diff options
Diffstat (limited to 'indra/llmath/llplane.h')
| -rwxr-xr-x[-rw-r--r--] | indra/llmath/llplane.h | 90 |
1 files changed, 63 insertions, 27 deletions
diff --git a/indra/llmath/llplane.h b/indra/llmath/llplane.h index 89c6a1460f..64a3eed0e5 100644..100755 --- a/indra/llmath/llplane.h +++ b/indra/llmath/llplane.h @@ -1,31 +1,25 @@ /** * @file llplane.h * - * $LicenseInfo:firstyear=2001&license=viewergpl$ - * - * Copyright (c) 2001-2009, 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://secondlifegrid.net/programs/open_source/licensing/gplv2 + * Copyright (C) 2010, Linden Research, Inc. * - * 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://secondlifegrid.net/programs/open_source/licensing/flossexception + * 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. * - * 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. + * 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. * - * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO - * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, - * COMPLETENESS OR PERFORMANCE. + * 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 + * + * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ @@ -42,19 +36,25 @@ // The plane normal = [A, B, C] // The closest approach = D / sqrt(A*A + B*B + C*C) -class LLPlane : public LLVector4 + +LL_ALIGN_PREFIX(16) +class LLPlane { public: + + // Constructors LLPlane() {}; // no default constructor LLPlane(const LLVector3 &p0, F32 d) { setVec(p0, d); } LLPlane(const LLVector3 &p0, const LLVector3 &n) { setVec(p0, n); } - void setVec(const LLVector3 &p0, F32 d) { LLVector4::setVec(p0[0], p0[1], p0[2], d); } - void setVec(const LLVector3 &p0, const LLVector3 &n) + inline void setVec(const LLVector3 &p0, F32 d) { mV.set(p0[0], p0[1], p0[2], d); } + + // Set + inline void setVec(const LLVector3 &p0, const LLVector3 &n) { F32 d = -(p0 * n); setVec(n, d); } - void setVec(const LLVector3 &p0, const LLVector3 &p1, const LLVector3 &p2) + inline void setVec(const LLVector3 &p0, const LLVector3 &p1, const LLVector3 &p2) { LLVector3 u, v, w; u = p1 - p0; @@ -64,9 +64,45 @@ public: F32 d = -(w * p0); setVec(w, d); } - LLPlane& operator=(const LLVector4& v2) { LLVector4::setVec(v2[0],v2[1],v2[2],v2[3]); return *this;} + + inline LLPlane& operator=(const LLVector4& v2) { mV.set(v2[0],v2[1],v2[2],v2[3]); return *this;} + + inline LLPlane& operator=(const LLVector4a& v2) { mV.set(v2[0],v2[1],v2[2],v2[3]); return *this;} + + inline void set(const LLPlane& p2) { mV = p2.mV; } + + // F32 dist(const LLVector3 &v2) const { return mV[0]*v2[0] + mV[1]*v2[1] + mV[2]*v2[2] + mV[3]; } -}; + + inline LLSimdScalar dot3(const LLVector4a& b) const { return mV.dot3(b); } + + // Read-only access a single float in this vector. Do not use in proximity to any function call that manipulates + // the data at the whole vector level or you will incur a substantial penalty. Consider using the splat functions instead + inline F32 operator[](const S32 idx) const { return mV[idx]; } + + // preferable when index is known at compile time + template <int N> LL_FORCE_INLINE void getAt(LLSimdScalar& v) const { v = mV.getScalarAt<N>(); } + + // reset the vector to 0, 0, 0, 1 + inline void clear() { mV.set(0, 0, 0, 1); } + + inline void getVector3(LLVector3& vec) const { vec.set(mV[0], mV[1], mV[2]); } + + // Retrieve the mask indicating which of the x, y, or z axis are greater or equal to zero. + inline U8 calcPlaneMask() + { + return mV.greaterEqual(LLVector4a::getZero()).getGatheredBits() & LLVector4Logical::MASK_XYZ; + } + + //check if two planes are nearly same + bool equal(const LLPlane& p) const + { + return mV.equals4(p.mV); + } + +private: + LLVector4a mV; +} LL_ALIGN_POSTFIX(16); |