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61 lines
2.3 KiB
61 lines
2.3 KiB
3 years ago
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/**
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* ------------------------------------
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* @author: Weipeng Kong
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* @date: 2022/2/23
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* @email: yjxkwp\@foxmail.com
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* @description:
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* ------------------------------------
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**/
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#include "Octree/voxel/SurfaceVoxelBuilder.h"
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#include "Octree/voxel/Voxel.h"
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#include <queue>
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Octree::SurfaceVoxelBuilder::SurfaceVoxelBuilder(BaseOctree &octree,
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const pMesh::Triangle3dMesh<> &mesh,
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double block_size) :
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block_size(block_size), octree(octree), mesh(mesh) {
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aabb = AABB::ToIntegerSizeAABB(octree.aabb(), block_size, _x, _y, _z);
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}
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void Octree::SurfaceVoxelBuilder::build(Octree::Voxel &voxel) {
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voxel._x = _x;
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voxel._y = _y;
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voxel._z = _z;
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voxel.aabb = aabb;
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voxel.voxels.clear();
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voxel.voxels = std::vector<bool>(_x * _y * _z, false);
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BOOST_LOG_TRIVIAL(debug) << "Voxel size: " << _x << " " << _y << " " << _z;
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for (int i = 0; i < _x; ++i) {
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double base_x = this->aabb.min().x() + i * block_size;
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for (int j = 0; j < _y; ++j) {
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double base_y = this->aabb.min().y() + j * block_size;
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for (int k = 0; k < _z; ++k) {
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double base_z = this->aabb.min().z() + k * block_size;
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AABB vox({base_x, base_y, base_z}, {base_x + block_size, base_y + block_size, base_z + block_size});
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auto candidates_vox = octree.map_voxel(vox);
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bool exit_flag = false;
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for (auto candidate : candidates_vox) {
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for (uint32_t tid : candidate->tri_ids) {
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const pMesh::Triangle3dMesh<>::Face &face = mesh.faces[tid].attr;
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if (vox.intersect_triangle(mesh.vertices[face.vertices[0].id()].attr.coordinate,
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mesh.vertices[face.vertices[1].id()].attr.coordinate,
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mesh.vertices[face.vertices[2].id()].attr.coordinate)) {
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voxel.voxels[voxel.id_at(i, j, k)] = true;
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exit_flag = true;
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break;
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}
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}
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if(exit_flag) {
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break;
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}
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}
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}
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}
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}
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}
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