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#include "TriangleMesh.hpp"
namespace Slic3r {
TriangleMesh::TriangleMesh() {}
TriangleMesh::~TriangleMesh() {
stl_close(&stl);
}
void
TriangleMesh::ReadSTLFile(char* input_file) {
stl_open(&stl, input_file);
}
void TriangleMesh::ReadFromPerl(SV* vertices, SV* facets)
{
stl_initialize(&stl);
stl.stats.type = inmemory;
// count facets and allocate memory
AV* facets_av = (AV*)SvRV(facets);
stl.stats.number_of_facets = av_len(facets_av)+1;
stl.stats.original_num_facets = stl.stats.number_of_facets;
stl_allocate(&stl);
// read geometry
AV* vertices_av = (AV*)SvRV(vertices);
for (unsigned int i = 0; i < stl.stats.number_of_facets; i++) {
AV* facet_av = (AV*)SvRV(*av_fetch(facets_av, i, 0));
stl_facet facet;
facet.normal.x = 0;
facet.normal.y = 0;
facet.normal.z = 0;
for (unsigned int v = 0; v <= 2; v++) {
AV* vertex_av = (AV*)SvRV(*av_fetch(vertices_av, SvIV(*av_fetch(facet_av, v, 0)), 0));
facet.vertex[v].x = SvNV(*av_fetch(vertex_av, 0, 0));
facet.vertex[v].y = SvNV(*av_fetch(vertex_av, 1, 0));
facet.vertex[v].z = SvNV(*av_fetch(vertex_av, 2, 0));
}
facet.extra[0] = 0;
facet.extra[1] = 0;
stl.facet_start[i] = facet;
}
}
void
TriangleMesh::Repair() {
int i;
// checking exact
stl_check_facets_exact(&stl);
stl.stats.facets_w_1_bad_edge = (stl.stats.connected_facets_2_edge - stl.stats.connected_facets_3_edge);
stl.stats.facets_w_2_bad_edge = (stl.stats.connected_facets_1_edge - stl.stats.connected_facets_2_edge);
stl.stats.facets_w_3_bad_edge = (stl.stats.number_of_facets - stl.stats.connected_facets_1_edge);
// checking nearby
int last_edges_fixed = 0;
float tolerance = stl.stats.shortest_edge;
float increment = stl.stats.bounding_diameter / 10000.0;
int iterations = 2;
if (stl.stats.connected_facets_3_edge < stl.stats.number_of_facets) {
for (i = 0; i < iterations; i++) {
if (stl.stats.connected_facets_3_edge < stl.stats.number_of_facets) {
//printf("Checking nearby. Tolerance= %f Iteration=%d of %d...", tolerance, i + 1, iterations);
stl_check_facets_nearby(&stl, tolerance);
//printf(" Fixed %d edges.\n", stl.stats.edges_fixed - last_edges_fixed);
last_edges_fixed = stl.stats.edges_fixed;
tolerance += increment;
} else {
break;
}
}
}
// remove_unconnected
if (stl.stats.connected_facets_3_edge < stl.stats.number_of_facets) {
stl_remove_unconnected_facets(&stl);
}
// fill_holes
if (stl.stats.connected_facets_3_edge < stl.stats.number_of_facets) {
stl_fill_holes(&stl);
}
// normal_directions
stl_fix_normal_directions(&stl);
// normal_values
stl_fix_normal_values(&stl);
// always calculate the volume and reverse all normals if volume is negative
stl_calculate_volume(&stl);
// neighbors
stl_verify_neighbors(&stl);
}
void
TriangleMesh::WriteOBJFile(char* output_file) {
stl_generate_shared_vertices(&stl);
stl_write_obj(&stl, output_file);
}
AV*
TriangleMesh::ToPerl() {
int i;
stl_generate_shared_vertices(&stl);
// vertices
AV* vertices = newAV();
av_extend(vertices, stl.stats.shared_vertices);
for (i = 0; i < stl.stats.shared_vertices; i++) {
AV* vertex = newAV();
av_store(vertices, i, newRV_noinc((SV*)vertex));
av_extend(vertex, 2);
av_store(vertex, 0, newSVnv(stl.v_shared[i].x));
av_store(vertex, 1, newSVnv(stl.v_shared[i].y));
av_store(vertex, 2, newSVnv(stl.v_shared[i].z));
}
// facets
AV* facets = newAV();
av_extend(facets, stl.stats.number_of_facets);
for (i = 0; i < stl.stats.number_of_facets; i++) {
AV* facet = newAV();
av_store(facets, i, newRV_noinc((SV*)facet));
av_extend(facet, 2);
av_store(facet, 0, newSVnv(stl.v_indices[i].vertex[0]));
av_store(facet, 1, newSVnv(stl.v_indices[i].vertex[1]));
av_store(facet, 2, newSVnv(stl.v_indices[i].vertex[2]));
}
AV* result = newAV();
av_extend(result, 1);
av_store(result, 0, newRV_noinc((SV*)vertices));
av_store(result, 1, newRV_noinc((SV*)facets));
return result;
}
}
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