SkPatchUtils.cpp File Reference

#include "src/utils/SkPatchUtils.h"
#include "include/core/SkAlphaType.h"
#include "include/core/SkColorSpace.h"
#include "include/core/SkColorType.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPoint.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkTypes.h"
#include "include/core/SkVertices.h"
#include "include/private/SkColorData.h"
#include "include/private/base/SkFloatingPoint.h"
#include "include/private/base/SkMath.h"
#include "include/private/base/SkTPin.h"
#include "include/private/base/SkTo.h"
#include "src/base/SkArenaAlloc.h"
#include "src/base/SkVx.h"
#include "src/core/SkColorSpacePriv.h"
#include "src/core/SkConvertPixels.h"
#include "src/core/SkGeometry.h"
#include <algorithm>
#include <cstdint>
#include <cstring>

Go to the source code of this file.

Classes
class	FwDCubicEvaluator

Functions
static SkScalar	approx_arc_length (const SkPoint points[], int count)
static SkScalar	bilerp (SkScalar tx, SkScalar ty, SkScalar c00, SkScalar c10, SkScalar c01, SkScalar c11)
static skvx::float4	bilerp (SkScalar tx, SkScalar ty, const skvx::float4 &c00, const skvx::float4 &c10, const skvx::float4 &c01, const skvx::float4 &c11)
static void	skcolor_to_float (SkPMColor4f *dst, const SkColor *src, int count, SkColorSpace *dstCS)
static void	float_to_skcolor (SkColor *dst, const SkPMColor4f *src, int count, SkColorSpace *srcCS)

Variables
static const int	kPartitionSize = 10

Function Documentation

approx_arc_length()

static SkScalar approx_arc_length ( const SkPoint  points[], int  count  )

static

Calculate the approximate arc length given a bezier curve's control points. Returns -1 if bad calc (i.e. non-finite)

Definition at line 154 of file SkPatchUtils.cpp.

                                                                     {
    if (count < 2) {
        return 0;
    }
    SkScalar arcLength = 0;
    for (int i = 0; i < count - 1; i++) {
        arcLength += SkPoint::Distance(points[i], points[i + 1]);
    }
    return SkIsFinite(arcLength) ? arcLength : -1;
}

bilerp() [1/2]

static skvx::float4 bilerp ( SkScalar  tx, SkScalar  ty, const skvx::float4 &  c00, const skvx::float4 &  c10, const skvx::float4 &  c01, const skvx::float4 &  c11  )

static

Definition at line 172 of file SkPatchUtils.cpp.

                                                  {
    auto a = c00 * (1.f - tx) + c10 * tx;
    auto b = c01 * (1.f - tx) + c11 * tx;
    return a * (1.f - ty) + b * ty;
}

bilerp() [2/2]

static SkScalar bilerp ( SkScalar  tx, SkScalar  ty, SkScalar  c00, SkScalar  c10, SkScalar  c01, SkScalar  c11  )

static

Definition at line 165 of file SkPatchUtils.cpp.

                                     {
    SkScalar a = c00 * (1.f - tx) + c10 * tx;
    SkScalar b = c01 * (1.f - tx) + c11 * tx;
    return a * (1.f - ty) + b * ty;
}

float_to_skcolor()

static void float_to_skcolor ( SkColor *  dst, const SkPMColor4f *  src, int  count, SkColorSpace *  srcCS  )

static

Definition at line 248 of file SkPatchUtils.cpp.

                                                                                                   {
    SkImageInfo srcInfo = SkImageInfo::Make(count, 1, kRGBA_F32_SkColorType,
                                            kPremul_SkAlphaType, sk_ref_sp(srcCS));
    SkImageInfo dstInfo = SkImageInfo::Make(count, 1, kBGRA_8888_SkColorType,
                                            kUnpremul_SkAlphaType, SkColorSpace::MakeSRGB());
    SkAssertResult(SkConvertPixels(dstInfo, dst, 0, srcInfo, src, 0));
}

skcolor_to_float()

static void skcolor_to_float ( SkPMColor4f *  dst, const SkColor *  src, int  count, SkColorSpace *  dstCS  )

static

Definition at line 240 of file SkPatchUtils.cpp.

                                                                                                   {
    SkImageInfo srcInfo = SkImageInfo::Make(count, 1, kBGRA_8888_SkColorType,
                                            kUnpremul_SkAlphaType, SkColorSpace::MakeSRGB());
    SkImageInfo dstInfo = SkImageInfo::Make(count, 1, kRGBA_F32_SkColorType,
                                            kPremul_SkAlphaType, sk_ref_sp(dstCS));
    SkAssertResult(SkConvertPixels(dstInfo, dst, 0, srcInfo, src, 0));
}

Variable Documentation

kPartitionSize

const int kPartitionSize = 10

static

Definition at line 148 of file SkPatchUtils.cpp.