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 #ifndef META_EXT_INTERPOLATOR_H
16 #define META_EXT_INTERPOLATOR_H
17 
18 #include <meta/api/util.h>
19 #include <meta/base/namespace.h>
20 #include <meta/ext/object.h>
21 #include <meta/interface/animation/intf_interpolator.h>
22 
23 META_BEGIN_NAMESPACE()
24 
25 /**
26  * @brief A default implementation template for an interpolator for a given type.
27  */
28 template<class Type, class Name, const META_NS::ClassInfo& ClassId>
29 class Interpolator : public META_NS::BaseObjectFwd<Name, ClassId, META_NS::ClassId::BaseObject, IInterpolator> {
30 public:
31     AnyReturnValue Interpolate(IAny& output, const IAny& from, const IAny& to, float t) const override
32     {
33         if (IsGetCompatibleWith<Type>(output) && IsGetCompatibleWith<Type>(from) && IsGetCompatibleWith<Type>(to)) {
34             Type value0 = GetValue<Type>(from);
35             Type value1 = GetValue<Type>(to);
36             return output.SetValue<Type>(value0 + (value1 - value0) * t);
37         }
38         return AnyReturn::INCOMPATIBLE_TYPE;
39     }
40     bool IsCompatibleWith(TypeId id) const noexcept override
41     {
42         return id == UidFromType<Type>();
43     }
44 };
45 
46 META_END_NAMESPACE()
47 
48 #endif
49