
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} else {
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pathCommand.type = lottieRendering::PathCommandType::CurveTo;
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pathCommand.points[2] = CGPointMake(element.vertex.point.x, element.vertex.point.y);
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pathCommand.points[1] = CGPointMake(element.vertex.inTangent.x, element.vertex.inTangent.y);
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pathCommand.points[0] = CGPointMake(previousElement->vertex.outTangent.x, previousElement->vertex.outTangent.y);
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iterate(pathCommand);
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}
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} else {
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pathCommand.type = lottieRendering::PathCommandType::MoveTo;
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pathCommand.points[0] = CGPointMake(element.vertex.point.x, element.vertex.point.y);
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iterate(pathCommand);
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}
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previousElement = element;
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}
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if (path.closed().value_or(true)) {
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pathCommand.type = lottieRendering::PathCommandType::Close;
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iterate(pathCommand);
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}
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});
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};
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}
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/*auto iteratePaths = [&](std::function<void(lottieRendering::PathCommand const &)> iterate) -> void {
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lottieRendering::PathCommand pathCommand;
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for (const auto &path : itemPaths) {
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std::optional<lottie::PathElement> previousElement;
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for (const auto &element : path.elements()) {
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if (previousElement.has_value()) {
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if (previousElement->vertex.outTangentRelative().isZero() && element.vertex.inTangentRelative().isZero()) {
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pathCommand.type = lottieRendering::PathCommandType::LineTo;
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pathCommand.points[0] = CGPointMake(element.vertex.point.x, element.vertex.point.y);
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iterate(pathCommand);
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} else {
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pathCommand.type = lottieRendering::PathCommandType::CurveTo;
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pathCommand.points[2] = CGPointMake(element.vertex.point.x, element.vertex.point.y);
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pathCommand.points[1] = CGPointMake(element.vertex.inTangent.x, element.vertex.inTangent.y);
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pathCommand.points[0] = CGPointMake(previousElement->vertex.outTangent.x, previousElement->vertex.outTangent.y);
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iterate(pathCommand);
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}
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} else {
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pathCommand.type = lottieRendering::PathCommandType::MoveTo;
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pathCommand.points[0] = CGPointMake(element.vertex.point.x, element.vertex.point.y);
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iterate(pathCommand);
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}
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previousElement = element;
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}
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if (path.closed().value_or(true)) {
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pathCommand.type = lottieRendering::PathCommandType::Close;
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iterate(pathCommand);
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}
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}
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};*/
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if (shading->stroke) {
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if (shading->stroke->shading->type() == lottie::RenderTreeNodeContentItem::ShadingType::Solid) {
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lottie::RenderTreeNodeContentItem::SolidShading *solidShading = (lottie::RenderTreeNodeContentItem::SolidShading *)shading->stroke->shading.get();
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if (solidShading->opacity != 0.0) {
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lottie::LineJoin lineJoin = lottie::LineJoin::Bevel;
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switch (shading->stroke->lineJoin) {
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case lottie::LineJoin::Bevel: {
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lineJoin = lottie::LineJoin::Bevel;
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break;
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}
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case lottie::LineJoin::Round: {
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lineJoin = lottie::LineJoin::Round;
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break;
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}
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case lottie::LineJoin::Miter: {
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lineJoin = lottie::LineJoin::Miter;
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break;
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}
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default: {
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break;
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}
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}
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lottie::LineCap lineCap = lottie::LineCap::Square;
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switch (shading->stroke->lineCap) {
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case lottie::LineCap::Butt: {
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lineCap = lottie::LineCap::Butt;
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break;
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}
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case lottie::LineCap::Round: {
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lineCap = lottie::LineCap::Round;
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break;
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}
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case lottie::LineCap::Square: {
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lineCap = lottie::LineCap::Square;
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break;
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}
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default: {
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break;
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}
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}
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std::vector<float> dashPattern;
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if (!shading->stroke->dashPattern.empty()) {
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dashPattern = shading->stroke->dashPattern;
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}
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(*currentContext)->strokePath(iteratePaths, shading->stroke->lineWidth, lineJoin, lineCap, shading->stroke->dashPhase, dashPattern, lottie::Color(solidShading->color.r, solidShading->color.g, solidShading->color.b, solidShading->color.a * solidShading->opacity * renderAlpha));
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} else if (shading->stroke->shading->type() == lottie::RenderTreeNodeContentItem::ShadingType::Gradient) {
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//TODO:gradient stroke
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}
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}
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} else if (shading->fill) {
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lottie::FillRule rule = lottie::FillRule::NonZeroWinding;
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switch (shading->fill->rule) {
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case lottie::FillRule::EvenOdd: {
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rule = lottie::FillRule::EvenOdd;
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break;
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}
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case lottie::FillRule::NonZeroWinding: {
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rule = lottie::FillRule::NonZeroWinding;
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break;
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}
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default: {
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break;
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}
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}
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if (shading->fill->shading->type() == lottie::RenderTreeNodeContentItem::ShadingType::Solid) {
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lottie::RenderTreeNodeContentItem::SolidShading *solidShading = (lottie::RenderTreeNodeContentItem::SolidShading *)shading->fill->shading.get();
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if (solidShading->opacity != 0.0) {
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(*currentContext)->fillPath(iteratePaths, rule, lottie::Color(solidShading->color.r, solidShading->color.g, solidShading->color.b, solidShading->color.a * solidShading->opacity * renderAlpha));
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}
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} else if (shading->fill->shading->type() == lottie::RenderTreeNodeContentItem::ShadingType::Gradient) {
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lottie::RenderTreeNodeContentItem::GradientShading *gradientShading = (lottie::RenderTreeNodeContentItem::GradientShading *)shading->fill->shading.get();
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if (gradientShading->opacity != 0.0) {
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std::vector<lottie::Color> colors;
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std::vector<float> locations;
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for (const auto &color : gradientShading->colors) {
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colors.push_back(lottie::Color(color.r, color.g, color.b, color.a * gradientShading->opacity * renderAlpha));
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}
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locations = gradientShading->locations;
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lottieRendering::Gradient gradient(colors, locations);
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lottie::Vector2D start(gradientShading->start.x, gradientShading->start.y);
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lottie::Vector2D end(gradientShading->end.x, gradientShading->end.y);
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switch (gradientShading->gradientType) {
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case lottie::GradientType::Linear: {
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(*currentContext)->linearGradientFillPath(iteratePaths, rule, gradient, start, end);
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break;
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}
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case lottie::GradientType::Radial: {
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(*currentContext)->radialGradientFillPath(iteratePaths, rule, gradient, start, 0.0, start, start.distanceTo(end));
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break;
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}
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default: {
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break;
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}
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}
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}
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}
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}
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}
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for (auto it = item->subItems.rbegin(); it != item->subItems.rend(); it++) {
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const auto &subItem = *it;
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drawLottieContentItem(*currentContext, subItem, renderAlpha, globalSize, currentTransform, bezierPathsBoundingBoxContext);
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}
|
|
|
|
if (tempContext) {
|
|
tempContext->restoreState();
|
|
|
|
parentContext->concatenate(currentTransform.inverted());
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|
parentContext->setAlpha(layerAlpha);
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|
parentContext->draw(tempContext, globalRect.value());
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|
parentContext->setAlpha(1.0);
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|
}
|
|
|
|
parentContext->restoreState();
|
|
}
|
|
|
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static void renderLottieRenderNode(std::shared_ptr<lottie::RenderTreeNode> node, std::shared_ptr<lottieRendering::Canvas> const &parentContext, lottie::Vector2D const &globalSize, lottie::CATransform3D const &parentTransform, float parentAlpha, bool isInvertedMatte, lottie::BezierPathsBoundingBoxContext &bezierPathsBoundingBoxContext) {
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|
float normalizedOpacity = node->alpha();
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|
float layerAlpha = ((float)normalizedOpacity) * parentAlpha;
|
|
|
|
if (node->isHidden() || normalizedOpacity < minVisibleAlpha) {
|
|
return;
|
|
}
|
|
|
|
auto currentTransform = parentTransform;
|
|
lottie::Vector2D localTranslation(node->position().x + -node->bounds().x, node->position().y + -node->bounds().y);
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|
lottie::CATransform3D localTransform = node->transform();
|
|
localTransform = localTransform.translated(localTranslation);
|
|
currentTransform = localTransform * currentTransform;
|
|
|
|
std::shared_ptr<lottieRendering::Canvas> maskContext;
|
|
std::shared_ptr<lottieRendering::Canvas> currentContext;
|
|
std::shared_ptr<lottieRendering::Canvas> tempContext;
|
|
|
|
bool masksToBounds = node->masksToBounds();
|
|
if (masksToBounds) {
|
|
lottie::CGRect effectiveGlobalBounds = node->bounds().applyingTransform(currentTransform);
|
|
if (effectiveGlobalBounds.width <= 0.0f || effectiveGlobalBounds.height <= 0.0f) {
|
|
return;
|
|
}
|
|
if (effectiveGlobalBounds.contains(lottie::CGRect(0.0, 0.0, globalSize.x, globalSize.y))) {
|
|
masksToBounds = false;
|
|
}
|
|
}
|
|
|
|
parentContext->saveState();
|
|
|
|
bool needsTempContext = false;
|
|
if (node->mask() && !node->mask()->isHidden() && node->mask()->alpha() >= minVisibleAlpha) {
|
|
needsTempContext = true;
|
|
} else {
|
|
needsTempContext = layerAlpha != 1.0 || masksToBounds;
|
|
}
|
|
|
|
std::optional<lottie::CGRect> globalRect;
|
|
if (needsTempContext) {
|
|
if (globalSize.x <= minGlobalRectCalculationSize && globalSize.y <= minGlobalRectCalculationSize) {
|
|
globalRect = lottie::CGRect(0.0, 0.0, globalSize.x, globalSize.y);
|
|
} else {
|
|
globalRect = lottie::getRenderNodeGlobalRect(node, globalSize, parentTransform, false, bezierPathsBoundingBoxContext);
|
|
}
|
|
if (!globalRect || globalRect->width <= 0.0f || globalRect->height <= 0.0f) {
|
|
parentContext->restoreState();
|
|
return;
|
|
}
|
|
|
|
if ((node->mask() && !node->mask()->isHidden() && node->mask()->alpha() >= minVisibleAlpha) || masksToBounds) {
|
|
auto maskBackingStorage = parentContext->makeLayer((int)(globalRect->width), (int)(globalRect->height));
|
|
|
|
maskBackingStorage->concatenate(lottie::CATransform3D::identity().translated(lottie::Vector2D(-globalRect->x, -globalRect->y)));
|
|
maskBackingStorage->concatenate(currentTransform);
|
|
|
|
if (masksToBounds) {
|
|
maskBackingStorage->fill(lottie::CGRect(node->bounds().x, node->bounds().y, node->bounds().width, node->bounds().height), lottie::Color(1.0, 1.0, 1.0, 1.0));
|
|
}
|
|
if (node->mask() && !node->mask()->isHidden() && node->mask()->alpha() >= minVisibleAlpha) {
|
|
renderLottieRenderNode(node->mask(), maskBackingStorage, globalSize, currentTransform, 1.0, node->invertMask(), bezierPathsBoundingBoxContext);
|
|
}
|
|
|
|
maskContext = maskBackingStorage;
|
|
}
|
|
|
|
auto tempContextValue = parentContext->makeLayer((int)(globalRect->width), (int)(globalRect->height));
|
|
tempContext = tempContextValue;
|
|
|
|
currentContext = tempContextValue;
|
|
currentContext->concatenate(lottie::CATransform3D::identity().translated(lottie::Vector2D(-globalRect->x, -globalRect->y)));
|
|
|
|
currentContext->saveState();
|
|
currentContext->concatenate(currentTransform);
|
|
} else {
|
|
currentContext = parentContext;
|
|
}
|
|
|
|
parentContext->concatenate(lottie::CATransform3D::identity().translated(lottie::Vector2D(node->position().x, node->position().y)));
|
|
parentContext->concatenate(lottie::CATransform3D::identity().translated(lottie::Vector2D(-node->bounds().x, -node->bounds().y)));
|
|
parentContext->concatenate(node->transform());
|
|
|
|
float renderAlpha = 1.0;
|
|
if (tempContext) {
|
|
renderAlpha = 1.0;
|
|
} else {
|
|
renderAlpha = layerAlpha;
|
|
}
|
|
|
|
if (node->_contentItem) {
|
|
drawLottieContentItem(currentContext, node->_contentItem, renderAlpha, globalSize, currentTransform, bezierPathsBoundingBoxContext);
|
|
}
|
|
|
|
if (isInvertedMatte) {
|
|
currentContext->fill(lottie::CGRect(node->bounds().x, node->bounds().y, node->bounds().width, node->bounds().height), lottie::Color(0.0, 0.0, 0.0, 1.0));
|
|
currentContext->setBlendMode(lottieRendering::BlendMode::DestinationOut);
|
|
}
|
|
|
|
for (const auto &subnode : node->subnodes()) {
|
|
renderLottieRenderNode(subnode, currentContext, globalSize, currentTransform, renderAlpha, false, bezierPathsBoundingBoxContext);
|
|
}
|
|
|
|
if (tempContext) {
|
|
tempContext->restoreState();
|
|
|
|
if (maskContext) {
|
|
tempContext->setBlendMode(lottieRendering::BlendMode::DestinationIn);
|
|
tempContext->draw(maskContext, lottie::CGRect(globalRect->x, globalRect->y, globalRect->width, globalRect->height));
|
|
}
|
|
|
|
parentContext->concatenate(currentTransform.inverted());
|
|
parentContext->setAlpha(layerAlpha);
|
|
parentContext->draw(tempContext, globalRect.value());
|
|
}
|
|
|
|
parentContext->restoreState();
|
|
}
|
|
|
|
}
|
|
|
|
CGRect getPathNativeBoundingBox(CGPathRef _Nonnull path) {
|
|
auto rect = calculatePathBoundingBox(path);
|
|
return CGRectMake(rect.origin.x, rect.origin.y, rect.size.width, rect.size.height);
|
|
}
|
|
|
|
@interface SoftwareLottieRenderer() {
|
|
LottieAnimationContainer *_animationContainer;
|
|
std::shared_ptr<lottie::BezierPathsBoundingBoxContext> _bezierPathsBoundingBoxContext;
|
|
}
|
|
|
|
@end
|
|
|
|
@implementation SoftwareLottieRenderer
|
|
|
|
- (instancetype _Nonnull)initWithAnimationContainer:(LottieAnimationContainer * _Nonnull)animationContainer {
|
|
self = [super init];
|
|
if (self != nil) {
|
|
_animationContainer = animationContainer;
|
|
_bezierPathsBoundingBoxContext = std::make_shared<lottie::BezierPathsBoundingBoxContext>();
|
|
}
|
|
return self;
|
|
}
|
|
|
|
- (UIImage * _Nullable)renderForSize:(CGSize)size useReferenceRendering:(bool)useReferenceRendering {
|
|
LottieAnimation *animation = _animationContainer.animation;
|
|
std::shared_ptr<lottie::RenderTreeNode> renderNode = [_animationContainer internalGetRootRenderTreeNode];
|
|
if (!renderNode) {
|
|
return nil;
|
|
}
|
|
|
|
lottie::CATransform3D rootTransform = lottie::CATransform3D::identity().scaled(lottie::Vector2D(size.width / (float)animation.size.width, size.height / (float)animation.size.height));
|
|
|
|
if (useReferenceRendering) {
|
|
auto context = std::make_shared<lottieRendering::CanvasImpl>((int)size.width, (int)size.height);
|
|
|
|
CGPoint scale = CGPointMake(size.width / (CGFloat)animation.size.width, size.height / (CGFloat)animation.size.height);
|
|
context->concatenate(lottie::CATransform3D::makeScale(scale.x, scale.y, 1.0));
|
|
|
|
renderLottieRenderNode(renderNode, context, lottie::Vector2D(context->width(), context->height()), rootTransform, 1.0, false, *_bezierPathsBoundingBoxContext.get());
|
|
|
|
auto image = context->makeImage();
|
|
|
|
return [[UIImage alloc] initWithCGImage:std::static_pointer_cast<lottieRendering::ImageImpl>(image)->nativeImage()];
|
|
} else {
|
|
//auto context = std::make_shared<lottieRendering::ThorVGCanvasImpl>((int)size.width, (int)size.height);
|
|
auto context = std::make_shared<lottieRendering::NullCanvasImpl>((int)size.width, (int)size.height);
|
|
|
|
CGPoint scale = CGPointMake(size.width / (CGFloat)animation.size.width, size.height / (CGFloat)animation.size.height);
|
|
context->concatenate(lottie::CATransform3D::makeScale(scale.x, scale.y, 1.0));
|
|
|
|
renderLottieRenderNode(renderNode, context, lottie::Vector2D(context->width(), context->height()), rootTransform, 1.0, false, *_bezierPathsBoundingBoxContext.get());
|
|
|
|
return nil;
|
|
}
|
|
}
|
|
|
|
@end
|