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Documentation                       Search   lod_character_builder.cpp Go to the documentation of this file. /* Copyright, 2000-2002 Nevrax Ltd. * * This file is part of NEVRAX NEL. * NEVRAX NEL is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2, or (at your option) * any later version. * NEVRAX NEL 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 * General Public License for more details. * You should have received a copy of the GNU General Public License * along with NEVRAX NEL; see the file COPYING. If not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, * MA 02111-1307, USA. */ #include "std3d.h" #include "nel/misc/debug.h" #include "3d/lod_character_builder.h" #include "3d/scene.h" #include "3d/skeleton_shape.h" #include "3d/mesh.h" #include "3d/skeleton_model.h" using namespace std; using namespace NLMISC; namespace NL3D { // *************************************************************************** CLodCharacterBuilder::CLodCharacterBuilder() { _SkeletonShape= NULL; _LodBuild= NULL; _TmpScene= NULL; } // *************************************************************************** CLodCharacterBuilder::~CLodCharacterBuilder() { // release the scene if(_TmpScene) { _TmpScene->release(); delete _TmpScene; _TmpScene= NULL; } } // *************************************************************************** void CLodCharacterBuilder::setShape(const std::string &name, CSkeletonShape *skeletonShape, CLodCharacterShapeBuild *lodBuild) { nlassert(skeletonShape); nlassert(lodBuild); // SmartPtr the skeleton Shape (NB: important because skeletonModel use it) _SkeletonShape= skeletonShape; // a std ptr. _LodBuild= lodBuild; // Remap bone, with help of lodBuild and skeleton names. _BoneRemap.resize(lodBuild->BonesNames.size()); for(uint i=0; i<_BoneRemap.size(); i++) { const std::string &boneName= lodBuild->BonesNames[i]; sint32 boneId= _SkeletonShape->getBoneIdByName(boneName); // If not found if(boneId<0) { nlwarning("Not found a bone in the skeleton Shape: %s", boneName.c_str()); // use root bone. _BoneRemap[i]= 0; } else // remap _BoneRemap[i]= boneId; } // build basics _LodCharacterShape.buildMesh(name, *_LodBuild); // Build a scene, for addAnim purpose if(!_TmpScene) { _TmpScene= new CScene; // Must init Statics for scene (because use it in addAnim). NB: never mind if done twice. CScene::registerBasics(); // init scene travs _TmpScene->initDefaultTravs(); // Don't add any user trav. // init default Roots. _TmpScene->initDefaultRoots(); // Don't Set driver/viewport // Init the world instance group _TmpScene->initGlobalnstanceGroup(); // Init coarse mesh manager _TmpScene->initCoarseMeshManager (); // init QuadGridClipManager _TmpScene->initQuadGridClipManager (); } } // *************************************************************************** void CLodCharacterBuilder::addAnim(const char *animName, CAnimation *animation, float frameRate) { nlassert(frameRate>0); nlassert(animation); /* Create a Scene, a skeletonModel, an animation set, and a channel mixer to play the animation NB: no render is made and no driver is created. The scene is just here for correct creation of the skeleton Yoyo: This is a tricky way, but I found it the easier one... */ // Create Components necesssary to play the animation //========================== // create an animationSet, and a channelMixer. //-------------- // build an animation set with the only one animation. This animation will be deleted with the animationSet CAnimationSet *tmpAnimationSet= new CAnimationSet; tmpAnimationSet->addAnimation(animName, animation); tmpAnimationSet->build(); // Build a channelMixer. CChannelMixer *tmpChannelMixer= new CChannelMixer; tmpChannelMixer->setAnimationSet(tmpAnimationSet); // create a skeleton Model for animation //--------------- CSkeletonModel *skeleton= (CSkeletonModel*)_SkeletonShape->createInstance(*_TmpScene); // and skeleton it with animation skeleton->registerToChannelMixer(tmpChannelMixer, ""); // activate the anim uint animID = tmpAnimationSet->getAnimationIdByName(animName); nlassert(animID != CAnimationSet::NotFound); tmpChannelMixer->setSlotAnimation(0, animID); // Build Dst Animation basics. //-------------- CLodCharacterShape::CAnimBuild dstAnim; dstAnim.Name= animName; dstAnim.AnimLength= animation->getEndTime(); dstAnim.NumKeys= (uint)ceil(dstAnim.AnimLength * frameRate); dstAnim.NumKeys= max(1U, dstAnim.NumKeys); // resize array. dstAnim.Keys.resize(_LodCharacterShape.getNumVertices() * dstAnim.NumKeys); // Bake the animation //========================== double time=0; double dt= 1.0/(double)frameRate; uint64 evalDetaiDate= 0; for(uint i=0; i<dstAnim.NumKeys; i++, time+= dt) { // clamp the time time= min(time, (double)dstAnim.AnimLength); // setup the channelMixer time tmpChannelMixer->setSlotTime(0, (float)time); // Eval the channelMixer, both global and detail tmpChannelMixer->eval(false); tmpChannelMixer->eval(true, evalDetaiDate++); // Use the skeleton model to compute bone skin matrix, supposing an identity skeleton worldMatrix skeleton->computeAllBones(CMatrix::Identity); // apply the skinning from the current skeleton state applySkin(skeleton, &dstAnim.Keys[i*_LodCharacterShape.getNumVertices()]); } // Add the animation to the lod //========================== _LodCharacterShape.addAnim(dstAnim); // Delete //========================== // release the skeleton _TmpScene->deleteModel(skeleton); // delete the channelMixer delete tmpChannelMixer; // delete the animationSet delete tmpAnimationSet; } // *************************************************************************** void CLodCharacterBuilder::applySkin(CSkeletonModel *skeleton, CVector *dstVertices) { uint numVerts= _LodBuild->Vertices.size(); // for all vertices. for(uint i=0; i<numVerts; i++) { CMesh::CSkinWeight &skinWgt= _LodBuild->SkinWeights[i]; CVector &srcVert= _LodBuild->Vertices[i]; CVector &dstVert= dstVertices[i]; dstVert= CVector::Null; // parse all Weights, and add influence. for(uint j=0; j<NL3D_MESH_SKINNING_MAX_MATRIX; j++) { float wgt= skinWgt.Weights[j]; if(wgt==0) { // this should not happen, at least weight 0 should have an influence. if(j==0) dstVert= srcVert; // no more influence for this vertex. break; } else { // Get the skeleton bone to read. uint boneId= _BoneRemap[skinWgt.MatrixId[j]]; // Get the computed matrix from the skeleton. const CMatrix &boneMat= skeleton->Bones[boneId].getBoneSkinMatrix(); // Add the influence of this bone. dstVert+= (boneMat * srcVert) * wgt; } } } } } // NL3D