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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "SVGIntegerPairSMILType.h"
#include "mozilla/SMILValue.h"
#include "nsMathUtils.h"
#include "nsDebug.h"
namespace mozilla {
void SVGIntegerPairSMILType::Init(SMILValue& aValue) const {
MOZ_ASSERT(aValue.IsNull(), "Unexpected value type");
aValue.mU.mIntPair[0] = 0;
aValue.mU.mIntPair[1] = 0;
aValue.mType = this;
}
void SVGIntegerPairSMILType::Destroy(SMILValue& aValue) const {
MOZ_ASSERT(aValue.mType == this, "Unexpected SMIL value");
aValue.mU.mIntPair[0] = 0;
aValue.mU.mIntPair[1] = 0;
aValue.mType = SMILNullType::Singleton();
}
nsresult SVGIntegerPairSMILType::Assign(SMILValue& aDest,
const SMILValue& aSrc) const {
MOZ_ASSERT(aDest.mType == aSrc.mType, "Incompatible SMIL types");
MOZ_ASSERT(aDest.mType == this, "Unexpected SMIL value");
aDest.mU.mIntPair[0] = aSrc.mU.mIntPair[0];
aDest.mU.mIntPair[1] = aSrc.mU.mIntPair[1];
return NS_OK;
}
bool SVGIntegerPairSMILType::IsEqual(const SMILValue& aLeft,
const SMILValue& aRight) const {
MOZ_ASSERT(aLeft.mType == aRight.mType, "Incompatible SMIL types");
MOZ_ASSERT(aLeft.mType == this, "Unexpected type for SMIL value");
return aLeft.mU.mIntPair[0] == aRight.mU.mIntPair[0] &&
aLeft.mU.mIntPair[1] == aRight.mU.mIntPair[1];
}
nsresult SVGIntegerPairSMILType::Add(SMILValue& aDest,
const SMILValue& aValueToAdd,
uint32_t aCount) const {
MOZ_ASSERT(aValueToAdd.mType == aDest.mType, "Trying to add invalid types");
MOZ_ASSERT(aValueToAdd.mType == this, "Unexpected source type");
aDest.mU.mIntPair[0] += aValueToAdd.mU.mIntPair[0] * aCount;
aDest.mU.mIntPair[1] += aValueToAdd.mU.mIntPair[1] * aCount;
return NS_OK;
}
nsresult SVGIntegerPairSMILType::ComputeDistance(const SMILValue& aFrom,
const SMILValue& aTo,
double& aDistance) const {
MOZ_ASSERT(aFrom.mType == aTo.mType, "Trying to compare different types");
MOZ_ASSERT(aFrom.mType == this, "Unexpected source type");
double delta[2];
delta[0] = aTo.mU.mIntPair[0] - aFrom.mU.mIntPair[0];
delta[1] = aTo.mU.mIntPair[1] - aFrom.mU.mIntPair[1];
aDistance = NS_hypot(delta[0], delta[1]);
return NS_OK;
}
nsresult SVGIntegerPairSMILType::Interpolate(const SMILValue& aStartVal,
const SMILValue& aEndVal,
double aUnitDistance,
SMILValue& aResult) const {
MOZ_ASSERT(aStartVal.mType == aEndVal.mType,
"Trying to interpolate different types");
MOZ_ASSERT(aStartVal.mType == this, "Unexpected types for interpolation");
MOZ_ASSERT(aResult.mType == this, "Unexpected result type");
double currentVal[2];
currentVal[0] =
aStartVal.mU.mIntPair[0] +
(aEndVal.mU.mIntPair[0] - aStartVal.mU.mIntPair[0]) * aUnitDistance;
currentVal[1] =
aStartVal.mU.mIntPair[1] +
(aEndVal.mU.mIntPair[1] - aStartVal.mU.mIntPair[1]) * aUnitDistance;
aResult.mU.mIntPair[0] = NS_lround(currentVal[0]);
aResult.mU.mIntPair[1] = NS_lround(currentVal[1]);
return NS_OK;
}
} // namespace mozilla
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