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https://github.com/thorvg/thorvg.git
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5b89479963
Each group must determine the stroking rendering contexts and assess whether context switching has occurred. Migrate the sequence from the root layer to all groups.
1167 lines
40 KiB
C++
1167 lines
40 KiB
C++
/*
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* Copyright (c) 2023 - 2024 the ThorVG project. All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <cstring>
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#include "tvgCommon.h"
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#include "tvgPaint.h"
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#include "tvgShape.h"
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#include "tvgInlist.h"
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#include "tvgLottieModel.h"
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#include "tvgLottieBuilder.h"
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#include "tvgTaskScheduler.h"
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/************************************************************************/
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/* Internal Class Implementation */
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/************************************************************************/
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struct RenderRepeater
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{
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int cnt;
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float offset;
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Point position;
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Point anchor;
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Point scale;
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float rotation;
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uint8_t startOpacity;
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uint8_t endOpacity;
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bool interpOpacity;
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bool inorder;
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};
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struct RenderContext
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{
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INLIST_ITEM(RenderContext);
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Shape* propagator = nullptr;
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Shape* merging = nullptr; //merging shapes if possible (if shapes have same properties)
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LottieObject** begin = nullptr; //iteration entry point
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RenderRepeater* repeater = nullptr;
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float roundness = 0.0f;
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bool stroking = false; //context has been separated by the stroking
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bool reqFragment = false; //requirment to fragment the render context
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bool allowMerging = true; //individual trimpath doesn't allow merging shapes
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RenderContext()
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{
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propagator = Shape::gen().release();
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}
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~RenderContext()
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{
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delete(propagator);
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delete(repeater);
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}
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RenderContext(const RenderContext& rhs)
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{
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propagator = static_cast<Shape*>(rhs.propagator->duplicate());
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if (rhs.repeater) {
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repeater = new RenderRepeater();
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*repeater = *rhs.repeater;
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}
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roundness = rhs.roundness;
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}
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};
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static void _updateChildren(LottieGroup* parent, float frameNo, Inlist<RenderContext>& contexts);
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static void _updateLayer(LottieLayer* root, LottieLayer* layer, float frameNo);
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static bool _buildComposition(LottieComposition* comp, LottieGroup* parent);
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static void _rotateX(Matrix* m, float degree)
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{
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if (degree == 0.0f) return;
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auto radian = degree / 180.0f * M_PI;
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m->e22 *= cosf(radian);
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}
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static void _rotateY(Matrix* m, float degree)
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{
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if (degree == 0.0f) return;
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auto radian = degree / 180.0f * M_PI;
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m->e11 *= cosf(radian);
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}
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static void _rotationZ(Matrix* m, float degree)
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{
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if (degree == 0.0f) return;
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auto radian = degree / 180.0f * M_PI;
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m->e11 = cosf(radian);
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m->e12 = -sinf(radian);
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m->e21 = sinf(radian);
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m->e22 = cosf(radian);
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}
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static bool _updateTransform(LottieTransform* transform, float frameNo, bool autoOrient, Matrix& matrix, uint8_t& opacity)
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{
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mathIdentity(&matrix);
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if (!transform) {
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opacity = 255;
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return false;
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}
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if (transform->coords) {
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mathTranslate(&matrix, transform->coords->x(frameNo), transform->coords->y(frameNo));
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} else {
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auto position = transform->position(frameNo);
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mathTranslate(&matrix, position.x, position.y);
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}
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auto angle = 0.0f;
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if (autoOrient) angle = transform->position.angle(frameNo);
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_rotationZ(&matrix, transform->rotation(frameNo) + angle);
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if (transform->rotationEx) {
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_rotateY(&matrix, transform->rotationEx->y(frameNo));
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_rotateX(&matrix, transform->rotationEx->x(frameNo));
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}
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auto scale = transform->scale(frameNo);
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mathScaleR(&matrix, scale.x * 0.01f, scale.y * 0.01f);
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//Lottie specific anchor transform.
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auto anchor = transform->anchor(frameNo);
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mathTranslateR(&matrix, -anchor.x, -anchor.y);
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//invisible just in case.
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if (scale.x == 0.0f || scale.y == 0.0f) opacity = 0;
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else opacity = transform->opacity(frameNo);
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return true;
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}
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static void _updateTransform(LottieLayer* layer, float frameNo)
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{
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if (!layer || mathEqual(layer->cache.frameNo, frameNo)) return;
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auto transform = layer->transform;
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auto parent = layer->parent;
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if (parent) _updateTransform(parent, frameNo);
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auto& matrix = layer->cache.matrix;
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_updateTransform(transform, frameNo, layer->autoOrient, matrix, layer->cache.opacity);
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if (parent) {
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if (!mathIdentity((const Matrix*) &parent->cache.matrix)) {
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if (mathIdentity((const Matrix*) &matrix)) layer->cache.matrix = parent->cache.matrix;
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else layer->cache.matrix = mathMultiply(&parent->cache.matrix, &matrix);
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}
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}
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layer->cache.frameNo = frameNo;
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}
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static void _updateTransform(TVG_UNUSED LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, RenderContext* ctx)
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{
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auto transform = static_cast<LottieTransform*>(*child);
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if (!transform) return;
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ctx->merging = nullptr;
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Matrix matrix;
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uint8_t opacity;
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if (!_updateTransform(transform, frameNo, false, matrix, opacity)) return;
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auto pmatrix = PP(ctx->propagator)->transform();
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ctx->propagator->transform(pmatrix ? mathMultiply(pmatrix, &matrix) : matrix);
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ctx->propagator->opacity(MULTIPLY(opacity, PP(ctx->propagator)->opacity));
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//FIXME: preserve the stroke width. too workaround, need a better design.
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if (P(ctx->propagator)->rs.strokeWidth() > 0.0f) {
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auto denominator = sqrtf(matrix.e11 * matrix.e11 + matrix.e12 * matrix.e12);
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if (denominator > 1.0f) ctx->propagator->stroke(ctx->propagator->strokeWidth() / denominator);
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}
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}
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static void _updateGroup(LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& pcontexts, RenderContext* ctx)
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{
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auto group = static_cast<LottieGroup*>(*child);
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if (group->children.empty()) return;
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//Prepare render data
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group->scene = parent->scene;
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Inlist<RenderContext> contexts;
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contexts.back(new RenderContext(*ctx));
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_updateChildren(group, frameNo, contexts);
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contexts.free();
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}
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static void _updateStroke(LottieStroke* stroke, float frameNo, RenderContext* ctx)
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{
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ctx->propagator->stroke(stroke->width(frameNo));
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ctx->propagator->stroke(stroke->cap);
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ctx->propagator->stroke(stroke->join);
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ctx->propagator->strokeMiterlimit(stroke->miterLimit);
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if (stroke->dashattr) {
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float dashes[2];
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dashes[0] = stroke->dashSize(frameNo);
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dashes[1] = dashes[0] + stroke->dashGap(frameNo);
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P(ctx->propagator)->strokeDash(dashes, 2, stroke->dashOffset(frameNo));
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} else {
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ctx->propagator->stroke(nullptr, 0);
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}
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}
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static bool _fragmentedStroking(LottieObject** child, Inlist<RenderContext>& contexts, RenderContext* ctx)
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{
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if (!ctx->reqFragment) return false;
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if (ctx->stroking) return true;
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contexts.back(new RenderContext(*ctx));
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auto fragment = contexts.tail;
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fragment->propagator->stroke(0.0f);
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fragment->begin = child - 1;
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ctx->stroking = true;
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return false;
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}
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static void _updateSolidStroke(TVG_UNUSED LottieGroup* parent, LottieObject** child, float frameNo, Inlist<RenderContext>& contexts, RenderContext* ctx)
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{
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if (_fragmentedStroking(child, contexts, ctx)) return;
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auto stroke = static_cast<LottieSolidStroke*>(*child);
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ctx->merging = nullptr;
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auto color = stroke->color(frameNo);
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ctx->propagator->stroke(color.rgb[0], color.rgb[1], color.rgb[2], stroke->opacity(frameNo));
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_updateStroke(static_cast<LottieStroke*>(stroke), frameNo, ctx);
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}
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static void _updateGradientStroke(TVG_UNUSED LottieGroup* parent, LottieObject** child, float frameNo, Inlist<RenderContext>& contexts, RenderContext* ctx)
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{
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if (_fragmentedStroking(child, contexts, ctx)) return;
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auto stroke = static_cast<LottieGradientStroke*>(*child);
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ctx->merging = nullptr;
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ctx->propagator->stroke(unique_ptr<Fill>(stroke->fill(frameNo)));
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_updateStroke(static_cast<LottieStroke*>(stroke), frameNo, ctx);
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}
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static void _updateSolidFill(TVG_UNUSED LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, RenderContext* ctx)
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{
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if (ctx->stroking) return;
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auto fill = static_cast<LottieSolidFill*>(*child);
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ctx->merging = nullptr;
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auto color = fill->color(frameNo);
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ctx->propagator->fill(color.rgb[0], color.rgb[1], color.rgb[2], fill->opacity(frameNo));
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ctx->propagator->fill(fill->rule);
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if (ctx->propagator->strokeWidth() > 0) ctx->propagator->order(true);
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}
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static Shape* _updateGradientFill(TVG_UNUSED LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, RenderContext* ctx)
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{
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if (ctx->stroking) return nullptr;
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auto fill = static_cast<LottieGradientFill*>(*child);
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ctx->merging = nullptr;
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//TODO: reuse the fill instance?
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ctx->propagator->fill(unique_ptr<Fill>(fill->fill(frameNo)));
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ctx->propagator->fill(fill->rule);
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ctx->propagator->opacity(MULTIPLY(fill->opacity(frameNo), PP(ctx->propagator)->opacity));
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if (ctx->propagator->strokeWidth() > 0) ctx->propagator->order(true);
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return nullptr;
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}
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static Shape* _draw(LottieGroup* parent, RenderContext* ctx)
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{
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if (ctx->allowMerging && ctx->merging) return ctx->merging;
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auto shape = cast<Shape>(ctx->propagator->duplicate());
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ctx->merging = shape.get();
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parent->scene->push(std::move(shape));
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return ctx->merging;
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}
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//OPTIMIZE: path?
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static void _repeat(LottieGroup* parent, unique_ptr<Shape> path, RenderContext* ctx)
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{
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auto repeater = ctx->repeater;
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Array<Shape*> shapes(repeater->cnt);
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for (int i = 0; i < repeater->cnt; ++i) {
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auto multiplier = repeater->offset + static_cast<float>(i);
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auto shape = static_cast<Shape*>(ctx->propagator->duplicate());
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P(shape)->rs.path = P(path.get())->rs.path;
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auto opacity = repeater->interpOpacity ? mathLerp<uint8_t>(repeater->startOpacity, repeater->endOpacity, static_cast<float>(i + 1) / repeater->cnt) : repeater->startOpacity;
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shape->opacity(opacity);
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Matrix m;
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mathIdentity(&m);
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mathTranslate(&m, repeater->position.x * multiplier + repeater->anchor.x, repeater->position.y * multiplier + repeater->anchor.y);
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mathScale(&m, powf(repeater->scale.x * 0.01f, multiplier), powf(repeater->scale.y * 0.01f, multiplier));
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mathRotate(&m, repeater->rotation * multiplier);
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mathTranslateR(&m, -repeater->anchor.x, -repeater->anchor.y);
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auto pm = PP(shape)->transform();
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shape->transform(pm ? mathMultiply(&m, pm) : m);
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if (ctx->roundness > 1.0f && P(shape)->rs.stroke) {
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TVGERR("LOTTIE", "FIXME: Path roundesss should be applied properly!");
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P(shape)->rs.stroke->join = StrokeJoin::Round;
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}
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shapes.push(shape);
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}
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//push repeat shapes in order.
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if (repeater->inorder) {
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for (auto shape = shapes.data; shape < shapes.end(); ++shape) {
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parent->scene->push(cast(*shape));
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}
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} else {
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for (auto shape = shapes.end() - 1; shape >= shapes.data; --shape) {
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parent->scene->push(cast(*shape));
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}
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}
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}
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static void _updateRect(LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, RenderContext* ctx)
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{
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auto rect= static_cast<LottieRect*>(*child);
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auto position = rect->position(frameNo);
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auto size = rect->size(frameNo);
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auto roundness = rect->radius(frameNo);
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if (ctx->roundness > roundness) roundness = ctx->roundness;
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if (roundness > 0.0f) {
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if (roundness > size.x * 0.5f) roundness = size.x * 0.5f;
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if (roundness > size.y * 0.5f) roundness = size.y * 0.5f;
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}
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if (ctx->repeater) {
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auto path = Shape::gen();
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path->appendRect(position.x - size.x * 0.5f, position.y - size.y * 0.5f, size.x, size.y, roundness, roundness);
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_repeat(parent, std::move(path), ctx);
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} else {
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auto merging = _draw(parent, ctx);
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merging->appendRect(position.x - size.x * 0.5f, position.y - size.y * 0.5f, size.x, size.y, roundness, roundness);
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}
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}
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static void _updateEllipse(LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, RenderContext* ctx)
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{
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auto ellipse= static_cast<LottieEllipse*>(*child);
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auto position = ellipse->position(frameNo);
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auto size = ellipse->size(frameNo);
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if (ctx->repeater) {
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auto path = Shape::gen();
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path->appendCircle(position.x, position.y, size.x * 0.5f, size.y * 0.5f);
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_repeat(parent, std::move(path), ctx);
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} else {
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auto merging = _draw(parent, ctx);
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merging->appendCircle(position.x, position.y, size.x * 0.5f, size.y * 0.5f);
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}
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}
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static void _updatePath(LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, RenderContext* ctx)
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{
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auto path = static_cast<LottiePath*>(*child);
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if (ctx->repeater) {
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auto p = Shape::gen();
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path->pathset(frameNo, P(p)->rs.path.cmds, P(p)->rs.path.pts);
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_repeat(parent, std::move(p), ctx);
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} else {
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auto merging = _draw(parent, ctx);
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if (path->pathset(frameNo, P(merging)->rs.path.cmds, P(merging)->rs.path.pts)) {
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P(merging)->update(RenderUpdateFlag::Path);
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}
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if (ctx->roundness > 1.0f && P(merging)->rs.stroke) {
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TVGERR("LOTTIE", "FIXME: Path roundesss should be applied properly!");
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P(merging)->rs.stroke->join = StrokeJoin::Round;
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}
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}
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}
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static void _updateText(LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, TVG_UNUSED RenderContext* ctx)
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{
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auto text = static_cast<LottieText*>(*child);
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auto& doc = text->doc(frameNo);
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auto p = doc.text;
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if (!p || !text->font) return;
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auto scale = doc.size * 0.01f;
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float spacing = text->spacing(frameNo) / scale;
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Point cursor = {0.0f, 0.0f};
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auto scene = Scene::gen();
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//text string
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while (*p != '\0') {
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//find the glyph
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for (auto g = text->font->chars.data; g < text->font->chars.end(); ++g) {
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auto glyph = *g;
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//draw matched glyphs
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if (!strncmp(glyph->code, p, glyph->len)) {
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//TODO: caching?
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auto shape = Shape::gen();
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for (auto g = glyph->children.data; g < glyph->children.end(); ++g) {
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auto group = static_cast<LottieGroup*>(*g);
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for (auto p = group->children.data; p < group->children.end(); ++p) {
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if (static_cast<LottiePath*>(*p)->pathset(frameNo, P(shape)->rs.path.cmds, P(shape)->rs.path.pts)) {
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P(shape)->update(RenderUpdateFlag::Path);
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}
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}
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}
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shape->fill(doc.color.rgb[0], doc.color.rgb[1], doc.color.rgb[2]);
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shape->translate(cursor.x, cursor.y);
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if (doc.stroke.render) {
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shape->stroke(StrokeJoin::Round);
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shape->stroke(doc.stroke.width / scale);
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shape->stroke(doc.stroke.color.rgb[0], doc.stroke.color.rgb[1], doc.stroke.color.rgb[2]);
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}
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scene->push(std::move(shape));
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p += glyph->len;
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//end of text, new line of the cursor position
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if (*p == 13 || *p == 3) {
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cursor.x = 0.0f;
|
|
cursor.y += (doc.height / scale);
|
|
++p;
|
|
//advance the cursor position horizontally
|
|
} else {
|
|
cursor.x += glyph->width + spacing;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
//text layout position
|
|
Point layout = {doc.bbox.pos.x, (doc.bbox.pos.y * 0.5f) - doc.shift};
|
|
|
|
//adjust the layout
|
|
if (doc.justify == 1) layout.x -= (cursor.x * scale); //right aligned
|
|
else if (doc.justify == 2) layout.x -= (cursor.x * 0.5f * scale); //center aligned
|
|
|
|
scene->translate(layout.x, layout.y);
|
|
scene->scale(scale);
|
|
|
|
parent->scene->push(std::move(scene));
|
|
}
|
|
|
|
|
|
static void _updateStar(LottieGroup* parent, LottiePolyStar* star, Matrix* transform, float frameNo, Shape* merging)
|
|
{
|
|
static constexpr auto POLYSTAR_MAGIC_NUMBER = 0.47829f / 0.28f;
|
|
|
|
auto ptsCnt = star->ptsCnt(frameNo);
|
|
auto innerRadius = star->innerRadius(frameNo);
|
|
auto outerRadius = star->outerRadius(frameNo);
|
|
auto innerRoundness = star->innerRoundness(frameNo) * 0.01f;
|
|
auto outerRoundness = star->outerRoundness(frameNo) * 0.01f;
|
|
|
|
auto angle = -90.0f * MATH_PI / 180.0f;
|
|
auto partialPointRadius = 0.0f;
|
|
auto anglePerPoint = (2.0f * MATH_PI / ptsCnt);
|
|
auto halfAnglePerPoint = anglePerPoint * 0.5f;
|
|
auto partialPointAmount = ptsCnt - floorf(ptsCnt);
|
|
auto longSegment = false;
|
|
auto numPoints = size_t(ceilf(ptsCnt) * 2);
|
|
auto direction = star->cw ? 1.0f : -1.0f;
|
|
auto hasRoundness = false;
|
|
|
|
float x, y;
|
|
|
|
if (!mathZero(partialPointAmount)) {
|
|
angle += halfAnglePerPoint * (1.0f - partialPointAmount) * direction;
|
|
}
|
|
|
|
if (!mathZero(partialPointAmount)) {
|
|
partialPointRadius = innerRadius + partialPointAmount * (outerRadius - innerRadius);
|
|
x = partialPointRadius * cosf(angle);
|
|
y = partialPointRadius * sinf(angle);
|
|
angle += anglePerPoint * partialPointAmount * 0.5f * direction;
|
|
} else {
|
|
x = outerRadius * cosf(angle);
|
|
y = outerRadius * sinf(angle);
|
|
angle += halfAnglePerPoint * direction;
|
|
}
|
|
|
|
if (mathZero(innerRoundness) && mathZero(outerRoundness)) {
|
|
P(merging)->rs.path.pts.reserve(numPoints + 2);
|
|
P(merging)->rs.path.cmds.reserve(numPoints + 3);
|
|
} else {
|
|
P(merging)->rs.path.pts.reserve(numPoints * 3 + 2);
|
|
P(merging)->rs.path.cmds.reserve(numPoints + 3);
|
|
hasRoundness = true;
|
|
}
|
|
|
|
Point in = {x, y};
|
|
if (transform) mathTransform(transform, &in);
|
|
merging->moveTo(in.x, in.y);
|
|
|
|
for (size_t i = 0; i < numPoints; i++) {
|
|
auto radius = longSegment ? outerRadius : innerRadius;
|
|
auto dTheta = halfAnglePerPoint;
|
|
if (!mathZero(partialPointRadius) && i == numPoints - 2) {
|
|
dTheta = anglePerPoint * partialPointAmount * 0.5f;
|
|
}
|
|
if (!mathZero(partialPointRadius) && i == numPoints - 1) {
|
|
radius = partialPointRadius;
|
|
}
|
|
auto previousX = x;
|
|
auto previousY = y;
|
|
x = radius * cosf(angle);
|
|
y = radius * sinf(angle);
|
|
|
|
if (hasRoundness) {
|
|
auto cp1Theta = (atan2f(previousY, previousX) - MATH_PI2 * direction);
|
|
auto cp1Dx = cosf(cp1Theta);
|
|
auto cp1Dy = sinf(cp1Theta);
|
|
auto cp2Theta = (atan2f(y, x) - MATH_PI2 * direction);
|
|
auto cp2Dx = cosf(cp2Theta);
|
|
auto cp2Dy = sinf(cp2Theta);
|
|
|
|
auto cp1Roundness = longSegment ? innerRoundness : outerRoundness;
|
|
auto cp2Roundness = longSegment ? outerRoundness : innerRoundness;
|
|
auto cp1Radius = longSegment ? innerRadius : outerRadius;
|
|
auto cp2Radius = longSegment ? outerRadius : innerRadius;
|
|
|
|
auto cp1x = cp1Radius * cp1Roundness * POLYSTAR_MAGIC_NUMBER * cp1Dx / ptsCnt;
|
|
auto cp1y = cp1Radius * cp1Roundness * POLYSTAR_MAGIC_NUMBER * cp1Dy / ptsCnt;
|
|
auto cp2x = cp2Radius * cp2Roundness * POLYSTAR_MAGIC_NUMBER * cp2Dx / ptsCnt;
|
|
auto cp2y = cp2Radius * cp2Roundness * POLYSTAR_MAGIC_NUMBER * cp2Dy / ptsCnt;
|
|
|
|
if (!mathZero(partialPointAmount) && ((i == 0) || (i == numPoints - 1))) {
|
|
cp1x *= partialPointAmount;
|
|
cp1y *= partialPointAmount;
|
|
cp2x *= partialPointAmount;
|
|
cp2y *= partialPointAmount;
|
|
}
|
|
Point in2 = {previousX - cp1x, previousY - cp1y};
|
|
Point in3 = {x + cp2x, y + cp2y};
|
|
Point in4 = {x, y};
|
|
if (transform) {
|
|
mathTransform(transform, &in2);
|
|
mathTransform(transform, &in3);
|
|
mathTransform(transform, &in4);
|
|
}
|
|
merging->cubicTo(in2.x, in2.y, in3.x, in3.y, in4.x, in4.y);
|
|
} else {
|
|
Point in = {x, y};
|
|
if (transform) mathTransform(transform, &in);
|
|
merging->lineTo(in.x, in.y);
|
|
}
|
|
angle += dTheta * direction;
|
|
longSegment = !longSegment;
|
|
}
|
|
merging->close();
|
|
}
|
|
|
|
|
|
static void _updatePolygon(LottieGroup* parent, LottiePolyStar* star, Matrix* transform, float frameNo, Shape* merging)
|
|
{
|
|
static constexpr auto POLYGON_MAGIC_NUMBER = 0.25f;
|
|
|
|
auto ptsCnt = size_t(floor(star->ptsCnt(frameNo)));
|
|
auto radius = star->outerRadius(frameNo);
|
|
auto roundness = star->outerRoundness(frameNo) * 0.01f;
|
|
|
|
auto angle = -90.0f * MATH_PI / 180.0f;
|
|
auto anglePerPoint = 2.0f * MATH_PI / float(ptsCnt);
|
|
auto direction = star->cw ? 1.0f : -1.0f;
|
|
auto hasRoundness = false;
|
|
auto x = radius * cosf(angle);
|
|
auto y = radius * sinf(angle);
|
|
|
|
angle += anglePerPoint * direction;
|
|
|
|
if (mathZero(roundness)) {
|
|
P(merging)->rs.path.pts.reserve(ptsCnt + 2);
|
|
P(merging)->rs.path.cmds.reserve(ptsCnt + 3);
|
|
} else {
|
|
P(merging)->rs.path.pts.reserve(ptsCnt * 3 + 2);
|
|
P(merging)->rs.path.cmds.reserve(ptsCnt + 3);
|
|
hasRoundness = true;
|
|
}
|
|
|
|
Point in = {x, y};
|
|
if (transform) mathTransform(transform, &in);
|
|
merging->moveTo(in.x, in.y);
|
|
|
|
for (size_t i = 0; i < ptsCnt; i++) {
|
|
auto previousX = x;
|
|
auto previousY = y;
|
|
x = (radius * cosf(angle));
|
|
y = (radius * sinf(angle));
|
|
|
|
if (hasRoundness) {
|
|
auto cp1Theta = atan2f(previousY, previousX) - MATH_PI2 * direction;
|
|
auto cp1Dx = cosf(cp1Theta);
|
|
auto cp1Dy = sinf(cp1Theta);
|
|
auto cp2Theta = atan2f(y, x) - MATH_PI2 * direction;
|
|
auto cp2Dx = cosf(cp2Theta);
|
|
auto cp2Dy = sinf(cp2Theta);
|
|
|
|
auto cp1x = radius * roundness * POLYGON_MAGIC_NUMBER * cp1Dx;
|
|
auto cp1y = radius * roundness * POLYGON_MAGIC_NUMBER * cp1Dy;
|
|
auto cp2x = radius * roundness * POLYGON_MAGIC_NUMBER * cp2Dx;
|
|
auto cp2y = radius * roundness * POLYGON_MAGIC_NUMBER * cp2Dy;
|
|
|
|
Point in2 = {previousX - cp1x, previousY - cp1y};
|
|
Point in3 = {x + cp2x, y + cp2y};
|
|
Point in4 = {x, y};
|
|
if (transform) {
|
|
mathTransform(transform, &in2);
|
|
mathTransform(transform, &in3);
|
|
mathTransform(transform, &in4);
|
|
}
|
|
merging->cubicTo(in2.x, in2.y, in3.x, in3.y, in4.x, in4.y);
|
|
} else {
|
|
Point in = {x, y};
|
|
if (transform) mathTransform(transform, &in);
|
|
merging->lineTo(in.x, in.y);
|
|
}
|
|
angle += anglePerPoint * direction;
|
|
}
|
|
merging->close();
|
|
}
|
|
|
|
|
|
static void _updatePolystar(LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, RenderContext* ctx)
|
|
{
|
|
auto star= static_cast<LottiePolyStar*>(*child);
|
|
|
|
//Optimize: Can we skip the individual coords transform?
|
|
Matrix matrix;
|
|
mathIdentity(&matrix);
|
|
auto position = star->position(frameNo);
|
|
mathTranslate(&matrix, position.x, position.y);
|
|
mathRotate(&matrix, star->rotation(frameNo));
|
|
|
|
auto identity = mathIdentity((const Matrix*)&matrix);
|
|
|
|
if (ctx->repeater) {
|
|
auto p = Shape::gen();
|
|
if (star->type == LottiePolyStar::Star) _updateStar(parent, star, identity ? nullptr : &matrix, frameNo, p.get());
|
|
else _updatePolygon(parent, star, identity ? nullptr : &matrix, frameNo, p.get());
|
|
_repeat(parent, std::move(p), ctx);
|
|
} else {
|
|
auto merging = _draw(parent, ctx);
|
|
if (star->type == LottiePolyStar::Star) _updateStar(parent, star, identity ? nullptr : &matrix, frameNo, merging);
|
|
else _updatePolygon(parent, star, identity ? nullptr : &matrix, frameNo, merging);
|
|
P(merging)->update(RenderUpdateFlag::Path);
|
|
}
|
|
}
|
|
|
|
|
|
static void _updateImage(LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, RenderContext* ctx)
|
|
{
|
|
auto image = static_cast<LottieImage*>(*child);
|
|
auto picture = image->picture;
|
|
|
|
if (!picture) {
|
|
picture = Picture::gen().release();
|
|
|
|
//force to load a picture on the same thread
|
|
TaskScheduler::async(false);
|
|
|
|
if (image->size > 0) {
|
|
if (picture->load((const char*)image->b64Data, image->size, image->mimeType, false) != Result::Success) {
|
|
delete(picture);
|
|
return;
|
|
}
|
|
} else {
|
|
if (picture->load(image->path) != Result::Success) {
|
|
delete(picture);
|
|
return;
|
|
}
|
|
}
|
|
|
|
TaskScheduler::async(true);
|
|
|
|
image->picture = picture;
|
|
PP(picture)->ref();
|
|
}
|
|
|
|
if (ctx->propagator) {
|
|
if (auto matrix = PP(ctx->propagator)->transform()) {
|
|
picture->transform(*matrix);
|
|
}
|
|
picture->opacity(PP(ctx->propagator)->opacity);
|
|
}
|
|
parent->scene->push(cast<Picture>(picture));
|
|
}
|
|
|
|
|
|
static void _updateRoundedCorner(TVG_UNUSED LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, RenderContext* ctx)
|
|
{
|
|
auto roundedCorner= static_cast<LottieRoundedCorner*>(*child);
|
|
|
|
auto roundness = roundedCorner->radius(frameNo);
|
|
if (ctx->roundness < roundness) ctx->roundness = roundness;
|
|
}
|
|
|
|
|
|
static void _updateRepeater(TVG_UNUSED LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, RenderContext* ctx)
|
|
{
|
|
auto repeater= static_cast<LottieRepeater*>(*child);
|
|
|
|
if (!ctx->repeater) ctx->repeater = new RenderRepeater();
|
|
ctx->repeater->cnt = static_cast<int>(repeater->copies(frameNo));
|
|
ctx->repeater->offset = repeater->offset(frameNo);
|
|
ctx->repeater->position = repeater->position(frameNo);
|
|
ctx->repeater->anchor = repeater->anchor(frameNo);
|
|
ctx->repeater->scale = repeater->scale(frameNo);
|
|
ctx->repeater->rotation = repeater->rotation(frameNo);
|
|
ctx->repeater->startOpacity = repeater->startOpacity(frameNo);
|
|
ctx->repeater->endOpacity = repeater->endOpacity(frameNo);
|
|
ctx->repeater->inorder = repeater->inorder;
|
|
ctx->repeater->interpOpacity = (ctx->repeater->startOpacity == ctx->repeater->endOpacity) ? false : true;
|
|
|
|
ctx->merging = nullptr;
|
|
}
|
|
|
|
|
|
static void _updateTrimpath(TVG_UNUSED LottieGroup* parent, LottieObject** child, float frameNo, TVG_UNUSED Inlist<RenderContext>& contexts, RenderContext* ctx)
|
|
{
|
|
auto trimpath= static_cast<LottieTrimpath*>(*child);
|
|
|
|
float begin, end;
|
|
trimpath->segment(frameNo, begin, end);
|
|
|
|
if (P(ctx->propagator)->rs.stroke) {
|
|
auto pbegin = P(ctx->propagator)->rs.stroke->trim.begin;
|
|
auto pend = P(ctx->propagator)->rs.stroke->trim.end;
|
|
auto length = fabsf(pend - pbegin);
|
|
begin = (length * begin) + pbegin;
|
|
end = (length * end) + pbegin;
|
|
}
|
|
|
|
P(ctx->propagator)->strokeTrim(begin, end);
|
|
|
|
if (trimpath->type == LottieTrimpath::Individual) ctx->allowMerging = false;
|
|
}
|
|
|
|
|
|
static void _updateChildren(LottieGroup* parent, float frameNo, Inlist<RenderContext>& contexts)
|
|
{
|
|
contexts.head->begin = parent->children.end() - 1;
|
|
|
|
while (!contexts.empty()) {
|
|
auto ctx = contexts.front();
|
|
ctx->reqFragment = parent->reqFragment;
|
|
for (auto child = ctx->begin; child >= parent->children.data; --child) {
|
|
switch ((*child)->type) {
|
|
case LottieObject::Group: {
|
|
_updateGroup(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::Transform: {
|
|
_updateTransform(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::SolidFill: {
|
|
_updateSolidFill(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::SolidStroke: {
|
|
_updateSolidStroke(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::GradientFill: {
|
|
_updateGradientFill(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::GradientStroke: {
|
|
_updateGradientStroke(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::Rect: {
|
|
_updateRect(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::Ellipse: {
|
|
_updateEllipse(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::Path: {
|
|
_updatePath(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::Polystar: {
|
|
_updatePolystar(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::Image: {
|
|
_updateImage(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::Trimpath: {
|
|
_updateTrimpath(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::Text: {
|
|
_updateText(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::Repeater: {
|
|
_updateRepeater(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
case LottieObject::RoundedCorner: {
|
|
_updateRoundedCorner(parent, child, frameNo, contexts, ctx);
|
|
break;
|
|
}
|
|
default: break;
|
|
}
|
|
}
|
|
delete(ctx);
|
|
}
|
|
}
|
|
|
|
|
|
static void _updatePrecomp(LottieLayer* precomp, float frameNo)
|
|
{
|
|
if (precomp->children.count == 0) return;
|
|
|
|
frameNo = precomp->remap(frameNo);
|
|
|
|
for (auto child = precomp->children.end() - 1; child >= precomp->children.data; --child) {
|
|
_updateLayer(precomp, static_cast<LottieLayer*>(*child), frameNo);
|
|
}
|
|
|
|
//clip the layer viewport
|
|
if (precomp->w > 0 && precomp->h > 0) {
|
|
auto clipper = Shape::gen().release();
|
|
clipper->appendRect(0, 0, static_cast<float>(precomp->w), static_cast<float>(precomp->h));
|
|
clipper->transform(precomp->cache.matrix);
|
|
|
|
//TODO: remove the intermediate scene....
|
|
auto cscene = Scene::gen();
|
|
cscene->composite(cast(clipper), CompositeMethod::ClipPath);
|
|
cscene->push(cast(precomp->scene));
|
|
precomp->scene = cscene.release();
|
|
}
|
|
}
|
|
|
|
|
|
static void _updateSolid(LottieLayer* layer)
|
|
{
|
|
auto shape = Shape::gen();
|
|
shape->appendRect(0, 0, static_cast<float>(layer->w), static_cast<float>(layer->h));
|
|
shape->fill(layer->color.rgb[0], layer->color.rgb[1], layer->color.rgb[2], layer->cache.opacity);
|
|
layer->scene->push(std::move(shape));
|
|
}
|
|
|
|
|
|
static void _updateMaskings(LottieLayer* layer, float frameNo)
|
|
{
|
|
if (layer->masks.count == 0) return;
|
|
|
|
//maskings
|
|
Shape* pmask = nullptr;
|
|
auto pmethod = CompositeMethod::AlphaMask;
|
|
|
|
for (auto m = layer->masks.data; m < layer->masks.end(); ++m) {
|
|
auto mask = static_cast<LottieMask*>(*m);
|
|
auto shape = Shape::gen().release();
|
|
shape->fill(255, 255, 255, mask->opacity(frameNo));
|
|
shape->transform(layer->cache.matrix);
|
|
if (mask->pathset(frameNo, P(shape)->rs.path.cmds, P(shape)->rs.path.pts)) {
|
|
P(shape)->update(RenderUpdateFlag::Path);
|
|
}
|
|
auto method = mask->method;
|
|
if (pmask) {
|
|
//false of false is true. invert.
|
|
if (method == CompositeMethod::SubtractMask && pmethod == method) {
|
|
method = CompositeMethod::AddMask;
|
|
} else if (pmethod == CompositeMethod::DifferenceMask && pmethod == method) {
|
|
method = CompositeMethod::IntersectMask;
|
|
}
|
|
pmask->composite(cast<Shape>(shape), method);
|
|
} else {
|
|
if (method == CompositeMethod::SubtractMask) method = CompositeMethod::InvAlphaMask;
|
|
else if (method == CompositeMethod::AddMask) method = CompositeMethod::AlphaMask;
|
|
else if (method == CompositeMethod::IntersectMask) method = CompositeMethod::AlphaMask;
|
|
else if (method == CompositeMethod::DifferenceMask) method = CompositeMethod::AlphaMask; //does this correct?
|
|
layer->scene->composite(cast<Shape>(shape), method);
|
|
}
|
|
pmethod = mask->method;
|
|
pmask = shape;
|
|
}
|
|
}
|
|
|
|
|
|
static bool _updateMatte(LottieLayer* root, LottieLayer* layer, float frameNo)
|
|
{
|
|
auto target = layer->matte.target;
|
|
if (!target) return true;
|
|
|
|
_updateLayer(root, target, frameNo);
|
|
|
|
if (target->scene) {
|
|
layer->scene->composite(cast(target->scene), layer->matte.type);
|
|
} else if (layer->matte.type == CompositeMethod::AlphaMask || layer->matte.type == CompositeMethod::LumaMask) {
|
|
//matte target is not exist. alpha blending definitely bring an invisible result
|
|
delete(layer->scene);
|
|
layer->scene = nullptr;
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
static void _updateLayer(LottieLayer* root, LottieLayer* layer, float frameNo)
|
|
{
|
|
layer->scene = nullptr;
|
|
|
|
//visibility
|
|
if (frameNo < layer->inFrame || frameNo >= layer->outFrame) return;
|
|
|
|
_updateTransform(layer, frameNo);
|
|
|
|
//full transparent scene. no need to perform
|
|
if (layer->type != LottieLayer::Null && layer->cache.opacity == 0) return;
|
|
|
|
//Prepare render data
|
|
layer->scene = Scene::gen().release();
|
|
|
|
//ignore opacity when Null layer?
|
|
if (layer->type != LottieLayer::Null) layer->scene->opacity(layer->cache.opacity);
|
|
|
|
layer->scene->transform(layer->cache.matrix);
|
|
|
|
if (layer->matte.target && layer->masks.count > 0) TVGERR("LOTTIE", "FIXME: Matte + Masking??");
|
|
|
|
if (!_updateMatte(root, layer, frameNo)) return;
|
|
|
|
_updateMaskings(layer, frameNo);
|
|
|
|
switch (layer->type) {
|
|
case LottieLayer::Precomp: {
|
|
if (!layer->children.empty()) {
|
|
_updatePrecomp(layer, frameNo);
|
|
}
|
|
break;
|
|
}
|
|
case LottieLayer::Solid: {
|
|
_updateSolid(layer);
|
|
break;
|
|
}
|
|
default: {
|
|
if (!layer->children.empty()) {
|
|
Inlist<RenderContext> contexts;
|
|
contexts.back(new RenderContext);
|
|
_updateChildren(layer, frameNo, contexts);
|
|
contexts.free();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
layer->scene->blend(layer->blendMethod);
|
|
|
|
//the given matte source was composited by the target earlier.
|
|
if (!layer->matteSrc) root->scene->push(cast(layer->scene));
|
|
}
|
|
|
|
|
|
static void _buildReference(LottieComposition* comp, LottieLayer* layer)
|
|
{
|
|
for (auto asset = comp->assets.data; asset < comp->assets.end(); ++asset) {
|
|
if (strcmp(layer->refId, (*asset)->name)) continue;
|
|
if (layer->type == LottieLayer::Precomp) {
|
|
auto assetLayer = static_cast<LottieLayer*>(*asset);
|
|
if (_buildComposition(comp, assetLayer)) {
|
|
layer->children = assetLayer->children;
|
|
layer->reqFragment = assetLayer->reqFragment;
|
|
}
|
|
} else if (layer->type == LottieLayer::Image) {
|
|
layer->children.push(*asset);
|
|
}
|
|
layer->statical &= (*asset)->statical;
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static void _bulidHierarchy(LottieGroup* parent, LottieLayer* child)
|
|
{
|
|
if (child->pid == -1) return;
|
|
|
|
if (child->matte.target && child->pid == child->matte.target->id) {
|
|
child->parent = child->matte.target;
|
|
return;
|
|
}
|
|
|
|
for (auto p = parent->children.data; p < parent->children.end(); ++p) {
|
|
auto parent = static_cast<LottieLayer*>(*p);
|
|
if (child == parent) continue;
|
|
if (child->pid == parent->id) {
|
|
child->parent = parent;
|
|
break;
|
|
}
|
|
if (parent->matte.target && parent->matte.target->id == child->pid) {
|
|
child->parent = parent->matte.target;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static void _attachFont(LottieComposition* comp, LottieLayer* parent)
|
|
{
|
|
//TODO: Consider to migrate this attachment to the frame update time.
|
|
for (auto c = parent->children.data; c < parent->children.end(); ++c) {
|
|
auto text = static_cast<LottieText*>(*c);
|
|
auto& doc = text->doc(0);
|
|
if (!doc.name) continue;
|
|
auto len = strlen(doc.name);
|
|
for (uint32_t i = 0; i < comp->fonts.count; ++i) {
|
|
auto font = comp->fonts[i];
|
|
auto len2 = strlen(font->name);
|
|
if (!strncmp(font->name, doc.name, len < len2 ? len : len2)) {
|
|
text->font = font;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static bool _buildComposition(LottieComposition* comp, LottieGroup* parent)
|
|
{
|
|
if (parent->children.count == 0) return false;
|
|
|
|
for (auto c = parent->children.data; c < parent->children.end(); ++c) {
|
|
auto child = static_cast<LottieLayer*>(*c);
|
|
|
|
//attach the precomp layer.
|
|
if (child->refId) _buildReference(comp, child);
|
|
|
|
if (child->matte.target) {
|
|
//parenting
|
|
_bulidHierarchy(parent, child->matte.target);
|
|
//precomp referencing
|
|
if (child->matte.target->refId) _buildReference(comp, child->matte.target);
|
|
child->statical &= child->matte.target->statical;
|
|
}
|
|
_bulidHierarchy(parent, child);
|
|
|
|
//attach the necessary font data
|
|
if (child->type == LottieLayer::Text) _attachFont(comp, child);
|
|
|
|
child->statical &= parent->statical;
|
|
parent->statical &= child->statical;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
/************************************************************************/
|
|
/* External Class Implementation */
|
|
/************************************************************************/
|
|
|
|
bool LottieBuilder::update(LottieComposition* comp, float frameNo)
|
|
{
|
|
frameNo += comp->startFrame;
|
|
if (frameNo < comp->startFrame) frameNo = comp->startFrame;
|
|
if (frameNo >= comp->endFrame) frameNo = (comp->endFrame - 1);
|
|
|
|
//Update root layer
|
|
auto root = comp->root;
|
|
|
|
//Prepare render data
|
|
if (!root->scene) {
|
|
auto scene = Scene::gen();
|
|
root->scene = scene.get();
|
|
comp->scene->push(std::move(scene));
|
|
} else {
|
|
root->scene->clear();
|
|
}
|
|
|
|
//update children layers
|
|
for (auto child = root->children.end() - 1; child >= root->children.data; --child) {
|
|
_updateLayer(root, static_cast<LottieLayer*>(*child), frameNo);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
|
|
void LottieBuilder::build(LottieComposition* comp)
|
|
{
|
|
if (!comp || !comp->root || comp->scene) return;
|
|
|
|
comp->scene = Scene::gen().release();
|
|
if (!comp->scene) return;
|
|
|
|
_buildComposition(comp, comp->root);
|
|
|
|
if (!update(comp, 0)) return;
|
|
|
|
//viewport clip
|
|
auto clip = Shape::gen();
|
|
clip->appendRect(0, 0, static_cast<float>(comp->w), static_cast<float>(comp->h));
|
|
comp->scene->composite(std::move(clip), CompositeMethod::ClipPath);
|
|
}
|