102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
/* Copyright (C) 2017 Eric Wasylishen
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
See file, 'COPYING', for details.
|
|
*/
|
|
|
|
#include <common/cmdlib.hh>
|
|
#include <common/mesh.hh>
|
|
#include <common/octree.hh>
|
|
|
|
#include <map>
|
|
|
|
using namespace std;
|
|
|
|
mesh_t buildMesh(const vector<vector<glm::vec3>> &faces)
|
|
{
|
|
// FIXME: this is ugly
|
|
using pos_t = tuple<float, float, float>;
|
|
|
|
int nextVert = 0;
|
|
map<pos_t, int> posToVertIndex;
|
|
|
|
vector<vector<int>> facesWithIndices;
|
|
for (const auto &face : faces) {
|
|
vector<int> vertIndices;
|
|
|
|
for (const auto &vert : face) {
|
|
const pos_t pos = make_tuple(vert[0], vert[1], vert[2]);
|
|
const auto it = posToVertIndex.find(pos);
|
|
|
|
if (it == posToVertIndex.end()) {
|
|
posToVertIndex[pos] = nextVert;
|
|
vertIndices.push_back(nextVert);
|
|
nextVert++;
|
|
} else {
|
|
int vertIndex = it->second;
|
|
vertIndices.push_back(vertIndex);
|
|
}
|
|
}
|
|
|
|
facesWithIndices.push_back(vertIndices);
|
|
}
|
|
|
|
// convert posToVertIndex to a vector
|
|
vector<glm::vec3> vertsVec;
|
|
vertsVec.resize(posToVertIndex.size());
|
|
for (const auto &posIndex : posToVertIndex) {
|
|
const pos_t &pos = posIndex.first;
|
|
vertsVec.at(posIndex.second) = glm::vec3(std::get<0>(pos), std::get<1>(pos), std::get<2>(pos));
|
|
}
|
|
|
|
mesh_t res;
|
|
res.verts = vertsVec;
|
|
res.faces = facesWithIndices;
|
|
return res;
|
|
}
|
|
|
|
std::vector<std::vector<glm::vec3>> meshToFaces(const mesh_t &mesh)
|
|
{
|
|
std::vector<std::vector<glm::vec3>> res;
|
|
for (const auto &meshFace : mesh.faces) {
|
|
std::vector<glm::vec3> points;
|
|
for (int vertIndex : meshFace) {
|
|
const glm::vec3 point = mesh.verts.at(vertIndex);
|
|
points.push_back(point);
|
|
}
|
|
res.push_back(points);
|
|
}
|
|
Q_assert(res.size() == mesh.faces.size());
|
|
return res;
|
|
}
|
|
|
|
|
|
static aabb3f mesh_face_bbox(const mesh_t &mesh, int facenum)
|
|
{
|
|
const std::vector<int> &face = mesh.faces.at(facenum);
|
|
|
|
}
|
|
|
|
void cleanupMesh(mesh_t &mesh)
|
|
{
|
|
using facenum_t = int;
|
|
|
|
std::vector<std::pair<aabb3f, facenum_t>> faces;
|
|
|
|
octree_t<facenum_t> octree = makeOctree(faces);
|
|
|
|
}
|