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lottie: support 'direction' in ellipses

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Mira Grudzinska 2024-07-09 15:50:25 +02:00 • committed by Hermet Park
parent bedaa909ad
commit 8340c1e1d7
2 changed files with 19 additions and 12 deletions
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28
src/loaders/lottie/tvgLottieBuilder.cpp
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@ -553,7 +553,7 @@ static void _updateRect(LottieGroup* parent, LottieObject** child, float frameNo
}
static void _appendCircle(Shape* shape, float cx, float cy, float rx, float ry, Matrix* transform)
static void _appendCircle(Shape* shape, float cx, float cy, float rx, float ry, Matrix* transform, bool clockwise)
{
auto rxKappa = rx * PATH_KAPPA;
auto ryKappa = ry * PATH_KAPPA;
@ -565,13 +565,21 @@ static void _appendCircle(Shape* shape, float cx, float cy, float rx, float ry,
};
constexpr int ptsCnt = 13;
Point points[ptsCnt] = {
{cx, cy - ry}, //moveTo
{cx + rxKappa, cy - ry}, {cx + rx, cy - ryKappa}, {cx + rx, cy}, //cubicTo
{cx + rx, cy + ryKappa}, {cx + rxKappa, cy + ry}, {cx, cy + ry}, //cubicTo
{cx - rxKappa, cy + ry}, {cx - rx, cy + ryKappa}, {cx - rx, cy}, //cubicTo
{cx - rx, cy - ryKappa}, {cx - rxKappa, cy - ry}, {cx, cy - ry} //cubicTo
};
Point points[ptsCnt];
if (clockwise) {
points[0] = {cx, cy - ry}; //moveTo
points[1] = {cx + rxKappa, cy - ry}; points[2] = {cx + rx, cy - ryKappa}; points[3] = {cx + rx, cy}; //cubicTo
points[4] = {cx + rx, cy + ryKappa}; points[5] = {cx + rxKappa, cy + ry}; points[6] = {cx, cy + ry}; //cubicTo
points[7] = {cx - rxKappa, cy + ry}; points[8] = {cx - rx, cy + ryKappa}; points[9] = {cx - rx, cy}; //cubicTo
points[10] = {cx - rx, cy - ryKappa}; points[11] = {cx - rxKappa, cy - ry}; points[12] = {cx, cy - ry}; //cubicTo
} else {
points[0] = {cx, cy - ry}; //moveTo
points[1] = {cx - rxKappa, cy - ry}; points[2] = {cx - rx, cy - ryKappa}; points[3] = {cx - rx, cy}; //cubicTo
points[4] = {cx - rx, cy + ryKappa}; points[5] = {cx - rxKappa, cy + ry}; points[6] = {cx, cy + ry}; //cubicTo
points[7] = {cx + rxKappa, cy + ry}; points[8] = {cx + rx, cy + ryKappa}; points[9] = {cx + rx, cy}; //cubicTo
points[10] = {cx + rx, cy - ryKappa}; points[11] = {cx + rxKappa, cy - ry}; points[12] = {cx, cy - ry}; //cubicTo
}
if (transform) {
for (int i = 0; i < ptsCnt; ++i) {
@ -592,11 +600,11 @@ static void _updateEllipse(LottieGroup* parent, LottieObject** child, float fram
if (!ctx->repeaters.empty()) {
auto path = Shape::gen();
_appendCircle(path.get(), position.x, position.y, size.x * 0.5f, size.y * 0.5f, ctx->transform);
_appendCircle(path.get(), position.x, position.y, size.x * 0.5f, size.y * 0.5f, ctx->transform, ellipse->clockwise);
_repeat(parent, std::move(path), ctx);
} else {
_draw(parent, ctx);
_appendCircle(ctx->merging, position.x, position.y, size.x * 0.5f, size.y * 0.5f, ctx->transform);
_appendCircle(ctx->merging, position.x, position.y, size.x * 0.5f, size.y * 0.5f, ctx->transform, ellipse->clockwise);
}
}

3
src/loaders/lottie/tvgLottieParser.cpp
View file

@ -1088,8 +1088,7 @@ void LottieParser::parseTimeRemap(LottieLayer* layer)
uint8_t LottieParser::getDirection()
{
auto v = getInt();
if (v == 3) return false;
if (getInt() == 3) return false;
return true;
}