From 1ca40908ed06d640ea4a9570ad8399acc7ce4688 Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Sun, 28 Aug 2011 17:27:57 -0600 Subject: Use a more interesting pattern than "blue" for canvas import/export tests. --- libdimension/tests/test_canvas.c | 56 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 libdimension/tests/test_canvas.c (limited to 'libdimension/tests/test_canvas.c') diff --git a/libdimension/tests/test_canvas.c b/libdimension/tests/test_canvas.c new file mode 100644 index 0000000..b5d02ad --- /dev/null +++ b/libdimension/tests/test_canvas.c @@ -0,0 +1,56 @@ +/************************************************************************* + * Copyright (C) 2011 Tavian Barnes * + * * + * This file is part of The Dimension Test Suite. * + * * + * The Dimension Test Suite is free software; you can redistribute it * + * and/or modify it under the terms of the GNU General Public License as * + * published by the Free Software Foundation; either version 3 of the * + * License, or (at your option) any later version. * + * * + * The Dimension Test Suite is distributed in the hope that it will be * + * useful, but WITHOUT ANY WARRANTY; without even the implied warranty * + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * + * General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program. If not, see . * + *************************************************************************/ + +#include "tests.h" + +void +dmnsn_paint_test_canvas(dmnsn_canvas *canvas) +{ + static const size_t size = 8; + + for (size_t y = 0; y < canvas->height; ++y) { + for (size_t x = 0; x < canvas->width; ++x) { + dmnsn_color a, b; + double n = 3.0*x/canvas->width; + if (x < canvas->width/3) { + a = dmnsn_red; + b = dmnsn_green; + } else if (x < 2*canvas->width/3) { + a = dmnsn_green; + b = dmnsn_blue; + n -= 1.0; + } else { + a = dmnsn_blue; + b = dmnsn_red; + n -= 2.0; + } + + if ((x*y)%(2*size) < size) { + a = dmnsn_color_to_sRGB(a); + b = dmnsn_color_to_sRGB(b); + } + dmnsn_color color = dmnsn_color_gradient(a, b, n); + if ((x*y)%(2*size) < size) { + color = dmnsn_color_from_sRGB(color); + } + + dmnsn_set_pixel(canvas, x, y, color); + } + } +} -- cgit v1.2.3