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{
Ported to FPC by Nikolay Nikolov (nickysn@users.sourceforge.net)
}
{
Pixel example for OpenPTC 1.0 C++ API
Copyright (c) Glenn Fiedler (ptc@gaffer.org)
This source code is licensed under the GNU GPL
}
program PixelExample;
{$MODE objfpc}
uses
ptc;
procedure putpixel(surface: IPTCSurface; x, y: Integer; r, g, b: Uint8);
var
pixels: PUint32;
color: Uint32;
begin
{ lock surface }
pixels := surface.lock;
try
{ pack the color integer from r,g,b components }
color := (r shl 16) or (g shl 8) or b;
{ plot the pixel on the surface }
pixels[x + y * surface.width] := color;
finally
{ unlock surface }
surface.unlock;
end;
end;
var
console: IPTCConsole;
surface: IPTCSurface;
format: IPTCFormat;
begin
try
try
{ create console }
console := TPTCConsoleFactory.CreateNew;
{ create format }
format := TPTCFormatFactory.CreateNew(32, $00FF0000, $0000FF00, $000000FF);
{ open the console }
console.open('Pixel example', format);
{ create surface matching console dimensions }
surface := TPTCSurfaceFactory.CreateNew(console.width, console.height, format);
{ plot a white pixel in the middle of the surface }
putpixel(surface, surface.width div 2, surface.height div 2, 255, 255, 255);
{ copy to console }
surface.copy(console);
{ update console }
console.update;
{ read key }
console.ReadKey;
finally
if Assigned(console) then
console.close;
end;
except
on error: TPTCError do
{ report error }
error.report;
end;
end.
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