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133 lines
3.7 KiB
133 lines
3.7 KiB
/*==LICENSE==* |
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CyanWorlds.com Engine - MMOG client, server and tools |
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Copyright (C) 2011 Cyan Worlds, Inc. |
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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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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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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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Additional permissions under GNU GPL version 3 section 7 |
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If you modify this Program, or any covered work, by linking or |
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combining it with any of RAD Game Tools Bink SDK, Autodesk 3ds Max SDK, |
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NVIDIA PhysX SDK, Microsoft DirectX SDK, OpenSSL library, Independent |
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JPEG Group JPEG library, Microsoft Windows Media SDK, or Apple QuickTime SDK |
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(or a modified version of those libraries), |
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containing parts covered by the terms of the Bink SDK EULA, 3ds Max EULA, |
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PhysX SDK EULA, DirectX SDK EULA, OpenSSL and SSLeay licenses, IJG |
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JPEG Library README, Windows Media SDK EULA, or QuickTime SDK EULA, the |
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licensors of this Program grant you additional |
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permission to convey the resulting work. Corresponding Source for a |
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non-source form of such a combination shall include the source code for |
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the parts of OpenSSL and IJG JPEG Library used as well as that of the covered |
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work. |
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You can contact Cyan Worlds, Inc. by email legal@cyan.com |
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or by snail mail at: |
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Cyan Worlds, Inc. |
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14617 N Newport Hwy |
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Mead, WA 99021 |
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*==LICENSE==*/ |
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#include "hsGeometry3.h" |
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#include "hsStream.h" |
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hsVector3 operator%(const hsVector3& t, const hsVector3& s) |
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{ |
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hsVector3 result; |
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return *result.Set( hsScalarMul(t.fY, s.fZ) - hsScalarMul(s.fY, t.fZ), |
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-hsScalarMul(t.fX, s.fZ) + hsScalarMul(s.fX, t.fZ), |
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hsScalarMul(t.fX, s.fY) - hsScalarMul(s.fX, t.fY)); |
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} |
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////////////////////////////////// |
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///////////////////////////////// |
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#if HS_SCALAR_IS_FIXED |
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hsScalar hsScalarTriple::Magnitude() const |
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{ |
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hsWide result, temp; |
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result.Mul(fCoord[0], fCoord[0]); |
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temp.Mul(fCoord[1], fCoord[1]); |
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result.Add(&temp); |
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temp.Mul(fCoord[2], fCoord[2]); |
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result.Add(&temp); |
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return result.Sqrt(); |
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} |
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hsScalar hsScalarTriple::MagnitudeSquared() const |
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{ |
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hsWide result, temp; |
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result.Mul(fCoord[0], fCoord[0]); |
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temp.Mul(fCoord[1], fCoord[1]); |
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result.Add(&temp); |
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temp.Mul(fCoord[2], fCoord[2]); |
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result.Add(&temp); |
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return result.AsFixed(); |
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} |
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#endif |
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void hsScalarTriple::Read(hsStream *stream) |
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{ |
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// DANGER for speed read directly into these variables...ASSUMES fX,fY, and fZ are in contiguous order (PBG) |
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stream->Read12Bytes(&fX); |
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#if HS_BUILD_FOR_MAC |
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fX = hsSwapEndianFloat(fX); |
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fY = hsSwapEndianFloat(fY); |
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fZ = hsSwapEndianFloat(fZ); |
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#endif |
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} |
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void hsScalarTriple::Write(hsStream *stream) const |
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{ |
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stream->WriteSwapScalar(fX); |
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stream->WriteSwapScalar(fY); |
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stream->WriteSwapScalar(fZ); |
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} |
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hsPlane3::hsPlane3(const hsPoint3* pt1, const hsPoint3* pt2, const hsPoint3* pt3) |
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{ |
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// convert into a point with two vectors |
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hsVector3 v1(pt2, pt1); |
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hsVector3 v2(pt3, pt1); |
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// calculate the normal (wedge) |
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fN.fX = (v1.fY * v2.fZ) - (v2.fY * v1.fZ); |
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fN.fY = (v1.fZ * v2.fX) - (v2.fZ * v1.fX); |
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fN.fZ = (v1.fX * v2.fY) - (v2.fX * v1.fY); |
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fN.Normalize(); |
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fD = -pt1->InnerProduct(&fN); |
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} |
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void hsPlane3::Read(hsStream *stream) |
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{ |
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fN.Read(stream); |
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fD=stream->ReadSwapScalar(); |
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} |
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void hsPlane3::Write(hsStream *stream) const |
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{ |
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fN.Write(stream); |
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stream->WriteSwapScalar(fD); |
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}
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