1 /* 2 * Copyright (c) 2024 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 17 #ifndef META_EXT_INTERPOLATOR_H 18 #define META_EXT_INTERPOLATOR_H 19 20 #include <meta/api/util.h> 21 #include <meta/base/namespace.h> 22 #include <meta/ext/base_object.h> 23 #include <meta/interface/animation/intf_interpolator.h> 24 META_BEGIN_NAMESPACE()25META_BEGIN_NAMESPACE() 26 27 /** 28 * @brief A default implementation template for an interpolator for a given type. 29 */ 30 template<class Type> 31 class Interpolator : public IntroduceInterfaces<BaseObject, IInterpolator> { 32 public: 33 AnyReturnValue Interpolate(IAny& output, const IAny& from, const IAny& to, float t) const override 34 { 35 if (IsGetCompatibleWith<Type>(output) && IsGetCompatibleWith<Type>(from) && IsGetCompatibleWith<Type>(to)) { 36 Type value0 = GetValue<Type>(from); 37 Type value1 = GetValue<Type>(to); 38 return output.SetValue<Type>(value0 + (value1 - value0) * t); 39 } 40 return AnyReturn::INCOMPATIBLE_TYPE; 41 } 42 bool IsCompatibleWith(TypeId id) const noexcept override 43 { 44 return id == UidFromType<Type>(); 45 } 46 }; 47 48 META_END_NAMESPACE() 49 50 #endif 51