| 1 | #Region "Microsoft.VisualBasic::69ceea95906ed80e045120aa58ab0bf6, Microsoft.VisualBasic.Core\Extensions\Image\Math\Models\Vector2D.vb" |
| 2 | |
| 3 | ' Author: |
| 4 | ' |
| 5 | ' asuka (amethyst.asuka@gcmodeller.org) |
| 6 | ' xie (genetics@smrucc.org) |
| 7 | ' xieguigang (xie.guigang@live.com) |
| 8 | ' |
| 9 | ' Copyright (c) 2018 GPL3 Licensed |
| 10 | ' |
| 11 | ' |
| 12 | ' GNU GENERAL PUBLIC LICENSE (GPL3) |
| 13 | ' |
| 14 | ' |
| 15 | ' This program is free software: you can redistribute it and/or modify |
| 16 | ' it under the terms of the GNU General Public License as published by |
| 17 | ' the Free Software Foundation, either version 3 of the License, or |
| 18 | ' (at your option) any later version. |
| 19 | ' |
| 20 | ' This program is distributed in the hope that it will be useful, |
| 21 | ' but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | ' MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | ' GNU General Public License for more details. |
| 24 | ' |
| 25 | ' You should have received a copy of the GNU General Public License |
| 26 | ' along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 27 | |
| 28 | |
| 29 | |
| 30 | ' /********************************************************************************/ |
| 31 | |
| 32 | ' Summaries: |
| 33 | |
| 34 | ' Class Vector2D |
| 35 | ' |
| 36 | ' Properties: Length |
| 37 | ' |
| 38 | ' Constructor: (+3 Overloads) Sub New |
| 39 | ' Operators: -, (+2 Overloads) * |
| 40 | ' |
| 41 | ' |
| 42 | ' /********************************************************************************/ |
| 43 | |
| 44 | #End Region |
| 45 | |
| 46 | Namespace Imaging.Math2D |
| 47 | |
| 48 | ''' <summary> |
| 49 | ''' <see cref="Drawing.PointF"/> |
| 50 | ''' </summary> |
| 51 | Public Class Vector2D |
| 52 | |
| 53 | Public x As Double |
| 54 | Public y As Double |
| 55 | |
| 56 | Public ReadOnly Property Length As Double |
| 57 | Get |
| 58 | Return Math.Sqrt(x ^ 2 + y ^ 2) |
| 59 | End Get |
| 60 | End Property |
| 61 | |
| 62 | Public Sub New() |
| 63 | Me.New(0.0, 0.0) |
| 64 | End Sub |
| 65 | |
| 66 | Public Sub New(x As Double, y As Double) |
| 67 | Me.x = x |
| 68 | Me.y = y |
| 69 | End Sub |
| 70 | |
| 71 | Public Sub New(x As Integer, y As Integer) |
| 72 | Me.x = x |
| 73 | Me.y = y |
| 74 | End Sub |
| 75 | |
| 76 | ''' <summary> |
| 77 | ''' reverse |
| 78 | ''' </summary> |
| 79 | ''' <param name="v"></param> |
| 80 | ''' <returns></returns> |
| 81 | Public Shared Operator -(v As Vector2D) As Vector2D |
| 82 | With v |
| 83 | Return New Vector2D(- .x, - .y) |
| 84 | End With |
| 85 | End Operator |
| 86 | |
| 87 | ''' <summary> |
| 88 | ''' multiple |
| 89 | ''' </summary> |
| 90 | ''' <param name="scale#"></param> |
| 91 | ''' <param name="v"></param> |
| 92 | ''' <returns></returns> |
| 93 | Public Shared Operator *(scale#, v As Vector2D) As Vector2D |
| 94 | With v |
| 95 | Return New Vector2D(scale * .x, scale * .y) |
| 96 | End With |
| 97 | End Operator |
| 98 | |
| 99 | ''' <summary> |
| 100 | ''' multiple |
| 101 | ''' </summary> |
| 102 | ''' <param name="v"></param> |
| 103 | ''' <param name="scale#"></param> |
| 104 | ''' <returns></returns> |
| 105 | Public Shared Operator *(v As Vector2D, scale#) As Vector2D |
| 106 | With v |
| 107 | Return New Vector2D(scale * .x, scale * .y) |
| 108 | End With |
| 109 | End Operator |
| 110 | End Class |
| 111 | End Namespace |