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 #ifndef META_INTERFACE_ICURVE_H
17 #define META_INTERFACE_ICURVE_H
18 
19 #include <meta/base/namespace.h>
20 #include <meta/interface/intf_object.h>
21 
22 META_BEGIN_NAMESPACE()
23 
24 META_REGISTER_INTERFACE(ICurve, "9ec41bb4-d5a9-4c18-afa4-686908e76adb")
25 
26 /**
27  * @brief ICurve is the base interface for all curves. A curve transforms a parameter
28  *        along a curve, specified by each class which implements the ICurve interface.
29  */
30 template<class T>
31 class ICurve : public CORE_NS::IInterface {
32     META_INTERFACE(CORE_NS::IInterface, ICurve)
33 public:
34     /**
35      * @brief The transformation function for this curve. Transform function should be
36      *        re-entrant.
37      * @param t The point along the curve where the transformation should happen.
38      * @return Transformed value.
39      */
40     virtual T Transform(float t) const = 0;
41 };
42 
43 META_END_NAMESPACE()
44 
45 #endif
46