When the system fails to interpret the expression code,
it forcibly disables the feature per property.
This improvement enhances stability and performance
by avoiding reckless attempts to interpret JavaScript code.
When we confirm the full stability with expressions,
we can revert this code.
the WIN32_LEAN_AND_MEAN definition will remove the unused
features in windows.h that helps to improve the build-speed
as well as fixing the issue.
Issue: https://github.com/thorvg/thorvg/issues/2225
Co-Authored-By: Hermet Park <hermet@lottiefiles.com>
The current development of the expression engine is experimental.
It does not support multi-threading.
Therefore, when tvg::Initializer::init() is configured
with more than one thread, expressions will be automatically disabled.
issue: https://github.com/thorvg/thorvg/issues/1640
These internal methods have been introduced to search for content within
an object (parent) using a given parameter (name or index).
- LottieLayer* LottieGroup::asset(const char* name)
- LottieLayer* LottieComposition::asset(const char* name)
- LottieLayer* LottieComposition::layer(uint16_t id)
- LottieLayer* LottieComposition::layer(const char* name)
This converts the frame number to the corresponding time.
- float LottieComposition::timeAtFrame(float frameNo)
introduced the JerryScript engine to interpret Lottie
expressions, enhancing the capability to support runtime
programmable animation logic within Lottie expressions
spec. This feature, based on js scripting, represents
the most complicated addition to the Lottie spec so far.
ThorVG probably could includes an option to toggle
this feature at build time, allowing for customizable user
configurations according to specific requirements.
removed unused features for the optimal size:
- DEBUGGER
- MEM_STATS
- SNAPSHOT
- BUILTIN_JSON
- BUILTIN_PROXY
- BUILTIN_REFLECT
- BUILTIN_ATOMICS
- PROMISE_CALLBACK
- MODULE_SYSTEM
- SYSTEM_PORT
This is an experimental version.
Please manually enable the 'lottie-expressions' in meson.build
when you wish to use it.
See: https://jerryscript.net/
Using a mask (any type) with alpha set to less
than 255 through the fill(r, g, b, a) API resulted
in incorrect compositions of fill and stroke.
Incorrect results were also observed for luma masks,
as their alpha is calculated based on the other color
channels.
@issue: https://github.com/thorvg/thorvg/issues/1653
Call the explicit memory deletion—binded in function `delete()`, which is highly recommended by the Memory management in Emscripten guideline.
The function will guarantee that the WASM module is cleaned up from the memory.
see: https://emscripten.org/docs/porting/connecting_cpp_and_javascript/embind.html#memory-management
Additionally, WASM module's initialization part has been refactored to correspond to the change.
The display property was not copied along with other
node properties. This caused incorrect rendering
of an object with display=none if accessed through
a use tag.
The error was visible when multiple shapes were
simultaneously trimmed. The length of a single
shape was zeroed out only in selected cases,
which caused accumulation that could lead to
incorrect extension of the variable determining
the maximum length.
@issue: https://github.com/thorvg/thorvg/issues/2173
The string passed to the svg parser is not guaranteed to always be a valid string.
Certain strings may have numbers that cannot be converted.
Therefore, make sure to check whether the converted value is in the appropriate range before returning.
related issue: https://github.com/thorvg/thorvg/issues/2078#issuecomment-2037495121
Because memcpy() is not guaranteed to copy null at the end of the data array,
it increase the size by 1 and add null
This prevents invalid access of string functions in parser.
Note that this change renames the Meson option from 'vector' to 'simd',
separates the NEON types into 'neon-arm' and 'neon-aarch',
and designates the 'mfpu' option solely for 'neon-arm'.
A single animation might have a desinated markers with naming: 0 ~ 0.5 (sector A), 0.5 ~ 1.0 (sector B). Selecting one of them using a marker name(sector A) and could play only that part with animation controllers.
usage:
- `animation->segment("sectionA") // Named segment(Marker)`
- `auto cnt = animation->markerCnt()`
- `auto name = animation->markers(index)`
- `animation->segment(0, 0.5) // Segment`
- `animation->segment(&begin, &end)`
Co-authored-by: Jinny You <jinny@lottiefiles.com>
If the command after `m` is not recognized, it must be recognized as `l` or `L`.
However, if it is not recognized after ending with `z`, all commands after it are ignored.
```
<svg width="100" version="1.0" xmlns="http://www.w3.org/2000/svg" height="100" xmlns:xlink="http://www.w3.org/1999/xlink">
<path style="stroke:#F00" d="m 20,20 0,50 50 0 -50 -50 z 70,70 0,50 50 0 -50 -50 z "/>
</svg>
```
Currently, tvg ignores the frame value if the difference
is less than 0.001. In most cases, updating the frames
when the change is less than 1ms is just an unnecessary
burden on the system.
Instead, this ensures that the perfect last frame is reached.
issue: https://github.com/thorvg/thorvg/issues/2147
