The 'Paint' function now includes an internal stroking option,
allowing the bounding box to be calculated with or without the stroke size taken into account.
This feature is particularly useful for SVG loaders,
and we might consider making the interface available for user demands in the future.
The blending feature allows user to combine colors to create visually appealing effects,
including transparency, lighting, shading, and color mixing, among others.
Its process involves the combination of colors or images from the source paint object
with the destination (the lower layer image) using blending operations.
The blending operation is determined by the chosen @p BlendMethod,
which specifies how the colors or images are combined.
@APIs:
- enum class BlendMethod::Normal, Add, Screen, Multiply, Overlay, Lighten, Difference, Exclusion, SrcOver, Darken, Lighten, ColorDodge, ColorBurn
- BlendMethod Paint::blend() const noexcept;
- Result Paint::blend(BlendMethod method) const noexcept;
@Issue: https://github.com/thorvg/thorvg/issues/307
Co-authored-by: Peter Vullings <peter@projectitis.com>
Co-authored-by: Hermet Park <hermetpark@lottiefiles.com>
If a paint is used as a clipper, it must be determined in the paint behavior.
Propagate its decision to the immediate derived classes so that
not only shapes but also scenes must be dealt as a clipper properly.
This revised this change 0de3872be3
for better a solution.
According to the svg specs clip's fill and opacity
should be ignored. Till now setting the alpha/opacity
value to zero resulted in the shape's rendering abort.
@Issue: https://github.com/Samsung/thorvg/issues/1192
Handle correctly duplicated spans from the multiple y span data.
Previous logic only expected the one single y span data from the rle.
However rle might have multiple y span data if the anti-aliasing is applied.
This patch also removed the bad design of the common engine
which handles the anti-alising option to ignore the anti-aliasing rle generation.
Just realized, it's difficult to control that condition due to scene-composition.
replace the transformed rle rgba image with the texmap raster.
this patch removes the several scattered transformed image rasterizer,
reuse the unified one texmap method instead.
yay, it's much clean and optimal.
Migrate the id property to the base class internals
so that pimpl classes could access the data easier.
This is a sort of prerequisite change for the coming texmap anti-aliasing.
The problem was observed for empty masked scenes (except the fastTrack
cases). Solved by imimediate returning from the func without passing 'false'
as its result.
There was a missing sorting between the left-top & right-bottom corner.
that results in the negative values of the viewport...
Now fixed it.
+ refactored to use math functions...
+ still it's a buggy, sometimes no draw at 90' in stress. don't know reason. :(
applying fast track approach to the alpha mask when its condition is matched.
(simple rectangle alpha masking which isn't half-translucent)
From time to time, designers brutally use the alpha masking to clip simple region,
thorvg can help the situation by avoiding masking usage internally.
This can reduce the 1-step render pass composition.
@Issue: https://github.com/Samsung/thorvg/issues/344
delete dangling object properly in the corner case.
Unfortunately, this brings to correct the capi test cases.
we assume the paints is deleted whenever its result is successful or not.
@Issue: https://github.com/Samsung/thorvg/issues/995
removed invalid nullptr checks.
New allocation doesn't gurantee that returns nullptr when it's failed.
It's useless on the modern compliers and our policy respects it.
Current paint::bounds() returns the coordinates under the raw status,
the values are not quite useful if the paint object has the transformed children.
Thus, we extends the feature and give an additional parameter "transformed"
to return the coordinates values after transformation by user demands.
This is also necessary for tvg format, since we need the exact view size of the scene information.
The previous api is deprecated and we introduce a new api to replace it.
@APIs:
+ Result Paint::bounds(float* x, float* y, float* w, float* h, bool transformed) const noexcept;
- Result Paint::bounds(float* x, float* y, float* w, float* h) const noexcept;
@Issues: https://github.com/Samsung/thorvg/issues/746
Clips from outside the rendering region were ignored resulting
in rendering shapes, which should be completely clipped.
In case of the clip fast track, the bounding box width/height
overflow occured and shape, that should be clipped, could be
visible (not always).
This change protects against negative value in unsigned int of
RenderRegion.x/y. This fixes a problem of invisible paint if ClipPath
bounds was negative.
@issue: #704
tvg saver is a new module to export tvg files.
In this patch, it also contains the infrastructure of saver module
to expand other types of savers such as png, jpg, etc.
To save the tvg file from a paint, you can use the Saver feature, for example:
auto saver = tvg::Saver::gen();
saver->save(paint, "sample.tvg");
saver->sync();
Later, you can read the "sample.tvg" using Picture.
auto picture = tvg::Picture::gen();
picture->load("sample.tvg");
...
The behavior of the saver will work on sync/async based on the threading setting of the initializer.
Thus if you wish to have a benefit of it, you must call sync() after the save() in the proper delayed time.
Otherwise, you can call sync() immediately.
Note that, the asynchronous tasking is depent on the saver module implementation.
Also, you need to enable tvg saver/loader modules from meson option. (yet this feature is under the beta)
@API Addition:
Result Saver::save(std::unique_ptr<Paint> paint, const std::string& path) noexcept;
Result Saver::sync() noexcept;
@Examples: tvgSaver
@Co-author: Mira Grudzinska <m.grudzinska@samsung.com>
compoiste() requires internal data change, its api syntax should not contain "const"
though this changes the api spec, but won't affect build break
since it allows wider usage.
@API Modification
from:
Result Paint::composite(std::unique_ptr<Paint> target, CompositeMethod method) const noexcept
to:
Result Paint::composite(std::unique_ptr<Paint> target, CompositeMethod method) noexcept
The buffer to which the mask is rastered is only partially cleared.
If the object to which the mask is applied overlaps an area where
another mask was used, an erroneous image is generated. The buffer
clearing area has been increased to the size of the object to which
the mask is applied.
