/* * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, * 2018, 2019 * Jonathan Schleifer * * All rights reserved. * * This file is part of ObjFW. It may be distributed under the terms of the * Q Public License 1.0, which can be found in the file LICENSE.QPL included in * the packaging of this file. * * Alternatively, it may be distributed under the terms of the GNU General * Public License, either version 2 or 3, which can be found in the file * LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this * file. */ #include "config.h" #import "OFColor.h" #import "OFInvalidArgumentException.h" @implementation OFColor + (instancetype)colorWithRed: (float)red green: (float)green blue: (float)blue alpha: (float)alpha { return [[[self alloc] initWithRed: red green: green blue: blue alpha: alpha] autorelease]; } - (instancetype)initWithRed: (float)red green: (float)green blue: (float)blue alpha: (float)alpha { self = [super init]; @try { if (red < 0.0 || red > 1.0 || green < 0.0 || green > 1.0 || blue < 0.0 || blue > 1.0 || alpha < 0.0 || alpha > 1.0) @throw [OFInvalidArgumentException exception]; _red = red; _green = green; _blue = blue; _alpha = alpha; } @catch (id e) { [self release]; @throw e; } return self; } - (bool)isEqual: (id)object { OFColor *other; if (object == self) return true; if (![object isKindOfClass: [OFColor class]]) return false; other = object; if (other->_red != _red) return false; if (other->_green != _green) return false; if (other->_blue != _blue) return false; if (other->_alpha != _alpha) return false; return true; } - (uint32_t)hash { uint32_t hash; union { float f; unsigned char b[sizeof(float)]; } f; OF_HASH_INIT(hash); f.f = OF_BSWAP_FLOAT_IF_LE(_red); for (uint_fast8_t i = 0; i < sizeof(float); i++) OF_HASH_ADD(hash, f.b[i]); f.f = OF_BSWAP_FLOAT_IF_LE(_green); for (uint_fast8_t i = 0; i < sizeof(float); i++) OF_HASH_ADD(hash, f.b[i]); f.f = OF_BSWAP_FLOAT_IF_LE(_blue); for (uint_fast8_t i = 0; i < sizeof(float); i++) OF_HASH_ADD(hash, f.b[i]); f.f = OF_BSWAP_FLOAT_IF_LE(_alpha); for (uint_fast8_t i = 0; i < sizeof(float); i++) OF_HASH_ADD(hash, f.b[i]); OF_HASH_FINALIZE(hash); return hash; } - (void)getRed: (float *)red green: (float *)green blue: (float *)blue alpha: (float *)alpha { *red = _red; *green = _green; *blue = _blue; if (alpha != NULL) *alpha = _alpha; } @end