快速搜索颜色? [英] Searching fast through colors ?
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问题描述
我想找到一种更快捷的搜索大量颜色并获取相关ID值的方法。通常,代码列在下面,它工作正常,但不幸的是很慢。我想我需要先以某种方式对列表进行排序然后搜索它(.NET二进制搜索?)
有人有什么建议吗?
非常感谢您的帮助!
公共 类 MyColor
公共 属性 ID As 整数
公开 属性 RGB As 颜色
结束 类
' 添加了大量颜色到列表:
Dim allMyColors 作为列表( of MyColor)= 新列表( MyColor)
' 然后使用已知的R,G和B值我搜索它是否存在并获得相关的ID值
Dim mc As MyColor = allMyColors.FirstOrDefault( Function ( colorage.colorage.RGB.R = R 和 colorage.RGB.G = G 和 colorage.RGB。 B = B)
如果 mc IsNot 没什么 然后
返回 mc.ID
< span class =code-keyword> Else
返回 0
结束 如果
尝试使用键入Color
的词典
,其值为MyColor
类或仅ID
值。
< pre lang =vb.net> Dim allMyColors As Dictionary( Of 颜色,整数)= 新字典( Of 颜色,整数)()
...
Dim id As 整数
Dim key As Color = Color.FromArgb(R,G,B)
If allMyColors.TryGetValue(key,id)然后
返回 id
Else
返回 0
结束 如果
Hi,
I am trying to find a quicker way to search through a large number of colors and get their associated ID values. Generally the code is listed below and it works fine but is unfortunately quite slow. I guess I need to sort the list somehow first and then search it (.NET binarysearch?)
Does anyone have any suggestions please?
Many thanks for any assistance!
Public Class MyColor
Public Property ID As Integer
Public Property RGB As Color
End Class
' Large amount of colors added to a list:
Dim allMyColors As List(Of MyColor) = New List(Of MyColor)
' Then with a known R,G and B value I search to see if it exists and get the associated ID value
Dim mc As MyColor = allMyColors.FirstOrDefault(Function(colorage) colorage.RGB.R = R And colorage.RGB.G = G And colorage.RGB.B = B)
If mc IsNot Nothing Then
Return mc.ID
Else
Return 0
End If
解决方案
Try using aDictionary
keyed on theColor
, where the value is either theMyColor
class or just theID
value.
Dim allMyColors As Dictionary(Of Color, Integer) = New Dictionary(Of Color, Integer)() ... Dim id As Integer Dim key As Color = Color.FromArgb(R, G, B) If allMyColors.TryGetValue(key, id) Then Return id Else Return 0 End If
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