polygonoffset.cpp File Reference

#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPath.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkTypes.h"
#include "include/private/base/SkTDArray.h"
#include "src/utils/SkPolyUtils.h"
#include "tools/ToolUtils.h"
#include <functional>
#include <memory>

Go to the source code of this file.

Classes
class	skiagm::PolygonOffsetGM

Namespaces
namespace	PolygonOffsetData
namespace	skiagm

Functions
static void	create_ngon (int n, SkPoint *pts, SkScalar w, SkScalar h, SkPathDirection dir)

Variables
const SkPoint	PolygonOffsetData::gPoints0 []
const SkPoint	PolygonOffsetData::gPoints1 []
const SkPoint	PolygonOffsetData::gPoints2 []
const SkPoint	PolygonOffsetData::gPoints3 []
const SkPoint	PolygonOffsetData::gPoints4 []
const SkPoint	PolygonOffsetData::gPoints5 []
const SkPoint	PolygonOffsetData::gPoints6 []
const SkPoint	PolygonOffsetData::gPoints7 []
const SkPoint	PolygonOffsetData::gPoints8 []
const SkPoint	PolygonOffsetData::gPoints9 []
const SkPoint	PolygonOffsetData::gPoints10 []
const SkPoint	PolygonOffsetData::gPoints11 []
const SkPoint	PolygonOffsetData::gPoints12 []
const SkScalar	PolygonOffsetData::kBottom = 25.f
const SkPoint	PolygonOffsetData::gPoints13 []
const SkPoint	PolygonOffsetData::gPoints14 []
const SkPoint	PolygonOffsetData::gPoints15 []
const SkPoint	PolygonOffsetData::gPoints16 []
const SkPoint	PolygonOffsetData::gPoints17 []
const SkPoint	PolygonOffsetData::gPoints18 []
const SkPoint *	PolygonOffsetData::gConvexPoints []
const size_t	PolygonOffsetData::gConvexSizes []
const SkPoint *	PolygonOffsetData::gSimplePoints []
const size_t	PolygonOffsetData::gSimpleSizes []

Function Documentation

create_ngon()

static void create_ngon ( int  n, SkPoint *  pts, SkScalar  w, SkScalar  h, SkPathDirection  dir  )

static

Definition at line 27 of file polygonoffset.cpp.

                                                                                          {
    float angleStep = 360.0f / n, angle = 0.0f;
    if ((n % 2) == 1) {
        angle = angleStep/2.0f;
    }
    if (SkPathDirection::kCCW == dir) {
        angle = -angle;
        angleStep = -angleStep;
    }
 
    for (int i = 0; i < n; ++i) {
        pts[i].fX = -SkScalarSin(SkDegreesToRadians(angle)) * w;
        pts[i].fY =  SkScalarCos(SkDegreesToRadians(angle)) * h;
        angle += angleStep;
    }
}