| /* |
| * Copyright 2018 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "modules/skottie/src/SkottiePriv.h" |
| |
| #include "include/core/SkPath.h" |
| #include "modules/skottie/src/SkottieAdapter.h" |
| #include "modules/skottie/src/SkottieJson.h" |
| #include "modules/skottie/src/SkottieValue.h" |
| #include "modules/sksg/include/SkSGDraw.h" |
| #include "modules/sksg/include/SkSGGeometryTransform.h" |
| #include "modules/sksg/include/SkSGGradient.h" |
| #include "modules/sksg/include/SkSGGroup.h" |
| #include "modules/sksg/include/SkSGMerge.h" |
| #include "modules/sksg/include/SkSGPaint.h" |
| #include "modules/sksg/include/SkSGPath.h" |
| #include "modules/sksg/include/SkSGRect.h" |
| #include "modules/sksg/include/SkSGRenderEffect.h" |
| #include "modules/sksg/include/SkSGRoundEffect.h" |
| #include "modules/sksg/include/SkSGTransform.h" |
| #include "modules/sksg/include/SkSGTrimEffect.h" |
| #include "src/utils/SkJSON.h" |
| |
| #include <algorithm> |
| #include <iterator> |
| |
| namespace skottie { |
| namespace internal { |
| |
| namespace { |
| |
| sk_sp<sksg::GeometryNode> AttachPathGeometry(const skjson::ObjectValue& jpath, |
| const AnimationBuilder* abuilder) { |
| return abuilder->attachPath(jpath["ks"]); |
| } |
| |
| sk_sp<sksg::GeometryNode> AttachRRectGeometry(const skjson::ObjectValue& jrect, |
| const AnimationBuilder* abuilder) { |
| auto rect_node = sksg::RRect::Make(); |
| rect_node->setDirection(ParseDefault(jrect["d"], -1) == 3 ? SkPath::kCCW_Direction |
| : SkPath::kCW_Direction); |
| rect_node->setInitialPointIndex(2); // starting point: (Right, Top - radius.y) |
| |
| auto adapter = sk_make_sp<RRectAdapter>(rect_node); |
| |
| auto p_attached = abuilder->bindProperty<VectorValue>(jrect["p"], |
| [adapter](const VectorValue& p) { |
| adapter->setPosition(ValueTraits<VectorValue>::As<SkPoint>(p)); |
| }); |
| auto s_attached = abuilder->bindProperty<VectorValue>(jrect["s"], |
| [adapter](const VectorValue& s) { |
| adapter->setSize(ValueTraits<VectorValue>::As<SkSize>(s)); |
| }); |
| auto r_attached = abuilder->bindProperty<ScalarValue>(jrect["r"], |
| [adapter](const ScalarValue& r) { |
| adapter->setRadius(SkSize::Make(r, r)); |
| }); |
| |
| if (!p_attached && !s_attached && !r_attached) { |
| return nullptr; |
| } |
| |
| return rect_node; |
| } |
| |
| sk_sp<sksg::GeometryNode> AttachEllipseGeometry(const skjson::ObjectValue& jellipse, |
| const AnimationBuilder* abuilder) { |
| auto rect_node = sksg::RRect::Make(); |
| rect_node->setDirection(ParseDefault(jellipse["d"], -1) == 3 ? SkPath::kCCW_Direction |
| : SkPath::kCW_Direction); |
| rect_node->setInitialPointIndex(1); // starting point: (Center, Top) |
| |
| auto adapter = sk_make_sp<RRectAdapter>(rect_node); |
| |
| auto p_attached = abuilder->bindProperty<VectorValue>(jellipse["p"], |
| [adapter](const VectorValue& p) { |
| adapter->setPosition(ValueTraits<VectorValue>::As<SkPoint>(p)); |
| }); |
| auto s_attached = abuilder->bindProperty<VectorValue>(jellipse["s"], |
| [adapter](const VectorValue& s) { |
| const auto sz = ValueTraits<VectorValue>::As<SkSize>(s); |
| adapter->setSize(sz); |
| adapter->setRadius(SkSize::Make(sz.width() / 2, sz.height() / 2)); |
| }); |
| |
| if (!p_attached && !s_attached) { |
| return nullptr; |
| } |
| |
| return rect_node; |
| } |
| |
| sk_sp<sksg::GeometryNode> AttachPolystarGeometry(const skjson::ObjectValue& jstar, |
| const AnimationBuilder* abuilder) { |
| static constexpr PolyStarAdapter::Type gTypes[] = { |
| PolyStarAdapter::Type::kStar, // "sy": 1 |
| PolyStarAdapter::Type::kPoly, // "sy": 2 |
| }; |
| |
| const auto type = ParseDefault<size_t>(jstar["sy"], 0) - 1; |
| if (type >= SK_ARRAY_COUNT(gTypes)) { |
| abuilder->log(Logger::Level::kError, &jstar, "Unknown polystar type."); |
| return nullptr; |
| } |
| |
| auto path_node = sksg::Path::Make(); |
| auto adapter = sk_make_sp<PolyStarAdapter>(path_node, gTypes[type]); |
| |
| abuilder->bindProperty<VectorValue>(jstar["p"], |
| [adapter](const VectorValue& p) { |
| adapter->setPosition(ValueTraits<VectorValue>::As<SkPoint>(p)); |
| }); |
| abuilder->bindProperty<ScalarValue>(jstar["pt"], |
| [adapter](const ScalarValue& pt) { |
| adapter->setPointCount(pt); |
| }); |
| abuilder->bindProperty<ScalarValue>(jstar["ir"], |
| [adapter](const ScalarValue& ir) { |
| adapter->setInnerRadius(ir); |
| }); |
| abuilder->bindProperty<ScalarValue>(jstar["or"], |
| [adapter](const ScalarValue& otr) { |
| adapter->setOuterRadius(otr); |
| }); |
| abuilder->bindProperty<ScalarValue>(jstar["is"], |
| [adapter](const ScalarValue& is) { |
| adapter->setInnerRoundness(is); |
| }); |
| abuilder->bindProperty<ScalarValue>(jstar["os"], |
| [adapter](const ScalarValue& os) { |
| adapter->setOuterRoundness(os); |
| }); |
| abuilder->bindProperty<ScalarValue>(jstar["r"], |
| [adapter](const ScalarValue& r) { |
| adapter->setRotation(r); |
| }); |
| |
| return path_node; |
| } |
| |
| sk_sp<sksg::ShaderPaint> AttachGradient(const skjson::ObjectValue& jgrad, |
| const AnimationBuilder* abuilder) { |
| const skjson::ObjectValue* stops = jgrad["g"]; |
| if (!stops) |
| return nullptr; |
| |
| const auto stopCount = ParseDefault<int>((*stops)["p"], -1); |
| if (stopCount < 0) |
| return nullptr; |
| |
| sk_sp<sksg::Gradient> gradient_node; |
| sk_sp<GradientAdapter> adapter; |
| |
| if (ParseDefault<int>(jgrad["t"], 1) == 1) { |
| auto linear_node = sksg::LinearGradient::Make(); |
| adapter = sk_make_sp<LinearGradientAdapter>(linear_node, stopCount); |
| gradient_node = std::move(linear_node); |
| } else { |
| auto radial_node = sksg::RadialGradient::Make(); |
| adapter = sk_make_sp<RadialGradientAdapter>(radial_node, stopCount); |
| |
| // TODO: highlight, angle |
| gradient_node = std::move(radial_node); |
| } |
| |
| abuilder->bindProperty<VectorValue>( |
| (*stops)["k"], [adapter](const VectorValue& stops) { adapter->setStops(stops); }); |
| abuilder->bindProperty<VectorValue>(jgrad["s"], |
| [adapter](const VectorValue& s) { |
| adapter->setStartPoint(ValueTraits<VectorValue>::As<SkPoint>(s)); |
| }); |
| abuilder->bindProperty<VectorValue>(jgrad["e"], |
| [adapter](const VectorValue& e) { |
| adapter->setEndPoint(ValueTraits<VectorValue>::As<SkPoint>(e)); |
| }); |
| |
| return sksg::ShaderPaint::Make(std::move(gradient_node)); |
| } |
| |
| sk_sp<sksg::PaintNode> AttachPaint(const skjson::ObjectValue& jpaint, |
| const AnimationBuilder* abuilder, |
| sk_sp<sksg::PaintNode> paint_node) { |
| if (paint_node) { |
| paint_node->setAntiAlias(true); |
| |
| abuilder->bindProperty<ScalarValue>(jpaint["o"], |
| [paint_node](const ScalarValue& o) { |
| // BM opacity is [0..100] |
| paint_node->setOpacity(o * 0.01f); |
| }); |
| } |
| |
| return paint_node; |
| } |
| |
| sk_sp<sksg::PaintNode> AttachStroke(const skjson::ObjectValue& jstroke, |
| const AnimationBuilder* abuilder, |
| sk_sp<sksg::PaintNode> stroke_node) { |
| if (!stroke_node) |
| return nullptr; |
| |
| stroke_node->setStyle(SkPaint::kStroke_Style); |
| |
| abuilder->bindProperty<ScalarValue>(jstroke["w"], |
| [stroke_node](const ScalarValue& w) { |
| stroke_node->setStrokeWidth(w); |
| }); |
| |
| stroke_node->setStrokeMiter(ParseDefault<SkScalar>(jstroke["ml"], 4.0f)); |
| |
| static constexpr SkPaint::Join gJoins[] = { |
| SkPaint::kMiter_Join, |
| SkPaint::kRound_Join, |
| SkPaint::kBevel_Join, |
| }; |
| stroke_node->setStrokeJoin(gJoins[SkTMin<size_t>(ParseDefault<size_t>(jstroke["lj"], 1) - 1, |
| SK_ARRAY_COUNT(gJoins) - 1)]); |
| |
| static constexpr SkPaint::Cap gCaps[] = { |
| SkPaint::kButt_Cap, |
| SkPaint::kRound_Cap, |
| SkPaint::kSquare_Cap, |
| }; |
| stroke_node->setStrokeCap(gCaps[SkTMin<size_t>(ParseDefault<size_t>(jstroke["lc"], 1) - 1, |
| SK_ARRAY_COUNT(gCaps) - 1)]); |
| |
| return stroke_node; |
| } |
| |
| sk_sp<sksg::PaintNode> AttachColorFill(const skjson::ObjectValue& jfill, |
| const AnimationBuilder* abuilder) { |
| return AttachPaint(jfill, abuilder, abuilder->attachColor(jfill, "c")); |
| } |
| |
| sk_sp<sksg::PaintNode> AttachGradientFill(const skjson::ObjectValue& jfill, |
| const AnimationBuilder* abuilder) { |
| return AttachPaint(jfill, abuilder, AttachGradient(jfill, abuilder)); |
| } |
| |
| sk_sp<sksg::PaintNode> AttachColorStroke(const skjson::ObjectValue& jstroke, |
| const AnimationBuilder* abuilder) { |
| return AttachStroke(jstroke, abuilder, AttachPaint(jstroke, abuilder, |
| abuilder->attachColor(jstroke, "c"))); |
| } |
| |
| sk_sp<sksg::PaintNode> AttachGradientStroke(const skjson::ObjectValue& jstroke, |
| const AnimationBuilder* abuilder) { |
| return AttachStroke(jstroke, abuilder, AttachPaint(jstroke, abuilder, |
| AttachGradient(jstroke, abuilder))); |
| } |
| |
| sk_sp<sksg::Merge> Merge(std::vector<sk_sp<sksg::GeometryNode>>&& geos, sksg::Merge::Mode mode) { |
| std::vector<sksg::Merge::Rec> merge_recs; |
| merge_recs.reserve(geos.size()); |
| |
| for (auto& geo : geos) { |
| merge_recs.push_back( |
| {std::move(geo), merge_recs.empty() ? sksg::Merge::Mode::kMerge : mode}); |
| } |
| |
| return sksg::Merge::Make(std::move(merge_recs)); |
| } |
| |
| std::vector<sk_sp<sksg::GeometryNode>> AttachMergeGeometryEffect( |
| const skjson::ObjectValue& jmerge, const AnimationBuilder*, |
| std::vector<sk_sp<sksg::GeometryNode>>&& geos) { |
| static constexpr sksg::Merge::Mode gModes[] = { |
| sksg::Merge::Mode::kMerge, // "mm": 1 |
| sksg::Merge::Mode::kUnion, // "mm": 2 |
| sksg::Merge::Mode::kDifference, // "mm": 3 |
| sksg::Merge::Mode::kIntersect, // "mm": 4 |
| sksg::Merge::Mode::kXOR , // "mm": 5 |
| }; |
| |
| const auto mode = gModes[SkTMin<size_t>(ParseDefault<size_t>(jmerge["mm"], 1) - 1, |
| SK_ARRAY_COUNT(gModes) - 1)]; |
| |
| std::vector<sk_sp<sksg::GeometryNode>> merged; |
| merged.push_back(Merge(std::move(geos), mode)); |
| |
| return merged; |
| } |
| |
| std::vector<sk_sp<sksg::GeometryNode>> AttachTrimGeometryEffect( |
| const skjson::ObjectValue& jtrim, const AnimationBuilder* abuilder, |
| std::vector<sk_sp<sksg::GeometryNode>>&& geos) { |
| enum class Mode { |
| kParallel, // "m": 1 (Trim Multiple Shapes: Simultaneously) |
| kSerial, // "m": 2 (Trim Multiple Shapes: Individually) |
| } gModes[] = {Mode::kParallel, Mode::kSerial}; |
| |
| const auto mode = gModes[SkTMin<size_t>(ParseDefault<size_t>(jtrim["m"], 1) - 1, |
| SK_ARRAY_COUNT(gModes) - 1)]; |
| |
| std::vector<sk_sp<sksg::GeometryNode>> inputs; |
| if (mode == Mode::kSerial) { |
| inputs.push_back(Merge(std::move(geos), sksg::Merge::Mode::kMerge)); |
| } else { |
| inputs = std::move(geos); |
| } |
| |
| std::vector<sk_sp<sksg::GeometryNode>> trimmed; |
| trimmed.reserve(inputs.size()); |
| for (const auto& i : inputs) { |
| auto trimEffect = sksg::TrimEffect::Make(i); |
| trimmed.push_back(trimEffect); |
| |
| const auto adapter = sk_make_sp<TrimEffectAdapter>(std::move(trimEffect)); |
| abuilder->bindProperty<ScalarValue>(jtrim["s"], |
| [adapter](const ScalarValue& s) { |
| adapter->setStart(s); |
| }); |
| abuilder->bindProperty<ScalarValue>(jtrim["e"], |
| [adapter](const ScalarValue& e) { |
| adapter->setEnd(e); |
| }); |
| abuilder->bindProperty<ScalarValue>(jtrim["o"], |
| [adapter](const ScalarValue& o) { |
| adapter->setOffset(o); |
| }); |
| } |
| |
| return trimmed; |
| } |
| |
| std::vector<sk_sp<sksg::GeometryNode>> AttachRoundGeometryEffect( |
| const skjson::ObjectValue& jtrim, const AnimationBuilder* abuilder, |
| std::vector<sk_sp<sksg::GeometryNode>>&& geos) { |
| |
| std::vector<sk_sp<sksg::GeometryNode>> rounded; |
| rounded.reserve(geos.size()); |
| |
| for (auto& g : geos) { |
| const auto roundEffect = sksg::RoundEffect::Make(std::move(g)); |
| rounded.push_back(roundEffect); |
| |
| abuilder->bindProperty<ScalarValue>(jtrim["r"], |
| [roundEffect](const ScalarValue& r) { |
| roundEffect->setRadius(r); |
| }); |
| } |
| |
| return rounded; |
| } |
| |
| std::vector<sk_sp<sksg::RenderNode>> AttachRepeaterDrawEffect( |
| const skjson::ObjectValue& jrepeater, |
| const AnimationBuilder* abuilder, |
| std::vector<sk_sp<sksg::RenderNode>>&& draws) { |
| |
| std::vector<sk_sp<sksg::RenderNode>> repeater_draws; |
| |
| if (const skjson::ObjectValue* jtransform = jrepeater["tr"]) { |
| sk_sp<sksg::RenderNode> repeater_node; |
| if (draws.size() > 1) { |
| repeater_node = sksg::Group::Make(std::move(draws)); |
| } else { |
| repeater_node = std::move(draws[0]); |
| } |
| |
| const auto repeater_composite = (ParseDefault(jrepeater["m"], 1) == 1) |
| ? RepeaterAdapter::Composite::kAbove |
| : RepeaterAdapter::Composite::kBelow; |
| |
| auto adapter = sk_make_sp<RepeaterAdapter>(std::move(repeater_node), |
| repeater_composite); |
| |
| abuilder->bindProperty<ScalarValue>(jrepeater["c"], |
| [adapter](const ScalarValue& c) { |
| adapter->setCount(c); |
| }); |
| abuilder->bindProperty<ScalarValue>(jrepeater["o"], |
| [adapter](const ScalarValue& o) { |
| adapter->setOffset(o); |
| }); |
| abuilder->bindProperty<VectorValue>((*jtransform)["a"], |
| [adapter](const VectorValue& a) { |
| adapter->setAnchorPoint(ValueTraits<VectorValue>::As<SkPoint>(a)); |
| }); |
| abuilder->bindProperty<VectorValue>((*jtransform)["p"], |
| [adapter](const VectorValue& p) { |
| adapter->setPosition(ValueTraits<VectorValue>::As<SkPoint>(p)); |
| }); |
| abuilder->bindProperty<VectorValue>((*jtransform)["s"], |
| [adapter](const VectorValue& s) { |
| adapter->setScale(ValueTraits<VectorValue>::As<SkVector>(s)); |
| }); |
| abuilder->bindProperty<ScalarValue>((*jtransform)["r"], |
| [adapter](const ScalarValue& r) { |
| adapter->setRotation(r); |
| }); |
| abuilder->bindProperty<ScalarValue>((*jtransform)["so"], |
| [adapter](const ScalarValue& so) { |
| adapter->setStartOpacity(so); |
| }); |
| abuilder->bindProperty<ScalarValue>((*jtransform)["eo"], |
| [adapter](const ScalarValue& eo) { |
| adapter->setEndOpacity(eo); |
| }); |
| |
| repeater_draws.reserve(1); |
| repeater_draws.push_back(adapter->root()); |
| } else { |
| repeater_draws = std::move(draws); |
| } |
| |
| return repeater_draws; |
| } |
| |
| using GeometryAttacherT = sk_sp<sksg::GeometryNode> (*)(const skjson::ObjectValue&, |
| const AnimationBuilder*); |
| static constexpr GeometryAttacherT gGeometryAttachers[] = { |
| AttachPathGeometry, |
| AttachRRectGeometry, |
| AttachEllipseGeometry, |
| AttachPolystarGeometry, |
| }; |
| |
| using PaintAttacherT = sk_sp<sksg::PaintNode> (*)(const skjson::ObjectValue&, |
| const AnimationBuilder*); |
| static constexpr PaintAttacherT gPaintAttachers[] = { |
| AttachColorFill, |
| AttachColorStroke, |
| AttachGradientFill, |
| AttachGradientStroke, |
| }; |
| |
| using GeometryEffectAttacherT = |
| std::vector<sk_sp<sksg::GeometryNode>> (*)(const skjson::ObjectValue&, |
| const AnimationBuilder*, |
| std::vector<sk_sp<sksg::GeometryNode>>&&); |
| static constexpr GeometryEffectAttacherT gGeometryEffectAttachers[] = { |
| AttachMergeGeometryEffect, |
| AttachTrimGeometryEffect, |
| AttachRoundGeometryEffect, |
| }; |
| |
| using DrawEffectAttacherT = |
| std::vector<sk_sp<sksg::RenderNode>> (*)(const skjson::ObjectValue&, |
| const AnimationBuilder*, |
| std::vector<sk_sp<sksg::RenderNode>>&&); |
| |
| static constexpr DrawEffectAttacherT gDrawEffectAttachers[] = { |
| AttachRepeaterDrawEffect, |
| }; |
| |
| enum class ShapeType { |
| kGeometry, |
| kGeometryEffect, |
| kPaint, |
| kGroup, |
| kTransform, |
| kDrawEffect, |
| }; |
| |
| struct ShapeInfo { |
| const char* fTypeString; |
| ShapeType fShapeType; |
| uint32_t fAttacherIndex; // index into respective attacher tables |
| }; |
| |
| const ShapeInfo* FindShapeInfo(const skjson::ObjectValue& jshape) { |
| static constexpr ShapeInfo gShapeInfo[] = { |
| { "el", ShapeType::kGeometry , 2 }, // ellipse -> AttachEllipseGeometry |
| { "fl", ShapeType::kPaint , 0 }, // fill -> AttachColorFill |
| { "gf", ShapeType::kPaint , 2 }, // gfill -> AttachGradientFill |
| { "gr", ShapeType::kGroup , 0 }, // group -> Inline handler |
| { "gs", ShapeType::kPaint , 3 }, // gstroke -> AttachGradientStroke |
| { "mm", ShapeType::kGeometryEffect, 0 }, // merge -> AttachMergeGeometryEffect |
| { "rc", ShapeType::kGeometry , 1 }, // rrect -> AttachRRectGeometry |
| { "rd", ShapeType::kGeometryEffect, 2 }, // round -> AttachRoundGeometryEffect |
| { "rp", ShapeType::kDrawEffect , 0 }, // repeater -> AttachRepeaterDrawEffect |
| { "sh", ShapeType::kGeometry , 0 }, // shape -> AttachPathGeometry |
| { "sr", ShapeType::kGeometry , 3 }, // polystar -> AttachPolyStarGeometry |
| { "st", ShapeType::kPaint , 1 }, // stroke -> AttachColorStroke |
| { "tm", ShapeType::kGeometryEffect, 1 }, // trim -> AttachTrimGeometryEffect |
| { "tr", ShapeType::kTransform , 0 }, // transform -> Inline handler |
| }; |
| |
| const skjson::StringValue* type = jshape["ty"]; |
| if (!type) { |
| return nullptr; |
| } |
| |
| const auto* info = bsearch(type->begin(), |
| gShapeInfo, |
| SK_ARRAY_COUNT(gShapeInfo), |
| sizeof(ShapeInfo), |
| [](const void* key, const void* info) { |
| return strcmp(static_cast<const char*>(key), |
| static_cast<const ShapeInfo*>(info)->fTypeString); |
| }); |
| |
| return static_cast<const ShapeInfo*>(info); |
| } |
| |
| struct GeometryEffectRec { |
| const skjson::ObjectValue& fJson; |
| GeometryEffectAttacherT fAttach; |
| }; |
| |
| } // namespace |
| |
| struct AnimationBuilder::AttachShapeContext { |
| AttachShapeContext(std::vector<sk_sp<sksg::GeometryNode>>* geos, |
| std::vector<GeometryEffectRec>* effects, |
| size_t committedAnimators) |
| : fGeometryStack(geos) |
| , fGeometryEffectStack(effects) |
| , fCommittedAnimators(committedAnimators) {} |
| |
| std::vector<sk_sp<sksg::GeometryNode>>* fGeometryStack; |
| std::vector<GeometryEffectRec>* fGeometryEffectStack; |
| size_t fCommittedAnimators; |
| }; |
| |
| sk_sp<sksg::RenderNode> AnimationBuilder::attachShape(const skjson::ArrayValue* jshape, |
| AttachShapeContext* ctx) const { |
| if (!jshape) |
| return nullptr; |
| |
| SkDEBUGCODE(const auto initialGeometryEffects = ctx->fGeometryEffectStack->size();) |
| |
| const skjson::ObjectValue* jtransform = nullptr; |
| |
| struct ShapeRec { |
| const skjson::ObjectValue& fJson; |
| const ShapeInfo& fInfo; |
| }; |
| |
| // First pass (bottom->top): |
| // |
| // * pick up the group transform and opacity |
| // * push local geometry effects onto the stack |
| // * store recs for next pass |
| // |
| std::vector<ShapeRec> recs; |
| for (size_t i = 0; i < jshape->size(); ++i) { |
| const skjson::ObjectValue* shape = (*jshape)[jshape->size() - 1 - i]; |
| if (!shape) continue; |
| |
| const auto* info = FindShapeInfo(*shape); |
| if (!info) { |
| this->log(Logger::Level::kError, &(*shape)["ty"], "Unknown shape."); |
| continue; |
| } |
| |
| if (ParseDefault<bool>((*shape)["hd"], false)) { |
| // Ignore hidden shapes. |
| continue; |
| } |
| |
| recs.push_back({ *shape, *info }); |
| |
| switch (info->fShapeType) { |
| case ShapeType::kTransform: |
| // Just track the transform property for now -- we'll deal with it later. |
| jtransform = shape; |
| break; |
| case ShapeType::kGeometryEffect: |
| SkASSERT(info->fAttacherIndex < SK_ARRAY_COUNT(gGeometryEffectAttachers)); |
| ctx->fGeometryEffectStack->push_back( |
| { *shape, gGeometryEffectAttachers[info->fAttacherIndex] }); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| // Second pass (top -> bottom, after 2x reverse): |
| // |
| // * track local geometry |
| // * emit local paints |
| // |
| std::vector<sk_sp<sksg::GeometryNode>> geos; |
| std::vector<sk_sp<sksg::RenderNode >> draws; |
| |
| const auto add_draw = [this, &draws](sk_sp<sksg::RenderNode> draw, const ShapeRec& rec) { |
| // All draws can have an optional blend mode. |
| draws.push_back(this->attachBlendMode(rec.fJson, std::move(draw))); |
| }; |
| |
| for (auto rec = recs.rbegin(); rec != recs.rend(); ++rec) { |
| const AutoPropertyTracker apt(this, rec->fJson); |
| |
| switch (rec->fInfo.fShapeType) { |
| case ShapeType::kGeometry: { |
| SkASSERT(rec->fInfo.fAttacherIndex < SK_ARRAY_COUNT(gGeometryAttachers)); |
| if (auto geo = gGeometryAttachers[rec->fInfo.fAttacherIndex](rec->fJson, this)) { |
| geos.push_back(std::move(geo)); |
| } |
| } break; |
| case ShapeType::kGeometryEffect: { |
| // Apply the current effect and pop from the stack. |
| SkASSERT(rec->fInfo.fAttacherIndex < SK_ARRAY_COUNT(gGeometryEffectAttachers)); |
| if (!geos.empty()) { |
| geos = gGeometryEffectAttachers[rec->fInfo.fAttacherIndex](rec->fJson, |
| this, |
| std::move(geos)); |
| } |
| |
| SkASSERT(&ctx->fGeometryEffectStack->back().fJson == &rec->fJson); |
| SkASSERT(ctx->fGeometryEffectStack->back().fAttach == |
| gGeometryEffectAttachers[rec->fInfo.fAttacherIndex]); |
| ctx->fGeometryEffectStack->pop_back(); |
| } break; |
| case ShapeType::kGroup: { |
| AttachShapeContext groupShapeCtx(&geos, |
| ctx->fGeometryEffectStack, |
| ctx->fCommittedAnimators); |
| if (auto subgroup = this->attachShape(rec->fJson["it"], &groupShapeCtx)) { |
| add_draw(std::move(subgroup), *rec); |
| SkASSERT(groupShapeCtx.fCommittedAnimators >= ctx->fCommittedAnimators); |
| ctx->fCommittedAnimators = groupShapeCtx.fCommittedAnimators; |
| } |
| } break; |
| case ShapeType::kPaint: { |
| SkASSERT(rec->fInfo.fAttacherIndex < SK_ARRAY_COUNT(gPaintAttachers)); |
| auto paint = gPaintAttachers[rec->fInfo.fAttacherIndex](rec->fJson, this); |
| if (!paint || geos.empty()) |
| break; |
| |
| auto drawGeos = geos; |
| |
| // Apply all pending effects from the stack. |
| for (auto it = ctx->fGeometryEffectStack->rbegin(); |
| it != ctx->fGeometryEffectStack->rend(); ++it) { |
| drawGeos = it->fAttach(it->fJson, this, std::move(drawGeos)); |
| } |
| |
| // If we still have multiple geos, reduce using 'merge'. |
| auto geo = drawGeos.size() > 1 |
| ? Merge(std::move(drawGeos), sksg::Merge::Mode::kMerge) |
| : drawGeos[0]; |
| |
| SkASSERT(geo); |
| add_draw(sksg::Draw::Make(std::move(geo), std::move(paint)), *rec); |
| ctx->fCommittedAnimators = fCurrentAnimatorScope->size(); |
| } break; |
| case ShapeType::kDrawEffect: { |
| SkASSERT(rec->fInfo.fAttacherIndex < SK_ARRAY_COUNT(gDrawEffectAttachers)); |
| if (!draws.empty()) { |
| draws = gDrawEffectAttachers[rec->fInfo.fAttacherIndex](rec->fJson, |
| this, |
| std::move(draws)); |
| ctx->fCommittedAnimators = fCurrentAnimatorScope->size(); |
| } |
| } break; |
| default: |
| break; |
| } |
| } |
| |
| // By now we should have popped all local geometry effects. |
| SkASSERT(ctx->fGeometryEffectStack->size() == initialGeometryEffects); |
| |
| sk_sp<sksg::RenderNode> shape_wrapper; |
| if (draws.size() == 1) { |
| // For a single draw, we don't need a group. |
| shape_wrapper = std::move(draws.front()); |
| } else if (!draws.empty()) { |
| // Emit local draws reversed (bottom->top, per spec). |
| std::reverse(draws.begin(), draws.end()); |
| draws.shrink_to_fit(); |
| |
| // We need a group to dispatch multiple draws. |
| shape_wrapper = sksg::Group::Make(std::move(draws)); |
| } |
| |
| sk_sp<sksg::Transform> shape_transform; |
| if (jtransform) { |
| const AutoPropertyTracker apt(this, *jtransform); |
| |
| // This is tricky due to the interaction with ctx->fCommittedAnimators: we want any |
| // animators related to tranform/opacity to be committed => they must be inserted in front |
| // of the dangling/uncommitted ones. |
| AutoScope ascope(this); |
| |
| if ((shape_transform = this->attachMatrix2D(*jtransform, nullptr))) { |
| shape_wrapper = sksg::TransformEffect::Make(std::move(shape_wrapper), shape_transform); |
| } |
| shape_wrapper = this->attachOpacity(*jtransform, std::move(shape_wrapper)); |
| |
| auto local_scope = ascope.release(); |
| fCurrentAnimatorScope->insert(fCurrentAnimatorScope->begin() + ctx->fCommittedAnimators, |
| std::make_move_iterator(local_scope.begin()), |
| std::make_move_iterator(local_scope.end())); |
| ctx->fCommittedAnimators += local_scope.size(); |
| } |
| |
| // Push transformed local geometries to parent list, for subsequent paints. |
| for (auto& geo : geos) { |
| ctx->fGeometryStack->push_back(shape_transform |
| ? sksg::GeometryTransform::Make(std::move(geo), shape_transform) |
| : std::move(geo)); |
| } |
| |
| return shape_wrapper; |
| } |
| |
| sk_sp<sksg::RenderNode> AnimationBuilder::attachShapeLayer(const skjson::ObjectValue& layer, |
| LayerInfo*) const { |
| std::vector<sk_sp<sksg::GeometryNode>> geometryStack; |
| std::vector<GeometryEffectRec> geometryEffectStack; |
| AttachShapeContext shapeCtx(&geometryStack, &geometryEffectStack, |
| fCurrentAnimatorScope->size()); |
| auto shapeNode = this->attachShape(layer["shapes"], &shapeCtx); |
| |
| // Trim uncommitted animators: AttachShape consumes effects on the fly, and greedily attaches |
| // geometries => at the end, we can end up with unused geometries, which are nevertheless alive |
| // due to attached animators. To avoid this, we track committed animators and discard the |
| // orphans here. |
| SkASSERT(shapeCtx.fCommittedAnimators <= fCurrentAnimatorScope->size()); |
| fCurrentAnimatorScope->resize(shapeCtx.fCommittedAnimators); |
| |
| return shapeNode; |
| } |
| |
| } // namespace internal |
| } // namespace skottie |
