CentrED/UOLib/UGraphicHelper.pas

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(*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at
* http://www.opensource.org/licenses/cddl1.php.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at
* http://www.opensource.org/licenses/cddl1.php. If applicable,
* add the following below this CDDL HEADER, with the fields enclosed
* by brackets "[]" replaced with your own identifying * information:
* Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
*
* Portions Copyright 2007 Andreas Schneider
*)
unit UGraphicHelper;
{$mode objfpc}{$H+}
interface
function ARGB2RGB(Value: Word): Integer;
function RGB2ARGB(Value: Integer): Word;
//New functions for Vampyre Imaging Lib
function DecodeUOColor(Value: Word): Integer;
function EncodeUOColor(Value: Integer): Word;
implementation
function ARGB2RGB(Value: Word): Integer;
var
R, G, B: Byte;
begin
R := ((Value shr 10) and $1F) * 8;
G := ((Value shr 5) and $1F) * 8;
B := (Value and $1F) * 8;
Result := R + G shl 8 + B shl 16;
end;
function RGB2ARGB(Value: Integer): Word;
var
R, G, B: Byte;
begin
R := (Value and $FF) div 8;
G := ((Value shr 8) and $FF) div 8;
B := ((Value shr 16) and $FF) div 8;
Result := (R shl 10) + (G shl 5) + B;
end;
function DecodeUOColor(Value: Word): Integer;
var
R, G, B: Byte;
begin
R := ((Value shr 10) and $1F) * 8;
G := ((Value shr 5) and $1F) * 8;
B := (Value and $1F) * 8;
Result := B + G shl 8 + R shl 16;
end;
function EncodeUOColor(Value: Integer): Word;
var
R, G, B: Byte;
begin
B := (Value and $FF) div 8;
G := ((Value shr 8) and $FF) div 8;
R := ((Value shr 16) and $FF) div 8;
Result := (R shl 10) + (G shl 5) + B;
end;
end.