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
META_BEGIN_NAMESPACE()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