Flutter Impeller
circle_geometry.h
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// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_IMPELLER_ENTITY_GEOMETRY_CIRCLE_GEOMETRY_H_
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#define FLUTTER_IMPELLER_ENTITY_GEOMETRY_CIRCLE_GEOMETRY_H_
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#include "
impeller/entity/geometry/geometry.h
"
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namespace
impeller
{
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// Geometry class that can generate vertices (with or without texture
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// coordinates) for either filled or stroked circles
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class
CircleGeometry
final :
public
Geometry
{
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public
:
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explicit
CircleGeometry
(
const
Point
& center,
Scalar
radius);
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explicit
CircleGeometry
(
const
Point
& center,
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Scalar
radius,
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Scalar
stroke_width
);
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~CircleGeometry
() =
default
;
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// |Geometry|
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bool
CoversArea
(
const
Matrix
& transform,
const
Rect
& rect)
const override
;
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// |Geometry|
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bool
IsAxisAlignedRect
()
const override
;
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private
:
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// |Geometry|
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GeometryResult
GetPositionBuffer(
const
ContentContext
& renderer,
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const
Entity
& entity,
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RenderPass
& pass)
const override
;
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// |Geometry|
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GeometryVertexType
GetVertexType()
const override
;
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// |Geometry|
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std::optional<Rect> GetCoverage(
const
Matrix
& transform)
const override
;
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// |Geometry|
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GeometryResult
GetPositionUVBuffer(
Rect
texture_coverage,
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Matrix
effect_transform,
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const
ContentContext
& renderer,
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const
Entity
& entity,
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RenderPass
& pass)
const override
;
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Point
center_;
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Scalar
radius_;
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Scalar
stroke_width_;
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CircleGeometry
(
const
CircleGeometry
&) =
delete
;
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CircleGeometry
& operator=(
const
CircleGeometry
&) =
delete
;
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};
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}
// namespace impeller
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#endif // FLUTTER_IMPELLER_ENTITY_GEOMETRY_CIRCLE_GEOMETRY_H_
impeller::Scalar
float Scalar
Definition:
scalar.h:18
impeller::CircleGeometry::CoversArea
bool CoversArea(const Matrix &transform, const Rect &rect) const override
Determines if this geometry, transformed by the given transform, will completely cover all surface ar...
Definition:
circle_geometry.cc:90
stroke_width
const Scalar stroke_width
Definition:
stroke_path_geometry.cc:293
impeller::GeometryVertexType
GeometryVertexType
Definition:
geometry.h:49
impeller::Entity
Definition:
entity.h:21
geometry.h
impeller::GeometryResult
Definition:
geometry.h:20
impeller::CircleGeometry::IsAxisAlignedRect
bool IsAxisAlignedRect() const override
Definition:
circle_geometry.cc:95
impeller::RenderPass
Render passes encode render commands directed as one specific render target into an underlying comman...
Definition:
render_pass.h:33
impeller::Geometry
Definition:
geometry.h:83
impeller::TPoint< Scalar >
impeller::CircleGeometry::CircleGeometry
CircleGeometry(const Point ¢er, Scalar radius)
Definition:
circle_geometry.cc:13
impeller
Definition:
aiks_blur_unittests.cc:20
impeller::CircleGeometry
Definition:
circle_geometry.h:14
impeller::CircleGeometry::~CircleGeometry
~CircleGeometry()=default
impeller::ContentContext
Definition:
content_context.h:392
impeller::TRect< Scalar >
impeller::Matrix
A 4x4 matrix using column-major storage.
Definition:
matrix.h:37
impeller
entity
geometry
circle_geometry.h
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