/*************************************************************************/
/* navigation_polygon.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "navigation_polygon.h"
#include "navigation2d.h"
#include "triangulator.h"
#include "core_string_names.h"
void NavigationPolygon::set_vertices(const DVector<Vector2>& p_vertices) {
vertices=p_vertices;
}
DVector<Vector2> NavigationPolygon::get_vertices() const{
return vertices;
}
void NavigationPolygon::_set_polygons(const Array& p_array) {
polygons.resize(p_array.size());
for(int i=0;i<p_array.size();i++) {
polygons[i].indices=p_array[i];
}
}
Array NavigationPolygon::_get_polygons() const {
Array ret;
ret.resize(polygons.size());
for(int i=0;i<ret.size();i++) {
ret[i]=polygons[i].indices;
}
return ret;
}
void NavigationPolygon::_set_outlines(const Array& p_array) {
outlines.resize(p_array.size());
for(int i=0;i<p_array.size();i++) {
outlines[i]=p_array[i];
}
}
Array NavigationPolygon::_get_outlines() const {
Array ret;
ret.resize(outlines.size());
for(int i=0;i<ret.size();i++) {
ret[i]=outlines[i];
}
return ret;
}
void NavigationPolygon::add_polygon(const Vector<int>& p_polygon){
Polygon polygon;
polygon.indices=p_polygon;
polygons.push_back(polygon);
}
void NavigationPolygon::add_outline_at_index(const DVector<Vector2>& p_outline,int p_index) {
outlines.insert(p_index,p_outline);
}
int NavigationPolygon::get_polygon_count() const{
return polygons.size();
}
Vector<int> NavigationPolygon::get_polygon(int p_idx){
ERR_FAIL_INDEX_V(p_idx,polygons.size(),Vector<int>());
return polygons[p_idx].indices;
}
void NavigationPolygon::clear_polygons(){
polygons.clear();
}
void NavigationPolygon::add_outline(const DVector<Vector2>& p_outline) {
outlines.push_back(p_outline);
}
int NavigationPolygon::get_outline_count() const{
return outlines.size();
}
void NavigationPolygon::set_outline(int p_idx,const DVector<Vector2>& p_outline) {
ERR_FAIL_INDEX(p_idx,outlines.size());
outlines[p_idx]=p_outline;
}
void NavigationPolygon::remove_outline(int p_idx) {
ERR_FAIL_INDEX(p_idx,outlines.size());
outlines.remove(p_idx);
}
DVector<Vector2> NavigationPolygon::get_outline(int p_idx) const {
ERR_FAIL_INDEX_V(p_idx,outlines.size(),DVector<Vector2>());
return outlines[p_idx];
}
void NavigationPolygon::clear_outlines(){
outlines.clear();;
}
void NavigationPolygon::make_polygons_from_outlines(){
List<TriangulatorPoly> in_poly,out_poly;
Vector2 outside_point(-1e10,-1e10);
for(int i=0;i<outlines.size();i++) {
DVector<Vector2> ol = outlines[i];
int olsize = ol.size();
if (olsize<3)
continue;
DVector<Vector2>::Read r=ol.read();
for(int j=0;j<olsize;j++) {
outside_point.x = MAX( r[j].x, outside_point.x );
outside_point.y = MAX( r[j].y, outside_point.y );
}
}
outside_point+=Vector2(0.7239784,0.819238); //avoid precision issues
for(int i=0;i<outlines.size();i++) {
DVector<Vector2> ol = outlines[i];
int olsize = ol.size();
if (olsize<3)
continue;
DVector<Vector2>::Read r=ol.read();
int interscount=0;
//test if this is an outer outline
for(int k=0;k<outlines.size();k++) {
if (i==k)
continue; //no self intersect
DVector<Vector2> ol2 = outlines[k];
int olsize2 = ol2.size();
if (olsize2<3)
continue;
DVector<Vector2>::Read r2=ol2.read();
for(int l=0;l<olsize2;l++) {
if (Geometry::segment_intersects_segment_2d(r[0],outside_point,r2[l],r2[(l+1)%olsize2],NULL)) {
interscount++;
}
}
}
bool outer = (interscount%2)==0;
TriangulatorPoly tp;
tp.Init(olsize);
for(int j=0;j<olsize;j++) {
tp[j]=r[j];
}
if (outer)
tp.SetOrientation(TRIANGULATOR_CCW);
else {
tp.SetOrientation(TRIANGULATOR_CW);
tp.SetHole(true);
}
in_poly.push_back(tp);
}
TriangulatorPartition tpart;
if (tpart.ConvexPartition_HM(&in_poly,&out_poly)==0) { //failed!
print_line("convex partition failed!");
return;
}
polygons.clear();
vertices.resize(0);
Map<Vector2,int> points;
for(List<TriangulatorPoly>::Element*I = out_poly.front();I;I=I->next()) {
TriangulatorPoly& tp = I->get();
struct Polygon p;
for(int i=0;i<tp.GetNumPoints();i++) {
Map<Vector2,int>::Element *E=points.find(tp[i]);
if (!E) {
E=points.insert(tp[i],vertices.size());
vertices.push_back(tp[i]);
}
p.indices.push_back(E->get());
}
polygons.push_back(p);
}
emit_signal(CoreStringNames::get_singleton()->changed);
}
void NavigationPolygon::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_vertices","vertices"),&NavigationPolygon::set_vertices);
ObjectTypeDB::bind_method(_MD("get_vertices"),&NavigationPolygon::get_vertices);
ObjectTypeDB::bind_method(_MD("add_polygon","polygon"),&NavigationPolygon::add_polygon);
ObjectTypeDB::bind_method(_MD("get_polygon_count"),&NavigationPolygon::get_polygon_count);
ObjectTypeDB::bind_method(_MD("get_polygon","idx"),&NavigationPolygon::get_polygon);
ObjectTypeDB::bind_method(_MD("clear_polygons"),&NavigationPolygon::clear_polygons);
ObjectTypeDB::bind_method(_MD("add_outline","outline"),&NavigationPolygon::add_outline);
ObjectTypeDB::bind_method(_MD("add_outline_at_index","outline","index"),&NavigationPolygon::add_outline_at_index);
ObjectTypeDB::bind_method(_MD("get_outline_count"),&NavigationPolygon::get_outline_count);
ObjectTypeDB::bind_method(_MD("set_outline","idx","outline"),&NavigationPolygon::set_outline);
ObjectTypeDB::bind_method(_MD("get_outline","idx"),&NavigationPolygon::get_outline);
ObjectTypeDB::bind_method(_MD("remove_outline","idx"),&NavigationPolygon::remove_outline);
ObjectTypeDB::bind_method(_MD("clear_outlines"),&NavigationPolygon::clear_outlines);
ObjectTypeDB::bind_method(_MD("make_polygons_from_outlines"),&NavigationPolygon::make_polygons_from_outlines);
ObjectTypeDB::bind_method(_MD("_set_polygons","polygons"),&NavigationPolygon::_set_polygons);
ObjectTypeDB::bind_method(_MD("_get_polygons"),&NavigationPolygon::_get_polygons);
ObjectTypeDB::bind_method(_MD("_set_outlines","outlines"),&NavigationPolygon::_set_outlines);
ObjectTypeDB::bind_method(_MD("_get_outlines"),&NavigationPolygon::_get_outlines);
ADD_PROPERTY(PropertyInfo(Variant::VECTOR3_ARRAY,"vertices",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR),_SCS("set_vertices"),_SCS("get_vertices"));
ADD_PROPERTY(PropertyInfo(Variant::ARRAY,"polygons",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR),_SCS("_set_polygons"),_SCS("_get_polygons"));
ADD_PROPERTY(PropertyInfo(Variant::ARRAY,"outlines",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_NOEDITOR),_SCS("_set_outlines"),_SCS("_get_outlines"));
}
NavigationPolygon::NavigationPolygon() {
}
void NavigationPolygonInstance::set_enabled(bool p_enabled) {
if (enabled==p_enabled)
return;
enabled=p_enabled;
if (!is_inside_tree())
return;
if (!enabled) {
if (nav_id!=-1) {
navigation->navpoly_remove(nav_id);
nav_id=-1;
}
} else {
if (navigation) {
if (navpoly.is_valid()) {
nav_id = navigation->navpoly_create(navpoly,get_relative_transform_to_parent(navigation),this);
}
}
}
if (get_tree()->is_editor_hint() || get_tree()->is_debugging_navigation_hint())
update();
// update_gizmo();
}
bool NavigationPolygonInstance::is_enabled() const {
return enabled;
}
/////////////////////////////
void NavigationPolygonInstance::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_ENTER_TREE: {
Node2D *c=this;
while(c) {
navigation=c->cast_to<Navigation2D>();
if (navigation) {
if (enabled && navpoly.is_valid()) {
nav_id = navigation->navpoly_create(navpoly,get_relative_transform_to_parent(navigation),this);
}
break;
}
c=c->get_parent()->cast_to<Node2D>();
}
} break;
case NOTIFICATION_TRANSFORM_CHANGED: {
if (navigation && nav_id!=-1) {
navigation->navpoly_set_transform(nav_id,get_relative_transform_to_parent(navigation));
}
} break;
case NOTIFICATION_EXIT_TREE: {
if (navigation) {
if (nav_id!=-1) {
navigation->navpoly_remove(nav_id);
nav_id=-1;
}
}
navigation=NULL;
} break;
case NOTIFICATION_DRAW: {
if (is_inside_tree() && (get_tree()->is_editor_hint() || get_tree()->is_debugging_navigation_hint()) && navpoly.is_valid()) {
DVector<Vector2> verts=navpoly->get_vertices();
int vsize = verts.size();
if (vsize<3)
return;
Color color;
if (enabled) {
color=get_tree()->get_debug_navigation_color();
} else {
color=get_tree()->get_debug_navigation_disabled_color();
}
Vector<Color> colors;
Vector<Vector2> vertices;
vertices.resize(vsize);
colors.resize(vsize);
{
DVector<Vector2>::Read vr = verts.read();
for(int i=0;i<vsize;i++) {
vertices[i]=vr[i];
colors[i]=color;
}
}
Vector<int> indices;
for(int i=0;i<navpoly->get_polygon_count();i++) {
Vector<int> polygon = navpoly->get_polygon(i);
for(int j=2;j<polygon.size();j++) {
int kofs[3]={0,j-1,j};
for(int k=0;k<3;k++) {
int idx = polygon[ kofs[k] ];
ERR_FAIL_INDEX(idx,vsize);
indices.push_back(idx);
}
}
}
VS::get_singleton()->canvas_item_add_triangle_array(get_canvas_item(),indices,vertices,colors);
}
} break;
}
}
void NavigationPolygonInstance::set_navigation_polygon(const Ref<NavigationPolygon>& p_navpoly) {
if (p_navpoly==navpoly)
return;
if (navigation && nav_id!=-1) {
navigation->navpoly_remove(nav_id);
nav_id=-1;
}
if (navpoly.is_valid()) {
navpoly->disconnect(CoreStringNames::get_singleton()->changed,this,"_navpoly_changed");
}
navpoly=p_navpoly;
if (navpoly.is_valid()) {
navpoly->connect(CoreStringNames::get_singleton()->changed,this,"_navpoly_changed");
}
if (navigation && navpoly.is_valid() && enabled) {
nav_id = navigation->navpoly_create(navpoly,get_relative_transform_to_parent(navigation),this);
}
//update_gizmo();
_change_notify("navpoly");
update_configuration_warning();
}
Ref<NavigationPolygon> NavigationPolygonInstance::get_navigation_polygon() const{
return navpoly;
}
void NavigationPolygonInstance::_navpoly_changed() {
if (is_inside_tree() && (get_tree()->is_editor_hint() || get_tree()->is_debugging_navigation_hint()))
update();
}
String NavigationPolygonInstance::get_configuration_warning() const {
if (!is_visible() || !is_inside_tree())
return String();
if (!navpoly.is_valid()) {
return TTR("A NavigationPolygon resource must be set or created for this node to work. Please set a property or draw a polygon.");
}
const Node2D *c=this;
while(c) {
if (c->cast_to<Navigation2D>()) {
return String();
}
c=c->get_parent()->cast_to<Node2D>();
}
return TTR("NavigationPolygonInstance must be a child or grandchild to a Navigation2D node. It only provides navigation data.");
}
void NavigationPolygonInstance::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_navigation_polygon","navpoly:NavigationPolygon"),&NavigationPolygonInstance::set_navigation_polygon);
ObjectTypeDB::bind_method(_MD("get_navigation_polygon:NavigationPolygon"),&NavigationPolygonInstance::get_navigation_polygon);
ObjectTypeDB::bind_method(_MD("set_enabled","enabled"),&NavigationPolygonInstance::set_enabled);
ObjectTypeDB::bind_method(_MD("is_enabled"),&NavigationPolygonInstance::is_enabled);
ObjectTypeDB::bind_method(_MD("_navpoly_changed"),&NavigationPolygonInstance::_navpoly_changed);
ADD_PROPERTY( PropertyInfo(Variant::OBJECT,"navpoly",PROPERTY_HINT_RESOURCE_TYPE,"NavigationPolygon"),_SCS("set_navigation_polygon"),_SCS("get_navigation_polygon"));
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"enabled"),_SCS("set_enabled"),_SCS("is_enabled"));
}
NavigationPolygonInstance::NavigationPolygonInstance() {
navigation=NULL;
nav_id=-1;
enabled=true;
}