SkShadowUtils.cpp File Reference

#include "include/utils/SkShadowUtils.h"
#include "include/core/SkBlendMode.h"
#include "include/core/SkBlender.h"
#include "include/core/SkBlurTypes.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColorFilter.h"
#include "include/core/SkMaskFilter.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPath.h"
#include "include/core/SkPoint.h"
#include "include/core/SkPoint3.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkVertices.h"
#include "include/private/SkIDChangeListener.h"
#include "include/private/base/SkFloatingPoint.h"
#include "include/private/base/SkTPin.h"
#include "include/private/base/SkTemplates.h"
#include "include/private/base/SkTo.h"
#include "src/base/SkRandom.h"
#include "src/core/SkBlurMask.h"
#include "src/core/SkColorFilterPriv.h"
#include "src/core/SkDevice.h"
#include "src/core/SkDrawShadowInfo.h"
#include "src/core/SkPathPriv.h"
#include "src/core/SkResourceCache.h"
#include "src/core/SkVerticesPriv.h"
#include "src/utils/SkShadowTessellator.h"
#include <algorithm>
#include <cstring>
#include <functional>
#include <memory>
#include <new>
#include <utility>

Go to the source code of this file.

Functions
static bool	tilted (const SkPoint3 &zPlaneParams)
static bool	fill_shadow_rec (const SkPath &path, const SkPoint3 &zPlaneParams, const SkPoint3 &lightPos, SkScalar lightRadius, SkColor ambientColor, SkColor spotColor, uint32_t flags, const SkMatrix &ctm, SkDrawShadowRec *rec)
static bool	validate_rec (const SkDrawShadowRec &rec)

Function Documentation

fill_shadow_rec()

static bool fill_shadow_rec ( const SkPath &  path, const SkPoint3 &  zPlaneParams, const SkPoint3 &  lightPos, SkScalar  lightRadius, SkColor  ambientColor, SkColor  spotColor, uint32_t  flags, const SkMatrix &  ctm, SkDrawShadowRec *  rec  )

static

Definition at line 533 of file SkShadowUtils.cpp.

                                                                                       {
    SkPoint pt = { lightPos.fX, lightPos.fY };
    if (!SkToBool(flags & kDirectionalLight_ShadowFlag)) {
        // If light position is in device space, need to transform to local space
        // before applying to SkCanvas.
        SkMatrix inverse;
        if (!ctm.invert(&inverse)) {
            return false;
        }
        inverse.mapPoints(&pt, 1);
    }
 
    rec->fZPlaneParams   = zPlaneParams;
    rec->fLightPos       = { pt.fX, pt.fY, lightPos.fZ };
    rec->fLightRadius    = lightRadius;
    rec->fAmbientColor   = ambientColor;
    rec->fSpotColor      = spotColor;
    rec->fFlags          = flags;
 
    return true;
}

tilted()

static bool tilted ( const SkPoint3 &  zPlaneParams )

static

Definition at line 473 of file SkShadowUtils.cpp.

                                                 {
    return !SkScalarNearlyZero(zPlaneParams.fX) || !SkScalarNearlyZero(zPlaneParams.fY);
}

validate_rec()

static bool validate_rec ( const SkDrawShadowRec &  rec )

static

Definition at line 588 of file SkShadowUtils.cpp.

                                                     {
    return rec.fLightPos.isFinite() && rec.fZPlaneParams.isFinite() &&
           SkIsFinite(rec.fLightRadius);
}