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61 lines
1.7 KiB
COBOL
61 lines
1.7 KiB
COBOL
#pypp 0
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// Iris: micro-kernel for a capability-based operating system.
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// source/bsquare.ccp: Floating square demo.
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// Copyright 2009 Bas Wijnen <wijnen@debian.org>
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include <iris.hh>
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#include <devices.hh>
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static unsigned *framebuffer
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static int const r = 10
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static int colour
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void square (int x, int y, bool print):
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for int ty = y - r; ty < y + r; ++ty:
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if ty < 0 || ty >= 240:
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continue
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for int tx = x - r; tx < x + r; ++tx:
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if tx < 0 || tx >= 320:
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continue
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framebuffer[ty * 320 + tx] = (print ? colour : 0)
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Iris::Num start ():
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Iris::my_parent.init_done ()
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colour = 0xffff00
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framebuffer = (unsigned *)0x15000
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Iris::Display display = Iris::my_parent.get_capability <Iris::Display> (0x10001)
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int x = r, y = r, dx = 3, dy = 3
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Iris::Cap eof = Iris::my_receiver.create_capability (0)
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while true:
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display.set_eof_cb (eof)
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Iris::wait ()
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square (x, y, false)
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x += dx
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y += dy
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if y + r >= 240:
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dy = -dy
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y = 240 - r
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if x - r < 0:
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x = r
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dx = -dx
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if x + r >= 320:
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x = 320 - r
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dx = -dx
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if y - r < 0:
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y = r
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dy = -dy
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square (x, y, true)
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