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{
Ported to FPC by Nikolay Nikolov (nickysn@users.sourceforge.net)
}
{
Buffer example for OpenPTC 1.0 C++ implementation
Copyright (c) Glenn Fiedler (ptc@gaffer.org)
This source code is in the public domain
}
program BufferExample;
{$MODE objfpc}
uses
ptc;
var
console: IPTCConsole;
format: IPTCFormat;
width, height: Integer;
pixels: PUint32 = nil;
x, y, r, g, b: Integer;
i: Integer;
begin
try
try
{ create console }
console := TPTCConsoleFactory.CreateNew;
{ create format }
format := TPTCFormatFactory.CreateNew(32, $00FF0000, $0000FF00, $000000FF);
{ open the console }
console.Open('Buffer example', format);
{ get console dimensions }
width := console.Width;
height := console.Height;
{ allocate a buffer of pixels }
pixels := GetMem(width * height * SizeOf(Uint32));
FillChar(pixels^, width * height * SizeOf(Uint32), 0);
{ loop until a key is pressed }
while not console.KeyPressed do
begin
{ draw random pixels }
for i := 1 to 100 do
begin
{ get random position }
x := Random(width);
y := Random(height);
{ get random color }
r := Random(256);
g := Random(256);
b := Random(256);
{ draw color [r,g,b] at position [x,y] }
pixels[x + y * width] := (r shl 16) or (g shl 8) or b;
end;
{ load pixels to console }
console.Load(pixels, width, height, width * 4, format, TPTCPaletteFactory.CreateNew);
{ update console }
console.Update;
end;
finally
{ free pixels buffer }
FreeMem(pixels);
if Assigned(console) then
console.close;
end;
except
on error: TPTCError do
{ report error }
error.report;
end;
end.
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