int main( )
{
MyMesh m;
vcg::tri::Icosahedron(m);
vcg::tri::UpdateNormal<MyMesh>::PerVertexNormalizedPerFaceNormalized(m);
vcg::tri::UpdateBounding<MyMesh>::Box(m);
// As a simple test we get a few random points on a mesh,
// we rot and trans them
// and we fit them
std::vector<vcg::Point3f> ExactVec;
std::vector<vcg::Point3f> PerturbVec;
tri::MontecarloSampling(m,ExactVec,10);
PerturbVec=ExactVec;
Matrix44f RotM;
Matrix44f TraM;
Point3f dir;
vcg::math::MarsenneTwisterRNG rnd;
vcg::math::GeneratePointInUnitBallUniform<float>(rnd);
RotM.SetRotateDeg(rand()%360,dir);
TraM.SetTranslate(1,2,3);
Matrix44f RigidM = RotM*TraM;
for(size_t i=0;i<ExactVec.size();++i)
PerturbVec[i]=RigidM*ExactVec[i];
Quaternionf q;
Point3f tr;
Matrix44f res;
ComputeRigidMatchMatrix(PerturbVec,ExactVec,res);
res.print();
RigidM.print();
return 0;
}
void ShadowMap::GetCurrentPVMatrix(){
float matP[16];
float matMV[16];
glGetFloatv(GL_PROJECTION_MATRIX, matP);
glGetFloatv(GL_MODELVIEW_MATRIX, matMV);
Matrix44f A(matSM[0]);
Matrix44f B(matMV);
Matrix44f C(matP);
A=vcg::Transpose( A );
B=vcg::Transpose( B );
C=vcg::Transpose( C );
Matrix44f P = C*B;
P=vcg::Invert( P );
Matrix44f res = A*P;
Matrix44f mul;
Matrix44f add;
GLint vp[4];
glGetIntegerv(GL_VIEWPORT, vp);
mul.SetScale(Point3f(2.0f/vp[2], 2.0f/vp[3], 2));
add.SetTranslate(Point3f(-1,-1,-1));
//Matrix44f mulHS;
//mulHS.SetScale(Point3f(HSratio,HSratio,1) );
res=res*add*mul;
for (int i=0; i<4; i++)
for (int j=0; j<4; j++)
matFinal[i][j]=res[j][i];
}
// The Real Core Function doing the actual mesh processing.
bool FilterFunctionPlugin::applyFilter(QAction *filter, MeshDocument &md, RichParameterSet & par, vcg::CallBackPos *cb)
{
if(this->getClass(filter) == MeshFilterInterface::MeshCreation)
md.addNewMesh("",this->filterName(ID(filter)));
MeshModel &m=*(md.mm());
Q_UNUSED(cb);
switch(ID(filter)) {
case FF_VERT_SELECTION :
{
std::string expr = par.getString("condSelect").toStdString();
// muparser initialization and explicitely define parser variables
Parser p;
setPerVertexVariables(p,m.cm);
// set expression inserted by user as string (required by muparser)
p.SetExpr(expr);
int numvert = 0;
time_t start = clock();
// every parser variables is related to vertex coord and attributes.
CMeshO::VertexIterator vi;
for(vi = m.cm.vert.begin(); vi != m.cm.vert.end(); ++vi)if(!(*vi).IsD())
{
setAttributes(vi,m.cm);
bool selected = false;
// use parser to evaluate boolean function specified above
// in case of fail, error dialog contains details of parser's error
try {
selected = p.Eval();
} catch(Parser::exception_type &e) {
errorMessage = e.GetMsg().c_str();
return false;
}
// set vertex as selected or clear selection
if(selected) {
(*vi).SetS();
numvert++;
} else (*vi).ClearS();
}
// strict face selection
if(par.getBool("strictSelect"))
tri::UpdateSelection<CMeshO>::FaceFromVertexStrict(m.cm);
else
tri::UpdateSelection<CMeshO>::FaceFromVertexLoose(m.cm);
// if succeded log stream contains number of vertices and time elapsed
Log( "selected %d vertices in %.2f sec.", numvert, (clock() - start) / (float) CLOCKS_PER_SEC);
return true;
}
break;
case FF_FACE_SELECTION :
{
QString select = par.getString("condSelect");
// muparser initialization and explicitely define parser variables
Parser p;
setPerFaceVariables(p,m.cm);
// set expression inserted by user as string (required by muparser)
p.SetExpr(select.toStdString());
int numface = 0;
time_t start = clock();
// every parser variables is related to face attributes.
CMeshO::FaceIterator fi;
for(fi = m.cm.face.begin(); fi != m.cm.face.end(); ++fi)if(!(*fi).IsD())
{
setAttributes(fi,m.cm);
bool selected = false;
// use parser to evaluate boolean function specified above
// in case of fail, error dialog contains details of parser's error
try {
selected = p.Eval();
} catch(Parser::exception_type &e) {
errorMessage = e.GetMsg().c_str();
return false;
}
// set face as selected or clear selection
if(selected) {
(*fi).SetS();
numface++;
} else (*fi).ClearS();
}
// if succeded log stream contains number of vertices and time elapsed
Log( "selected %d faces in %.2f sec.", numface, (clock() - start) / (float) CLOCKS_PER_SEC);
return true;
}
break;
case FF_GEOM_FUNC :
case FF_VERT_COLOR:
case FF_VERT_NORMAL:
{
std::string func_x,func_y,func_z,func_a;
// FF_VERT_COLOR : x = r, y = g, z = b
// FF_VERT_NORMAL : x = r, y = g, z = b
func_x = par.getString("x").toStdString();
func_y = par.getString("y").toStdString();
func_z = par.getString("z").toStdString();
if(ID(filter) == FF_VERT_COLOR) func_a = par.getString("a").toStdString();
// muparser initialization and explicitely define parser variables
// function for x,y and z must use different parser and variables
Parser p1,p2,p3,p4;
setPerVertexVariables(p1,m.cm);
setPerVertexVariables(p2,m.cm);
setPerVertexVariables(p3,m.cm);
setPerVertexVariables(p4,m.cm);
p1.SetExpr(func_x);
p2.SetExpr(func_y);
p3.SetExpr(func_z);
p4.SetExpr(func_a);
double newx=0,newy=0,newz=0,newa=255;
errorMessage = "";
time_t start = clock();
// every parser variables is related to vertex coord and attributes.
CMeshO::VertexIterator vi;
for(vi = m.cm.vert.begin(); vi != m.cm.vert.end(); ++vi)if(!(*vi).IsD())
{
setAttributes(vi,m.cm);
// every function is evaluated by different parser.
// errorMessage dialog contains errors for func x, func y and func z
try { newx = p1.Eval(); } catch(Parser::exception_type &e) { showParserError("1st func : ",e); }
try { newy = p2.Eval(); } catch(Parser::exception_type &e) { showParserError("2nd func : ",e); }
try { newz = p3.Eval(); } catch(Parser::exception_type &e) { showParserError("3rd func : ",e); }
if(ID(filter) == FF_VERT_COLOR)
{
try { newa = p4.Eval(); } catch(Parser::exception_type &e) { showParserError("4th func : ",e); }
}
if(errorMessage != "") return false;
if(ID(filter) == FF_GEOM_FUNC) // set new vertex coord for this iteration
(*vi).P() = Point3f(newx,newy,newz);
if(ID(filter) == FF_VERT_COLOR) // set new color for this iteration
(*vi).C() = Color4b(newx,newy,newz,newa);
if(ID(filter) == FF_VERT_NORMAL) // set new color for this iteration
(*vi).N() = Point3f(newx,newy,newz);
}
if(ID(filter) == FF_GEOM_FUNC) {
// update bounding box, normalize normals
tri::UpdateNormals<CMeshO>::PerVertexNormalizedPerFace(m.cm);
tri::UpdateNormals<CMeshO>::NormalizeFace(m.cm);
tri::UpdateBounding<CMeshO>::Box(m.cm);
}
// if succeded log stream contains number of vertices processed and time elapsed
Log( "%d vertices processed in %.2f sec.", m.cm.vn, (clock() - start) / (float) CLOCKS_PER_SEC);
return true;
}
break;
case FF_VERT_QUALITY:
{
std::string func_q = par.getString("q").toStdString();
m.updateDataMask(MeshModel::MM_VERTQUALITY);
// muparser initialization and define custom variables
Parser p;
setPerVertexVariables(p,m.cm);
// set expression to calc with parser
p.SetExpr(func_q);
// every parser variables is related to vertex coord and attributes.
time_t start = clock();
CMeshO::VertexIterator vi;
for(vi = m.cm.vert.begin(); vi != m.cm.vert.end(); ++vi)
if(!(*vi).IsD())
{
setAttributes(vi,m.cm);
// use parser to evaluate function specified above
// in case of fail, errorMessage dialog contains details of parser's error
try {
(*vi).Q() = p.Eval();
} catch(Parser::exception_type &e) {
errorMessage = e.GetMsg().c_str();
return false;
}
}
// normalize quality with values in [0..1]
if(par.getBool("normalize")) tri::UpdateQuality<CMeshO>::VertexNormalize(m.cm);
// map quality into per-vertex color
if(par.getBool("map")) tri::UpdateColor<CMeshO>::VertexQualityRamp(m.cm);
// if succeded log stream contains number of vertices and time elapsed
Log( "%d vertices processed in %.2f sec.", m.cm.vn, (clock() - start) / (float) CLOCKS_PER_SEC);
return true;
}
break;
case FF_FACE_COLOR:
{
std::string func_r = par.getString("r").toStdString();
std::string func_g = par.getString("g").toStdString();
std::string func_b = par.getString("b").toStdString();
std::string func_a = par.getString("a").toStdString();
// muparser initialization and explicitely define parser variables
// every function must uses own parser and variables
Parser p1,p2,p3,p4;
setPerFaceVariables(p1,m.cm);
setPerFaceVariables(p2,m.cm);
setPerFaceVariables(p3,m.cm);
setPerFaceVariables(p4,m.cm);
p1.SetExpr(func_r);
p2.SetExpr(func_g);
p3.SetExpr(func_b);
p4.SetExpr(func_a);
// RGB is related to every face
CMeshO::FaceIterator fi;
double newr=0,newg=0,newb=0,newa=255;
errorMessage = "";
time_t start = clock();
// every parser variables is related to face attributes.
for(fi = m.cm.face.begin(); fi != m.cm.face.end(); ++fi)if(!(*fi).IsD())
{
setAttributes(fi,m.cm);
// evaluate functions to generate new color
// in case of fail, error dialog contains details of parser's error
try { newr = p1.Eval(); } catch(Parser::exception_type &e) { showParserError("func r: ",e); }
try { newg = p2.Eval(); } catch(Parser::exception_type &e) { showParserError("func g: ",e); }
try { newb = p3.Eval(); } catch(Parser::exception_type &e) { showParserError("func b: ",e); }
try { newa = p4.Eval(); } catch(Parser::exception_type &e) { showParserError("func a: ",e); }
if(errorMessage != "") return false;
// set new color for this iteration
(*fi).C() = Color4b(newr,newg,newb,newa);
}
// if succeded log stream contains number of vertices processed and time elapsed
Log( "%d faces processed in %.2f sec.", m.cm.fn, (clock() - start) / (float) CLOCKS_PER_SEC);
return true;
}
break;
case FF_FACE_QUALITY:
{
std::string func_q = par.getString("q").toStdString();
m.updateDataMask(MeshModel::MM_FACEQUALITY);
// muparser initialization and define custom variables
Parser pf;
setPerFaceVariables(pf,m.cm);
// set expression to calc with parser
pf.SetExpr(func_q);
time_t start = clock();
errorMessage = "";
// every parser variables is related to face attributes.
CMeshO::FaceIterator fi;
for(fi = m.cm.face.begin(); fi != m.cm.face.end(); ++fi)if(!(*fi).IsD())
{
setAttributes(fi,m.cm);
// evaluate functions to generate new quality
// in case of fail, error dialog contains details of parser's error
try { (*fi).Q() = pf.Eval(); }
catch(Parser::exception_type &e) {
showParserError("func q: ",e);
}
if(errorMessage != "") return false;
}
// normalize quality with values in [0..1]
if(par.getBool("normalize")) tri::UpdateQuality<CMeshO>::FaceNormalize(m.cm);
// map quality into per-vertex color
if(par.getBool("map")) tri::UpdateColor<CMeshO>::FaceQualityRamp(m.cm);
// if succeded log stream contains number of faces processed and time elapsed
Log( "%d faces processed in %.2f sec.", m.cm.fn, (clock() - start) / (float) CLOCKS_PER_SEC);
return true;
}
break;
case FF_DEF_VERT_ATTRIB :
{
std::string name = par.getString("name").toStdString();
std::string expr = par.getString("expr").toStdString();
// add per-vertex attribute with type float and name specified by user
CMeshO::PerVertexAttributeHandle<float> h;
if(tri::HasPerVertexAttribute(m.cm,name))
{
h = tri::Allocator<CMeshO>::GetPerVertexAttribute<float>(m.cm, name);
if(!tri::Allocator<CMeshO>::IsValidHandle<float>(m.cm,h))
{
errorMessage = "attribute already exists with a different type";
return false;
}
}
else
h = tri::Allocator<CMeshO>::AddPerVertexAttribute<float> (m.cm,name);
std::vector<std::string> AllVertexAttribName;
tri::Allocator<CMeshO>::GetAllPerVertexAttribute< float >(m.cm,AllVertexAttribName);
qDebug("Now mesh has %i vertex float attribute",AllVertexAttribName.size());
Parser p;
setPerVertexVariables(p,m.cm);
p.SetExpr(expr);
time_t start = clock();
// perform calculation of attribute's value with function specified by user
CMeshO::VertexIterator vi;
for(vi = m.cm.vert.begin(); vi != m.cm.vert.end(); ++vi)if(!(*vi).IsD())
{
setAttributes(vi,m.cm);
// add new user-defined attribute
try {
h[vi] = p.Eval();
} catch(Parser::exception_type &e) {
errorMessage = e.GetMsg().c_str();
return false;
}
}
// add string, double and handler to vector.
// vectors keep tracks of new attributes and let muparser use explicit variables
// it's possibile to use custom attributes in other filters
v_attrNames.push_back(name);
v_attrValue.push_back(0);
v_handlers.push_back(h);
// if succeded log stream contains number of vertices processed and time elapsed
Log( "%d vertices processed in %.2f sec.", m.cm.vn, (clock() - start) / (float) CLOCKS_PER_SEC);
return true;
}
break;
case FF_DEF_FACE_ATTRIB :
{
std::string name = par.getString("name").toStdString();
std::string expr = par.getString("expr").toStdString();
// add per-face attribute with type float and name specified by user
// add per-vertex attribute with type float and name specified by user
CMeshO::PerFaceAttributeHandle<float> h;
if(tri::HasPerFaceAttribute(m.cm,name))
{
h = tri::Allocator<CMeshO>::GetPerFaceAttribute<float>(m.cm, name);
if(!tri::Allocator<CMeshO>::IsValidHandle<float>(m.cm,h))
{
errorMessage = "attribute already exists with a different type";
return false;
}
}
else
h = tri::Allocator<CMeshO>::AddPerFaceAttribute<float> (m.cm,name);
Parser p;
setPerFaceVariables(p,m.cm);
p.SetExpr(expr);
time_t start = clock();
// every parser variables is related to face attributes.
CMeshO::FaceIterator fi;
for(fi = m.cm.face.begin(); fi != m.cm.face.end(); ++fi)if(!(*fi).IsD())
{
setAttributes(fi,m.cm);
// add new user-defined attribute
try {
h[fi] = p.Eval();
} catch(Parser::exception_type &e) {
errorMessage = e.GetMsg().c_str();
return false;
}
}
// // add string, double and handler to vector.
// // vectors keep tracks of new attributes and let muparser use explicit variables
// // it's possibile to use custom attributes in other filters
// f_attrNames.push_back(name);
// f_attrValue.push_back(0);
// fhandlers.push_back(h);
// if succeded log stream contains number of vertices processed and time elapsed
Log( "%d faces processed in %.2f sec.", m.cm.fn, (clock() - start) / (float) CLOCKS_PER_SEC);
return true;
}
break;
case FF_GRID :
{
// obtain parameters to generate 2D Grid
int w = par.getInt("numVertX");
int h = par.getInt("numVertY");
float wl = par.getFloat("absScaleX");
float hl = par.getFloat("absScaleY");
if(w <= 0 || h <= 0) {
errorMessage = "number of vertices must be positive";
return false;
}
// use Grid function to generate Grid
std::vector<float> data(w*h,0);
tri::Grid<CMeshO>(m.cm, w, h, wl, hl, &data[0]);
// if "centered on origin" is checked than move generated Grid in (0,0,0)
if(par.getBool("center"))
{
// move x and y
double halfw = double(w-1)/2;
double halfh = double(h-1)/2;
double wld = wl/double(w);
double hld = hl/float(h);
CMeshO::VertexIterator vi;
for(vi = m.cm.vert.begin(); vi != m.cm.vert.end(); ++vi)
{
(*vi).P()[0] = (*vi).P()[0] - (wld * halfw);
(*vi).P()[1] = (*vi).P()[1] - (hld * halfh);
}
}
// update bounding box, normals
Matrix44f rot; rot.SetRotateDeg(180,Point3f(0,1,0));
tri::UpdatePosition<CMeshO>::Matrix(m.cm,rot,false);
tri::UpdateNormals<CMeshO>::PerVertexNormalizedPerFace(m.cm);
tri::UpdateNormals<CMeshO>::NormalizeFace(m.cm);
tri::UpdateBounding<CMeshO>::Box(m.cm);
return true;
}
break;
case FF_ISOSURFACE :
{
SimpleVolume<SimpleVoxel> volume;
typedef vcg::tri::TrivialWalker<CMeshO, SimpleVolume<SimpleVoxel> > MyWalker;
typedef vcg::tri::MarchingCubes<CMeshO, MyWalker> MyMarchingCubes;
MyWalker walker;
Box3d rbb;
rbb.min[0]=par.getFloat("minX");
rbb.min[1]=par.getFloat("minY");
rbb.min[2]=par.getFloat("minZ");
rbb.max[0]=par.getFloat("maxX");
rbb.max[1]=par.getFloat("maxY");
rbb.max[2]=par.getFloat("maxZ");
double step=par.getFloat("voxelSize");
Point3i siz= Point3i::Construct((rbb.max-rbb.min)*(1.0/step));
Parser p;
double x,y,z;
p.DefineVar("x", &x);
p.DefineVar("y", &y);
p.DefineVar("z", &z);
std::string expr = par.getString("expr").toStdString();
p.SetExpr(expr);
Log("Filling a Volume of %i %i %i",siz[0],siz[1],siz[2]);
volume.Init(siz);
for(double i=0;i<siz[0];i++)
for(double j=0;j<siz[1];j++)
for(double k=0;k<siz[2];k++)
{
x = rbb.min[0]+step*i;
y = rbb.min[1]+step*j;
z = rbb.min[2]+step*k;
try {
volume.Val(i,j,k)=p.Eval();
} catch(Parser::exception_type &e) {
errorMessage = e.GetMsg().c_str();
return false;
}
}
// MARCHING CUBES
Log("[MARCHING CUBES] Building mesh...");
MyMarchingCubes mc(m.cm, walker);
walker.BuildMesh<MyMarchingCubes>(m.cm, volume, mc, 0);
Matrix44f tr; tr.SetIdentity(); tr.SetTranslate(rbb.min[0],rbb.min[1],rbb.min[2]);
Matrix44f sc; sc.SetIdentity(); sc.SetScale(step,step,step);
tr=tr*sc;
tri::UpdatePosition<CMeshO>::Matrix(m.cm,tr);
tri::UpdateNormals<CMeshO>::PerVertexNormalizedPerFace(m.cm);
tri::UpdateBounding<CMeshO>::Box(m.cm); // updates bounding box
return true;
}
break;
case FF_REFINE :
{
std::string condSelect = par.getString("condSelect").toStdString();
std::string expr1 = par.getString("x").toStdString();
std::string expr2 = par.getString("y").toStdString();
std::string expr3 = par.getString("z").toStdString();
bool errorMidPoint = false;
bool errorEdgePred = false;
std::string msg = "";
// check parsing errors while creating two func obj
// display error message
MidPointCustom<CMeshO> mid = MidPointCustom<CMeshO>(m.cm,expr1,expr2,expr3,errorMidPoint,msg);
CustomEdge<CMeshO> edge = CustomEdge<CMeshO>(condSelect,errorEdgePred,msg);
if(errorMidPoint || errorEdgePred)
{
errorMessage = msg.c_str();
return false;
}
// Refine current mesh.
// Only edge specified with CustomEdge pred are selected
// and the new vertex is choosen with MidPointCustom created above
RefineE<CMeshO, MidPointCustom<CMeshO>, CustomEdge<CMeshO> >
(m.cm, mid, edge, false, cb);
m.clearDataMask( MeshModel::MM_VERTMARK);
vcg::tri::UpdateNormals<CMeshO>::PerVertexNormalizedPerFace(m.cm);
return true;
}
break;
default : assert (0);
}
return false;
}