364 lines
11 KiB
C++
364 lines
11 KiB
C++
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// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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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 Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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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 Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include "std3d.h"
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#include "nel/3d/ps_plane_basis_maker.h"
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#include "nel/3d/ps_register_plane_basis_attribs.h"
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namespace NL3D
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{
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CPlaneBasis CPSPlaneBasisGradient::DefaultPlaneBasisTab[] = { CPlaneBasis(NLMISC::CVector::I), CPlaneBasis(NLMISC::CVector::J) };
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/////////////////////////////////////////////
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// CPSPlaneBasisFollowSpeed implementation //
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/////////////////////////////////////////////
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///============================================================================
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CPlaneBasis CPSPlaneBasisFollowSpeed::get(CPSLocated *loc, uint32 index)
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{
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return (CPlaneBasis(loc->getSpeed()[index]));
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}
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CPlaneBasis CPSPlaneBasisFollowSpeed::get(const CPSEmitterInfo &infos)
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{
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return (CPlaneBasis(infos.Speed));
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}
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///============================================================================
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void *CPSPlaneBasisFollowSpeed::make(CPSLocated *loc,
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uint32 startIndex,
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void *tab, uint32 stride,
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uint32 numAttrib,
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bool enableNoCopy /* = false*/,
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uint32 srcStep /*= (1 << 16)*/,
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bool forceClampEntry /* = false */
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) const
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{
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nlassert(numAttrib);
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if (srcStep == (1 << 16))
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{
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TPSAttribVector::const_iterator speedIt = loc->getSpeed().begin() + startIndex
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, endSpeedIt = loc->getSpeed().begin() + startIndex + numAttrib;
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uint8 *ptDat = (uint8 *) tab;
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switch(_ProjectionPlane)
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{
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case NoProjection:
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do
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{
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*(CPlaneBasis *) ptDat = CPlaneBasis(*speedIt);
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++ speedIt;
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ptDat += stride;
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}
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while (speedIt != endSpeedIt);
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break;
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case XY:
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do
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{
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float norm = sqrtf(speedIt->x * speedIt->x + speedIt->y * speedIt->y);
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float invNorm = (norm != 0.f) ? 1.f / norm : 0.f;
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CPlaneBasis &pb = *(CPlaneBasis *) ptDat;
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pb.X.set(invNorm * speedIt->x, invNorm * speedIt->y, 0.f);
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pb.Y.set(- pb.X.y, pb.X.x, 0.f);
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++ speedIt;
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ptDat += stride;
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}
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while (speedIt != endSpeedIt);
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break;
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case XZ:
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do
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{
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float norm = sqrtf(speedIt->x * speedIt->x + speedIt->z * speedIt->z);
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float invNorm = (norm != 0.f) ? 1.f / norm : 0.f;
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CPlaneBasis &pb = *(CPlaneBasis *) ptDat;
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pb.X.set(invNorm * speedIt->x, 0.f, invNorm * speedIt->z);
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pb.Y.set(- pb.X.z, 0.f, pb.X.x);
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++ speedIt;
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ptDat += stride;
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}
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while (speedIt != endSpeedIt);
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break;
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case YZ:
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do
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{
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float norm = sqrtf(speedIt->y * speedIt->y + speedIt->z * speedIt->z);
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float invNorm = (norm != 0.f) ? 1.f / norm : 0.f;
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CPlaneBasis &pb = *(CPlaneBasis *) ptDat;
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pb.X.set(0.f, invNorm * speedIt->y, invNorm * speedIt->z);
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pb.Y.set(0.f, - pb.X.z, pb.X.y);
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++ speedIt;
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ptDat += stride;
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}
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while (speedIt != endSpeedIt);
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break;
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default:
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nlstop; // unknow projection mode
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break;
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}
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return tab;
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}
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else
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{
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uint32 fpIndex = startIndex * srcStep;
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const TPSAttribVector::const_iterator speedIt = loc->getSpeed().begin();
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uint8 *ptDat = (uint8 *) tab;
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switch(_ProjectionPlane)
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{
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case NoProjection:
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while (numAttrib --)
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{
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*(CPlaneBasis *) ptDat = CPlaneBasis(*(speedIt + (fpIndex >> 16)));
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ptDat += stride;
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fpIndex += srcStep;
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}
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break;
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case XY:
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while (numAttrib --)
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{
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const CVector *speedVect = &(*(speedIt + (fpIndex >> 16)));
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float norm = sqrtf(speedVect->x * speedVect->x + speedVect->y * speedVect->y);
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float invNorm = (norm != 0.f) ? 1.f / norm : 0.f;
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CPlaneBasis &pb = *(CPlaneBasis *) ptDat;
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pb.X.set(invNorm * speedVect->x, invNorm * speedVect->y, 0.f);
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pb.Y.set(- pb.X.y, pb.X.x, 0.f);
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ptDat += stride;
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fpIndex += srcStep;
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}
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break;
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case XZ:
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while (numAttrib --)
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{
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const CVector *speedVect = &(*(speedIt + (fpIndex >> 16)));
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float norm = sqrtf(speedVect->x * speedVect->x + speedVect->z * speedVect->z);
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float invNorm = (norm != 0.f) ? 1.f / norm : 0.f;
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CPlaneBasis &pb = *(CPlaneBasis *) ptDat;
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pb.X.set(invNorm * speedVect->x, 0.f, invNorm * speedVect->z);
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pb.Y.set(- pb.X.z, 0.f, pb.X.x);
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ptDat += stride;
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fpIndex += srcStep;
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}
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break;
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case YZ:
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while (numAttrib --)
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{
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const CVector *speedVect = &(*(speedIt + (fpIndex >> 16)));
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float norm = sqrtf(speedVect->y * speedVect->y + speedVect->z * speedVect->z);
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float invNorm = (norm != 0.f) ? 1.f / norm : 0.f;
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CPlaneBasis &pb = *(CPlaneBasis *) ptDat;
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pb.X.set(0.f, invNorm * speedVect->y, invNorm * speedVect->z);
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pb.Y.set(0.f, - pb.X.z, pb.X.y);
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ptDat += stride;
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fpIndex += srcStep;
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}
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break;
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default:
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nlstop; // unknow projection mode
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break;
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}
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return tab;
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}
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}
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///============================================================================
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void CPSPlaneBasisFollowSpeed::make4(CPSLocated *loc,
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uint32 startIndex,
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void *tab,
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uint32 stride,
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uint32 numAttrib,
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uint32 srcStep /*= (1 << 16)*/
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) const
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{
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nlassert(numAttrib);
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if (srcStep == (1 << 16))
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{
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TPSAttribVector::const_iterator speedIt = loc->getSpeed().begin() + startIndex
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, endSpeedIt = loc->getSpeed().begin() + startIndex + numAttrib;
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uint8 *ptDat = (uint8 *) tab;
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do
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{
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*(CPlaneBasis *) ptDat = CPlaneBasis(*speedIt);
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*(CPlaneBasis *) (ptDat + stride) = *(CPlaneBasis *) ptDat;
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ptDat += stride;
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*(CPlaneBasis *) (ptDat + stride) = *(CPlaneBasis *) ptDat;
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ptDat += stride;
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*(CPlaneBasis *) (ptDat + stride) = *(CPlaneBasis *) ptDat;
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ptDat += stride << 1;
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++ speedIt;
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}
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while (speedIt != endSpeedIt);
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}
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else
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{
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uint32 fpIndex = startIndex * srcStep;
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const TPSAttribVector::const_iterator speedIt = loc->getSpeed().begin();
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uint8 *ptDat = (uint8 *) tab;
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while (numAttrib --)
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{
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*(CPlaneBasis *) ptDat = CPlaneBasis(*(speedIt + (fpIndex >> 16)));
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*(CPlaneBasis *) (ptDat + stride) = *(CPlaneBasis *) ptDat;
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ptDat += stride;
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*(CPlaneBasis *) (ptDat + stride) = *(CPlaneBasis *) ptDat;
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ptDat += stride;
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*(CPlaneBasis *) (ptDat + stride) = *(CPlaneBasis *) ptDat;
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ptDat += stride << 1;
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fpIndex += srcStep;
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}
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}
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}
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///============================================================================
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void CPSPlaneBasisFollowSpeed::makeN(CPSLocated *loc,
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uint32 startIndex,
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void *tab,
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uint32 stride,
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uint32 numAttrib,
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uint32 nbReplicate,
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uint32 srcStep /*= (1 << 16) */
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) const
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{
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nlassert(numAttrib);
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if (srcStep == (1 << 16))
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{
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nlassert(nbReplicate > 1);
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TPSAttribVector::const_iterator speedIt = loc->getSpeed().begin() + startIndex
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, endSpeedIt = loc->getSpeed().begin() + startIndex + numAttrib;
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uint8 *ptDat = (uint8 *) tab;
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uint k;
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do
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{
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*(CPlaneBasis *) ptDat = CPlaneBasis(*speedIt);
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k = nbReplicate - 1;
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do
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{
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*(CPlaneBasis *) (ptDat + stride) = *(CPlaneBasis *) ptDat;
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ptDat += stride;
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}
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while (--k);
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ptDat += stride;
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++ speedIt;
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}
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while (speedIt != endSpeedIt);
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}
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else
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{
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uint32 fpIndex = startIndex * srcStep;
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nlassert(nbReplicate > 1);
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const TPSAttribVector::const_iterator speedIt = loc->getSpeed().begin();
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uint8 *ptDat = (uint8 *) tab;
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uint k;
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while (numAttrib --)
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{
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*(CPlaneBasis *) ptDat = CPlaneBasis(*(speedIt + (fpIndex >> 16)));
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k = nbReplicate - 1;
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do
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{
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*(CPlaneBasis *) (ptDat + stride) = *(CPlaneBasis *) ptDat;
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ptDat += stride;
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}
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while (--k);
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ptDat += stride;
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fpIndex += srcStep;
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}
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}
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}
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/////////////////////////////////////////////
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// CSpinnerFunctor implementation //
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/////////////////////////////////////////////
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///============================================================================
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CSpinnerFunctor::CSpinnerFunctor() : _NbSamples(0), _Axis(NLMISC::CVector::K)
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{
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}
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///============================================================================
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void CSpinnerFunctor::setAxis(const NLMISC::CVector &axis)
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{
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_Axis = axis;
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updateSamples();
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}
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///============================================================================
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void CSpinnerFunctor::setNumSamples(uint32 nbSamples)
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{
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nlassert(nbSamples > 0);
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_NbSamples = nbSamples;
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updateSamples();
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}
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///============================================================================
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uint32 CSpinnerFunctor::getNumSamples(void) const
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{
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return _NbSamples;
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}
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///============================================================================
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void CSpinnerFunctor::serial(NLMISC::IStream &f) throw(NLMISC::EStream)
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{
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f.serialVersion(1);
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f.serial(_Axis, _NbSamples);
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if (f.isReading()) updateSamples();
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}
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///============================================================================
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void CSpinnerFunctor::updateSamples(void)
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{
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if (_NbSamples == 0) return;
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// compute step between each angle
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const float angInc = (float) (2.f * NLMISC::Pi / _NbSamples);
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_PBTab.resize(_NbSamples + 1);
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NLMISC::CMatrix mat;
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CPSUtil::buildSchmidtBasis(_Axis, mat);
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NLMISC::CVector I = mat.getI();
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NLMISC::CVector J = mat.getJ();
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// compute basis for rotation
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for (uint32 k = 0; k < _NbSamples; ++k)
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{
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float ca = cosf(k * angInc);
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float sa = sinf(k * angInc);
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_PBTab[k].X.set(ca * I.x + sa * J.x,
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ca * I.y + sa * J.y,
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ca * I.z + sa * J.z);
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_PBTab[k].Y.set(- sa * I.x + ca * J.x,
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- sa * I.y + ca * J.y,
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- sa * I.z + ca * J.z);
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}
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}
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///============================================================================
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void PSRegisterPlaneBasisAttribs()
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{
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NLMISC_REGISTER_CLASS(CPSPlaneBasisBlender);
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NLMISC_REGISTER_CLASS(CPSPlaneBasisGradient);
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NLMISC_REGISTER_CLASS(CPSPlaneBasisMemory);
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NLMISC_REGISTER_CLASS(CPSPlaneBasisBinOp);
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NLMISC_REGISTER_CLASS(CPSPlaneBasisFollowSpeed);
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NLMISC_REGISTER_CLASS(CPSBasisSpinner);
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}
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} // NL3D
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