Improve parenthesis checking and space checking.
- There must be only one pair of parentheses.
- There cannot be spaces(and ') between id strings.
Issue: https://github.com/thorvg/thorvg/issues/1983
Co-authored-by: Hermet Park <hermet@lottiefiles.com>
Dashed curves require greater precision in calculating
their lengths and while splitting Bezier curves.
Otherwise, it results in visual discrepancies compared
to the expected outcomes.
Approximate functions 'bezLengthApprox' and 'bezAtApprox'
used for calculations in the lottie loader.
issue: https://github.com/thorvg/thorvg/issues/1686
In the case of non-uniform scaling for
thick strokes, artifacts were visible.
The calculations took into account the angle
resulting from the already transformed points,
whereas the untransformed points should have
been considered - the transformation is taken
into account in the next step.
@issue: https://github.com/thorvg/thorvg/issues/1915
enhance decoding efficiency by determining the desired canvas format
during image loading. This allows loaders to preemptively decode
the image in the specified format, to not convert the format again.
Attempt to load a given file/data using candidate formats
when the desired loader fails. This approach will enhance
the compatibility with various file formats in unexpected scenarios.
Previously, we had removed this feature, but have since
recognized its necessity due to the impact on file data
in specific corner cases.
Adjusted the sampling position basis by -0.5 pixel
to enhance edge line interpolation quality.
This change addresses an issue with the image up-scaling process,
resulting in clearer and more accurate visuals.
issue: https://github.com/thorvg/thorvg/issues/1949
Previously, the logic was set to halt rendering when any part of the paints,
particularly bitmap-based images, failed to render.
This update modifies the behavior to continue drawing the scene,
allowing for the successful rendering of other elements.
issue: https://github.com/thorvg/thorvg/issues/1951
dispose of the resources at the end of the paint deletion.
This will help retain the resources of the retained paints
and reuse them after reconstructing the next scene.
Previously, the Lottie parser expected a specific parsing order:
font followed by glyph, for optimal data processing.
However, since this order is not guaranteed,
we have revised the parsing logic to accommodate any order.
This update fixes an issue where duplicated overlapping curves/lines,
when introduced as a single line.
That case overlapping command operation is take account for
the trim path's path-building process.
We now skip such cases to ensure the trim path functions correctly.
issue: https://github.com/thorvg/thorvg/issues/1939
The three specifications below apply.
Specification: https://www.w3.org/TR/SVG/paths.html#ArcOutOfRangeParameters
-
If the endpoint (x, y) of the segment is identical to the current point
(e.g., the endpoint of the previous segment),
then this is equivalent to omitting the elliptical arc segment entirely.
-
If either rx or ry is 0, then this arc is treated
as a straight line segment(a "lineto") joining the endpoints.
-
If either rx or ry have negative signs, these are dropped;
the absolute value is used instead.
resolved a corner case where assets were being attached
multiple times during scene building. This issue was causing
a significant performence drop in image animation
in certain scenarios.
adjusted the starting position of the rounded rectangle to 90 degrees
to ensure compatibility with the Lottie trim path effect.
This modification follows the earlier circle correction applied to the rectangle.
issue: https://github.com/thorvg/thorvg/issues/1933
The compositor memory is likely to be reused in the next frame.
To enhance performance, it is advisable to retain this memory by default.
We may consider introducing a cache policy interface in the Initializer.
This would allow users to manage the Canvas memory more effectively.
Anyhow, this improves the Lottie example performance by 10%
Adjust the sampling count according to the scale ratio.
This significantly improves performance
while making it hard to recognize any loss in image quality.
Lottie example performance has improved by 15%.
XOR when the shape's direction property is set to a value of 2.
Currently, the direction property is expected to have
either 1 for clockwise or 3 for counterclockwise orientation.
Just found out the number 2 use-case...
