1 /*
2  * Copyright (C) 2024 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package androidx.ink.geometry.internal
18 
19 import androidx.ink.geometry.ImmutableVec
20 import androidx.ink.geometry.MutableVec
21 import androidx.ink.nativeloader.NativeLoader
22 import androidx.ink.nativeloader.UsedByNative
23 
24 /** Helper functions for Vec. */
25 @UsedByNative
26 internal object VecNative {
27 
28     init {
29         NativeLoader.load()
30     }
31 
32     @UsedByNative
unitVecnull33     external fun unitVec(
34         vecX: Float,
35         vecY: Float,
36         immutableVecClass: Class<ImmutableVec>,
37     ): ImmutableVec
38 
39     @UsedByNative external fun populateUnitVec(vecX: Float, vecY: Float, output: MutableVec)
40 
41     @UsedByNative
42     external fun absoluteAngleBetween(
43         firstVecX: Float,
44         firstVecY: Float,
45         secondVecX: Float,
46         secondVecY: Float,
47     ): Float
48 
49     @UsedByNative
50     external fun signedAngleBetween(
51         firstVecX: Float,
52         firstVecY: Float,
53         secondVecX: Float,
54         secondVecY: Float,
55     ): Float
56 }
57