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lottie: smoothness support in the text range selector

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@issue: #2178
This commit is contained in:
Mira Grudzinska 2024-10-31 10:31:01 +07:00 • committed by Hermet Park
parent 606e107712
commit 76206a174e
2 changed files with 42 additions and 11 deletions
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45
src/loaders/lottie/tvgLottieBuilder.cpp
View file

@ -1083,13 +1083,15 @@ void LottieBuilder::updateText(LottieLayer* layer, float frameNo)
shape->stroke(doc.stroke.color.rgb[0], doc.stroke.color.rgb[1], doc.stroke.color.rgb[2]);
}
bool needGroup = false;
auto needGroup = false;
//text range process
if (!text->ranges.empty()) {
Point scaling = {1.0f, 1.0f};
auto rotation = 0.0f;
Point translation = {0.0f, 0.0f};
auto color = doc.color;
auto strokeColor = doc.stroke.color;
//text range process
for (auto s = text->ranges.begin(); s < text->ranges.end(); ++s) {
auto basedIdx = idx;
if ((*s)->based == LottieTextRange::Based::CharsExcludingSpaces) basedIdx = idx - space;
@ -1100,25 +1102,46 @@ void LottieBuilder::updateText(LottieLayer* layer, float frameNo)
if (tvg::zero(f)) continue;
needGroup = true;
translation = translation + (*s)->style.position(frameNo);
translation = translation + f * (*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);
temp.x *= 0.01f;
temp.y *= 0.01f;
temp.x -= 1.0f;
temp.y -= 1.0f;
temp.x *= f;
temp.y *= f;
temp.x += 1.0f;
temp.y += 1.0f;
scaling.x *= temp.x;
scaling.y *= temp.y;
rotation += f * (*s)->style.rotation(frameNo);
shape->opacity((*s)->style.opacity(frameNo));
auto color = (*s)->style.fillColor(frameNo);
auto rangeColor = (*s)->style.fillColor(frameNo); //TODO: use flag to check whether it was really set
if (tvg::equal(f, 1.0f)) color = rangeColor;
else {
color.rgb[0] = lerp<uint8_t>(color.rgb[0], rangeColor.rgb[0], f);
color.rgb[1] = lerp<uint8_t>(color.rgb[1], rangeColor.rgb[1], f);
color.rgb[2] = lerp<uint8_t>(color.rgb[2], rangeColor.rgb[2], f);
}
shape->fill(color.rgb[0], color.rgb[1], color.rgb[2], (*s)->style.fillOpacity(frameNo));
if (doc.stroke.render) {
auto strokeColor = (*s)->style.strokeColor(frameNo);
shape->stroke((*s)->style.strokeWidth(frameNo) / scale);
shape->stroke(f * (*s)->style.strokeWidth(frameNo) / scale);
auto rangeColor = (*s)->style.strokeColor(frameNo); //TODO: use flag to check whether it was really set
if (tvg::equal(f, 1.0f)) strokeColor = rangeColor;
else {
strokeColor.rgb[0] = lerp<uint8_t>(strokeColor.rgb[0], rangeColor.rgb[0], f);
strokeColor.rgb[1] = lerp<uint8_t>(strokeColor.rgb[1], rangeColor.rgb[1], f);
strokeColor.rgb[2] = lerp<uint8_t>(strokeColor.rgb[2], rangeColor.rgb[2], f);
}
shape->stroke(strokeColor.rgb[0], strokeColor.rgb[1], strokeColor.rgb[2], (*s)->style.strokeOpacity(frameNo));
}
cursor.x += (*s)->style.letterSpacing(frameNo);
auto spacing = (*s)->style.lineSpacing(frameNo);
cursor.x += f * (*s)->style.letterSpacing(frameNo);
auto spacing = f * (*s)->style.lineSpacing(frameNo);
if (spacing > lineSpacing) lineSpacing = spacing;
}

8
src/loaders/lottie/tvgLottieModel.cpp
View file

@ -140,6 +140,14 @@ float LottieTextRange::factor(float frameNo, float totalLen, float idx)
clamp(f, 0.0f, 1.0f);
}
//apply smoothness
auto smoothness = this->smoothness(frameNo);
if (smoothness < 100.0f) {
smoothness *= 0.01f;
f = (f - (1.0f - smoothness) * 0.5f) / smoothness;
clamp(f, 0.0f, 1.0f);
}
return f;
}