diff options
Diffstat (limited to 'indra/llmath/llrect.h')
| -rw-r--r-- | indra/llmath/llrect.h | 97 |
1 files changed, 53 insertions, 44 deletions
diff --git a/indra/llmath/llrect.h b/indra/llmath/llrect.h index 1fa5a741d5..c51e0e0ae6 100644 --- a/indra/llmath/llrect.h +++ b/indra/llmath/llrect.h @@ -2,30 +2,25 @@ * @file llrect.h * @brief A rectangle in GL coordinates, with bottom,left = 0,0 * - * $LicenseInfo:firstyear=2001&license=viewergpl$ - * - * Copyright (c) 2001-2007, Linden Research, Inc. - * + * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * Second Life Viewer Source Code - * The source code in this file ("Source Code") is provided by Linden Lab - * to you under the terms of the GNU General Public License, version 2.0 - * ("GPL"), unless you have obtained a separate licensing agreement - * ("Other License"), formally executed by you and Linden Lab. Terms of - * the GPL can be found in doc/GPL-license.txt in this distribution, or - * online at http://secondlife.com/developers/opensource/gplv2 + * Copyright (C) 2010, Linden Research, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; + * version 2.1 of the License only. * - * There are special exceptions to the terms and conditions of the GPL as - * it is applied to this Source Code. View the full text of the exception - * in the file doc/FLOSS-exception.txt in this software distribution, or - * online at http://secondlife.com/developers/opensource/flossexception + * This library 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 + * Lesser General Public License for more details. * - * By copying, modifying or distributing this software, you acknowledge - * that you have read and understood your obligations described above, - * and agree to abide by those obligations. + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * - * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO - * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, - * COMPLETENESS OR PERFORMANCE. + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ @@ -41,6 +36,7 @@ template <class Type> class LLRectBase { public: + typedef Type tCoordType; Type mLeft; Type mTop; Type mRight; @@ -63,23 +59,17 @@ public: mLeft(left), mTop(top), mRight(right), mBottom(bottom) {} - LLRectBase(const LLSD& sd) + explicit LLRectBase(const LLSD& sd) { setValue(sd); } - const LLRectBase& operator=(const LLSD& sd) - { - setValue(sd); - return *this; - } - void setValue(const LLSD& sd) { - mLeft = sd[0].asInteger(); - mTop = sd[1].asInteger(); - mRight = sd[2].asInteger(); - mBottom = sd[3].asInteger(); + mLeft = (Type)sd[0].asInteger(); + mTop = (Type)sd[1].asInteger(); + mRight = (Type)sd[2].asInteger(); + mBottom = (Type)sd[3].asInteger(); } LLSD getValue() const @@ -146,10 +136,20 @@ public: // Note: Does NOT follow GL_QUAD conventions: the top and right edges ARE considered part of the rect // returns TRUE if any part of rect is is inside this LLRect - BOOL rectInRect(const LLRectBase* rect) const + BOOL overlaps(const LLRectBase& rect) const + { + return !(mLeft > rect.mRight + || mRight < rect.mLeft + || mBottom > rect.mTop + || mTop < rect.mBottom); + } + + BOOL contains(const LLRectBase& rect) const { - return mLeft <= rect->mRight && rect->mLeft <= mRight && - mBottom <= rect->mTop && rect->mBottom <= mTop ; + return mLeft <= rect.mLeft + && mRight >= rect.mRight + && mBottom <= rect.mBottom + && mTop >= rect.mTop; } LLRectBase& set(Type left, Type top, Type right, Type bottom) @@ -183,10 +183,11 @@ public: LLRectBase& setCenterAndSize(Type x, Type y, Type width, Type height) { + // width and height could be odd, so favor top, right with extra pixel mLeft = x - width/2; - mTop = y + height/2; - mRight = x + width/2; mBottom = y - height/2; + mTop = mBottom + height; + mRight = mLeft + width; return *this; } @@ -222,21 +223,30 @@ public: return *this; } - bool isNull() const + bool isValid() const + { + return mLeft <= mRight && mBottom <= mTop; + } + + bool isEmpty() const { return mLeft == mRight || mBottom == mTop; } - LLRectBase& unionWith(const LLRectBase &other) + bool notEmpty() const + { + return !isEmpty(); + } + + void unionWith(const LLRectBase &other) { mLeft = llmin(mLeft, other.mLeft); mRight = llmax(mRight, other.mRight); mBottom = llmin(mBottom, other.mBottom); mTop = llmax(mTop, other.mTop); - return *this; } - LLRectBase& intersectWith(const LLRectBase &other) + void intersectWith(const LLRectBase &other) { mLeft = llmax(mLeft, other.mLeft); mRight = llmin(mRight, other.mRight); @@ -250,7 +260,6 @@ public: { mBottom = mTop; } - return *this; } friend std::ostream &operator<<(std::ostream &s, const LLRectBase &rect) @@ -259,8 +268,8 @@ public: << " W " << rect.getWidth() << " H " << rect.getHeight() << " }"; return s; } - - bool operator==(const LLRectBase &b) + + bool operator==(const LLRectBase &b) const { return ((mLeft == b.mLeft) && (mTop == b.mTop) && @@ -268,7 +277,7 @@ public: (mBottom == b.mBottom)); } - bool operator!=(const LLRectBase &b) + bool operator!=(const LLRectBase &b) const { return ((mLeft != b.mLeft) || (mTop != b.mTop) || |