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/*************************************************************************/
/* convex_polygon_shape_2d.cpp */
/*************************************************************************/
/* 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. */
/*************************************************************************/
#include "convex_polygon_shape_2d.h"
#include "core/math/geometry_2d.h"
#include "servers/physics_server_2d.h"
#include "servers/rendering_server.h"
bool ConvexPolygonShape2D::_edit_is_selected_on_click(const Point2 &p_point, double p_tolerance) const {
return Geometry2D::is_point_in_polygon(p_point, points);
}
void ConvexPolygonShape2D::_update_shape() {
Vector<Vector2> final_points = points;
if (Geometry2D::is_polygon_clockwise(final_points)) { //needs to be counter clockwise
final_points.invert();
}
PhysicsServer2D::get_singleton()->shape_set_data(get_rid(), final_points);
emit_changed();
}
void ConvexPolygonShape2D::set_point_cloud(const Vector<Vector2> &p_points) {
Vector<Point2> hull = Geometry2D::convex_hull(p_points);
ERR_FAIL_COND(hull.size() < 3);
set_points(hull);
}
void ConvexPolygonShape2D::set_points(const Vector<Vector2> &p_points) {
points = p_points;
_update_shape();
}
Vector<Vector2> ConvexPolygonShape2D::get_points() const {
return points;
}
void ConvexPolygonShape2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_point_cloud", "point_cloud"), &ConvexPolygonShape2D::set_point_cloud);
ClassDB::bind_method(D_METHOD("set_points", "points"), &ConvexPolygonShape2D::set_points);
ClassDB::bind_method(D_METHOD("get_points"), &ConvexPolygonShape2D::get_points);
ADD_PROPERTY(PropertyInfo(Variant::PACKED_VECTOR2_ARRAY, "points"), "set_points", "get_points");
}
void ConvexPolygonShape2D::draw(const RID &p_to_rid, const Color &p_color) {
Vector<Color> col;
col.push_back(p_color);
RenderingServer::get_singleton()->canvas_item_add_polygon(p_to_rid, points, col);
if (is_collision_outline_enabled()) {
RenderingServer::get_singleton()->canvas_item_add_polyline(p_to_rid, points, col);
// Draw the last segment as it's not drawn by `canvas_item_add_polyline()`.
RenderingServer::get_singleton()->canvas_item_add_line(p_to_rid, points[points.size() - 1], points[0], p_color);
}
}
Rect2 ConvexPolygonShape2D::get_rect() const {
Rect2 rect;
for (int i = 0; i < points.size(); i++) {
if (i == 0) {
rect.position = points[i];
} else {
rect.expand_to(points[i]);
}
}
return rect;
}
real_t ConvexPolygonShape2D::get_enclosing_radius() const {
real_t r = 0.0;
for (int i(0); i < get_points().size(); i++) {
r = MAX(get_points()[i].length_squared(), r);
}
return Math::sqrt(r);
}
ConvexPolygonShape2D::ConvexPolygonShape2D() :
Shape2D(PhysicsServer2D::get_singleton()->convex_polygon_shape_create()) {
}
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