149 lines
4.6 KiB
C++
149 lines
4.6 KiB
C++
/****************************************************************************
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Copyright (c) 2011-2013,WebJet Business Division,CYOU
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http://www.genesis-3d.com.cn
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include "stdneb.h"
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#include "particleModelEmitter.h"
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#include "particles/particlesystem.h"
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#include "particles/particleemitter.h"
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#include "particles/particle.h"
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#include "resource/meshres.h"
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namespace Particles
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{
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using namespace Math;
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__ImplementClass(Particles::ModelEmitter, Particles::CPFCC::EMITTER_MODEL, Particles::ParticleEmitter);
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//-----------------------------------------------------------------------
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ModelEmitter::ModelEmitter():ParticleEmitter()
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, mMeshName(NULL)
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, mMeshRes(NULL)
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, mEmitType(MMT_VERT)
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{
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mName = "ModelEmitter";
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SetMeshName("sys:box.mesh");
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}
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//--------------------------------------------------------------------------------
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ModelEmitter:: ~ModelEmitter()
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{
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mMeshRes = NULL;
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mVertList.Clear();
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}
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//--------------------------------------------------------------------------------
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void ModelEmitter::SetMeshName(const Util::String& name)
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{
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if (mParentSystem)
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{
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mParentSystem->SetLoadEmitterMesh(false);
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}
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mMeshName = name;
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mMeshRes = NULL;
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mVertList.Clear();
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}
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//--------------------------------------------------------------------------------
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void ModelEmitter::SetMeshRes(void* resource)
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{
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if (mParentSystem)
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{
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mParentSystem->SetLoadEmitterMesh(false);
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}
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mMeshRes = resource;
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}
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//-----------------------------------------------------------------------
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void ModelEmitter::_initParticlePosition(Particle* particle)
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{
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if (!mMeshRes)
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{
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if (mParentSystem)
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mParentSystem->SetLoadEmitterMesh(false);
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return;
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}
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if (mVertList.IsEmpty())
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{
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Resources::MeshRes* meshres = (Resources::MeshRes*)mMeshRes;
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const Resources::NormalData::value_type* normals = meshres->GetVertexData<Resources::NormalData>();
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const Resources::PositionData::value_type* verteies = meshres->GetVertexData<Resources::PositionData>();
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SizeT vertexCount = meshres->GetVertexCount() - 1;
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while ( vertexCount >= 0 )
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{
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ParticleVertexData pVert;
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pVert.mPosition = verteies[vertexCount];
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pVert.mNormal = normals[vertexCount];
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mVertList.Append(pVert);
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vertexCount--;
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}
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}
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switch(mEmitType)
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{
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case MMT_VERT:
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{
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SizeT rndIdx = (SizeT)Math::n_rand(0.0f, (float)mVertList.Size());
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rndIdx = Math::n_min(rndIdx,mVertList.Size()-1);
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particle->mPosition = mVertList[rndIdx].mPosition;
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particle->mDirection = mVertList[rndIdx].mNormal;
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}
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break;
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case MMT_EDGE:
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{
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SizeT rndIdx = (SizeT)Math::n_rand(0.0f, (float)mVertList.Size()-2);
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rndIdx = Math::n_min(rndIdx,mVertList.Size()-3);
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GetRandomEdge(&mVertList[rndIdx], particle->mPosition, particle->mDirection);
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}
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break;
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case MMT_TRIANGLE:
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{
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SizeT rndIdx = (SizeT)Math::n_rand(0.0f, (float)mVertList.Size()-2);
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rndIdx = Math::n_min(rndIdx,mVertList.Size()-3);
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GetRandomTriangle(&mVertList[rndIdx], particle->mPosition, particle->mDirection);
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}
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break;
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default:
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break;
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}
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particle->mDirection *= mNormalSpeed;
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if(mParentSystem->IsMoveWorldCoord())
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{
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particle->mPosition += mParentSystem->GetDerivedPosition();
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particle->mDirection = particle->mDirection.transformVector(mParentSystem->GetWorldMatrix());
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}
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particle->mOrbitPositions.Clear();
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}
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//-----------------------------------------------------------------------
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void ModelEmitter::_initParticleVelocity(Particle* particle)
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{
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if(!IsNormalDir() || EFT_BODY == mInitFromType)
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{
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Super::_initParticleVelocity(particle);
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}
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}
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}
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