Serious-Engine/Sources/Engine/Models/MipMaker.cpp

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2016-03-12 01:20:51 +01:00
/* Copyright (c) 2002-2012 Croteam Ltd.
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License as published by
the Free Software Foundation
This program 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 this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */
2016-03-11 14:57:17 +01:00
#include "stdh.h"
#include <Engine/Models/MipMaker.h>
#include <Engine/Math/Vector.h>
#include <Engine/Base/FileName.h>
#include <Engine/Base/ErrorReporting.h>
#include <Engine/Templates/DynamicArray.cpp>
#include <Engine/Templates/DynamicContainer.cpp>
// if vertex removing should occure only inside surfaces
static BOOL _bPreserveSurfaces;
CMipModel::~CMipModel()
{
mm_amsSurfaces.Clear();
mm_ampPolygons.Clear();
mm_amvVertices.Clear();
}
CMipVertex::CMipVertex()
{
}
CMipVertex::~CMipVertex()
{
}
void CMipVertex::Clear()
{
}
CMipPolygon::CMipPolygon()
{
mp_pmpvFirstPolygonVertex = NULL;
}
CMipPolygon::~CMipPolygon()
{
Clear();
}
void CMipPolygon::Clear()
{
if (mp_pmpvFirstPolygonVertex!=NULL) {
// delete all vertices in this polygon
CMipPolygonVertex *pmpvCurrentInPolygon = mp_pmpvFirstPolygonVertex;
do
{
CMipPolygonVertex *pvNextInPolygon = pmpvCurrentInPolygon->mpv_pmpvNextInPolygon;
delete pmpvCurrentInPolygon;
pmpvCurrentInPolygon = pvNextInPolygon;
}
while( pmpvCurrentInPolygon != mp_pmpvFirstPolygonVertex);
}
mp_pmpvFirstPolygonVertex = NULL;
}
void CMipModel::ToObject3D( CObject3D &objDestination)
{
// add one sector
CObjectSector *pOS = objDestination.ob_aoscSectors.New(1);
// add vertices to sector
pOS->osc_aovxVertices.New( mm_amvVertices.Count());
pOS->osc_aovxVertices.Lock();
INDEX iVertice = 0;
FOREACHINDYNAMICARRAY( mm_amvVertices, CMipVertex, itVertice)
{
FLOAT3D vRestFrame = itVertice->mv_vRestFrameCoordinate;
pOS->osc_aovxVertices[ iVertice] = FLOATtoDOUBLE( vRestFrame);
iVertice++;
}
// add mip surfaces as materials to object 3d
pOS->osc_aomtMaterials.New( mm_amsSurfaces.Count());
pOS->osc_aomtMaterials.Lock();
INDEX iMaterial = 0;
FOREACHINDYNAMICARRAY( mm_amsSurfaces, CMipSurface, itSurface)
{
pOS->osc_aomtMaterials[ iMaterial].omt_Name = itSurface->ms_strName;
pOS->osc_aomtMaterials[ iMaterial].omt_Color = itSurface->ms_colColor;
iMaterial ++;
}
// add polygons to object 3d
FOREACHINDYNAMICARRAY( mm_ampPolygons, CMipPolygon, itPolygon)
{
// prepare array of polygon vertex indices
INDEX aivVertices[ 32];
CMipPolygonVertex *pmpvPolygonVertex = itPolygon->mp_pmpvFirstPolygonVertex;
INDEX ctPolygonVertices = 0;
do
{
ASSERT( ctPolygonVertices<32);
if( ctPolygonVertices >= 32) break;
// add global index of vertex to list of vertex indices of polygon
mm_amvVertices.Lock();
aivVertices[ ctPolygonVertices] =
mm_amvVertices.Index( pmpvPolygonVertex->mpv_pmvVertex);
mm_amvVertices.Unlock();
pmpvPolygonVertex = pmpvPolygonVertex->mpv_pmpvNextInPolygon;
ctPolygonVertices ++;
}
while( pmpvPolygonVertex != itPolygon->mp_pmpvFirstPolygonVertex);
// add current polygon
pOS->CreatePolygon( ctPolygonVertices, aivVertices,
pOS->osc_aomtMaterials[ itPolygon->mp_iSurface], 0, FALSE);
}
pOS->osc_aomtMaterials.Unlock();
pOS->osc_aovxVertices.Unlock();
}
void CMipModel::FromObject3D_t( CObject3D &objRestFrame, CObject3D &objMipSourceFrame)
{
INDEX ctInvalidVertices = 0;
CTString strInvalidVertices;
char achrErrorVertice[ 256];
objMipSourceFrame.ob_aoscSectors.Lock();
objRestFrame.ob_aoscSectors.Lock();
// lock object sectors dynamic array
objMipSourceFrame.ob_aoscSectors[0].LockAll();
objRestFrame.ob_aoscSectors[0].LockAll();
CObjectSector *pOS = &objMipSourceFrame.ob_aoscSectors[0];
// add mip surface
mm_amsSurfaces.New( pOS->osc_aomtMaterials.Count());
// copy material data from object 3d to mip surfaces
INDEX iMaterial = 0;
FOREACHINDYNAMICARRAY( mm_amsSurfaces, CMipSurface, itSurface)
{
itSurface->ms_strName = pOS->osc_aomtMaterials[ iMaterial].omt_Name;
itSurface->ms_colColor = pOS->osc_aomtMaterials[ iMaterial].omt_Color;
iMaterial ++;
}
// add mip vertices
mm_amvVertices.New( pOS->osc_aovxVertices.Count());
// copy vertice coordinates from object3d to mip vertices
INDEX iVertice = 0;
{FOREACHINDYNAMICARRAY( mm_amvVertices, CMipVertex, itVertice)
{
(FLOAT3D &)(*itVertice) = DOUBLEtoFLOAT( pOS->osc_aovxVertices[ iVertice]);
itVertice->mv_vRestFrameCoordinate =
DOUBLEtoFLOAT( objRestFrame.ob_aoscSectors[0].osc_aovxVertices[ iVertice]);
// calculate bounding box of all vertices
mm_boxBoundingBox |= *itVertice;
iVertice++;
}}
// add mip polygons
mm_ampPolygons.New( pOS->osc_aopoPolygons.Count());
// copy polygons object 3d to mip polygons
INDEX iPolygon = 0;
FOREACHINDYNAMICARRAY( mm_ampPolygons, CMipPolygon, itPolygon)
{
CObjectPolygon &opoPolygon = pOS->osc_aopoPolygons[ iPolygon];
CMipPolygon &mpPolygon = itPolygon.Current();
INDEX ctPolygonVertices = opoPolygon.opo_PolygonEdges.Count();
// allocate polygon vertices
CMipPolygonVertex *ppvPolygonVertices[ 32];
INDEX iPolygonVertice=0;
for( ; iPolygonVertice<ctPolygonVertices; iPolygonVertice++)
{
// allocate one polygon vertex
ppvPolygonVertices[ iPolygonVertice] = new( CMipPolygonVertex);
}
opoPolygon.opo_PolygonEdges.Lock();
// for each polygon vertex in the polygon
for( iPolygonVertice=0; iPolygonVertice<ctPolygonVertices; iPolygonVertice++)
{
CMipPolygonVertex *ppvPolygonVertex = ppvPolygonVertices[ iPolygonVertice];
// get the object vertex as first vertex of the edge
CObjectVertex *povxStart, *povxEnd;
opoPolygon.opo_PolygonEdges[iPolygonVertice].GetVertices( povxStart, povxEnd);
INDEX iVertexInSector = pOS->osc_aovxVertices.Index( povxStart);
// set references to mip polygon and mip vertex
ppvPolygonVertex->mpv_pmpPolygon = &mpPolygon;
mm_amvVertices.Lock();
ppvPolygonVertex->mpv_pmvVertex = &mm_amvVertices[iVertexInSector];
mm_amvVertices.Unlock();
// link to previous and next vertices in the mip polygon
INDEX iNext=(iPolygonVertice+1)%ctPolygonVertices;
ppvPolygonVertex->mpv_pmpvNextInPolygon = ppvPolygonVertices[ iNext];
}
opoPolygon.opo_PolygonEdges.Unlock();
// set first polygon vertex ptr and surface index to polygon
itPolygon->mp_pmpvFirstPolygonVertex = ppvPolygonVertices[ 0];
itPolygon->mp_iSurface =
pOS->osc_aomtMaterials.Index( opoPolygon.opo_Material);
iPolygon++;
}
objRestFrame.ob_aoscSectors[0].UnlockAll();
// unlock all dynamic arrays in sector
objMipSourceFrame.ob_aoscSectors[0].UnlockAll();
objRestFrame.ob_aoscSectors.Unlock();
objMipSourceFrame.ob_aoscSectors.Unlock();
if( ctInvalidVertices != 0)
{
sprintf( achrErrorVertice,
"%d invalid vertices found\n-------------------------\n\n", ctInvalidVertices);
strInvalidVertices = CTString( achrErrorVertice) + strInvalidVertices;
strInvalidVertices.Save_t( CTFileName(CTString("Temp\\ErrorVertices.txt")));
ThrowF_t( "%d invalid vertices found.\nUnable to create mip models.\nList of vertices "
"that must be fixed can be found in file: \"Temp\\ErrorVertices.txt\".",
ctInvalidVertices);
}
}
void CMipModel::CheckObjectValidity(void)
{
// for all polygons
FOREACHINDYNAMICARRAY( mm_ampPolygons, CMipPolygon, itPolygon)
{
CMipPolygon &mpMipPolygon = *itPolygon;
CMipPolygonVertex *pvFirstInPolygon = mpMipPolygon.mp_pmpvFirstPolygonVertex;
CMipPolygonVertex *pvCurrent = pvFirstInPolygon;
do
{
ASSERT( pvCurrent->mpv_pmpPolygon == &mpMipPolygon);
pvCurrent = pvCurrent->mpv_pmpvNextInPolygon;
}
while( pvCurrent != pvFirstInPolygon);
}
}
FLOAT CMipModel::GetGoodness(CMipVertex *pmvSource, CMipVertex *pmvTarget)
{
if( (_bPreserveSurfaces) && (pmvSource->mv_iSurface == -2) ) return -10000.0f;
FLOAT fDistST = ( *pmvSource - *pmvTarget).Length();
FLOAT fDistBBoxCenterT = ( mm_boxBoundingBox.Center() - *pmvTarget).Length();
return fDistBBoxCenterT/100.0f + 1.0f/fDistST;
}
INDEX CMipModel::FindSurfacesForVertices(void)
{
{FOREACHINDYNAMICARRAY( mm_amvVertices, CMipVertex, itVertice)
{
itVertice->mv_iSurface = -1;
}}
// for all polygons
{FOREACHINDYNAMICARRAY( mm_ampPolygons, CMipPolygon, itPolygon)
{
// for all vertices in this polygon
CMipPolygonVertex *pmpvCurrentInPolygon = itPolygon->mp_pmpvFirstPolygonVertex;
do
{
CMipVertex *pmvVertex = pmpvCurrentInPolygon->mpv_pmvVertex;
if( pmvVertex->mv_iSurface == -1) pmvVertex->mv_iSurface = itPolygon->mp_iSurface;
else if( pmvVertex->mv_iSurface == -2); // do nothing
else if( pmvVertex->mv_iSurface == itPolygon->mp_iSurface); // do nothing
else pmvVertex->mv_iSurface = -2;
pmpvCurrentInPolygon = pmpvCurrentInPolygon->mpv_pmpvNextInPolygon;
}
while( pmpvCurrentInPolygon != itPolygon->mp_pmpvFirstPolygonVertex);
}}
// count vertices that are sourounded with only one surface
INDEX ctVerticesWithOneSurface = 0;
// for all vertices
{FOREACHINDYNAMICARRAY( mm_amvVertices, CMipVertex, itVertice)
{
if( itVertice->mv_iSurface >= 0) ctVerticesWithOneSurface++;
}}
return ctVerticesWithOneSurface;
}
void CMipModel::JoinVertexPair( CMipVertex *pmvBestSource, CMipVertex *pmvBestTarget)
{
// for all polygons
{FOREACHINDYNAMICARRAY( mm_ampPolygons, CMipPolygon, itPolygon)
{
// for all vertices in this polygon
CMipPolygonVertex *pmpvCurrentInPolygon = itPolygon->mp_pmpvFirstPolygonVertex;
do
{
if( pmpvCurrentInPolygon->mpv_pmvVertex == pmvBestSource)
{
pmpvCurrentInPolygon->mpv_pmvVertex = pmvBestTarget;
}
pmpvCurrentInPolygon = pmpvCurrentInPolygon->mpv_pmpvNextInPolygon;
}
while( pmpvCurrentInPolygon != itPolygon->mp_pmpvFirstPolygonVertex);
}}
// delete best source vertex
mm_amvVertices.Delete( pmvBestSource);
// for all polygons
{FOREACHINDYNAMICARRAY( mm_ampPolygons, CMipPolygon, itPolygon)
{
// for all vertices in this polygon
CMipPolygonVertex *pmpvCurrentInPolygon = itPolygon->mp_pmpvFirstPolygonVertex;
do
{
CMipPolygonVertex *pmpvSuccesor = pmpvCurrentInPolygon->mpv_pmpvNextInPolygon;
// if current vertex and its sucessor are same mip vertex
if( pmpvCurrentInPolygon->mpv_pmvVertex == pmpvSuccesor->mpv_pmvVertex)
{
// enable looping even if vertex that is first in polygon is deleted
if( pmpvSuccesor == itPolygon->mp_pmpvFirstPolygonVertex)
{
itPolygon->mp_pmpvFirstPolygonVertex = pmpvSuccesor->mpv_pmpvNextInPolygon;
}
// relink current vertex over sucessor
pmpvCurrentInPolygon->mpv_pmpvNextInPolygon = pmpvSuccesor->mpv_pmpvNextInPolygon;
// delete sucessor vertex
delete pmpvSuccesor;
}
pmpvCurrentInPolygon = pmpvCurrentInPolygon->mpv_pmpvNextInPolygon;
}
while( pmpvCurrentInPolygon != itPolygon->mp_pmpvFirstPolygonVertex);
}}
CDynamicContainer<CMipPolygon> cPolygonsToDelete;
// for all polygons
{FOREACHINDYNAMICARRAY( mm_ampPolygons, CMipPolygon, itPolygon)
{
CMipPolygonVertex *pmpvFirst = itPolygon->mp_pmpvFirstPolygonVertex;
// if this is polygon with one or two vertices
if( (pmpvFirst->mpv_pmpvNextInPolygon == pmpvFirst) ||
(pmpvFirst->mpv_pmpvNextInPolygon->mpv_pmpvNextInPolygon == pmpvFirst) )
{
// add it to container for deleting
cPolygonsToDelete.Add( &itPolygon.Current());
}
}}
// delete polygons
{FOREACHINDYNAMICCONTAINER(cPolygonsToDelete, CMipPolygon, itPolygon)
{
mm_ampPolygons.Delete( &itPolygon.Current());
}}
}
void CMipModel::FindBestVertexPair( CMipVertex *&pmvBestSource, CMipVertex *&pmvBestTarget)
{
pmvBestSource = NULL;
pmvBestTarget = NULL;
FLOAT fBestGoodnes = -999999.9f;
// for all polygons
{FOREACHINDYNAMICARRAY( mm_ampPolygons, CMipPolygon, itPolygon)
{
// for all vertices in this polygon
CMipPolygonVertex *pmpvCurrentInPolygon = itPolygon->mp_pmpvFirstPolygonVertex;
do
{
CMipVertex *pmvSource = pmpvCurrentInPolygon->mpv_pmvVertex;
CMipVertex *pmvDestination = pmpvCurrentInPolygon->mpv_pmpvNextInPolygon->mpv_pmvVertex;
FLOAT fCurrentGoodnes = GetGoodness( pmvSource, pmvDestination);
if( fCurrentGoodnes > fBestGoodnes)
{
fBestGoodnes = fCurrentGoodnes;
pmvBestSource = pmvSource;
pmvBestTarget = pmvDestination;
}
// now for inverted order
pmvSource = pmpvCurrentInPolygon->mpv_pmpvNextInPolygon->mpv_pmvVertex;
pmvDestination = pmpvCurrentInPolygon->mpv_pmvVertex;
fCurrentGoodnes = GetGoodness( pmvSource, pmvDestination);
if( fCurrentGoodnes > fBestGoodnes)
{
fBestGoodnes = fCurrentGoodnes;
pmvBestSource = pmvSource;
pmvBestTarget = pmvDestination;
}
pmpvCurrentInPolygon = pmpvCurrentInPolygon->mpv_pmpvNextInPolygon;
}
while( pmpvCurrentInPolygon != itPolygon->mp_pmpvFirstPolygonVertex);
}}
ASSERT( (pmvBestSource != NULL) && (pmvBestTarget != NULL) );
ASSERT( pmvBestSource != pmvBestTarget);
}
void CMipModel::RemoveUnusedVertices(void)
{
// if there are no vertices
if (mm_amvVertices.Count()==0) {
// do nothing
return;
}
// clear all vertex tags
{FOREACHINDYNAMICARRAY(mm_amvVertices, CMipVertex, itmvtx) {
itmvtx->mv_bUsed = FALSE;
}}
// mark all vertices that are used by some polygon
{FOREACHINDYNAMICARRAY(mm_ampPolygons, CMipPolygon, itpo) {
CMipPolygonVertex *pmpvCurrentInPolygon = itpo->mp_pmpvFirstPolygonVertex;
do
{
pmpvCurrentInPolygon->mpv_pmvVertex->mv_bUsed = TRUE;
pmpvCurrentInPolygon = pmpvCurrentInPolygon->mpv_pmpvNextInPolygon;
}
while( pmpvCurrentInPolygon != itpo->mp_pmpvFirstPolygonVertex);
}}
// find number of used vertices
INDEX ctUsedVertices = 0;
{FOREACHINDYNAMICARRAY(mm_amvVertices, CMipVertex, itmvtx) {
if (itmvtx->mv_bUsed) {
ctUsedVertices++;
}
}}
// create a new array with as much vertices as we have counted in last pass
CDynamicArray<CMipVertex> amvxNew;
CMipVertex *pmvxUsed = amvxNew.New(ctUsedVertices);
// for each vertex
{FOREACHINDYNAMICARRAY(mm_amvVertices, CMipVertex, itmvtx) {
// if it is used
if (itmvtx->mv_bUsed) {
// copy it to new array
*pmvxUsed = itmvtx.Current();
// set its remap pointer into new array
itmvtx->mv_pmvxRemap = pmvxUsed;
pmvxUsed++;
// if it is not used
} else {
// clear its remap pointer (for debugging)
#ifndef NDEBUG
itmvtx->mv_pmvxRemap = NULL;
#endif
}
}}
// for each polygon
{FOREACHINDYNAMICARRAY(mm_ampPolygons, CMipPolygon, itpo) {
// for each polygon vertex in polygon
CMipPolygonVertex *pmpvCurrentInPolygon = itpo->mp_pmpvFirstPolygonVertex;
do
{
// remap pointer to vertex
pmpvCurrentInPolygon->mpv_pmvVertex = pmpvCurrentInPolygon->mpv_pmvVertex->mv_pmvxRemap;
pmpvCurrentInPolygon = pmpvCurrentInPolygon->mpv_pmpvNextInPolygon;
}
while( pmpvCurrentInPolygon != itpo->mp_pmpvFirstPolygonVertex);
}}
// use new array of vertices instead of the old one
mm_amvVertices.Clear();
mm_amvVertices.MoveArray(amvxNew);
}
BOOL CMipModel::CreateMipModel_t(INDEX ctVerticesToRemove, INDEX iSurfacePreservingFactor)
{
if( ctVerticesToRemove>mm_amvVertices.Count()) return FALSE;
for( INDEX ctRemoved = 0; ctRemoved<ctVerticesToRemove; ctRemoved++)
{
INDEX ctVerticesWithOneSurface = FindSurfacesForVertices();
// setup flag for preserving surfaces
_bPreserveSurfaces = TRUE;
if( (ctVerticesWithOneSurface == 0) ||
(( ((FLOAT)ctVerticesWithOneSurface) / mm_amvVertices.Count())*100 <=
(100-iSurfacePreservingFactor)) )
{
_bPreserveSurfaces = FALSE;
}
CMipVertex *pmvBestSource, *pmvBestTarget;
FindBestVertexPair( pmvBestSource, pmvBestTarget);
JoinVertexPair( pmvBestSource, pmvBestTarget);
RemoveUnusedVertices();
if( mm_amvVertices.Count() == 0) return FALSE;
}
return TRUE;
}