110 lines
2.2 KiB
C++
110 lines
2.2 KiB
C++
#ifndef GPC_POLYGON_H
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#define GPC_POLYGON_H
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#include <Indoor/floorplan/v2/Floorplan.h>
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#include "gpc.h"
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class Polygon {
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struct GPCPolygon : gpc_polygon {
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GPCPolygon() {
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// contour = (gpc_vertex_list*) calloc(0, 1024);
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// contour->num_vertices = 0;
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// contour->vertex = (gpc_vertex*) calloc(0, 1024);
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// hole = (int*) calloc(0, 1024);
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num_contours = 0;
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contour = nullptr;
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hole = nullptr;
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}
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~GPCPolygon() {
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if (contour) {
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gpc_free_polygon(this);
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//free(contour->vertex); contour->vertex = nullptr;
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}
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free(contour); contour = nullptr;
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free(hole); hole = nullptr;
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}
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GPCPolygon& operator = (const GPCPolygon& o) = delete;
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GPCPolygon& operator = (GPCPolygon& o) {
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this->contour = o.contour;
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this->hole = o.hole;
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this->num_contours = o.num_contours;
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o.contour = nullptr;
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o.hole = nullptr;
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return *this;
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}
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};
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private:
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GPCPolygon state;
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public:
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void add(const Floorplan::Polygon2& poly) {
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GPCPolygon cur = toGPC(poly);
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//GPCPolygon out;
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gpc_polygon_clip(GPC_UNION, &state, &cur, &state);
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//state = out;
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}
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void remove(const Floorplan::Polygon2& poly) {
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GPCPolygon cur = toGPC(poly);
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//GPCPolygon out;
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gpc_polygon_clip(GPC_DIFF, &state, &cur, &state);
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//state = out;
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}
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std::vector<std::vector<Point3>> get(float z) {
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gpc_tristrip res;
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res.num_strips = 0;
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res.strip = nullptr;
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//res.strip = (gpc_vertex_list*) malloc(1024);
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gpc_polygon_to_tristrip(&state, &res);
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std::vector<std::vector<Point3>> trias;
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for (int i = 0; i < res.num_strips; ++i) {
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gpc_vertex_list lst = res.strip[i];
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std::vector<Point3> tria;
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for (int j = 0; j < lst.num_vertices; ++j) {
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gpc_vertex& vert = lst.vertex[j];
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Point3 p3(vert.x, vert.y, z);
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tria.push_back(p3);
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}
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trias.push_back(tria);
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}
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gpc_free_tristrip(&res);
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return std::move(trias);
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}
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private:
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GPCPolygon toGPC(Floorplan::Polygon2 poly) {
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std::vector<gpc_vertex> verts;
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for (Point2 p2 : poly.points) {
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gpc_vertex vert; vert.x = p2.x; vert.y = p2.y;
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verts.push_back(vert);
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}
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GPCPolygon gpol;
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gpc_vertex_list list;
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list.num_vertices = verts.size();
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list.vertex = verts.data();
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gpc_add_contour(&gpol, &list, 0);
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return gpol;
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}
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};
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#endif // GPC_POLYGON_H
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