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Re: Virtual Earth - Encoding for performance - new article

Hello,

I tried to translate the code from c# to VB.NET and I got some errors.

///

/// Encode an unsigned number in the encode format.
///

/// the unsigned number
/// the encoded string
private static string encodeNumber(int num)
{
StringBuilder encodeString = new StringBuilder();
while (num >= 0x20)
{
//while another chunk follows
encodeString.Append((char)((0x20 | (num & 0x1f)) + minASCII));
//OR value with 0x20, convert to decimal and add 63
num >>= binaryChunkSize; //shift to next chunk
}
encodeString.Append((char)(num + minASCII));
return encodeString.ToString();
}
Is there someone who can translate this function to VB.NET, I don't know what type of variables are "binaryChunkSize" and "minASCII".

Thanks a lot for help
Dirk

Re: Virtual Earth - Encoding for performance - new article

Hi -

Great article. I am going to pull your code into a sample site I am building.

Thanks,
Matt Berseth - http://mattberseth.com

Re: Virtual Earth - Encoding for performance - new article

What are the value for "binaryChunkSize" and "minASCII"?

Re: Virtual Earth - Encoding for performance - new article

binaryChunkSize = 5
minASCII = 63

Re: Virtual Earth - Encoding for performance - new article

Hi, Thanks for the steer. Am i allowed to use these code snippets in a production system i am building for a client?

Cheers

Re: Virtual Earth - Encoding for performance - new article

Have you noticed the JS decoding algorithm to be slow in browsers other than FF? I have found out that charCodeAt on a long-ish string to be about 300x slower in Safari and 1000x slower in Opera 9.2

Re: Virtual Earth - Encoding for performance - new article

EncodeLatLong(List points)
the List gives an error... (type or namespace not found)

Re: Virtual Earth - Encoding for performance - new article

My previous Comment is not shown correctly:

EncodeLatLong(List points)