LGram16
dd97ddec92
Move git root from Client/ to src/ to track all source code: - Client: Game client source (moved to Client/Client/) - Server: Game server source - GameTools: Development tools - CryptoSource: Encryption utilities - database: Database scripts - Script: Game scripts - rylCoder_16.02.2008_src: Legacy coder tools - GMFont, Game: Additional resources 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
104 lines
2.3 KiB
C++
104 lines
2.3 KiB
C++
// ShadowVolume.cpp: implementation of the CShadowVolume class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "ShadowVolume.h"
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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CShadowVolume::CShadowVolume()
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{
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}
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CShadowVolume::~CShadowVolume()
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{
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}
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void CShadowVolume::MakeShadowVolumeDirectionLight(vector3 *pVertex, int nVertex, WORD *pIndices, int nIndices,vector3 vecLightDir)
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{
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vector3 vecPoly[3];
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vector3 vecNormal;
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WORD *pEdges=new WORD[nIndices*6];
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int nEdges=0;
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vecLightDir.Normalize();
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for(int i=0;i<nIndices;i++)
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{
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vecPoly[0]=pVertex[pIndices[3*i+0]];
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vecPoly[1]=pVertex[pIndices[3*i+1]];
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vecPoly[2]=pVertex[pIndices[3*i+2]];
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vecNormal=(vecPoly[2]-vecPoly[1])^(vecPoly[1]-vecPoly[0]);
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vecNormal.Normalize();
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if(vecNormal*vecLightDir >=0.0f)
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{
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AddEdge(pEdges,nEdges,pIndices[3*i+0],pIndices[3*i+1]);
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AddEdge(pEdges,nEdges,pIndices[3*i+1],pIndices[3*i+2]);
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AddEdge(pEdges,nEdges,pIndices[3*i+2],pIndices[3*i+0]);
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}
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}
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vector3 vecVol[4];
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for(i=0;i<nEdges;i++)
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{
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vecVol[0]=pVertex[pEdges[2*i+0]];
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vecVol[1]=pVertex[pEdges[2*i+1]];
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vecVol[2]=vecVol[0]+vecLightDir*50000.0f;
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vecVol[3]=vecVol[1]+vecLightDir*50000.0f;
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m_ShadowVolumeVertexList.Add(vecVol[0]);
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m_ShadowVolumeVertexList.Add(vecVol[1]);
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m_ShadowVolumeVertexList.Add(vecVol[2]);
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m_ShadowVolumeVertexList.Add(vecVol[1]);
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m_ShadowVolumeVertexList.Add(vecVol[3]);
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m_ShadowVolumeVertexList.Add(vecVol[2]);
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}
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delete [] pEdges;
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}
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void CShadowVolume::AddEdge(WORD *pEdges, int &nEdges, WORD v0, WORD v1)
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{
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for(int i=0;i<nEdges;i++)
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{
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if( (pEdges[2*i+0]==v0 && pEdges[2*i+1]==v1) ||
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(pEdges[2*i+0]==v1 && pEdges[2*i+1]==v0) )
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{
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if(nEdges>1)
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{
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pEdges[2*i+0]=pEdges[2*(nEdges-1)+0];
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pEdges[2*i+1]=pEdges[2*(nEdges-1)+1];
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}
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nEdges--;
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return;
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}
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}
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pEdges[2*nEdges+0]=v0;
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pEdges[2*nEdges+1]=v1;
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nEdges++;
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}
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void CShadowVolume::Render(LPDIRECT3DDEVICE8 pd3dDevice)
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{
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pd3dDevice->SetVertexShader(D3DFVF_XYZ);
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if(m_ShadowVolumeVertexList.num>0)
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pd3dDevice->DrawPrimitiveUP(D3DPT_TRIANGLELIST,m_ShadowVolumeVertexList.num/3,m_ShadowVolumeVertexList.element,sizeof(vector3));
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}
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void CShadowVolume::Reset()
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{
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m_ShadowVolumeVertexList.num=0;
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}
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