Ejemplo n.º 1
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    PaintingData(const SkISize& tileSize, SkScalar seed,
                 SkScalar baseFrequencyX, SkScalar baseFrequencyY,
                 const SkMatrix& matrix)
    {
        SkVector wavelength = SkVector::Make(SkScalarInvert(baseFrequencyX),
                                             SkScalarInvert(baseFrequencyY));
        matrix.mapVectors(&wavelength, 1);
        fBaseFrequency.fX = SkScalarInvert(wavelength.fX);
        fBaseFrequency.fY = SkScalarInvert(wavelength.fY);
        SkVector sizeVec = SkVector::Make(SkIntToScalar(tileSize.fWidth),
                                          SkIntToScalar(tileSize.fHeight));
        matrix.mapVectors(&sizeVec, 1);
        fTileSize.fWidth = SkScalarRoundToInt(sizeVec.fX);
        fTileSize.fHeight = SkScalarRoundToInt(sizeVec.fY);
        this->init(seed);
        if (!fTileSize.isEmpty()) {
            this->stitch();
        }

#if SK_SUPPORT_GPU
        fPermutationsBitmap.setInfo(SkImageInfo::MakeA8(kBlockSize, 1));
        fPermutationsBitmap.setPixels(fLatticeSelector);

        fNoiseBitmap.setInfo(SkImageInfo::MakeN32Premul(kBlockSize, 4));
        fNoiseBitmap.setPixels(fNoise[0][0]);
#endif
    }
Ejemplo n.º 2
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SkIRect SkDisplacementMapEffect::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
                                                    MapDirection) const {
    SkVector scale = SkVector::Make(fScale, fScale);
    ctm.mapVectors(&scale, 1);
    return src.makeOutset(SkScalarCeilToInt(SkScalarAbs(scale.fX) * SK_ScalarHalf),
                          SkScalarCeilToInt(SkScalarAbs(scale.fY) * SK_ScalarHalf));
}
Ejemplo n.º 3
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    PaintingData(const SkISize& tileSize, SkScalar seed,
                 SkScalar baseFrequencyX, SkScalar baseFrequencyY,
                 const SkMatrix& matrix)
    {
        SkVector vec[2] = {
            { SkScalarInvert(baseFrequencyX),   SkScalarInvert(baseFrequencyY)  },
            { SkIntToScalar(tileSize.fWidth),   SkIntToScalar(tileSize.fHeight) },
        };
        matrix.mapVectors(vec, 2);

        fBaseFrequency.set(SkScalarInvert(vec[0].fX), SkScalarInvert(vec[0].fY));
        fTileSize.set(SkScalarRoundToInt(vec[1].fX), SkScalarRoundToInt(vec[1].fY));
        this->init(seed);
        if (!fTileSize.isEmpty()) {
            this->stitch();
        }

#if SK_SUPPORT_GPU
        fPermutationsBitmap.setInfo(SkImageInfo::MakeA8(kBlockSize, 1));
        fPermutationsBitmap.setPixels(fLatticeSelector);

        fNoiseBitmap.setInfo(SkImageInfo::MakeN32Premul(kBlockSize, 4));
        fNoiseBitmap.setPixels(fNoise[0][0]);
#endif
    }
Ejemplo n.º 4
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static SkVector map_sigma(const SkSize& localSigma, const SkMatrix& ctm) {
    SkVector sigma = SkVector::Make(localSigma.width(), localSigma.height());
    ctm.mapVectors(&sigma, 1);
    sigma.fX = SkMinScalar(SkScalarAbs(sigma.fX), MAX_SIGMA);
    sigma.fY = SkMinScalar(SkScalarAbs(sigma.fY), MAX_SIGMA);
    return sigma;
}
Ejemplo n.º 5
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SkIRect SkMorphologyImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
                                                    MapDirection) const {
    SkVector radius = SkVector::Make(SkIntToScalar(this->radius().width()),
                                     SkIntToScalar(this->radius().height()));
    ctm.mapVectors(&radius, 1);
    return src.makeOutset(SkScalarCeilToInt(radius.x()), SkScalarCeilToInt(radius.y()));
}
Ejemplo n.º 6
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void Matrix::NativeMapPoints(
    /* [in] */ Int64 matrixHandle,
    /* [out] */ ArrayOf<Float>* dst,
    /* [in] */ Int32 dstIndex,
    /* [in] */ ArrayOf<Float>* src,
    /* [in] */ Int32 srcIndex,
    /* [in] */ Int32 ptCount,
    /* [in] */ Boolean isPts)
{
    SkASSERT(ptCount >= 0);
    SkASSERT(src->GetLength() >= srcIndex + (ptCount << 1));
    SkASSERT(dst->GetLength() >= dstIndex + (ptCount << 1));

    SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
    // AutoJavaFloatArray autoSrc(env, src, srcIndex + (ptCount << 1), kRO_JNIAccess);
    // AutoJavaFloatArray autoDst(env, dst, dstIndex + (ptCount << 1), kRW_JNIAccess);
    Float* srcArray = src->GetPayload() + srcIndex;
    Float* dstArray = dst->GetPayload() + dstIndex;
#ifdef SK_SCALAR_IS_FLOAT
    if (isPts)
        matrix->mapPoints((SkPoint*)dstArray, (const SkPoint*)srcArray,
                          ptCount);
    else
        matrix->mapVectors((SkVector*)dstArray, (const SkVector*)srcArray,
                           ptCount);
#else
    SkASSERT(FALSE);
#endif
}
Ejemplo n.º 7
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static void calc_dash_scaling(SkScalar* parallelScale, SkScalar* perpScale,
                            const SkMatrix& viewMatrix, const SkPoint pts[2]) {
    SkVector vecSrc = pts[1] - pts[0];
    SkScalar magSrc = vecSrc.length();
    SkScalar invSrc = magSrc ? SkScalarInvert(magSrc) : 0;
    vecSrc.scale(invSrc);

    SkVector vecSrcPerp;
    vecSrc.rotateCW(&vecSrcPerp);
    viewMatrix.mapVectors(&vecSrc, 1);
    viewMatrix.mapVectors(&vecSrcPerp, 1);

    // parallelScale tells how much to scale along the line parallel to the dash line
    // perpScale tells how much to scale in the direction perpendicular to the dash line
    *parallelScale = vecSrc.length();
    *perpScale = vecSrcPerp.length();
}
Ejemplo n.º 8
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void SkDisplacementMapEffect::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
                                   SkIRect* dst, MapDirection) const {
    *dst = src;
    SkVector scale = SkVector::Make(fScale, fScale);
    ctm.mapVectors(&scale, 1);
    dst->outset(SkScalarCeilToInt(scale.fX * SK_ScalarHalf),
                SkScalarCeilToInt(scale.fY * SK_ScalarHalf));
}
bool SkOffsetImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
                                         SkIRect* dst) {
    SkVector vec;
    ctm.mapVectors(&vec, &fOffset, 1);

    *dst = src;
    dst->offset(SkScalarRoundToInt(vec.fX), SkScalarRoundToInt(vec.fY));
    return true;
}
Ejemplo n.º 10
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void SkDropShadowImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
                                                 SkIRect* dst, MapDirection direction) const {
    *dst = src;
    SkVector offsetVec = SkVector::Make(fDx, fDy);
    if (kReverse_MapDirection == direction) {
        offsetVec.negate();
    }
    ctm.mapVectors(&offsetVec, 1);
    dst->offset(SkScalarCeilToInt(offsetVec.x()),
                SkScalarCeilToInt(offsetVec.y()));
    SkVector sigma = SkVector::Make(fSigmaX, fSigmaY);
    ctm.mapVectors(&sigma, 1);
    dst->outset(SkScalarCeilToInt(SkScalarMul(sigma.x(), SkIntToScalar(3))),
                SkScalarCeilToInt(SkScalarMul(sigma.y(), SkIntToScalar(3))));
    if (fShadowMode == kDrawShadowAndForeground_ShadowMode) {
        dst->join(src);
    }
}
Ejemplo n.º 11
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bool SkDropShadowImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
                                             SkIRect* dst) const {
    SkIRect bounds = src;
    if (getInput(0) && !getInput(0)->filterBounds(src, ctm, &bounds)) {
        return false;
    }
    SkVector offsetVec = SkVector::Make(fDx, fDy);
    ctm.mapVectors(&offsetVec, 1);
    bounds.offset(-SkScalarCeilToInt(offsetVec.x()),
                  -SkScalarCeilToInt(offsetVec.y()));
    SkVector sigma = SkVector::Make(fSigmaX, fSigmaY);
    ctm.mapVectors(&sigma, 1);
    bounds.outset(SkScalarCeilToInt(SkScalarMul(sigma.x(), SkIntToScalar(3))),
                  SkScalarCeilToInt(SkScalarMul(sigma.y(), SkIntToScalar(3))));
    bounds.join(src);
    *dst = bounds;
    return true;
}
Ejemplo n.º 12
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SkIRect SkDropShadowImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
                                                    MapDirection direction) const {
    SkVector offsetVec = SkVector::Make(fDx, fDy);
    if (kReverse_MapDirection == direction) {
        offsetVec.negate();
    }
    ctm.mapVectors(&offsetVec, 1);
    SkIRect dst = src.makeOffset(SkScalarCeilToInt(offsetVec.x()),
                                 SkScalarCeilToInt(offsetVec.y()));
    SkVector sigma = SkVector::Make(fSigmaX, fSigmaY);
    ctm.mapVectors(&sigma, 1);
    dst.outset(
        SkScalarCeilToInt(SkScalarAbs(sigma.x() * 3)),
        SkScalarCeilToInt(SkScalarAbs(sigma.y() * 3)));
    if (fShadowMode == kDrawShadowAndForeground_ShadowMode) {
        dst.join(src);
    }
    return dst;
}
Ejemplo n.º 13
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void SkOffsetImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
                                             SkIRect* dst, MapDirection direction) const {
    SkVector vec;
    ctm.mapVectors(&vec, &fOffset, 1);
    if (kReverse_MapDirection == direction) {
        vec.negate();
    }

    *dst = src;
    dst->offset(SkScalarCeilToInt(vec.fX), SkScalarCeilToInt(vec.fY));
}
bool SkOffsetImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& src,
                                        const SkMatrix& matrix,
                                        SkBitmap* result,
                                        SkIPoint* loc) {
    SkVector vec;
    matrix.mapVectors(&vec, &fOffset, 1);

    loc->fX += SkScalarRoundToInt(vec.fX);
    loc->fY += SkScalarRoundToInt(vec.fY);
    *result = src;
    return true;
}
Ejemplo n.º 15
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bool SkBlurImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
                                       SkIRect* dst) const {
    SkIRect bounds = src;
    if (getInput(0) && !getInput(0)->filterBounds(src, ctm, &bounds)) {
        return false;
    }
    SkVector sigma = SkVector::Make(fSigma.width(), fSigma.height());
    ctm.mapVectors(&sigma, 1);
    bounds.outset(SkScalarCeilToInt(SkScalarMul(sigma.x(), SkIntToScalar(3))),
                  SkScalarCeilToInt(SkScalarMul(sigma.y(), SkIntToScalar(3))));
    *dst = bounds;
    return true;
}
Ejemplo n.º 16
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bool SkMorphologyImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
                                             SkIRect* dst) const {
    SkIRect bounds = src;
    SkVector radius = SkVector::Make(SkIntToScalar(this->radius().width()),
                                     SkIntToScalar(this->radius().height()));
    ctm.mapVectors(&radius, 1);
    bounds.outset(SkScalarCeilToInt(radius.x()), SkScalarCeilToInt(radius.y()));
    if (getInput(0) && !getInput(0)->filterBounds(bounds, ctm, &bounds)) {
        return false;
    }
    *dst = bounds;
    return true;
}
Ejemplo n.º 17
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bool SkDisplacementMapEffect::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
                                   SkIRect* dst) const {
    SkIRect bounds = src;
    SkVector scale = SkVector::Make(fScale, fScale);
    ctm.mapVectors(&scale, 1);
    bounds.outset(SkScalarCeilToInt(scale.fX * SK_ScalarHalf),
                  SkScalarCeilToInt(scale.fY * SK_ScalarHalf));
    if (getColorInput()) {
        return getColorInput()->filterBounds(bounds, ctm, dst);
    }
    *dst = bounds;
    return true;
}
Ejemplo n.º 18
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static void compute_rects(SkRect* devOutside, SkRect* devOutsideAssist, SkRect* devInside,
                          bool* isDegenerate, const SkMatrix& viewMatrix, const SkRect& rect,
                          SkScalar strokeWidth, bool miterStroke) {
    SkRect devRect;
    viewMatrix.mapRect(&devRect, rect);

    SkVector devStrokeSize;
    if (strokeWidth > 0) {
        devStrokeSize.set(strokeWidth, strokeWidth);
        viewMatrix.mapVectors(&devStrokeSize, 1);
        devStrokeSize.setAbs(devStrokeSize);
    } else {
        devStrokeSize.set(SK_Scalar1, SK_Scalar1);
    }

    const SkScalar dx = devStrokeSize.fX;
    const SkScalar dy = devStrokeSize.fY;
    const SkScalar rx = SkScalarMul(dx, SK_ScalarHalf);
    const SkScalar ry = SkScalarMul(dy, SK_ScalarHalf);

    *devOutside = devRect;
    *devOutsideAssist = devRect;
    *devInside = devRect;

    devOutside->outset(rx, ry);
    devInside->inset(rx, ry);

    // If we have a degenerate stroking rect(ie the stroke is larger than inner rect) then we
    // make a degenerate inside rect to avoid double hitting.  We will also jam all of the points
    // together when we render these rects.
    SkScalar spare;
    {
        SkScalar w = devRect.width() - dx;
        SkScalar h = devRect.height() - dy;
        spare = SkTMin(w, h);
    }

    *isDegenerate = spare <= 0;
    if (*isDegenerate) {
        devInside->fLeft = devInside->fRight = devRect.centerX();
        devInside->fTop = devInside->fBottom = devRect.centerY();
    }

    // For bevel-stroke, use 2 SkRect instances(devOutside and devOutsideAssist)
    // to draw the outside of the octagon. Because there are 8 vertices on the outer
    // edge, while vertex number of inner edge is 4, the same as miter-stroke.
    if (!miterStroke) {
        devOutside->inset(0, ry);
        devOutsideAssist->outset(0, ry);
    }
}
Ejemplo n.º 19
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bool SkEmbossMaskFilter::filterMask(SkMask* dst, const SkMask& src,
                                    const SkMatrix& matrix, SkIPoint* margin) const {
    SkScalar sigma = matrix.mapRadius(fBlurSigma);

    if (!SkBlurMask::BoxBlur(dst, src, sigma, SkBlurMask::kInner_Style,
                             SkBlurMask::kLow_Quality)) {
        return false;
    }

    dst->fFormat = SkMask::k3D_Format;
    if (margin) {
        margin->set(SkScalarCeilToInt(3*sigma), SkScalarCeilToInt(3*sigma));
    }

    if (src.fImage == NULL) {
        return true;
    }

    // create a larger buffer for the other two channels (should force fBlur to do this for us)

    {
        uint8_t* alphaPlane = dst->fImage;
        size_t   planeSize = dst->computeImageSize();
        if (0 == planeSize) {
            return false;   // too big to allocate, abort
        }
        dst->fImage = SkMask::AllocImage(planeSize * 3);
        memcpy(dst->fImage, alphaPlane, planeSize);
        SkMask::FreeImage(alphaPlane);
    }

    // run the light direction through the matrix...
    Light   light = fLight;
    matrix.mapVectors((SkVector*)(void*)light.fDirection,
                      (SkVector*)(void*)fLight.fDirection, 1);

    // now restore the length of the XY component
    // cast to SkVector so we can call setLength (this double cast silences alias warnings)
    SkVector* vec = (SkVector*)(void*)light.fDirection;
    vec->setLength(light.fDirection[0],
                   light.fDirection[1],
                   SkPoint::Length(fLight.fDirection[0], fLight.fDirection[1]));

    SkEmbossMask::Emboss(dst, light);

    // restore original alpha
    memcpy(dst->fImage, src.fImage, src.computeImageSize());

    return true;
}
void SkOffsetImageFilter::onFilterNodeBounds(const SkIRect& src, const SkMatrix& ctm,
                                             SkIRect* dst, MapDirection direction) const {
    SkVector vec;
    ctm.mapVectors(&vec, &fOffset, 1);
    if (kReverse_MapDirection == direction) {
        vec.negate();
    }

    *dst = src;
    dst->offset(SkScalarCeilToInt(vec.fX), SkScalarCeilToInt(vec.fY));
#ifdef SK_SUPPORT_SRC_BOUNDS_BLOAT_FOR_IMAGEFILTERS
    dst->join(src);
#endif
}
Ejemplo n.º 21
0
    static void mapPoints(JNIEnv* env, jobject clazz, jlong matrixHandle,
                              jfloatArray dst, jint dstIndex,
                              jfloatArray src, jint srcIndex,
                              jint ptCount, jboolean isPts) {
        SkMatrix* matrix = reinterpret_cast<SkMatrix*>(matrixHandle);
        SkASSERT(ptCount >= 0);
        AutoJavaFloatArray autoSrc(env, src, srcIndex + (ptCount << 1), kRO_JNIAccess);
        AutoJavaFloatArray autoDst(env, dst, dstIndex + (ptCount << 1), kRW_JNIAccess);
        float* srcArray = autoSrc.ptr() + srcIndex;
        float* dstArray = autoDst.ptr() + dstIndex;
#ifdef SK_SCALAR_IS_FLOAT
        if (isPts)
            matrix->mapPoints((SkPoint*)dstArray, (const SkPoint*)srcArray,
                              ptCount);
        else
            matrix->mapVectors((SkVector*)dstArray, (const SkVector*)srcArray,
                               ptCount);
#else
        SkASSERT(false);
#endif
    }
Ejemplo n.º 22
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static void test_matrix_min_max_scale(skiatest::Reporter* reporter) {
    SkScalar scales[2];
    bool success;

    SkMatrix identity;
    identity.reset();
    REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMinScale());
    REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMaxScale());
    success = identity.getMinMaxScales(scales);
    REPORTER_ASSERT(reporter, success && SK_Scalar1 == scales[0] && SK_Scalar1 == scales[1]);

    SkMatrix scale;
    scale.setScale(SK_Scalar1 * 2, SK_Scalar1 * 4);
    REPORTER_ASSERT(reporter, SK_Scalar1 * 2 == scale.getMinScale());
    REPORTER_ASSERT(reporter, SK_Scalar1 * 4 == scale.getMaxScale());
    success = scale.getMinMaxScales(scales);
    REPORTER_ASSERT(reporter, success && SK_Scalar1 * 2 == scales[0] && SK_Scalar1 * 4 == scales[1]);

    SkMatrix rot90Scale;
    rot90Scale.setRotate(90 * SK_Scalar1);
    rot90Scale.postScale(SK_Scalar1 / 4, SK_Scalar1 / 2);
    REPORTER_ASSERT(reporter, SK_Scalar1 / 4 == rot90Scale.getMinScale());
    REPORTER_ASSERT(reporter, SK_Scalar1 / 2 == rot90Scale.getMaxScale());
    success = rot90Scale.getMinMaxScales(scales);
    REPORTER_ASSERT(reporter, success && SK_Scalar1 / 4  == scales[0] && SK_Scalar1 / 2 == scales[1]);

    SkMatrix rotate;
    rotate.setRotate(128 * SK_Scalar1);
    REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, rotate.getMinScale(), SK_ScalarNearlyZero));
    REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, rotate.getMaxScale(), SK_ScalarNearlyZero));
    success = rotate.getMinMaxScales(scales);
    REPORTER_ASSERT(reporter, success);
    REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, scales[0], SK_ScalarNearlyZero));
    REPORTER_ASSERT(reporter, SkScalarNearlyEqual(SK_Scalar1, scales[1], SK_ScalarNearlyZero));

    SkMatrix translate;
    translate.setTranslate(10 * SK_Scalar1, -5 * SK_Scalar1);
    REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMinScale());
    REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMaxScale());
    success = translate.getMinMaxScales(scales);
    REPORTER_ASSERT(reporter, success && SK_Scalar1 == scales[0] && SK_Scalar1 == scales[1]);

    SkMatrix perspX;
    perspX.reset();
    perspX.setPerspX(SkScalarToPersp(SK_Scalar1 / 1000));
    REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMinScale());
    REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMaxScale());
    // Verify that getMinMaxScales() doesn't update the scales array on failure.
    scales[0] = -5;
    scales[1] = -5;
    success = perspX.getMinMaxScales(scales);
    REPORTER_ASSERT(reporter, !success && -5 * SK_Scalar1 == scales[0] && -5 * SK_Scalar1  == scales[1]);

    SkMatrix perspY;
    perspY.reset();
    perspY.setPerspY(SkScalarToPersp(-SK_Scalar1 / 500));
    REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMinScale());
    REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMaxScale());
    scales[0] = -5;
    scales[1] = -5;
    success = perspY.getMinMaxScales(scales);
    REPORTER_ASSERT(reporter, !success && -5 * SK_Scalar1 == scales[0] && -5 * SK_Scalar1  == scales[1]);

    SkMatrix baseMats[] = {scale, rot90Scale, rotate,
                           translate, perspX, perspY};
    SkMatrix mats[2*SK_ARRAY_COUNT(baseMats)];
    for (size_t i = 0; i < SK_ARRAY_COUNT(baseMats); ++i) {
        mats[i] = baseMats[i];
        bool invertable = mats[i].invert(&mats[i + SK_ARRAY_COUNT(baseMats)]);
        REPORTER_ASSERT(reporter, invertable);
    }
    SkRandom rand;
    for (int m = 0; m < 1000; ++m) {
        SkMatrix mat;
        mat.reset();
        for (int i = 0; i < 4; ++i) {
            int x = rand.nextU() % SK_ARRAY_COUNT(mats);
            mat.postConcat(mats[x]);
        }

        SkScalar minScale = mat.getMinScale();
        SkScalar maxScale = mat.getMaxScale();
        REPORTER_ASSERT(reporter, (minScale < 0) == (maxScale < 0));
        REPORTER_ASSERT(reporter, (maxScale < 0) == mat.hasPerspective());

        SkScalar scales[2];
        bool success = mat.getMinMaxScales(scales);
        REPORTER_ASSERT(reporter, success == !mat.hasPerspective());
        REPORTER_ASSERT(reporter, !success || (scales[0] == minScale && scales[1] == maxScale));

        if (mat.hasPerspective()) {
            m -= 1; // try another non-persp matrix
            continue;
        }

        // test a bunch of vectors. All should be scaled by between minScale and maxScale
        // (modulo some error) and we should find a vector that is scaled by almost each.
        static const SkScalar gVectorScaleTol = (105 * SK_Scalar1) / 100;
        static const SkScalar gCloseScaleTol = (97 * SK_Scalar1) / 100;
        SkScalar max = 0, min = SK_ScalarMax;
        SkVector vectors[1000];
        for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) {
            vectors[i].fX = rand.nextSScalar1();
            vectors[i].fY = rand.nextSScalar1();
            if (!vectors[i].normalize()) {
                i -= 1;
                continue;
            }
        }
        mat.mapVectors(vectors, SK_ARRAY_COUNT(vectors));
        for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) {
            SkScalar d = vectors[i].length();
            REPORTER_ASSERT(reporter, SkScalarDiv(d, maxScale) < gVectorScaleTol);
            REPORTER_ASSERT(reporter, SkScalarDiv(minScale, d) < gVectorScaleTol);
            if (max < d) {
                max = d;
            }
            if (min > d) {
                min = d;
            }
        }
        REPORTER_ASSERT(reporter, SkScalarDiv(max, maxScale) >= gCloseScaleTol);
        REPORTER_ASSERT(reporter, SkScalarDiv(minScale, min) >= gCloseScaleTol);
    }
}
Ejemplo n.º 23
0
void GrAARectRenderer::StrokeAARect(GrDrawTarget* target,
                                    const GrPipelineBuilder& pipelineBuilder,
                                    GrColor color,
                                    const SkMatrix& viewMatrix,
                                    const SkRect& rect,
                                    const SkRect& devRect,
                                    const SkStrokeRec& stroke) {
    SkVector devStrokeSize;
    SkScalar width = stroke.getWidth();
    if (width > 0) {
        devStrokeSize.set(width, width);
        viewMatrix.mapVectors(&devStrokeSize, 1);
        devStrokeSize.setAbs(devStrokeSize);
    } else {
        devStrokeSize.set(SK_Scalar1, SK_Scalar1);
    }

    const SkScalar dx = devStrokeSize.fX;
    const SkScalar dy = devStrokeSize.fY;
    const SkScalar rx = SkScalarMul(dx, SK_ScalarHalf);
    const SkScalar ry = SkScalarMul(dy, SK_ScalarHalf);

    SkScalar spare;
    {
        SkScalar w = devRect.width() - dx;
        SkScalar h = devRect.height() - dy;
        spare = SkTMin(w, h);
    }

    SkRect devOutside(devRect);
    devOutside.outset(rx, ry);

    bool miterStroke = true;
    // For hairlines, make bevel and round joins appear the same as mitered ones.
    // small miter limit means right angles show bevel...
    if ((width > 0) && (stroke.getJoin() != SkPaint::kMiter_Join ||
                        stroke.getMiter() < SK_ScalarSqrt2)) {
        miterStroke = false;
    }

    if (spare <= 0 && miterStroke) {
        FillAARect(target, pipelineBuilder, color, viewMatrix, devOutside, devOutside);
        return;
    }

    SkRect devInside(devRect);
    devInside.inset(rx, ry);

    SkRect devOutsideAssist(devRect);

    // For bevel-stroke, use 2 SkRect instances(devOutside and devOutsideAssist)
    // to draw the outer of the rect. Because there are 8 vertices on the outer
    // edge, while vertex number of inner edge is 4, the same as miter-stroke.
    if (!miterStroke) {
        devOutside.inset(0, ry);
        devOutsideAssist.outset(0, ry);
    }

    GeometryStrokeAARect(target, pipelineBuilder, color, viewMatrix, devOutside,
                         devOutsideAssist, devInside, miterStroke);
}
Ejemplo n.º 24
0
void GrAARectRenderer::strokeAARect(GrDrawTarget* target,
                                    GrDrawState* drawState,
                                    GrColor color,
                                    const SkRect& rect,
                                    const SkMatrix& combinedMatrix,
                                    const SkRect& devRect,
                                    const SkStrokeRec& stroke) {
    SkVector devStrokeSize;
    SkScalar width = stroke.getWidth();
    if (width > 0) {
        devStrokeSize.set(width, width);
        combinedMatrix.mapVectors(&devStrokeSize, 1);
        devStrokeSize.setAbs(devStrokeSize);
    } else {
        devStrokeSize.set(SK_Scalar1, SK_Scalar1);
    }

    const SkScalar dx = devStrokeSize.fX;
    const SkScalar dy = devStrokeSize.fY;
    const SkScalar rx = SkScalarMul(dx, SK_ScalarHalf);
    const SkScalar ry = SkScalarMul(dy, SK_ScalarHalf);

    // Temporarily #if'ed out. We don't want to pass in the devRect but
    // right now it is computed in GrContext::apply_aa_to_rect and we don't
    // want to throw away the work
#if 0
    SkRect devRect;
    combinedMatrix.mapRect(&devRect, rect);
#endif

    SkScalar spare;
    {
        SkScalar w = devRect.width() - dx;
        SkScalar h = devRect.height() - dy;
        spare = SkTMin(w, h);
    }

    SkRect devOutside(devRect);
    devOutside.outset(rx, ry);

    bool miterStroke = true;
    // For hairlines, make bevel and round joins appear the same as mitered ones.
    // small miter limit means right angles show bevel...
    if ((width > 0) && (stroke.getJoin() != SkPaint::kMiter_Join ||
                        stroke.getMiter() < SK_ScalarSqrt2)) {
        miterStroke = false;
    }

    if (spare <= 0 && miterStroke) {
        this->fillAARect(target, drawState, color, devOutside, SkMatrix::I(), devOutside);
        return;
    }

    SkRect devInside(devRect);
    devInside.inset(rx, ry);

    SkRect devOutsideAssist(devRect);

    // For bevel-stroke, use 2 SkRect instances(devOutside and devOutsideAssist)
    // to draw the outer of the rect. Because there are 8 vertices on the outer
    // edge, while vertex number of inner edge is 4, the same as miter-stroke.
    if (!miterStroke) {
        devOutside.inset(0, ry);
        devOutsideAssist.outset(0, ry);
    }

    this->geometryStrokeAARect(target, drawState, color, devOutside, devOutsideAssist, devInside,
                               miterStroke);
}
Ejemplo n.º 25
0
static void test_matrix_max_stretch(skiatest::Reporter* reporter) {
    SkMatrix identity;
    identity.reset();
    REPORTER_ASSERT(reporter, SK_Scalar1 == identity.getMaxStretch());

    SkMatrix scale;
    scale.setScale(SK_Scalar1 * 2, SK_Scalar1 * 4);
    REPORTER_ASSERT(reporter, SK_Scalar1 * 4 == scale.getMaxStretch());

    SkMatrix rot90Scale;
    rot90Scale.setRotate(90 * SK_Scalar1);
    rot90Scale.postScale(SK_Scalar1 / 4, SK_Scalar1 / 2);
    REPORTER_ASSERT(reporter, SK_Scalar1 / 2 == rot90Scale.getMaxStretch());

    SkMatrix rotate;
    rotate.setRotate(128 * SK_Scalar1);
    REPORTER_ASSERT(reporter, SkScalarAbs(SK_Scalar1 - rotate.getMaxStretch()) <= SK_ScalarNearlyZero);

    SkMatrix translate;
    translate.setTranslate(10 * SK_Scalar1, -5 * SK_Scalar1);
    REPORTER_ASSERT(reporter, SK_Scalar1 == translate.getMaxStretch());

    SkMatrix perspX;
    perspX.reset();
    perspX.setPerspX(SkScalarToPersp(SK_Scalar1 / 1000));
    REPORTER_ASSERT(reporter, -SK_Scalar1 == perspX.getMaxStretch());

    SkMatrix perspY;
    perspY.reset();
    perspY.setPerspX(SkScalarToPersp(-SK_Scalar1 / 500));
    REPORTER_ASSERT(reporter, -SK_Scalar1 == perspY.getMaxStretch());

    SkMatrix baseMats[] = {scale, rot90Scale, rotate,
                           translate, perspX, perspY};
    SkMatrix mats[2*SK_ARRAY_COUNT(baseMats)];
    for (size_t i = 0; i < SK_ARRAY_COUNT(baseMats); ++i) {
        mats[i] = baseMats[i];
        bool invertable = mats[i].invert(&mats[i + SK_ARRAY_COUNT(baseMats)]);
        REPORTER_ASSERT(reporter, invertable);
    }
    SkMWCRandom rand;
    for (int m = 0; m < 1000; ++m) {
        SkMatrix mat;
        mat.reset();
        for (int i = 0; i < 4; ++i) {
            int x = rand.nextU() % SK_ARRAY_COUNT(mats);
            mat.postConcat(mats[x]);
        }
        SkScalar stretch = mat.getMaxStretch();

        if ((stretch < 0) != mat.hasPerspective()) {
            stretch = mat.getMaxStretch();
        }

        REPORTER_ASSERT(reporter, (stretch < 0) == mat.hasPerspective());

        if (mat.hasPerspective()) {
            m -= 1; // try another non-persp matrix
            continue;
        }

        // test a bunch of vectors. None should be scaled by more than stretch
        // (modulo some error) and we should find a vector that is scaled by
        // almost stretch.
        static const SkScalar gStretchTol = (105 * SK_Scalar1) / 100;
        static const SkScalar gMaxStretchTol = (97 * SK_Scalar1) / 100;
        SkScalar max = 0;
        SkVector vectors[1000];
        for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) {
            vectors[i].fX = rand.nextSScalar1();
            vectors[i].fY = rand.nextSScalar1();
            if (!vectors[i].normalize()) {
                i -= 1;
                continue;
            }
        }
        mat.mapVectors(vectors, SK_ARRAY_COUNT(vectors));
        for (size_t i = 0; i < SK_ARRAY_COUNT(vectors); ++i) {
            SkScalar d = vectors[i].length();
            REPORTER_ASSERT(reporter, SkScalarDiv(d, stretch) < gStretchTol);
            if (max < d) {
                max = d;
            }
        }
        REPORTER_ASSERT(reporter, SkScalarDiv(max, stretch) >= gMaxStretchTol);
    }
}
Ejemplo n.º 26
0
bool SkOffsetImageFilter::onFilterImage(Proxy* proxy, const SkBitmap& source,
                                        const SkMatrix& matrix,
                                        SkBitmap* result,
                                        SkIPoint* offset) const {
    SkImageFilter* input = getInput(0);
    SkBitmap src = source;
    SkIPoint srcOffset = SkIPoint::Make(0, 0);
#ifdef SK_DISABLE_OFFSETIMAGEFILTER_OPTIMIZATION
    if (false) {
#else
    if (!cropRectIsSet()) {
#endif
        if (input && !input->filterImage(proxy, source, matrix, &src, &srcOffset)) {
            return false;
        }

        SkVector vec;
        matrix.mapVectors(&vec, &fOffset, 1);

        offset->fX = srcOffset.fX + SkScalarRoundToInt(vec.fX);
        offset->fY = srcOffset.fY + SkScalarRoundToInt(vec.fY);
        *result = src;
    } else {
        if (input && !input->filterImage(proxy, source, matrix, &src, &srcOffset)) {
            return false;
        }

        SkIRect bounds;
        src.getBounds(&bounds);
        bounds.offset(srcOffset);

        if (!applyCropRect(&bounds, matrix)) {
            return false;
        }

        SkAutoTUnref<SkBaseDevice> device(proxy->createDevice(bounds.width(), bounds.height()));
        if (NULL == device.get()) {
            return false;
        }
        SkCanvas canvas(device);
        SkPaint paint;
        paint.setXfermodeMode(SkXfermode::kSrc_Mode);
        canvas.translate(SkIntToScalar(srcOffset.fX - bounds.fLeft),
                         SkIntToScalar(srcOffset.fY - bounds.fTop));
        canvas.drawBitmap(src, fOffset.x(), fOffset.y(), &paint);
        *result = device->accessBitmap(false);
        offset->fX = bounds.fLeft;
        offset->fY = bounds.fTop;
    }
    return true;
}

void SkOffsetImageFilter::computeFastBounds(const SkRect& src, SkRect* dst) const {
    if (getInput(0)) {
        getInput(0)->computeFastBounds(src, dst);
    } else {
        *dst = src;
    }
    SkRect copy = *dst;
    dst->offset(fOffset.fX, fOffset.fY);
    dst->join(copy);
}

bool SkOffsetImageFilter::onFilterBounds(const SkIRect& src, const SkMatrix& ctm,
                                         SkIRect* dst) const {
    SkVector vec;
    ctm.mapVectors(&vec, &fOffset, 1);

    *dst = src;
    dst->offset(-SkScalarCeilToInt(vec.fX), -SkScalarCeilToInt(vec.fY));
    dst->join(src);
    return true;
}