The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/gfx/skia/trunk/src/animator/SkDisplayRandom.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,65 @@
     1.4 +
     1.5 +/*
     1.6 + * Copyright 2006 The Android Open Source Project
     1.7 + *
     1.8 + * Use of this source code is governed by a BSD-style license that can be
     1.9 + * found in the LICENSE file.
    1.10 + */
    1.11 +
    1.12 +
    1.13 +#include "SkDisplayRandom.h"
    1.14 +#include "SkInterpolator.h"
    1.15 +
    1.16 +enum SkDisplayRandom_Properties {
    1.17 +    SK_PROPERTY(random),
    1.18 +    SK_PROPERTY(seed)
    1.19 +};
    1.20 +
    1.21 +#if SK_USE_CONDENSED_INFO == 0
    1.22 +
    1.23 +const SkMemberInfo SkDisplayRandom::fInfo[] = {
    1.24 +    SK_MEMBER(blend, Float),
    1.25 +    SK_MEMBER(max, Float),
    1.26 +    SK_MEMBER(min, Float),
    1.27 +    SK_MEMBER_DYNAMIC_PROPERTY(random, Float),
    1.28 +    SK_MEMBER_PROPERTY(seed, Int)
    1.29 +};
    1.30 +
    1.31 +#endif
    1.32 +
    1.33 +DEFINE_GET_MEMBER(SkDisplayRandom);
    1.34 +
    1.35 +SkDisplayRandom::SkDisplayRandom() : blend(0), min(0), max(SK_Scalar1) {
    1.36 +}
    1.37 +
    1.38 +#ifdef SK_DUMP_ENABLED
    1.39 +void SkDisplayRandom::dump(SkAnimateMaker* maker) {
    1.40 +    dumpBase(maker);
    1.41 +    SkDebugf("min=\"%g\" ", SkScalarToFloat(min));
    1.42 +    SkDebugf("max=\"%g\" ", SkScalarToFloat(max));
    1.43 +    SkDebugf("blend=\"%g\" ", SkScalarToFloat(blend));
    1.44 +    SkDebugf("/>\n");
    1.45 +}
    1.46 +#endif
    1.47 +
    1.48 +bool SkDisplayRandom::getProperty(int index, SkScriptValue* value) const {
    1.49 +    switch(index) {
    1.50 +        case SK_PROPERTY(random): {
    1.51 +            SkScalar random = fRandom.nextUScalar1();
    1.52 +            SkScalar relativeT = SkUnitCubicInterp(random, SK_Scalar1 - blend, 0, 0, SK_Scalar1 - blend);
    1.53 +            value->fOperand.fScalar = min + SkScalarMul(max - min, relativeT);
    1.54 +            value->fType = SkType_Float;
    1.55 +            return true;
    1.56 +        }
    1.57 +        default:
    1.58 +            SkASSERT(0);
    1.59 +    }
    1.60 +    return false;
    1.61 +}
    1.62 +
    1.63 +bool SkDisplayRandom::setProperty(int index, SkScriptValue& value) {
    1.64 +    SkASSERT(index == SK_PROPERTY(seed));
    1.65 +    SkASSERT(value.fType == SkType_Int);
    1.66 +    fRandom.setSeed(value.fOperand.fS32);
    1.67 +    return true;
    1.68 +}