songsenand
/
cgal
mirror of https://github.com/CGAL/cgal
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

patch

This commit is contained in:
Lingjie Zhu 2017-11-19 21:08:57 +08:00
parent 12f93c4beb
commit 37b8d0fb0e
1 changed files with 42 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

85
Surface_mesh_approximation/include/CGAL/vsa_approximation.h
View File

@ -111,7 +111,7 @@ public:
// The proxy wrapper for approximation.
struct Proxy_wrapper {
Proxy_wrapper(const Proxy &_p, const face_descriptor &_s)
: px(_p), seed(_s), err(0) {}
: px(_p), seed(_s), err(0.0) {}
Proxy px; // parameterized proxy
face_descriptor seed; // proxy seed
@ -361,11 +361,11 @@ public:
max_nb_px_adjusted = *max_nb_proxies;
switch (method) {
case Random:
return init_error_random(max_nb_px_adjusted, *min_error_drop, num_iterations);
return init_random_error(max_nb_px_adjusted, *min_error_drop, num_iterations);
case Incremental:
return init_error_incremental(max_nb_px_adjusted, *min_error_drop, num_iterations);
return init_incremental_error(max_nb_px_adjusted, *min_error_drop, num_iterations);
case Hierarchical:
return init_error_hierarchical(max_nb_px_adjusted, *min_error_drop, num_iterations);
return init_hierarchical_error(max_nb_px_adjusted, *min_error_drop, num_iterations);
default:
return 0;
}
@ -388,11 +388,11 @@ public:
const FT e(0.1);
switch (method) {
case Random:
return init_error_random(nb_px, e, num_iterations);
return init_random_error(nb_px, e, num_iterations);
case Incremental:
return init_error_incremental(nb_px, e, num_iterations);
return init_incremental_error(nb_px, e, num_iterations);
case Hierarchical:
return init_error_hierarchical(nb_px, e, num_iterations);
return init_hierarchical_error(nb_px, e, num_iterations);
default:
return 0;
}
@ -456,20 +456,20 @@ public:
std::size_t avg_interval = 3) {
if (avg_interval == 0)
avg_interval = 1;
FT drop_pct(0);
FT drop_pct(0.0);
FT pre_err = compute_fitting_error();
for (std::size_t itr_count = 0; itr_count < max_iterations; itr_count += avg_interval) {
if (pre_err == FT(0))
if (pre_err == FT(0.0))
return true;
FT avg_err(0);
FT avg_err(0.0);
for (std::size_t i = 0; i < avg_interval; ++i)
avg_err += run();
avg_err /= FT(avg_interval);
drop_pct = (pre_err - avg_err) / pre_err;
// the error may fluctuates
if (drop_pct < FT(0))
if (drop_pct < FT(0.0))
drop_pct = -drop_pct;
if (drop_pct < cvg_threshold)
return true;
@ -596,14 +596,14 @@ public:
FT to_add = (residual + px_size[i]) / avg_facet;
FT floor_to_add = FT(std::floor(CGAL::to_double(to_add)));
FT q_to_add = FT(CGAL::to_double(
((to_add - floor_to_add) > FT(0.5)) ? (floor_to_add + FT(1)) : floor_to_add));
((to_add - floor_to_add) > FT(0.5)) ? (floor_to_add + FT(1.0)) : floor_to_add));
residual = (to_add - q_to_add) * avg_facet;
num_to_add[i] = static_cast<std::size_t>(CGAL::to_double(q_to_add));
}
}
else {
// residual from previous proxy in range (-0.5, 0.5] * avg_error
FT residual(0);
FT residual(0.0);
BOOST_FOREACH(const Proxy_error &pxe, px_error) {
// add error residual from previous proxy
// to_add maybe negative but greater than -0.5
@ -611,7 +611,7 @@ public:
// floor_to_add maybe negative but no less than -1
FT floor_to_add = FT(std::floor(CGAL::to_double(to_add)));
FT q_to_add = FT(CGAL::to_double(
((to_add - floor_to_add) > FT(0.5)) ? (floor_to_add + FT(1)) : floor_to_add));
((to_add - floor_to_add) > FT(0.5)) ? (floor_to_add + FT(1.0)) : floor_to_add));
residual = (to_add - q_to_add) * avg_error;
num_to_add[pxe.px] = static_cast<std::size_t>(CGAL::to_double(q_to_add));
}
@ -729,14 +729,14 @@ public:
*/
FT merge(std::size_t px0, std::size_t px1) {
if (px0 >= proxies.size() || px1 >= proxies.size() || px0 == px1)
return FT(0);
return FT(0.0);
// ensure px0 < px1
if (px0 > px1)
std::swap(px0, px1);
// merge px1 to px0
FT err_sum(0);
FT err_sum(0.0);
std::list<face_descriptor> merged_patch;
BOOST_FOREACH(face_descriptor f, faces(*m_pmesh)) {
std::size_t px_idx = fproxy_map[f];
@ -755,7 +755,7 @@ public:
--fproxy_map[f];
}
FT err_merged(0);
FT err_merged(0.0);
BOOST_FOREACH(face_descriptor f, merged_patch)
err_merged += (*fit_error)(f, proxies[px0].px);
@ -781,7 +781,7 @@ public:
// find best merge
MergedPair merged_set;
FT min_merged_error = FT(0);
FT min_merged_error = FT(0.0);
bool first_merge = true;
BOOST_FOREACH(edge_descriptor e, edges(*m_pmesh)) {
if (CGAL::is_border(e, *m_pmesh))
@ -800,7 +800,7 @@ public:
merged_patch.push_back(f);
Proxy_wrapper pxw = fit_new_proxy(merged_patch.begin(), merged_patch.end());
FT sum_error(0);
FT sum_error(0.0);
BOOST_FOREACH(face_descriptor f, merged_patch)
sum_error += (*fit_error)(f, pxw.px);
merged_set.insert(ProxyPair(pxi, pxj));
@ -821,7 +821,7 @@ public:
if (max_error < proxies[i].err)
max_error = proxies[i].err;
}
const FT merge_thre = max_error / FT(2);
const FT merge_thre = max_error / FT(2.0);
const FT increase = min_merged_error - (proxies[px_enlarged].err + proxies[px_merged].err);
if (increase > merge_thre)
return false;
@ -839,10 +839,10 @@ public:
*/
FT split(const std::size_t px, const std::size_t n = 2) {
if (px >= proxies.size())
return FT(0);
return FT(0.0);
std::size_t count = 1;
FT sum_err(0);
FT sum_err(0.0);
BOOST_FOREACH(face_descriptor f, faces(*m_pmesh)) {
if (count >= n)
break;
@ -1013,11 +1013,11 @@ private:
*/
std::size_t init_random(const std::size_t max_nb_proxies,
const std::size_t num_iterations) {
proxies.clear();
// fill a temporary vector of facets
std::vector<face_descriptor> facets;
random_shuffle_facets(facets);
proxies.clear();
// reach to the number of proxies
for (std::size_t i = 0; i < max_nb_proxies; ++i)
proxies.push_back(fit_new_proxy(facets[i]));
@ -1037,7 +1037,7 @@ private:
std::size_t init_incremental(const std::size_t max_nb_proxies,
const std::size_t num_iterations) {
// initialize a proxy and the proxy map to prepare for the insertion
init_from_first_facet();
bootstrap_from_first_facet();
add_proxies_furthest(max_nb_proxies - 1, num_iterations);
@ -1055,7 +1055,7 @@ private:
std::size_t init_hierarchical(const std::size_t max_nb_proxies,
const std::size_t num_iterations) {
// initialize a proxy and the proxy map to prepare for the insertion
init_from_first_facet();
bootstrap_from_first_facet();
while (proxies.size() < max_nb_proxies) {
// try to double current number of proxies each time
@ -1082,14 +1082,14 @@ private:
* @param num_iterations number of re-fitting iterations
* @return number of proxies initialized
*/
std::size_t init_error_random(const std::size_t max_nb_proxies,
std::size_t init_random_error(const std::size_t max_nb_proxies,
const FT min_error_drop,
const std::size_t num_iterations) {
// fill a temporary vector of facets
std::vector<face_descriptor> facets;
random_shuffle_facets(facets);
init_from_first_facet();
bootstrap_from_first_facet();
const FT initial_err = compute_fitting_error();
FT error_drop = min_error_drop * FT(2.0);
while (proxies.size() < max_nb_proxies && error_drop > min_error_drop) {
@ -1118,11 +1118,11 @@ private:
* @param num_iterations number of re-fitting iterations
* @return number of proxies initialized
*/
std::size_t init_error_incremental(const std::size_t max_nb_proxies,
std::size_t init_incremental_error(const std::size_t max_nb_proxies,
const FT min_error_drop,
const std::size_t num_iterations) {
// initialize a proxy and the proxy map to prepare for the insertion
init_from_first_facet();
bootstrap_from_first_facet();
const FT initial_err = compute_fitting_error();
FT error_drop = min_error_drop * FT(2.0);
while (proxies.size() < max_nb_proxies && error_drop > min_error_drop) {
@ -1143,11 +1143,11 @@ private:
* @param num_iterations number of re-fitting iterations
* @return number of proxies initialized
*/
std::size_t init_error_hierarchical(const std::size_t max_nb_proxies,
std::size_t init_hierarchical_error(const std::size_t max_nb_proxies,
const FT min_error_drop,
const std::size_t num_iterations) {
// initialize a proxy and the proxy map to prepare for the insertion
init_from_first_facet();
bootstrap_from_first_facet();
const FT initial_err = compute_fitting_error();
FT error_drop = min_error_drop * FT(2.0);
while (proxies.size() < max_nb_proxies && error_drop > min_error_drop) {
@ -1280,7 +1280,7 @@ private:
* Coarse approximation iteration is not performed, because it's inaccurate anyway
* and may cause serious degenerate cases(e.g. a standard cube mode).
*/
void init_from_first_facet() {
void bootstrap_from_first_facet() {
proxies.clear();
proxies.push_back(fit_new_proxy(*(faces(*m_pmesh).first)));
BOOST_FOREACH(face_descriptor f, faces(*m_pmesh))
@ -1299,7 +1299,7 @@ private:
proxies[pxidx].err += (*fit_error)(f, proxies[pxidx].px);
}
FT sum_error= FT(0.0);
FT sum_error(0.0);
BOOST_FOREACH(const Proxy_wrapper &pxw, proxies)
sum_error += pxw.err;
@ -1321,9 +1321,8 @@ private:
fit_plane_pca(px_patch.begin(), px_patch.end()) :
fit_plane_area_averaged(px_patch.begin(), px_patch.end());
FT area = FT(0.0);
Vector_3 norm = CGAL::NULL_VECTOR;
Vector_3 norm = CGAL::NULL_VECTOR;
FT area(0.0);
BOOST_FOREACH(face_descriptor f, px_patch) {
halfedge_descriptor he = halfedge(f, *m_pmesh);
const Point_3 &p0 = point_pmap[source(he, *m_pmesh)];
@ -1521,7 +1520,7 @@ private:
global_vtag_map[superv] = 0;
BOOST_FOREACH(sg_vertex_descriptor v, vpatch) {
if (is_anchor_attached(v, global_vanchor_map))
add_edge(superv, v, FT(0), gmain);
add_edge(superv, v, FT(0.0), gmain);
}
vpatch.push_back(superv);
}
@ -1561,7 +1560,7 @@ private:
walk_to_next_anchor(he, chord);
std::vector<FT> vdist;
vdist.push_back(FT(0));
vdist.push_back(FT(0.0));
BOOST_FOREACH(halfedge_descriptor h, chord) {
FT elen = global_eweight_map[edge(
to_sgv_map[source(h, *m_pmesh)],
@ -1570,7 +1569,7 @@ private:
vdist.push_back(vdist.back() + elen);
}
FT half_chord_len = vdist.back() / FT(2);
FT half_chord_len = vdist.back() / FT(2.0);
const int anchorleft = vanchor_map[source(chord.front(), *m_pmesh)];
const int anchorright = vanchor_map[target(chord.back(), *m_pmesh)];
typename std::vector<FT>::iterator ditr = vdist.begin() + 1;
@ -1778,8 +1777,8 @@ private:
px_set.insert(fproxy_map[face(h, *m_pmesh)]);
}
// construct an anchor from vertex and its incident proxies
FT avgx(0), avgy(0), avgz(0), sum_area(0); // TOFIX
// construct an anchor from vertex and the incident proxies
FT avgx(0.0), avgy(0.0), avgz(0.0), sum_area(0.0);
const Point_3 vtx_pt = point_pmap[v];
for (std::set<std::size_t>::iterator pxitr = px_set.begin();
pxitr != px_set.end(); ++pxitr) {
@ -1826,7 +1825,7 @@ private:
// area average normal and centroid
Vector_3 norm = CGAL::NULL_VECTOR;
Vector_3 cent = CGAL::NULL_VECTOR;
FT sum_area(0);
FT sum_area(0.0);
for (FacetIterator fitr = beg; fitr != end; ++fitr) {
const halfedge_descriptor he = halfedge(*fitr, *m_pmesh);
const Point_3 &p0 = point_pmap[source(he, *m_pmesh)];
@ -1843,7 +1842,7 @@ private:
}
norm = scale_functor(norm,
FT(1.0 / std::sqrt(CGAL::to_double(norm.squared_length()))));
cent = scale_functor(cent, FT(1) / sum_area);
cent = scale_functor(cent, FT(1.0) / sum_area);
return Plane_3(CGAL::ORIGIN + cent, norm);
}