//
// Copyright 2016 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
//    names, trademarks, service marks, or product names of the Licensor
//    and its affiliates, except as required to comply with Section 4(c) of
//    the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#include "pxr/usd/usdSkel/animation.h"
#include "pxr/usd/usd/schemaRegistry.h"
#include "pxr/usd/usd/typed.h"

#include "pxr/usd/sdf/types.h"
#include "pxr/usd/sdf/assetPath.h"

PXR_NAMESPACE_OPEN_SCOPE

// Register the schema with the TfType system.
TF_REGISTRY_FUNCTION(TfType)
{
    TfType::Define<UsdSkelAnimation,
        TfType::Bases< UsdTyped > >();
    
    // Register the usd prim typename as an alias under UsdSchemaBase. This
    // enables one to call
    // TfType::Find<UsdSchemaBase>().FindDerivedByName("SkelAnimation")
    // to find TfType<UsdSkelAnimation>, which is how IsA queries are
    // answered.
    TfType::AddAlias<UsdSchemaBase, UsdSkelAnimation>("SkelAnimation");
}

/* virtual */
UsdSkelAnimation::~UsdSkelAnimation()
{
}

/* static */
UsdSkelAnimation
UsdSkelAnimation::Get(const UsdStagePtr &stage, const SdfPath &path)
{
    if (!stage) {
        TF_CODING_ERROR("Invalid stage");
        return UsdSkelAnimation();
    }
    return UsdSkelAnimation(stage->GetPrimAtPath(path));
}

/* static */
UsdSkelAnimation
UsdSkelAnimation::Define(
    const UsdStagePtr &stage, const SdfPath &path)
{
    static TfToken usdPrimTypeName("SkelAnimation");
    if (!stage) {
        TF_CODING_ERROR("Invalid stage");
        return UsdSkelAnimation();
    }
    return UsdSkelAnimation(
        stage->DefinePrim(path, usdPrimTypeName));
}

/* virtual */
UsdSchemaType UsdSkelAnimation::_GetSchemaType() const {
    return UsdSkelAnimation::schemaType;
}

/* static */
const TfType &
UsdSkelAnimation::_GetStaticTfType()
{
    static TfType tfType = TfType::Find<UsdSkelAnimation>();
    return tfType;
}

/* static */
bool 
UsdSkelAnimation::_IsTypedSchema()
{
    static bool isTyped = _GetStaticTfType().IsA<UsdTyped>();
    return isTyped;
}

/* virtual */
const TfType &
UsdSkelAnimation::_GetTfType() const
{
    return _GetStaticTfType();
}

UsdAttribute
UsdSkelAnimation::GetJointsAttr() const
{
    return GetPrim().GetAttribute(UsdSkelTokens->joints);
}

UsdAttribute
UsdSkelAnimation::CreateJointsAttr(VtValue const &defaultValue, bool writeSparsely) const
{
    return UsdSchemaBase::_CreateAttr(UsdSkelTokens->joints,
                       SdfValueTypeNames->TokenArray,
                       /* custom = */ false,
                       SdfVariabilityUniform,
                       defaultValue,
                       writeSparsely);
}

UsdAttribute
UsdSkelAnimation::GetTranslationsAttr() const
{
    return GetPrim().GetAttribute(UsdSkelTokens->translations);
}

UsdAttribute
UsdSkelAnimation::CreateTranslationsAttr(VtValue const &defaultValue, bool writeSparsely) const
{
    return UsdSchemaBase::_CreateAttr(UsdSkelTokens->translations,
                       SdfValueTypeNames->Float3Array,
                       /* custom = */ false,
                       SdfVariabilityVarying,
                       defaultValue,
                       writeSparsely);
}

UsdAttribute
UsdSkelAnimation::GetRotationsAttr() const
{
    return GetPrim().GetAttribute(UsdSkelTokens->rotations);
}

UsdAttribute
UsdSkelAnimation::CreateRotationsAttr(VtValue const &defaultValue, bool writeSparsely) const
{
    return UsdSchemaBase::_CreateAttr(UsdSkelTokens->rotations,
                       SdfValueTypeNames->QuatfArray,
                       /* custom = */ false,
                       SdfVariabilityVarying,
                       defaultValue,
                       writeSparsely);
}

UsdAttribute
UsdSkelAnimation::GetScalesAttr() const
{
    return GetPrim().GetAttribute(UsdSkelTokens->scales);
}

UsdAttribute
UsdSkelAnimation::CreateScalesAttr(VtValue const &defaultValue, bool writeSparsely) const
{
    return UsdSchemaBase::_CreateAttr(UsdSkelTokens->scales,
                       SdfValueTypeNames->Half3Array,
                       /* custom = */ false,
                       SdfVariabilityVarying,
                       defaultValue,
                       writeSparsely);
}

UsdAttribute
UsdSkelAnimation::GetBlendShapesAttr() const
{
    return GetPrim().GetAttribute(UsdSkelTokens->blendShapes);
}

UsdAttribute
UsdSkelAnimation::CreateBlendShapesAttr(VtValue const &defaultValue, bool writeSparsely) const
{
    return UsdSchemaBase::_CreateAttr(UsdSkelTokens->blendShapes,
                       SdfValueTypeNames->TokenArray,
                       /* custom = */ false,
                       SdfVariabilityUniform,
                       defaultValue,
                       writeSparsely);
}

UsdAttribute
UsdSkelAnimation::GetBlendShapeWeightsAttr() const
{
    return GetPrim().GetAttribute(UsdSkelTokens->blendShapeWeights);
}

UsdAttribute
UsdSkelAnimation::CreateBlendShapeWeightsAttr(VtValue const &defaultValue, bool writeSparsely) const
{
    return UsdSchemaBase::_CreateAttr(UsdSkelTokens->blendShapeWeights,
                       SdfValueTypeNames->FloatArray,
                       /* custom = */ false,
                       SdfVariabilityVarying,
                       defaultValue,
                       writeSparsely);
}

namespace {
static inline TfTokenVector
_ConcatenateAttributeNames(const TfTokenVector& left,const TfTokenVector& right)
{
    TfTokenVector result;
    result.reserve(left.size() + right.size());
    result.insert(result.end(), left.begin(), left.end());
    result.insert(result.end(), right.begin(), right.end());
    return result;
}
}

/*static*/
const TfTokenVector&
UsdSkelAnimation::GetSchemaAttributeNames(bool includeInherited)
{
    static TfTokenVector localNames = {
        UsdSkelTokens->joints,
        UsdSkelTokens->translations,
        UsdSkelTokens->rotations,
        UsdSkelTokens->scales,
        UsdSkelTokens->blendShapes,
        UsdSkelTokens->blendShapeWeights,
    };
    static TfTokenVector allNames =
        _ConcatenateAttributeNames(
            UsdTyped::GetSchemaAttributeNames(true),
            localNames);

    if (includeInherited)
        return allNames;
    else
        return localNames;
}

PXR_NAMESPACE_CLOSE_SCOPE

// ===================================================================== //
// Feel free to add custom code below this line. It will be preserved by
// the code generator.
//
// Just remember to wrap code in the appropriate delimiters:
// 'PXR_NAMESPACE_OPEN_SCOPE', 'PXR_NAMESPACE_CLOSE_SCOPE'.
// ===================================================================== //
// --(BEGIN CUSTOM CODE)--

#include "pxr/usd/usdSkel/utils.h"

PXR_NAMESPACE_OPEN_SCOPE

bool
UsdSkelAnimation::GetTransforms(VtMatrix4dArray* xforms, UsdTimeCode time) const
{
    VtVec3fArray translations;
    if (GetTranslationsAttr().Get(&translations, time)) {
        VtQuatfArray rotations;
        if (GetRotationsAttr().Get(&rotations, time)) {
            VtVec3hArray scales;
            if (GetScalesAttr().Get(&scales, time)) {
                return UsdSkelMakeTransforms(translations, rotations,
                                             scales, xforms);
            }
        }
    }
    return false;
}


bool
UsdSkelAnimation::SetTransforms(const VtMatrix4dArray& xforms,
                                UsdTimeCode time) const
{
    VtVec3fArray translations;
    VtQuatfArray rotations;
    VtVec3hArray scales;
    if (UsdSkelDecomposeTransforms(xforms, &translations,
                                   &rotations, &scales)) {
        return GetTranslationsAttr().Set(translations, time) &
               GetRotationsAttr().Set(rotations, time) &
               GetScalesAttr().Set(scales, time);
    }
    return false;
}

PXR_NAMESPACE_CLOSE_SCOPE