104 lines
3.6 KiB
C++
104 lines
3.6 KiB
C++
/*************************************************************************/
|
|
/* quick_hull.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://godotengine.org */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
|
|
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* */
|
|
/* Permission is hereby granted, free of charge, to any person obtaining */
|
|
/* a copy of this software and associated documentation files (the */
|
|
/* "Software"), to deal in the Software without restriction, including */
|
|
/* without limitation the rights to use, copy, modify, merge, publish, */
|
|
/* distribute, sublicense, and/or sell copies of the Software, and to */
|
|
/* permit persons to whom the Software is furnished to do so, subject to */
|
|
/* the following conditions: */
|
|
/* */
|
|
/* The above copyright notice and this permission notice shall be */
|
|
/* included in all copies or substantial portions of the Software. */
|
|
/* */
|
|
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
|
|
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
|
|
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
|
|
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
|
|
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
|
|
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
|
|
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
/*************************************************************************/
|
|
|
|
#ifndef QUICK_HULL_H
|
|
#define QUICK_HULL_H
|
|
|
|
#include "core/list.h"
|
|
#include "core/math/aabb.h"
|
|
#include "core/math/geometry.h"
|
|
#include "core/set.h"
|
|
|
|
class QuickHull {
|
|
public:
|
|
struct Edge {
|
|
union {
|
|
uint32_t vertices[2];
|
|
uint64_t id;
|
|
};
|
|
|
|
bool operator<(const Edge &p_edge) const {
|
|
return id < p_edge.id;
|
|
}
|
|
|
|
Edge(int p_vtx_a = 0, int p_vtx_b = 0) {
|
|
if (p_vtx_a > p_vtx_b) {
|
|
SWAP(p_vtx_a, p_vtx_b);
|
|
}
|
|
|
|
vertices[0] = p_vtx_a;
|
|
vertices[1] = p_vtx_b;
|
|
}
|
|
};
|
|
|
|
struct Face {
|
|
Plane plane;
|
|
uint32_t vertices[3];
|
|
Vector<int> points_over;
|
|
|
|
bool operator<(const Face &p_face) const {
|
|
return points_over.size() < p_face.points_over.size();
|
|
}
|
|
};
|
|
|
|
private:
|
|
struct FaceConnect {
|
|
List<Face>::Element *left, *right;
|
|
FaceConnect() {
|
|
left = nullptr;
|
|
right = nullptr;
|
|
}
|
|
};
|
|
struct RetFaceConnect {
|
|
List<Geometry::MeshData::Face>::Element *left, *right;
|
|
RetFaceConnect() {
|
|
left = nullptr;
|
|
right = nullptr;
|
|
}
|
|
};
|
|
|
|
static int find_or_create_output_index(int p_old_index, Vector<int> &r_out_indices) {
|
|
for (int n = 0; n < r_out_indices.size(); n++) {
|
|
if (r_out_indices[n] == p_old_index) {
|
|
return n;
|
|
}
|
|
}
|
|
r_out_indices.push_back(p_old_index);
|
|
return r_out_indices.size() - 1;
|
|
}
|
|
|
|
public:
|
|
static uint32_t debug_stop_after;
|
|
static bool _flag_warnings;
|
|
static Error build(const Vector<Vector3> &p_points, Geometry::MeshData &r_mesh, real_t p_over_tolerance_epsilon = 3.0 * UNIT_EPSILON);
|
|
};
|
|
|
|
#endif // QUICK_HULL_H
|