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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program 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 3 of the License, or
(at your option) any later version.
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, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
#include "HeadSpin.h"
#include "max.h"
#include "meshdlib.h"
#include "plDicer.h"
static const int kDefFaces = 200;
static const float kDefSize = 1000.f;
plDicer::plDicer()
: fMaxSize(kDefSize, kDefSize, kDefSize),
fMaxFaces(kDefFaces)
{
}
plDicer::~plDicer()
{
}
void plDicer::SetMaxSize(const Point3& size)
{
fMaxSize = size;
}
Point3 plDicer::GetMaxSize() const
{
return fMaxSize;
}
void plDicer::SetMaxFaces(int n)
{
fMaxFaces = n;
}
int plDicer::GetMaxFaces() const
{
return fMaxFaces;
}
BOOL plDicer::Dice(INode* node, INodeTab& out)
{
Object *obj = node->EvalWorldState(TimeValue(0)).obj;
if( !obj )
{
out.Append(1, &node);
return false;
}
if( !obj->CanConvertToType( triObjectClassID ) )
{
out.Append(1, &node);
return false;
}
// Convert to triMesh object
TriObject *meshObj = (TriObject*)obj->ConvertToType(TimeValue(0), triObjectClassID);
if( !meshObj )
{
out.Append(1, &node);
return false;
}
TriObject* newObj = CreateNewTriObject();
newObj->mesh = meshObj->mesh;
plTriObjectTab triList;
if( !IDiceIter(newObj, triList) )
{
delete newObj;
out.Append(1, &node);
return false;
}
IMakeIntoNodes(node, triList, out);
node->Delete(TimeValue(0), true);
return true;
}
BOOL plDicer::IDetach(TriObject* triObj, BitArray& faces, plTriObjectTab& triList)
{
TriObject* newObj = CreateNewTriObject();
Mesh* newMesh = &newObj->mesh;
MeshDelta meshDelta(triObj->mesh);
// meshDelta.Detach(Mesh & m, Mesh *out, BitArray fset, BOOL faces, BOOL del, BOOL elem);
meshDelta.Detach(triObj->mesh, newMesh, faces, true, true, false);
meshDelta.Apply(triObj->mesh);
if( newObj->mesh.getNumFaces() )
triList.Append(1, &newObj);
else
delete newObj;
if( triObj->mesh.getNumFaces() )
{
newObj = CreateNewTriObject();
newObj->mesh = triObj->mesh;
triList.Append(1, &newObj);
}
delete triObj;
return true;
}
BOOL plDicer::IHalf(TriObject* triObj, plTriObjectTab& triList)
{
Mesh& mesh = triObj->mesh;
BitArray faces(mesh.getNumFaces());
int iAxis = 0;
float maxDim = mesh.getBoundingBox().Width()[0];
if( mesh.getBoundingBox().Width()[1] > maxDim )
{
maxDim = mesh.getBoundingBox().Width()[1];
iAxis = 1;
}
if( mesh.getBoundingBox().Width()[2] > maxDim )
{
maxDim = mesh.getBoundingBox().Width()[2];
iAxis = 2;
}
float middle = mesh.getBoundingBox().Center()[iAxis];
int numHi = 0;
int i;
for( i = 0; i < mesh.getNumFaces(); i++ )
{
Point3 p[3];
p[0] = mesh.getVert(mesh.faces[i].getVert(0));
p[1] = mesh.getVert(mesh.faces[i].getVert(1));
p[2] = mesh.getVert(mesh.faces[i].getVert(2));
if( (p[0][iAxis] > middle)
&&(p[1][iAxis] > middle)
&&(p[2][iAxis] > middle) )
{
numHi++;
faces.Set(i);
}
}
if( !numHi || (numHi == mesh.getNumFaces()) )
return false;
return IDetach(triObj, faces, triList);
}
BOOL plDicer::IDice(TriObject* triObj, plTriObjectTab& triList)
{
int oneBigger = -1;
int oneSmaller = -1;
BOOL doChop = false;
// First, does he need chopping?
Mesh& mesh = triObj->mesh;
if( mesh.getNumFaces() > GetMaxFaces() )
{
doChop = true;
}
else
{
Box3 bnd = mesh.getBoundingBox();
Point3 wid = bnd.Width();
if( wid.x > GetMaxSize().x )
doChop = true;
if( wid.y > GetMaxSize().y )
doChop = true;
if( wid.z > GetMaxSize().z )
doChop = true;
}
if( !doChop )
return false;
// Okay, we got to chop.
return IHalf(triObj, triList);
}
BOOL plDicer::IDiceIter(TriObject* triObj, plTriObjectTab& triList)
{
triList.ZeroCount();
plTriObjectTab inList;
plTriObjectTab cutList;
inList.Append(1, &triObj);
while( inList.Count() )
{
int i;
for( i = 0; i < inList.Count(); i++ )
{
if( !IDice(inList[i], cutList) )
{
triList.Append(1, &inList[i]);
}
}
inList = cutList;
cutList.ZeroCount();
}
return triList.Count() > 0;
}
BOOL plDicer::IMakeIntoNodes(INode* node, plTriObjectTab& triList, INodeTab& out)
{
NameMaker *nn = GetCOREInterface()->NewNameMaker();
TSTR nodeName(node->GetName());
int i;
for( i = 0; i < triList.Count(); i++ )
{
INode* outNode = GetCOREInterface()->CreateObjectNode(triList[i]);
outNode->SetNodeTM(TimeValue(0), node->GetNodeTM(TimeValue(0)));
outNode->CopyProperties(node);
outNode->SetMtl(node->GetMtl());
outNode->SetObjOffsetPos(node->GetObjOffsetPos());
outNode->SetObjOffsetRot(node->GetObjOffsetRot());
outNode->SetObjOffsetScale(node->GetObjOffsetScale());
nn->MakeUniqueName(nodeName);
outNode->SetName(nodeName);
out.Append(1, &outNode);
}
return true;
}