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/* libs/graphics/animator/SkDisplayRandom.cpp
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include "SkDisplayRandom.h"
#include "SkInterpolator.h"
enum SkDisplayRandom_Properties {
SK_PROPERTY(random),
SK_PROPERTY(seed)
};
#if SK_USE_CONDENSED_INFO == 0
const SkMemberInfo SkDisplayRandom::fInfo[] = {
SK_MEMBER(blend, Float),
SK_MEMBER(max, Float),
SK_MEMBER(min, Float),
SK_MEMBER_DYNAMIC_PROPERTY(random, Float),
SK_MEMBER_PROPERTY(seed, Int)
};
#endif
DEFINE_GET_MEMBER(SkDisplayRandom);
SkDisplayRandom::SkDisplayRandom() : blend(0), min(0), max(SK_Scalar1) {
}
#ifdef SK_DUMP_ENABLED
void SkDisplayRandom::dump(SkAnimateMaker* maker) {
dumpBase(maker);
#ifdef SK_CAN_USE_FLOAT
SkDebugf("min=\"%g\" ", SkScalarToFloat(min));
SkDebugf("max=\"%g\" ", SkScalarToFloat(max));
SkDebugf("blend=\"%g\" ", SkScalarToFloat(blend));
#else
SkDebugf("min=\"%x\" ", min);
SkDebugf("max=\"%x\" ", max);
SkDebugf("blend=\"%x\" ", blend);
#endif
SkDebugf("/>\n");
}
#endif
bool SkDisplayRandom::getProperty(int index, SkScriptValue* value) const {
switch(index) {
case SK_PROPERTY(random): {
SkScalar random = fRandom.nextUScalar1();
SkScalar relativeT = SkUnitCubicInterp(random, SK_Scalar1 - blend, 0, 0, SK_Scalar1 - blend);
value->fOperand.fScalar = min + SkScalarMul(max - min, relativeT);
value->fType = SkType_Float;
return true;
}
default:
SkASSERT(0);
}
return false;
}
bool SkDisplayRandom::setProperty(int index, SkScriptValue& value) {
SkASSERT(index == SK_PROPERTY(seed));
SkASSERT(value.fType == SkType_Int);
fRandom.setSeed(value.fOperand.fS32);
return true;
}
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