A Geometry class that generates fillable vertices (with or without texture coordinates) directly from a round superellipse object regardless of radii uniformity. More...
#include <round_superellipse_geometry.h>
Public Member Functions | |
RoundSuperellipseGeometry (const Rect &bounds, const RoundingRadii &radii) | |
RoundSuperellipseGeometry (const Rect &bounds, float corner_radius) | |
~RoundSuperellipseGeometry () override | |
bool | CoversArea (const Matrix &transform, const Rect &rect) const override |
Determines if this geometry, transformed by the given transform , will completely cover all surface area of the given rect . More... | |
bool | IsAxisAlignedRect () const override |
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virtual | ~Geometry () |
virtual GeometryResult::Mode | GetResultMode () const |
virtual bool | CanApplyMaskFilter () const |
virtual Scalar | ComputeAlphaCoverage (const Matrix &transform) const |
Additional Inherited Members | |
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static std::unique_ptr< Geometry > | MakeFillPath (const flutter::DlPath &path, std::optional< Rect > inner_rect=std::nullopt) |
static std::unique_ptr< Geometry > | MakeStrokePath (const flutter::DlPath &path, const StrokeParameters &stroke={}) |
static std::unique_ptr< Geometry > | MakeCover () |
static std::unique_ptr< Geometry > | MakeRect (const Rect &rect) |
static std::unique_ptr< Geometry > | MakeOval (const Rect &rect) |
static std::unique_ptr< Geometry > | MakeLine (const Point &p0, const Point &p1, const StrokeParameters &stroke) |
static std::unique_ptr< Geometry > | MakeCircle (const Point ¢er, Scalar radius) |
static std::unique_ptr< Geometry > | MakeStrokedCircle (const Point ¢er, Scalar radius, Scalar stroke_width) |
static std::unique_ptr< Geometry > | MakeFilledArc (const Rect &oval_bounds, Degrees start, Degrees sweep, bool include_center) |
static std::unique_ptr< Geometry > | MakeStrokedArc (const Rect &oval_bounds, Degrees start, Degrees sweep, const StrokeParameters &stroke) |
static std::unique_ptr< Geometry > | MakeRoundRect (const Rect &rect, const Size &radii) |
static std::unique_ptr< Geometry > | MakeRoundSuperellipse (const Rect &rect, Scalar corner_radius) |
static Scalar | ComputeStrokeAlphaCoverage (const Matrix &entity, Scalar stroke_width) |
Compute an alpha value to simulate lower coverage of fractional pixel strokes. More... | |
static GeometryResult | ComputePositionGeometry (const ContentContext &renderer, const Tessellator::VertexGenerator &generator, const Entity &entity, RenderPass &pass) |
A Geometry class that generates fillable vertices (with or without texture coordinates) directly from a round superellipse object regardless of radii uniformity.
A rounded superellipse is a shape similar to a typical rounded rectangle (RoundSuperellipse
), but with smoother transitions between the straight sides and the rounded corners. It resembles the RoundedRectangle
shape in SwiftUI with the .continuous
corner style. Technically, it is created by replacing the four corners of a superellipse (also known as a Lamé curve) with circular arcs.
The bounds
defines the position and size of the shape. The corner_radius
corresponds to SwiftUI's cornerRadius
parameter, which is close to, but not exactly equals to, the radius of the corner circles.
Definition at line 30 of file round_superellipse_geometry.h.
impeller::RoundSuperellipseGeometry::RoundSuperellipseGeometry | ( | const Rect & | bounds, |
const RoundingRadii & | radii | ||
) |
Definition at line 366 of file round_superellipse_geometry.cc.
impeller::RoundSuperellipseGeometry::RoundSuperellipseGeometry | ( | const Rect & | bounds, |
float | corner_radius | ||
) |
Definition at line 370 of file round_superellipse_geometry.cc.
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override |
Definition at line 375 of file round_superellipse_geometry.cc.
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overridevirtual |
Determines if this geometry, transformed by the given transform
, will completely cover all surface area of the given rect
.
This is a conservative estimate useful for certain optimizations.
true
if the transformed geometry is guaranteed to cover the given rect
. May return false
in many undetected cases where the transformed geometry does in fact cover the rect
. Reimplemented from impeller::Geometry.
Definition at line 443 of file round_superellipse_geometry.cc.
References impeller::RoundingRadii::bottom_left, impeller::RoundingRadii::bottom_right, impeller::TRect< T >::Contains(), impeller::TRect< T >::GetBottom(), impeller::TRect< T >::GetLeft(), impeller::TRect< T >::GetRight(), impeller::TRect< T >::GetTop(), impeller::TSize< T >::height, impeller::TRect< Scalar >::MakeLTRB(), impeller::RoundingRadii::top_left, impeller::RoundingRadii::top_right, transform, impeller::TRect< T >::TransformBounds(), and impeller::TSize< T >::width.
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overridevirtual |
Reimplemented from impeller::Geometry.
Definition at line 462 of file round_superellipse_geometry.cc.