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_1D_H
17 #define META_INTERFACE_ICURVE_1D_H
18 
19 #include <meta/base/namespace.h>
20 #include <meta/interface/curves/intf_curve.h>
21 
22 META_BEGIN_NAMESPACE()
23 
24 META_REGISTER_INTERFACE(ICurve1D, "3752a2b4-0972-4af3-a20d-7832ed60c65f")
25 
26 /**
27  * @brief ICurve1D is the base interface for all 1D curves which transform
28  *        a one-dimensional curve along an axis.
29  *
30  *        A specialization of ICurve1D is IEasingCurve, which adds the requirement
31  *        that the easing curve starts at 0 and ends at 1.
32  */
33 class ICurve1D : public ICurve<float> {
34     META_INTERFACE(ICurve<float>, ICurve1D)
35 public:
36     /**
37      * @brief The transformation function for this curve.
38      * @param t The point along the curve where the transformation should happen.
39      * @return Transformed value.
40      */
41     float Transform(float t) const override = 0;
42 };
43 
44 META_END_NAMESPACE()
45 
46 META_TYPE(META_NS::ICurve1D::WeakPtr)
47 META_TYPE(META_NS::ICurve1D::Ptr)
48 
49 #endif
50