main(int argc, char *argv[]) {
if (argc != 2) fatal("usage: cgraph type");
string s;
if (strcmp(argv[1],"graph") == 0) {
Graph g; g.read(cin); Graph g1(1,1);
g1.copyFrom(g); cout << g1.toString(s);
} else if (strcmp(argv[1],"wgraph") == 0) {
Wgraph wg; wg.read(cin); Wgraph wg1(1,1);
wg1.copyFrom(wg); cout << wg1.toString(s);
} else if (strcmp(argv[1],"digraph") == 0) {
Digraph dig; dig.read(cin); Digraph dig1(1,1);
dig1.copyFrom(dig); cout << dig1.toString(s);
} else if (strcmp(argv[1],"wdigraph") == 0) {
Wdigraph wdig; wdig.read(cin); Wdigraph wdig1(1,1);
wdig1.copyFrom(wdig); cout << wdig1.toString(s);
} else if (strcmp(argv[1],"flograph") == 0) {
Flograph fg; fg.read(cin); Flograph fg1(2,1);
fg1.copyFrom(fg); cout << fg1.toString(s);
} else if (strcmp(argv[1],"wflograph") == 0) {
Wflograph wfg; wfg.read(cin); Wflograph wfg1(2,1);
wfg1.copyFrom(wfg); cout << wfg1.toString(s);
} else {
fatal("usage: cgraph type");
}
}
void dynamics_mul::compute_intensity_force(){
HMesh::HalfEdgeAttributeVector<int> touched(s_dsc->get_no_halfedges(), 0);
for (auto eit = s_dsc->halfedges_begin(); eit != s_dsc->halfedges_end(); eit++) {
if(s_dsc->is_interface(*eit) and !touched[*eit]){
auto hew = s_dsc->walker(*eit);
double c0 = mean_inten_[s_dsc->get_label(hew.face())];
double c1 = mean_inten_[s_dsc->get_label(hew.opp().face())];
// Loop on the edge
auto p0 = s_dsc->get_pos(hew.opp().vertex());
auto p1 = s_dsc->get_pos(hew.vertex());
Vec2 L01 = p1 - p0;
L01.normalize();
Vec2 N01(L01[1], -L01[0]); // Outward pointing normal
int length = (int)(p1 - p0).length();
double f0 = 0.0, f1 = 0.0;
Vec2 fg0(0.0), fg1(0.0);
for (int i = 0; i <= length; i++) {
auto p = p0 + (p1 - p0)*(double(i)/(double)length);
double I = s_img->get_intensity(p[0], p[1]);
// Normalize force
int normalizedF = 1;
double f ;
switch (normalizedF) {
case 1:
f = ( (c0-c1)*(2*I - c0 - c1)) / ((c0-c1)*(c0-c1));
break;
case 2:
f = ( (c0-c1)*(2*I - c0 - c1)) / std::abs((c0 - c1));
break;
case 3:
f = (c0-c1)*(2*I - c0 - c1);
break;
default:
f = 0.0;
break;
}
Vec2 fu = N01*(c0-c1)*(2*I - c0 - c1);
// Image gradient force
int lengthM = 10;
Vec2 gm(0.0); double max_grad = 0;
for (int l = 0; l < lengthM; l++) {
Vec2 curPt = p + fu*(l/(double)(lengthM));
Vec2 gg = s_img->grad((int)curPt[0], (int)curPt[1]);
if (max_grad < gg.length()) {
max_grad = gg.length();
gm = gg*(lengthM - l)/(double)lengthM;
}
}
Vec2 fg = gm*(2*I - c0 - c1);
Vec2 fv = (fu + fg)/((c0-c1)*(c0-c1));
fg0 += fv*(p-p1).length() / (double)length;
fg1 += fv*(p-p0).length() / (double)length;
// Barry Centric coordinate
f0 += f*(p-p1).length() / (double)length;
f1 += f*(p-p0).length() / (double)length;
// Image gradient force
// Vec2 fg = s_img->grad((int)p[0], (int)p[1]) * (2*I - c0 - c1) / ((c0-c1)*(c0-c1));
// fg0 += fg*(p-p1).length() / (double)length;
// fg1 += fg*(p-p0).length() / (double)length;
}
// Set force
Vec2 f_x0 = fg0; // N01*f0;
Vec2 f_x1 = fg1; // N01*f1;
s_dsc->add_node_external_force(hew.opp().vertex(), f_x0*g_param.beta);
s_dsc->add_node_external_force(hew.vertex(), f_x1*g_param.beta);
// Avoid retouch the edge
touched[*eit] = 1;
touched[hew.opp().halfedge()] = 1;
}
}
}
