Short to 16bit 555 format

Coder87C · 02-04-2006, 05:03 AM

Hi,

I have a file which I read in shorts. Each short represents a color.

I need to make the short into a RGB color using 555 format.

F = Alpha
Red = E to A
Green = 9 to 5
Blue = 4 to 0.

So I made the function

Code:

public Color getColor(short value)
    {
        short R = (value & 0xF800) >> 10;
        short G = (value & 0x07C0) >> 5;
        short B = (value & 0x003E);
        return Color.FromArgb(R, G, B);
    }

The error I get is:

Error 1 Cannot implicitly convert type 'int' to 'short'. An explicit conversion exists (are you missing a cast?)

On each of the conversions. I looked this up in a couple places and it said almost the same thing, can anyone help me?

Thankyou.

quzah · 02-04-2006, 05:33 AM

My guess is it wants you to cast your hex values to a short, but I don't C#.

Quzah.

Coder87C · 02-04-2006, 05:43 AM

What I did was changed it to:

int R = (value & 0xF800) >> 10;

so int R not short R.

Can this screw things up?

quzah · 02-04-2006, 06:54 PM

That depends if you really need a short or an int. In C you'd just do something like this, that is, if you really needed to:

Code:

short int R = (value & (short int)0xABC) >> 10;

I've never looked at C# so I don't know how they do casts.

Quzah.

02-04-2006, 05:03 AM	#1
Coder87C Registered User Join Date: Jul 2003 Posts: 110	Short to 16bit 555 format Hi, I have a file which I read in shorts. Each short represents a color. I need to make the short into a RGB color using 555 format. F = Alpha Red = E to A Green = 9 to 5 Blue = 4 to 0. So I made the function Code: public Color getColor(short value) { short R = (value & 0xF800) >> 10; short G = (value & 0x07C0) >> 5; short B = (value & 0x003E); return Color.FromArgb(R, G, B); } The error I get is: Error 1 Cannot implicitly convert type 'int' to 'short'. An explicit conversion exists (are you missing a cast?) On each of the conversions. I looked this up in a couple places and it said almost the same thing, can anyone help me? Thankyou.
Coder87C is offline

02-04-2006, 05:33 AM	#2
quzah +++ OK NO CARRIER Join Date: Oct 2001 Posts: 10,640	My guess is it wants you to cast your hex values to a short, but I don't C#. Quzah. __________________ Hundreds of thousands of dipshits can't be wrong. Are you up for the suck?
quzah is offline

02-04-2006, 05:43 AM	#3
Coder87C Registered User Join Date: Jul 2003 Posts: 110	What I did was changed it to: int R = (value & 0xF800) >> 10; so int R not short R. Can this screw things up?
Coder87C is offline

02-04-2006, 06:54 PM	#4
quzah +++ OK NO CARRIER Join Date: Oct 2001 Posts: 10,640	That depends if you really need a short or an int. In C you'd just do something like this, that is, if you really needed to: Code: short int R = (value & (short int)0xABC) >> 10; I've never looked at C# so I don't know how they do casts. Quzah. __________________ Hundreds of thousands of dipshits can't be wrong. Are you up for the suck?
quzah is offline

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