impeller::Tessellator::Trigs Class Reference

#include <tessellator.h>

Public Member Functions
	Trigs (Scalar pixel_radius)
size_t	size () const
std::vector< Trig >::iterator	begin () const
std::vector< Trig >::iterator	end () const
const Trig &	operator[] (size_t index) const
size_t	GetSteps () const

Friends
class	Tessellator

Detailed Description

Essentially just a vector of Trig objects, but supports storing a reference to either a cached vector or a locally generated vector. The constructor will fill the vector with quarter circular samples for the indicated number of equal divisions if the vector is new.

A given instance of Trigs will always contain at least 2 entries which is the minimum number of samples to traverse a quarter circle in a single step. The first sample will always be (0, 1) and the last sample will always be (1, 0).

Definition at line 48 of file tessellator.h.

Constructor & Destructor Documentation

Trigs()

impeller::Tessellator::Trigs::Trigs ( Scalar  pixel_radius )

explicit

Definition at line 411 of file tessellator.cc.

    : Tessellator::Trigs(ComputeQuadrantDivisions(pixel_radius)) {}

Member Function Documentation

begin()

std::vector<Trig>::iterator impeller::Tessellator::Trigs::begin ( ) const

inline

Definition at line 54 of file tessellator.h.

{ return trigs_.begin(); }

end()

std::vector<Trig>::iterator impeller::Tessellator::Trigs::end ( ) const

inline

Definition at line 55 of file tessellator.h.

{ return trigs_.end(); }

Referenced by impeller::StrokePathSegmentReceiver::StrokePathSegmentReceiver().

GetSteps()

size_t impeller::Tessellator::Trigs::GetSteps ( ) const

inline

Definition at line 58 of file tessellator.h.

{ return trigs_.size() - 1u; }

Referenced by impeller::StrokePathSegmentReceiver::RecordArc(), and impeller::testing::TEST().

operator[]()

const Trig& impeller::Tessellator::Trigs::operator[] ( size_t  index ) const

inline

Definition at line 56 of file tessellator.h.

{ return trigs_[index]; }

size()

size_t impeller::Tessellator::Trigs::size ( ) const

inline

Definition at line 53 of file tessellator.h.

{ return trigs_.size(); }

Referenced by impeller::StrokeRectGeometry::GetPositionBuffer(), impeller::Tessellator::EllipticalVertexGenerator::GetVertexCount(), and impeller::StrokePathSegmentReceiver::StrokePathSegmentReceiver().

Friends And Related Function Documentation

Tessellator

friend class Tessellator

friend

Definition at line 61 of file tessellator.h.

---

The documentation for this class was generated from the following files:

• impeller/tessellator/tessellator.h
• impeller/tessellator/tessellator.cc