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Generate colors between red and green for a power meter?
...scale the red and green values. Assuming your max red/green/blue value is 255, and n is in range 0 .. 100
R = (255 * n) / 100
G = (255 * (100 - n)) / 100
B = 0
(Amended for integer maths, tip of the hat to Ferrucio)
Another way to do would be to use a HSV colour model, and cycle the hue from 0 ...
How to explain callbacks in plain english? How are they different from calling one function from ano
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115
+50
Often an ...
Python Image Library fails with message “decoder JPEG not available” - PIL
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15 Answers
15
Active
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Usage of forceLayout(), requestLayout() and invalidate()
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359
To better understand answers provided by François BOURLIEUX and Dalvik I suggest you take a lo...
Java Constructor Inheritance
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answered Oct 29 '09 at 15:09
Jon SkeetJon Skeet
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How to draw a circle with text in the middle?
...center the text vertically. In this example the height and line-height are 500px.
Example
JSFiddle
.circle {
width: 500px;
height: 500px;
line-height: 500px;
border-radius: 50%;
font-size: 50px;
color: #fff;
text-align: center;
background: #000
}
<div class="circle">Hello ...
How to store int[] array in application Settings
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5
Awesome. To enter something into setting using the editor in Visual Studio, you should paste something like this, this is for a string array...
Binding a Button's visibility to a bool value in ViewModel
...oVis" />
<!-- In your Button declaration -->
<Button
Height="50" Width="50"
Style="{StaticResource MyButtonStyle}"
Command="{Binding SmallDisp}" CommandParameter="{Binding}"
Cursor="Hand" Visibility="{Binding Path=AdvancedFormat, Converter={StaticResource BoolToVis}}"/>
Note th...
How do you share constants in NodeJS modules?
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You can explicitly export it to the global scope with global.FOO = 5. Then you simply need to require the file, and not even save your return value.
But really, you shouldn't do that. Keeping things properly encapsulated is a good thing. You have the right idea already, so keep doing what ...
How to enable CORS in AngularJs
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195
You don't. The server you are making the request to has to implement CORS to grant JavaScript fr...