mirror of
https://github.com/Relintai/tile_map_backport.git
synced 2024-11-09 03:12:09 +01:00
Removed delanuay_2d.h as it's available in core/math.
This commit is contained in:
parent
2d3a015200
commit
1e217b58cd
166
delaunay_2d.h
166
delaunay_2d.h
@ -1,166 +0,0 @@
|
|||||||
/*************************************************************************/
|
|
||||||
/* delaunay_2d.h */
|
|
||||||
/*************************************************************************/
|
|
||||||
/* This file is part of: */
|
|
||||||
/* GODOT ENGINE */
|
|
||||||
/* https://godotengine.org */
|
|
||||||
/*************************************************************************/
|
|
||||||
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
|
|
||||||
/* Copyright (c) 2014-2021 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 DELAUNAY_2D_H
|
|
||||||
#define DELAUNAY_2D_H
|
|
||||||
|
|
||||||
#include "core/math/rect2.h"
|
|
||||||
|
|
||||||
class Delaunay2D {
|
|
||||||
public:
|
|
||||||
struct Triangle {
|
|
||||||
int points[3];
|
|
||||||
bool bad = false;
|
|
||||||
Triangle() {}
|
|
||||||
Triangle(int p_a, int p_b, int p_c) {
|
|
||||||
points[0] = p_a;
|
|
||||||
points[1] = p_b;
|
|
||||||
points[2] = p_c;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
struct Edge {
|
|
||||||
int edge[2];
|
|
||||||
bool bad = false;
|
|
||||||
Edge() {}
|
|
||||||
Edge(int p_a, int p_b) {
|
|
||||||
edge[0] = p_a;
|
|
||||||
edge[1] = p_b;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
static bool circum_circle_contains(const Vector<Vector2> &p_vertices, const Triangle &p_triangle, int p_vertex) {
|
|
||||||
Vector2 p1 = p_vertices[p_triangle.points[0]];
|
|
||||||
Vector2 p2 = p_vertices[p_triangle.points[1]];
|
|
||||||
Vector2 p3 = p_vertices[p_triangle.points[2]];
|
|
||||||
|
|
||||||
real_t ab = p1.x * p1.x + p1.y * p1.y;
|
|
||||||
real_t cd = p2.x * p2.x + p2.y * p2.y;
|
|
||||||
real_t ef = p3.x * p3.x + p3.y * p3.y;
|
|
||||||
|
|
||||||
Vector2 circum(
|
|
||||||
(ab * (p3.y - p2.y) + cd * (p1.y - p3.y) + ef * (p2.y - p1.y)) / (p1.x * (p3.y - p2.y) + p2.x * (p1.y - p3.y) + p3.x * (p2.y - p1.y)),
|
|
||||||
(ab * (p3.x - p2.x) + cd * (p1.x - p3.x) + ef * (p2.x - p1.x)) / (p1.y * (p3.x - p2.x) + p2.y * (p1.x - p3.x) + p3.y * (p2.x - p1.x)));
|
|
||||||
|
|
||||||
circum *= 0.5;
|
|
||||||
float r = p1.distance_squared_to(circum);
|
|
||||||
float d = p_vertices[p_vertex].distance_squared_to(circum);
|
|
||||||
return d <= r;
|
|
||||||
}
|
|
||||||
|
|
||||||
static bool edge_compare(const Vector<Vector2> &p_vertices, const Edge &p_a, const Edge &p_b) {
|
|
||||||
if (p_vertices[p_a.edge[0]].is_equal_approx(p_vertices[p_b.edge[0]]) && p_vertices[p_a.edge[1]].is_equal_approx(p_vertices[p_b.edge[1]])) {
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (p_vertices[p_a.edge[0]].is_equal_approx(p_vertices[p_b.edge[1]]) && p_vertices[p_a.edge[1]].is_equal_approx(p_vertices[p_b.edge[0]])) {
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
static Vector<Triangle> triangulate(const Vector<Vector2> &p_points) {
|
|
||||||
Vector<Vector2> points = p_points;
|
|
||||||
Vector<Triangle> triangles;
|
|
||||||
|
|
||||||
Rect2 rect;
|
|
||||||
for (int i = 0; i < p_points.size(); i++) {
|
|
||||||
if (i == 0) {
|
|
||||||
rect.position = p_points[i];
|
|
||||||
} else {
|
|
||||||
rect.expand_to(p_points[i]);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
float delta_max = MAX(rect.size.width, rect.size.height);
|
|
||||||
Vector2 center = rect.get_center();
|
|
||||||
|
|
||||||
points.push_back(Vector2(center.x - 20 * delta_max, center.y - delta_max));
|
|
||||||
points.push_back(Vector2(center.x, center.y + 20 * delta_max));
|
|
||||||
points.push_back(Vector2(center.x + 20 * delta_max, center.y - delta_max));
|
|
||||||
|
|
||||||
triangles.push_back(Triangle(p_points.size() + 0, p_points.size() + 1, p_points.size() + 2));
|
|
||||||
|
|
||||||
for (int i = 0; i < p_points.size(); i++) {
|
|
||||||
Vector<Edge> polygon;
|
|
||||||
|
|
||||||
for (int j = 0; j < triangles.size(); j++) {
|
|
||||||
if (circum_circle_contains(points, triangles[j], i)) {
|
|
||||||
triangles.write[j].bad = true;
|
|
||||||
polygon.push_back(Edge(triangles[j].points[0], triangles[j].points[1]));
|
|
||||||
polygon.push_back(Edge(triangles[j].points[1], triangles[j].points[2]));
|
|
||||||
polygon.push_back(Edge(triangles[j].points[2], triangles[j].points[0]));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
for (int j = 0; j < triangles.size(); j++) {
|
|
||||||
if (triangles[j].bad) {
|
|
||||||
triangles.remove_at(j);
|
|
||||||
j--;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
for (int j = 0; j < polygon.size(); j++) {
|
|
||||||
for (int k = j + 1; k < polygon.size(); k++) {
|
|
||||||
if (edge_compare(points, polygon[j], polygon[k])) {
|
|
||||||
polygon.write[j].bad = true;
|
|
||||||
polygon.write[k].bad = true;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
for (int j = 0; j < polygon.size(); j++) {
|
|
||||||
if (polygon[j].bad) {
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
triangles.push_back(Triangle(polygon[j].edge[0], polygon[j].edge[1], i));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
for (int i = 0; i < triangles.size(); i++) {
|
|
||||||
bool invalid = false;
|
|
||||||
for (int j = 0; j < 3; j++) {
|
|
||||||
if (triangles[i].points[j] >= p_points.size()) {
|
|
||||||
invalid = true;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (invalid) {
|
|
||||||
triangles.remove_at(i);
|
|
||||||
i--;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
return triangles;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
#endif // DELAUNAY_2D_H
|
|
||||||
@ -31,7 +31,7 @@
|
|||||||
#ifndef GEOMETRY_2D_H
|
#ifndef GEOMETRY_2D_H
|
||||||
#define GEOMETRY_2D_H
|
#define GEOMETRY_2D_H
|
||||||
|
|
||||||
#include "delaunay_2d.h"
|
#include "core/math/delaunay.h"
|
||||||
#include "core/math/triangulate.h"
|
#include "core/math/triangulate.h"
|
||||||
#include "vector3i.h"
|
#include "vector3i.h"
|
||||||
#include "core/vector.h"
|
#include "core/vector.h"
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user