mirror of
https://github.com/nillerusr/source-engine.git
synced 2024-12-22 22:27:05 +00:00
333 lines
8.8 KiB
C++
333 lines
8.8 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
|
|
//
|
|
// Purpose:
|
|
//
|
|
// $NoKeywords: $
|
|
//=============================================================================//
|
|
|
|
#include "disp_vrad.h"
|
|
#include "utllinkedlist.h"
|
|
#include "utlvector.h"
|
|
#include "iscratchpad3d.h"
|
|
#include "scratchpadutils.h"
|
|
|
|
|
|
//#define USE_SCRATCHPAD
|
|
#if defined( USE_SCRATCHPAD )
|
|
static IScratchPad3D *g_pPad = 0;
|
|
#endif
|
|
|
|
|
|
int FindNeighborCornerVert( CCoreDispInfo *pDisp, const Vector &vTest )
|
|
{
|
|
CDispUtilsHelper *pDispHelper = pDisp;
|
|
|
|
int iClosest = 0;
|
|
float flClosest = 1e24;
|
|
for ( int iCorner=0; iCorner < 4; iCorner++ )
|
|
{
|
|
// Has it been touched?
|
|
CVertIndex cornerVert = pDispHelper->GetPowerInfo()->GetCornerPointIndex( iCorner );
|
|
int iCornerVert = pDispHelper->VertIndexToInt( cornerVert );
|
|
const Vector &vCornerVert = pDisp->GetVert( iCornerVert );
|
|
|
|
float flDist = vCornerVert.DistTo( vTest );
|
|
if ( flDist < flClosest )
|
|
{
|
|
iClosest = iCorner;
|
|
flClosest = flDist;
|
|
}
|
|
}
|
|
|
|
if ( flClosest <= 0.1f )
|
|
return iClosest;
|
|
else
|
|
return -1;
|
|
}
|
|
|
|
|
|
int GetAllNeighbors( const CCoreDispInfo *pDisp, int (&iNeighbors)[512] )
|
|
{
|
|
int nNeighbors = 0;
|
|
|
|
// Check corner neighbors.
|
|
for ( int iCorner=0; iCorner < 4; iCorner++ )
|
|
{
|
|
const CDispCornerNeighbors *pCorner = pDisp->GetCornerNeighbors( iCorner );
|
|
|
|
for ( int i=0; i < pCorner->m_nNeighbors; i++ )
|
|
{
|
|
if ( nNeighbors < ARRAYSIZE( iNeighbors ) )
|
|
iNeighbors[nNeighbors++] = pCorner->m_Neighbors[i];
|
|
}
|
|
}
|
|
|
|
for ( int iEdge=0; iEdge < 4; iEdge++ )
|
|
{
|
|
const CDispNeighbor *pEdge = pDisp->GetEdgeNeighbor( iEdge );
|
|
|
|
for ( int i=0; i < 2; i++ )
|
|
{
|
|
if ( pEdge->m_SubNeighbors[i].IsValid() )
|
|
if ( nNeighbors < 512 )
|
|
iNeighbors[nNeighbors++] = pEdge->m_SubNeighbors[i].GetNeighborIndex();
|
|
}
|
|
}
|
|
|
|
return nNeighbors;
|
|
}
|
|
|
|
|
|
void BlendCorners( CCoreDispInfo **ppListBase, int listSize )
|
|
{
|
|
CUtlVector<int> nbCornerVerts;
|
|
|
|
for ( int iDisp=0; iDisp < listSize; iDisp++ )
|
|
{
|
|
CCoreDispInfo *pDisp = ppListBase[iDisp];
|
|
|
|
int iNeighbors[512];
|
|
int nNeighbors = GetAllNeighbors( pDisp, iNeighbors );
|
|
|
|
// Make sure we have room for all the neighbors.
|
|
nbCornerVerts.RemoveAll();
|
|
nbCornerVerts.EnsureCapacity( nNeighbors );
|
|
nbCornerVerts.AddMultipleToTail( nNeighbors );
|
|
|
|
// For each corner.
|
|
for ( int iCorner=0; iCorner < 4; iCorner++ )
|
|
{
|
|
// Has it been touched?
|
|
CVertIndex cornerVert = pDisp->GetCornerPointIndex( iCorner );
|
|
int iCornerVert = pDisp->VertIndexToInt( cornerVert );
|
|
const Vector &vCornerVert = pDisp->GetVert( iCornerVert );
|
|
|
|
// For each displacement sharing this corner..
|
|
Vector vAverage = pDisp->GetNormal( iCornerVert );
|
|
|
|
for ( int iNeighbor=0; iNeighbor < nNeighbors; iNeighbor++ )
|
|
{
|
|
int iNBListIndex = iNeighbors[iNeighbor];
|
|
CCoreDispInfo *pNeighbor = ppListBase[iNBListIndex];
|
|
|
|
// Find out which vert it is on the neighbor.
|
|
int iNBCorner = FindNeighborCornerVert( pNeighbor, vCornerVert );
|
|
if ( iNBCorner == -1 )
|
|
{
|
|
nbCornerVerts[iNeighbor] = -1; // remove this neighbor from the list.
|
|
}
|
|
else
|
|
{
|
|
CVertIndex viNBCornerVert = pNeighbor->GetCornerPointIndex( iNBCorner );
|
|
int iNBVert = pNeighbor->VertIndexToInt( viNBCornerVert );
|
|
nbCornerVerts[iNeighbor] = iNBVert;
|
|
vAverage += pNeighbor->GetNormal( iNBVert );
|
|
}
|
|
}
|
|
|
|
|
|
// Blend all the neighbor normals with this one.
|
|
VectorNormalize( vAverage );
|
|
pDisp->SetNormal( iCornerVert, vAverage );
|
|
|
|
#if defined( USE_SCRATCHPAD )
|
|
ScratchPad_DrawArrowSimple(
|
|
g_pPad,
|
|
pDisp->GetVert( iCornerVert ),
|
|
pDisp->GetNormal( iCornerVert ),
|
|
Vector( 0, 0, 1 ),
|
|
25 );
|
|
#endif
|
|
|
|
for ( int iNeighbor=0; iNeighbor < nNeighbors; iNeighbor++ )
|
|
{
|
|
int iNBListIndex = iNeighbors[iNeighbor];
|
|
if ( nbCornerVerts[iNeighbor] == -1 )
|
|
continue;
|
|
|
|
CCoreDispInfo *pNeighbor = ppListBase[iNBListIndex];
|
|
pNeighbor->SetNormal( nbCornerVerts[iNeighbor], vAverage );
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void BlendTJuncs( CCoreDispInfo **ppListBase, int listSize )
|
|
{
|
|
for ( int iDisp=0; iDisp < listSize; iDisp++ )
|
|
{
|
|
CCoreDispInfo *pDisp = ppListBase[iDisp];
|
|
|
|
for ( int iEdge=0; iEdge < 4; iEdge++ )
|
|
{
|
|
CDispNeighbor *pEdge = pDisp->GetEdgeNeighbor( iEdge );
|
|
|
|
CVertIndex viMidPoint = pDisp->GetEdgeMidPoint( iEdge );
|
|
int iMidPoint = pDisp->VertIndexToInt( viMidPoint );
|
|
|
|
if ( pEdge->m_SubNeighbors[0].IsValid() && pEdge->m_SubNeighbors[1].IsValid() )
|
|
{
|
|
const Vector &vMidPoint = pDisp->GetVert( iMidPoint );
|
|
|
|
CCoreDispInfo *pNeighbor1 = ppListBase[pEdge->m_SubNeighbors[0].GetNeighborIndex()];
|
|
CCoreDispInfo *pNeighbor2 = ppListBase[pEdge->m_SubNeighbors[1].GetNeighborIndex()];
|
|
|
|
int iNBCorners[2];
|
|
iNBCorners[0] = FindNeighborCornerVert( pNeighbor1, vMidPoint );
|
|
iNBCorners[1] = FindNeighborCornerVert( pNeighbor2, vMidPoint );
|
|
|
|
if ( iNBCorners[0] != -1 && iNBCorners[1] != -1 )
|
|
{
|
|
CVertIndex viNBCorners[2] =
|
|
{
|
|
pNeighbor1->GetCornerPointIndex( iNBCorners[0] ),
|
|
pNeighbor2->GetCornerPointIndex( iNBCorners[1] )
|
|
};
|
|
|
|
Vector vAverage = pDisp->GetNormal( iMidPoint );
|
|
vAverage += pNeighbor1->GetNormal( viNBCorners[0] );
|
|
vAverage += pNeighbor2->GetNormal( viNBCorners[1] );
|
|
|
|
VectorNormalize( vAverage );
|
|
pDisp->SetNormal( iMidPoint, vAverage );
|
|
pNeighbor1->SetNormal( viNBCorners[0], vAverage );
|
|
pNeighbor2->SetNormal( viNBCorners[1], vAverage );
|
|
|
|
#if defined( USE_SCRATCHPAD )
|
|
ScratchPad_DrawArrowSimple( g_pPad, pDisp->GetVert( iMidPoint ), pDisp->GetNormal( iMidPoint ), Vector( 0, 1, 1 ), 25 );
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
void BlendEdges( CCoreDispInfo **ppListBase, int listSize )
|
|
{
|
|
for ( int iDisp=0; iDisp < listSize; iDisp++ )
|
|
{
|
|
CCoreDispInfo *pDisp = ppListBase[iDisp];
|
|
|
|
for ( int iEdge=0; iEdge < 4; iEdge++ )
|
|
{
|
|
CDispNeighbor *pEdge = pDisp->GetEdgeNeighbor( iEdge );
|
|
|
|
for ( int iSub=0; iSub < 2; iSub++ )
|
|
{
|
|
CDispSubNeighbor *pSub = &pEdge->m_SubNeighbors[iSub];
|
|
if ( !pSub->IsValid() )
|
|
continue;
|
|
|
|
CCoreDispInfo *pNeighbor = ppListBase[ pSub->GetNeighborIndex() ];
|
|
|
|
int iEdgeDim = g_EdgeDims[iEdge];
|
|
|
|
CDispSubEdgeIterator it;
|
|
it.Start( pDisp, iEdge, iSub, true );
|
|
|
|
// Get setup on the first corner vert.
|
|
it.Next();
|
|
CVertIndex viPrevPos = it.GetVertIndex();
|
|
|
|
while ( it.Next() )
|
|
{
|
|
// Blend the two.
|
|
if ( !it.IsLastVert() )
|
|
{
|
|
Vector vAverage = pDisp->GetNormal( it.GetVertIndex() ) + pNeighbor->GetNormal( it.GetNBVertIndex() );
|
|
VectorNormalize( vAverage );
|
|
|
|
pDisp->SetNormal( it.GetVertIndex(), vAverage );
|
|
pNeighbor->SetNormal( it.GetNBVertIndex(), vAverage );
|
|
|
|
#if defined( USE_SCRATCHPAD )
|
|
ScratchPad_DrawArrowSimple( g_pPad, pDisp->GetVert( it.GetVertIndex() ), pDisp->GetNormal( it.GetVertIndex() ), Vector( 1, 0, 0 ), 25 );
|
|
#endif
|
|
}
|
|
|
|
// Now blend the in-between verts (if this edge is high-res).
|
|
int iPrevPos = viPrevPos[ !iEdgeDim ];
|
|
int iCurPos = it.GetVertIndex()[ !iEdgeDim ];
|
|
|
|
for ( int iTween = iPrevPos+1; iTween < iCurPos; iTween++ )
|
|
{
|
|
float flPercent = RemapVal( iTween, iPrevPos, iCurPos, 0, 1 );
|
|
Vector vNormal;
|
|
VectorLerp( pDisp->GetNormal( viPrevPos ), pDisp->GetNormal( it.GetVertIndex() ), flPercent, vNormal );
|
|
VectorNormalize( vNormal );
|
|
|
|
CVertIndex viTween;
|
|
viTween[iEdgeDim] = it.GetVertIndex()[ iEdgeDim ];
|
|
viTween[!iEdgeDim] = iTween;
|
|
pDisp->SetNormal( viTween, vNormal );
|
|
|
|
#if defined( USE_SCRATCHPAD )
|
|
ScratchPad_DrawArrowSimple( g_pPad, pDisp->GetVert( viTween ), pDisp->GetNormal( viTween ), Vector( 1, 0.5, 0 ), 25 );
|
|
#endif
|
|
}
|
|
|
|
viPrevPos = it.GetVertIndex();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
#if defined( USE_SCRATCHPAD )
|
|
void ScratchPad_DrawOriginalNormals( const CCoreDispInfo *pListBase, int listSize )
|
|
{
|
|
for ( int i=0; i < listSize; i++ )
|
|
{
|
|
const CCoreDispInfo *pDisp = &pListBase[i];
|
|
const CPowerInfo *pPowerInfo = pDisp->GetPowerInfo();
|
|
|
|
// Draw the triangles.
|
|
for ( int iTri=0; iTri < pPowerInfo->GetNumTriInfos(); iTri++ )
|
|
{
|
|
const CTriInfo *pTriInfo = pPowerInfo->GetTriInfo( iTri );
|
|
|
|
for ( int iLine=0; iLine < 3; iLine++ )
|
|
{
|
|
const Vector &v1 = pDisp->GetVert( pTriInfo->m_Indices[iLine] );
|
|
const Vector &v2 = pDisp->GetVert( pTriInfo->m_Indices[(iLine+1)%3] );
|
|
|
|
g_pPad->DrawLine( CSPVert( v1 ), CSPVert( v2 ) );
|
|
}
|
|
}
|
|
|
|
// Draw the normals.
|
|
CDispCircumferenceIterator it( pPowerInfo->GetSideLength() );
|
|
while ( it.Next() )
|
|
{
|
|
ScratchPad_DrawArrowSimple(
|
|
g_pPad,
|
|
pDisp->GetVert( it.GetVertIndex() ),
|
|
pDisp->GetNormal( it.GetVertIndex() ),
|
|
Vector( 0, 1, 0 ),
|
|
15 );
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
void SmoothNeighboringDispSurfNormals( CCoreDispInfo **ppListBase, int listSize )
|
|
{
|
|
//#if defined( USE_SCRATCHPAD )
|
|
// g_pPad = ScratchPad3D_Create();
|
|
// ScratchPad_DrawOriginalNormals( pListBase, listSize );
|
|
//#endif
|
|
|
|
BlendTJuncs( ppListBase, listSize );
|
|
|
|
BlendCorners( ppListBase, listSize );
|
|
|
|
BlendEdges( ppListBase, listSize );
|
|
}
|
|
|
|
|
|
|