SkAutoConicToQuads Class Reference

#include <SkGeometry.h>

Public Member Functions
	SkAutoConicToQuads ()
const SkPoint *	computeQuads (const SkConic &conic, SkScalar tol)
const SkPoint *	computeQuads (const SkPoint pts[3], SkScalar weight, SkScalar tol)
int	countQuads () const

Detailed Description

Help class to allocate storage for approximating a conic with N quads.

Definition at line 508 of file SkGeometry.h.

Constructor & Destructor Documentation

SkAutoConicToQuads()

SkAutoConicToQuads::SkAutoConicToQuads ( )

inline

Definition at line 510 of file SkGeometry.h.

: fQuadCount(0) {}

Member Function Documentation

computeQuads() [1/2]

const SkPoint * SkAutoConicToQuads::computeQuads ( const SkConic &  conic, SkScalar  tol  )

inline

Given a conic and a tolerance, return the array of points for the approximating quad(s). Call countQuads() to know the number of quads represented in these points.

The quads are allocated to share end-points. e.g. if there are 4 quads, there will be 9 points allocated as follows quad[0] == pts[0..2] quad[1] == pts[2..4] quad[2] == pts[4..6] quad[3] == pts[6..8]

Definition at line 524 of file SkGeometry.h.

                                                                    {
        int pow2 = conic.computeQuadPOW2(tol);
        fQuadCount = 1 << pow2;
        SkPoint* pts = fStorage.reset(1 + 2 * fQuadCount);
        fQuadCount = conic.chopIntoQuadsPOW2(pts, pow2);
        return pts;
    }

computeQuads() [2/2]

const SkPoint * SkAutoConicToQuads::computeQuads ( const SkPoint  pts[3], SkScalar  weight, SkScalar  tol  )

inline

Definition at line 532 of file SkGeometry.h.

                                              {
        SkConic conic;
        conic.set(pts, weight);
        return computeQuads(conic, tol);
    }

countQuads()

int SkAutoConicToQuads::countQuads ( ) const

inline

Definition at line 539 of file SkGeometry.h.

{ return fQuadCount; }

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

• third_party/skia/src/core/SkGeometry.h