int main(int argc, char** argv)
{
// Read the curve from file
std::ifstream input(argv[1]);
if (input.bad()) {
std::cerr << "File error (no file or corrupt file specified)."
<< std::endl;
return 1;
}
ObjectHeader header;
SplineSurface surface;
input >> header >> surface;
// Loop through parameter space
const int samples = 50;
double increment_u = (surface.endparam_u()
- surface.startparam_u()) / (samples-1);
double increment_v = (surface.endparam_v()
- surface.startparam_v()) / (samples-1);
Point result;
double param_u = surface.startparam_u();
int prec = (int)std::cout.precision(15);
for (int i = 0; i < samples; ++i) {
double param_v = surface.startparam_v();
for (int j = 0; j < samples; ++j) {
surface.point(result, param_u, param_v);
std::cout << result[0] << "\t" << result[1] << "\t"
<< result[2] << std::endl;
param_v += increment_v;
}
std::cout << std::endl;
param_u += increment_u;
}
std::cout.precision(prec);
return 0;
}
int main(int argc, char** argv)
{
// Read the surface from a file in Go-format.
string filename("degenerate_sf.g2");
cout << "\nProgram " << argv[0] << " using file " << filename.c_str() << endl;
ifstream file(filename.c_str());
if (!file) {
cerr << "\nFile error. Could not open file: " << filename.c_str() << endl;
return 1;
}
ObjectHeader head;
SplineSurface surf;
file >> head;
if (!head.classType() == SplineSurface::classType()) {
THROW("Object type is NOT SplineSurface.");
}
file >> surf;
file.close();
// Read the points from a file. xyz-coordinates.
string point_filename("inp_degen_surf_close_points.dat");
ifstream pfile(point_filename.c_str());
if (!pfile) {
cerr << "\nFile error. Could not open file: " << point_filename.c_str() << endl;
return 1;
}
vector<Point> points;
while (1) {
Point p(3);
pfile >> p;
if (!pfile) break;
points.push_back(p);
}
pfile.close();
int N = (int)points.size();
cout << "\nProgram '" << argv[0] << "' using input files '" << filename.c_str()
<< "' and '" << point_filename.c_str()
<< ", and output file 'degen_surf_close_points.g2'." << endl;
// Find the points on the surface closest to these points.
double close_u; // Closest point's u parameter.
double close_v; // Closest point's v parameter.
Point close_pt(3); // Closest point's coordinates.
double close_dist; // Distance between the two points.
double epsilon = 1e-8; // Parameter tolerance
// Write to file vectors from a point to the closest point on the surface.
ofstream fout2("degenerate_sf_close_points.g2");
// Class_LineCloud=410 MAJOR_VERSION=1 MINOR_VERSION=1 auxillary data=4
// The four auxillary data values defines the colour (r g b alpha)
fout2 << "410 1 0 4 255 0 0 255" << endl; // Header.
fout2 << N << endl;
// Find closest point using the whole surface. (The two last arguments
// 'RectDomain* domain_of_interest' and 'double *seed' are by default
// equal to 0).
cout << "\nClosest points from inputfile points to points on the surface ";
for (int i=0; i<N; ++i) {
surf.closestPoint(points[i], close_u, close_v, close_pt, close_dist,
epsilon);
fout2 << points[i] << ' ' << close_pt << endl; // write vector
cout << "Point: " << points[i] << " Closest point: " << close_pt
<< "\nParameter values= " << close_u << " , " << close_v
<< " Closest distance= " << close_dist << endl;
}
fout2.close();
// Find closest point from points on the surface. Should be 0 + some tolerance.
cout << "\nClosest points from points on the surface." << endl;
const int nsp = 9;
double du = (surf.endparam_u() - surf.startparam_u()) / (nsp-1);
double dv = (surf.endparam_v() - surf.startparam_v()) / (nsp-1);
cout << "Parameter u from " << surf.startparam_u() << " to " << surf.endparam_u()
<< " step " << du << endl;
cout << "Parameter v from " << surf.startparam_v() << " to " << surf.endparam_v()
<< " step " << dv << endl;
double max_dist = 0.0;
Point point;
for (double v=surf.startparam_v(); v<=surf.endparam_v(); v += dv) {
for (double u=surf.startparam_u(); u<=surf.endparam_u(); u += du) {
surf.point(point, u, v); // interpolate at u,v
surf.closestPoint(point, close_u, close_v, close_pt, close_dist,
epsilon);
#ifdef DEBUG
cout << "\n Point: " << point << "\nClosest point: " << close_pt
<< "\nParameter values= " << close_u << " , " << close_v
<< " Closest distance= " << close_dist << endl;
#endif
}
max_dist = std::max(close_dist, max_dist);
}
cout << "\nMaximum distance between an interpolated point and the "
<< "corresponding input point is " << max_dist << '\n' << endl;
}
shared_ptr<SplineSurface>
GeometryTools::surfaceSum(const SplineSurface& sf1, double fac1,
const SplineSurface& sf2, double fac2, double num_tol)
//********************************************************************
// Addition of two signed SplineSurfaces, i.e. this function can
// also be used for subtraction. The surfaces is assumed to live on
// the same parameter domain, but may have different knot vectors.
//********************************************************************
{
// Check input
ALWAYS_ERROR_IF(fabs(sf1.startparam_u() - sf2.startparam_u()) > num_tol ||
fabs(sf1.endparam_u() - sf2.endparam_u()) > num_tol ||
fabs(sf1.startparam_v() - sf2.startparam_v()) > num_tol ||
fabs(sf1.endparam_v() - sf2.endparam_v()) > num_tol,
"Inconsistent parameter domain.");
// For the time being
if (sf1.rational() || sf2.rational()) {
THROW("Sum of rational surfaces is not implemented");
}
// Make copy of surfaces
vector<shared_ptr<SplineSurface> > surfaces;
surfaces.reserve(2);
shared_ptr<SplineSurface> sf;
// #ifdef _MSC_VER
// sf = shared_ptr<SplineSurface>(dynamic_cast<SplineSurface*>(sf1.clone()));
// #else
sf = shared_ptr<SplineSurface>(sf1.clone());
// #endif
surfaces.push_back(sf);
// #ifdef _MSC_VER
// sf = shared_ptr<SplineSurface>(dynamic_cast<SplineSurface*>(sf2.clone()));
// #else
sf = shared_ptr<SplineSurface>(sf2.clone());
// #endif
surfaces.push_back(sf);
// Make sure that the surfaces live on the same knot vector
GeometryTools::unifySurfaceSplineSpace(surfaces, num_tol);
// Add signed coefficients
vector<double> coefs;
int nmb_coefs_u = surfaces[0]->numCoefs_u();
int nmb_coefs_v = surfaces[0]->numCoefs_v();
int dim = surfaces[0]->dimension();
coefs.resize(dim*nmb_coefs_u*nmb_coefs_v);
int ki;
std::vector<double>::iterator s1 = surfaces[0]->coefs_begin();
std::vector<double>::iterator s2 = surfaces[1]->coefs_begin();
for (ki=0; ki<dim*nmb_coefs_u*nmb_coefs_v; ki++)
coefs[ki] = fac1*s1[ki] + fac2*s2[ki];
// Create output curve
shared_ptr<SplineSurface>
surfacesum(new SplineSurface(nmb_coefs_u, nmb_coefs_v,
surfaces[0]->order_u(),
surfaces[0]->order_v(),
surfaces[0]->basis_u().begin(),
surfaces[0]->basis_v().begin(),
&coefs[0], dim, false));
return surfacesum;
}
//===========================================================================
shared_ptr<SplineSurface>
SurfaceCreators::mult1DBezierPatches(const SplineSurface& patch1,
const SplineSurface& patch2)
//===========================================================================
{
// @@sbr This should be fixed shortly. Nothing more than separating the
// spatial and rational components.
ASSERT(!patch1.rational() && !patch2.rational());
// We should of course also check the actual knots, but why bother (trusting the user).
// ASSERT(basis1_u.numCoefs() == basis2_u.numCoefs() &&
// basis1_v.numCoefs() == basis2_v.numCoefs() &&
// basis1_u.order() == basis2_u.order() &&
// basis1_v.order() == basis2_v.order());
ASSERT((patch1.dimension() == 1) && (patch2.dimension() == 1));
// @@sbr Suppose we could allow for differing orders (but equal parameter domain).
// Ported from SISL routine s6multsfs().
int order = max(2*(patch1.order_u() - 1) + 1, 2*(patch1.order_v() - 1) + 1);;
vector<double> pascal((order+1)*(order+2)/2, 0.0); // Binomial coefficients (Pascal's triangle)
int ki, kj;
vector<double>::iterator psl1; /* Pointer used in Pascals triangle */
vector<double>::iterator psl2; /* Pointer used in Pascals triangle */
for(ki = 0, psl2 = pascal.begin(); ki <= order ; ki++, psl1 = psl2, psl2 += ki) {
psl2[0] = 1.0;
for(kj = 1; kj < ki; kj++)
psl2[kj] = psl1[kj-1] + psl1[kj];
psl2[ki] = 1.0;
}
int order11 = patch1.order_u();
int order12 = patch1.order_v();
int order21 = patch2.order_u();
int order22 = patch2.order_v();
vector<double>::const_iterator c1 = patch1.coefs_begin();
vector<double>::const_iterator c2 = patch2.coefs_begin();
// vector<double> mult_coefs(patch1.numCoefs_u()*patch1.numCoefs_v()*patch1.dimension(), 0.0);
int p1,p2,r1,r2;
int kgrad11 = order11-1;
int kgrad12 = order12-1;
int kgrad21 = order21-1;
int kgrad22 = order22-1;
int kgrad1 = kgrad11 + kgrad21; // Degree of mult basis functions in 1st dir.
int kgrad2 = kgrad12 + kgrad22;
int kstop2 = order12+order22-1;
int kstop1 = order11+order21-1;
vector<double> mult_coefs(kstop1*kstop2, 0.0);
vector<double>::const_iterator psl_kgrad11 = pascal.begin()+kgrad11*(kgrad11+1)/2;
vector<double>::const_iterator psl_kgrad12 = pascal.begin()+kgrad12*(kgrad12+1)/2;
vector<double>::const_iterator psl_kgrad21 = pascal.begin()+kgrad21*(kgrad21+1)/2;
vector<double>::const_iterator psl_kgrad22 = pascal.begin()+kgrad22*(kgrad22+1)/2;
vector<double>::const_iterator psl_kgrad1 = pascal.begin()+kgrad1 *(kgrad1 +1)/2;
vector<double>::const_iterator psl_kgrad2 = pascal.begin()+kgrad2 *(kgrad2 +1)/2;
vector<double>::const_iterator qsc1, qsc2;
double tsum, sumi;
vector<double>::iterator temp = mult_coefs.begin();
double tdiv, t2;
int kstop3, kstop4;
for (p2 = 0; p2 < kstop2; ++p2)
for (p1 = 0; p1 <kstop1; p1++, temp++) {
tdiv = psl_kgrad1[p1]*psl_kgrad2[p2];
kstop4 = min(p2,kgrad12);
for (r2 = max(0,p2-kgrad22),tsum = 0.0; r2 <= kstop4; r2++) {
t2 = psl_kgrad12[r2]*psl_kgrad22[p2-r2];
kstop3 = min(p1,kgrad11);
for (r1 = max(0,p1-kgrad21),sumi = 0.0,
qsc1 = c1+r2*order11,qsc2 = c2+(p2-r2)*order21;
r1 <= kstop3; r1++)
sumi += psl_kgrad11[r1]*psl_kgrad21[p1-r1]*qsc1[r1]*qsc2[p1-r1];
tsum += t2*sumi;
}
tsum /= tdiv;
*temp = tsum;
}
// *order_newsurf1 = kstop1;
// *order_newsurf2 = kstop2;
// We must add knots to input basises according to new order.
vector<double> new_knots_u, new_knots_v;
new_knots_u.insert(new_knots_u.begin(), kstop1, patch1.startparam_u());
new_knots_u.insert(new_knots_u.end(), kstop1, patch1.endparam_u());
new_knots_v.insert(new_knots_v.begin(), kstop2, patch1.startparam_v());
new_knots_v.insert(new_knots_v.end(), kstop2, patch1.endparam_v());
// Finally we create the spline sf with the multiplied coefs.
shared_ptr<SplineSurface> mult_sf(new SplineSurface(kstop1, kstop2, kstop1, kstop2,
new_knots_u.begin(), new_knots_v.begin(),
mult_coefs.begin(), patch1.dimension(),
patch1.rational()));
// SplineSurface* mult_sf = new SplineSurface(patch1.numCoefs_u(), patch1.numCoefs_v(),
// patch1.order_u(), patch1.order_v(),
// patch1.basis_u().begin(), patch1.basis_v().begin(),
// mult_coefs.begin(), patch1.dimension(),
// patch1.rational());
return mult_sf;
}
int main(int argc, char** argv)
{
if (argc != 4) {
cout << "Usage: " << argv[0] << " FileSf FileCv aepsge" << endl;
return 0;
}
ObjectHeader header;
// Read the first curve from file
ifstream input1(argv[1]);
if (input1.bad()) {
cerr << "File #1 error (no file or corrupt file specified)."
<< std::endl;
return 1;
}
header.read(input1);
SplineSurface surf;
surf.read(input1);
input1.close();
// Read the second curve from file
ifstream input2(argv[2]);
if (input2.bad()) {
cerr << "File #2 error (no file or corrupt file specified)."
<< std::endl;
return 1;
}
header.read(input2);
SplineCurve curve;
curve.read(input2);
input2.close();
double aepsge;
aepsge = atof(argv[3]);
// Set up and run the intersection algorithm
SISLCurve* pcurve = Curve2SISL(curve);
SISLSurf* psurf = GoSurf2SISL(surf);
double astart1 = curve.startparam();
double estart2[] = { surf.startparam_u(), surf.startparam_v() };
double aend1 = curve.endparam();
double eend2[] = { surf.endparam_u(), surf.endparam_v() };
cout << "astart1 = " << astart1 << endl
<< "estart2[] = { " << estart2[0] << ", "
<< estart2[1] << " }" << endl
<< "aend1 = " << aend1 << endl
<< "eend2[] = { " << eend2[0] << ", "
<< eend2[1] << " }" << endl;
double anext1 = astart1;
double enext2[] = { estart2[0], estart2[1] };
// double anext1 = 0.0;
// double enext2[] = { 2.0, 0.0 };
cout << "anext1 = " << anext1 << endl
<< "enext2[] = { " << enext2[0] << ", "
<< enext2[1] << " }" << endl;
double cpos1;
double gpos2[2];
int jstat = 0;
cout << "jstat = " << jstat << endl;
s1772(pcurve, psurf, aepsge, astart1, estart2, aend1, eend2,
anext1, enext2, &cpos1, gpos2, &jstat);
// Write the results
cout << "Results s1772:" << endl
<< "jstat = " << jstat << endl
<< "cpos1 = " << cpos1 << endl
<< "gpos2[] = { " << gpos2[0] << ", "
<< gpos2[1] << " }" << endl;
return 0;
}