void ViewSphereRender::initializeGL()
{
QGLCanvas::initializeGL();
//在球面上绘制视点移动轨迹时需要，防止轨迹与球面重合出现z-fighting的情况
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset(1, 1);
// Generate view position
long npix = nside2npix(m_nside);
double theta,phi;
for(int i = 0; i < npix; ++i) {
pix2ang_ring(m_nside, i, &theta, &phi);
ViewPoint pos(theta, phi, 0.0);
ang2vec(theta, phi, pos.coord);
m_viewSphere.vViewPos.push_back(pos);
}
printf("View position count = %d\n", m_viewSphere.vViewPos.size());
int array[8];
//生成顶点之间的link
for(int i = 0; i < npix; i++)
{
neighbors(m_nside, i, array, 0);
for(int j = 0; j < 8; j += 2) {
if(array[j] > i)
m_viewSphere.links.push_back(make_pair(i, array[j]));
}
}
// Generate mesh from vertices
// 生成球面模型
vector<ViewPoint>& vp = m_viewSphere.vViewPos;
m_viewSphere.vTris.push_back(Vector3i(0, 1, 2)); // 北极点的两个三角形
m_viewSphere.vTris.push_back(Vector3i(0, 2, 3));
m_viewSphere.vTris.push_back(Vector3i(npix - 1, npix - 2, npix - 3)); // 南极点的两个三角形
m_viewSphere.vTris.push_back(Vector3i(npix - 1, npix - 3, npix - 4));
for(int i = 0; i < npix; i++)
{
neighbors(m_nside, i, array, 0);
if (array[4] >= 0 && array[5] >= 0 && array[6] >= 0)
{
m_viewSphere.vTris.push_back(Vector3i(i, array[6], array[5]));
m_viewSphere.vTris.push_back(Vector3i(i, array[5], array[4]));
} else {
m_viewSphere.vTris.push_back(Vector3i(i, array[6], array[4]));
}
}
// m_currentPos = &(m_viewSphere.vViewPos[0]);
//
// long ipix;
// Vector4d p0(1.0, 0.5, 0.0, 1.0);
// vec2pix_ring(m_nside, (double*)&p0, &ipix);
// moveFromTo(m_currentPos, &(m_viewSphere.vViewPos[ipix]));
}
int main(void) {
double theta, phi;
double vec[3];
long nside;
long ipix, npix, dpix, ip2, ip1;
printf("Starting C Healpix pixel routines test\n");
nside = 1024;
dpix = 23;
/* Find the number of pixels in the full map */
npix = nside2npix(nside);
printf("Number of pixels in full map: %ld\n", npix);
printf("dpix: %ld\n", dpix);
printf("Nest -> ang -> vec -> ang -> Ring -> Nest\n");
for (ipix = 0; ipix < npix; ipix +=dpix) {
pix2ang_nest(nside, ipix, &theta, &phi);
ang2vec(theta, phi, vec);
vec2ang(vec, &theta, &phi);
ang2pix_ring(nside, theta, phi, &ip2);
ring2nest(nside,ip2,&ip1);
if (ip1 != ipix) {printf("Error: %ld %ld %ld %ld\n",nside,ipix,ip2,ip1);}
}
printf("Ring -> ang -> Nest -> Ring\n");
for (ipix = 0; ipix < npix; ipix +=dpix) {
pix2ang_ring(nside, ipix, &theta, &phi);
ang2pix_nest(nside, theta, phi, &ip2);
nest2ring(nside,ip2,&ip1);
if (ip1 != ipix) {printf("Error: %ld %ld %ld %ld\n",nside,ipix,ip2,ip1);}
}
printf("Nest -> vec -> Ring -> Nest\n");
for (ipix = 0; ipix < npix; ipix +=dpix) {
pix2vec_nest(nside, ipix, vec);
vec2pix_ring(nside, vec, &ip2);
ring2nest(nside,ip2,&ip1);
if (ip1 != ipix) {printf("Error: %ld %ld %ld %ld\n",nside,ipix,ip2,ip1);}
}
printf("Ring -> vec -> Nest -> Ring\n");
for (ipix = 0; ipix < npix; ipix +=dpix) {
pix2vec_ring(nside, ipix, vec);
vec2pix_nest(nside, vec, &ip2);
nest2ring(nside,ip2,&ip1);
if (ip1 != ipix) {printf("Error: %ld %ld %ld %ld\n",nside,ipix,ip2,ip1);}
}
printf("%ld\n", nside);
printf("test completed\n\n");
/* Later */
return 0;
}
int main(void) {
double theta, phi, th1, ph1;
long nside;
long ipix, npix, dpix, ip2, ip1, ns1, pp;
double vec[3];
nside = 1024;
dpix = 1;
/* test nside->npix->nside */
/*
for (pp = 0; pp < 14; pp++) {
nside = pow(2,pp) ;
npix = nside2npix(nside);
ns1 = npix2nside(npix);
printf("%ld %ld %ld %ld\n",pp,nside,ns1,npix);
}
*/
theta = 0.5;
phi = -0.4;
ang2vec(theta, phi, vec);
vec2ang(vec, &th1, &ph1);
printf("%f %f, %f %f\n",theta,th1,phi,ph1);
theta = -0.1;
/* theta = 5.; */
/* ang2vec(theta, phi, vec); */
/* printf("%f %f %f\n",vec[0],vec[1],vec[2]); */
/* printf("dpix: %ld\n", dpix); */
/* for (ipix = 0; ipix < npix; ipix +=dpix) { */
/* pix2ang_nest(nside, ipix, &theta, &phi); */
/* ang2pix_ring(nside, theta, phi, &ip2); */
/* ring2nest(nside,ip2,&ip1); */
/* if (ip1 != ipix) {printf("%ld %ld %ld %ld\n",nside,ipix,ip2,ip1);} */
/* } */
/* for (ipix = 0; ipix < npix; ipix +=dpix) { */
/* pix2ang_ring(nside, ipix, &theta, &phi); */
/* ang2pix_nest(nside, theta, phi, &ip2); */
/* nest2ring(nside,ip2,&ip1); */
/* if (ip1 != ipix) {printf("%ld %ld %ld %ld\n",nside,ipix,ip2,ip1);} */
/* } */
/* printf("%ld\n", nside); */
/* Later */
return 0;
}
vfloat ang2projvec(const vec& r1, const vec& r2, const vec& normal) {
pvecerror(
"vfloat ang2projvec(const vec& r1, const vec& r2, const vec& normal)");
vec rt1 = project_to_plane(r1, normal);
vec rt2 = project_to_plane(r2, normal);
if (rt1 == dv0 || rt2 == dv0) {
vecerror = 1; return 0;
}
vfloat tang = ang2vec(rt1, rt2);
if (tang == 0) return tang; // projections are parallel
vec at = rt1 || rt2;
int i = check_par(at, normal, 0.0001);
//mcout<<"r1="<<r1<<"r2="<<r2<<"normal="<<normal
// <<"rt1="<<rt1<<"rt2="<<rt2<<"\ntang="<<tang
// <<"\nat="<<at<<" i="<<i<<'\n';
if (i == -1) return 2.0 * M_PI - tang;
return tang; // it works if angle <= PI
}
int main()
{
std::cout << "****** ang2vec ******" << std::endl;
double theta = PI / 2;
double phi = PI / 2;
double vec[3];
ang2vec(theta, phi, vec);
displayVec(vec);
std::cout << "****** npix2nisde ******" << std::endl;
long npix = 786432;
std::cout << npix2nside(npix) << std::endl;
std::cout << "****** nside2npix ******" << std::endl;
long nside = 256;
std::cout << nside2npix(nside) << std::endl;
std::cout << "****** pix2ang ******" << std::endl;
long ipring = 10000; // ipring -> Index_Pixel_Ring
pix2ang_ring(nside, ipring, &theta, &phi);
std::cout << "theta = " << theta << std::endl;
std::cout << "phi = " << phi << std::endl;
std::cout << "****** pix2vec ******" << std::endl;
pix2vec_ring(nside, ipring, vec);
displayVec(vec);
std::cout << "****** ang2pix ******" << std::endl;
ang2pix_ring(nside, theta, phi, &ipring);
std::cout << "ipring = " << ipring << std::endl;
std::cout << "****** vec2pix ******" << std::endl;
vec2pix_ring(nside, vec, &ipring);
std::cout << "ipring = " << ipring << std::endl;
std::cout << "****** ring2nest ******" << std::endl;
long ipnest;
ring2nest(nside, ipring, &ipnest);
std::cout << "ipnest = " << ipnest << std::endl;
std::cout << "****** nest2ring ******" << std::endl;
nest2ring(nside, ipnest, &ipring);
std::cout << "ipring = " << ipring << std::endl;
}
/* Find error in time of arrival. */
static void toa_errors(
double *dt,
double theta,
double phi,
double gmst,
int nifos,
const double **locs, /* Input: detector position. */
const double *toas /* Input: time of arrival. */
) {
/* Convert to Cartesian coordinates. */
double n[3];
ang2vec(theta, phi - gmst, n);
int i, j;
for (i = 0; i < nifos; i ++)
{
double dot;
for (dot = 0, j = 0; j < 3; j ++)
{
dot += locs[i][j] * n[j];
}
dt[i] = toas[i] + dot / LAL_C_SI;
}
}
