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|
{
Ported to FPC by Nikolay Nikolov (nickysn@users.sourceforge.net)
}
{
Palette example for OpenPTC 1.0 C++ implementation
Copyright (c) Glenn Fiedler (ptc@gaffer.org)
This source code is in the public domain
}
program PaletteExample;
{$MODE objfpc}
uses
ptc;
var
console: IPTCConsole;
surface: IPTCSurface;
format: IPTCFormat;
palette: IPTCPalette;
data: array [0..255] of Uint32;
pixels: PUint8;
width, height: Integer;
i: Integer;
x, y, index: Integer;
begin
try
try
{ create console }
console := TPTCConsoleFactory.CreateNew;
{ create format }
format := TPTCFormatFactory.CreateNew(8);
{ open console }
console.open('Palette example', format);
{ create surface }
surface := TPTCSurfaceFactory.CreateNew(console.width, console.height, format);
{ create palette }
palette := TPTCPaletteFactory.CreateNew;
{ generate palette }
for i := 0 to 255 do
data[i] := i;
{ load palette data }
palette.Load(data);
{ set console palette }
console.Palette(palette);
{ set surface palette }
surface.Palette(palette);
{ loop until a key is pressed }
while not console.KeyPressed do
begin
{ lock surface }
pixels := surface.lock;
try
{ get surface dimensions }
width := surface.width;
height := surface.height;
{ draw random pixels }
for i := 1 to 100 do
begin
{ get random position }
x := Random(width);
y := Random(height);
{ get random color index }
index := Random(256);
{ draw color [index] at position [x,y] }
pixels[x + y * width] := index;
end;
finally
{ unlock surface }
surface.unlock;
end;
{ copy to console }
surface.copy(console);
{ update console }
console.update;
end;
finally
if Assigned(console) then
console.close;
end;
except
on error: TPTCError do
{ report error }
error.report;
end;
end.
|
