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lottie: fix transformations in text range selector

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Since the translate API was used while text updating,
the subsequent range selector transformations gets overwritten
when updating the shape (scale and rotate, adding another
translation will persist). This caused unexpected results.
Fixed by using the transform API when additional transformations
are needed - also fixes applying more than one range selector.
This commit is contained in:
Mira Grudzinska 2024-10-21 21:36:23 +07:00 • committed by Hermet Park
parent 33cfc16569
commit a851d1706e
2 changed files with 36 additions and 29 deletions
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29
src/loaders/lottie/tvgLottieBuilder.cpp
View file

@ -1060,6 +1060,11 @@ void LottieBuilder::updateText(LottieLayer* layer, float frameNo)
shape->stroke(doc.stroke.color.rgb[0], doc.stroke.color.rgb[1], doc.stroke.color.rgb[2]);
}
if (!text->ranges.empty()) {
Point scaling = {1.0f, 1.0f};
auto rotation = 0.0f;
auto translation = cursor;
//text range process
for (auto s = text->ranges.begin(); s < text->ranges.end(); ++s) {
float start, end;
@ -1071,23 +1076,18 @@ void LottieBuilder::updateText(LottieLayer* layer, float frameNo)
else if ((*s)->based == LottieTextRange::Based::Lines) basedIdx = line;
if (basedIdx < start || basedIdx >= end) continue;
auto matrix = shape->transform();
translation = translation + (*s)->style.position(frameNo);
auto temp = (*s)->style.scale(frameNo);
scaling.x *= temp.x * 0.01f;
scaling.y *= temp.y * 0.01f;
rotation += (*s)->style.rotation(frameNo);
shape->opacity((*s)->style.opacity(frameNo));
auto color = (*s)->style.fillColor(frameNo);
shape->fill(color.rgb[0], color.rgb[1], color.rgb[2], (*s)->style.fillOpacity(frameNo));
rotate(&matrix, (*s)->style.rotation(frameNo));
auto glyphScale = (*s)->style.scale(frameNo) * 0.01f;
tvg::scale(&matrix, glyphScale.x, glyphScale.y);
auto position = (*s)->style.position(frameNo);
translate(&matrix, position.x, position.y);
shape->transform(matrix);
if (doc.stroke.render) {
auto strokeColor = (*s)->style.strokeColor(frameNo);
shape->stroke((*s)->style.strokeWidth(frameNo) / scale);
@ -1098,6 +1098,13 @@ void LottieBuilder::updateText(LottieLayer* layer, float frameNo)
auto spacing = (*s)->style.lineSpacing(frameNo);
if (spacing > lineSpacing) lineSpacing = spacing;
}
Matrix matrix;
identity(&matrix);
translate(&matrix, translation.x, translation.y);
tvg::scale(&matrix, scaling.x, scaling.y);
rotate(&matrix, rotation);
shape->transform(matrix);
}
scene->push(cast(shape));

2
src/renderer/tvgPaint.h
View file

@ -107,7 +107,7 @@ namespace tvg
bool transform(const Matrix& m)
{
tr.m = m;
if (&tr.m != &m) tr.m = m;
tr.overriding = true;
renderFlag |= RenderUpdateFlag::Transform;