mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-09-11 06:18:09 +00:00
Thomas Krijnen
c99633eb90
- Basic checks for valid file stream, seperated logging to stdout and stderr - Use placement new to reconstruct MakeFace for non-planar face
108 lines
5.3 KiB
C++
108 lines
5.3 KiB
C++
/********************************************************************************
|
|
* *
|
|
* This file is part of IfcOpenShell. *
|
|
* *
|
|
* IfcOpenShell is free software: you can redistribute it and/or modify *
|
|
* it under the terms of the Lesser GNU General Public License as published by *
|
|
* the Free Software Foundation, either version 3.0 of the License, or *
|
|
* (at your option) any later version. *
|
|
* *
|
|
* IfcOpenShell is distributed in the hope that it will be useful, *
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
|
|
* Lesser GNU General Public License for more details. *
|
|
* *
|
|
* You should have received a copy of the Lesser GNU General Public License *
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
|
|
* *
|
|
********************************************************************************/
|
|
|
|
/********************************************************************************
|
|
* *
|
|
* Geometrical data in an IFC file consists of shapes (IfcShapeRepresentation) *
|
|
* and instances (SUBTYPE OF IfcBuildingElement e.g. IfcWindow). *
|
|
* *
|
|
* IfcMesh is a class that represents a triangulated IfcShapeRepresentation. *
|
|
* IfcMesh.verts is a 1 dimensional vector of float defining the cartesian *
|
|
* coordinates of the vertices of the triangulated shape in the format of *
|
|
* [x1,y1,z1,..,xn,yn,zn] *
|
|
* IfcMesh.faces is a 1 dimensional vector of int containing the indices of *
|
|
* the triangles referencing positions in IfcMesh.verts *
|
|
* IfcMesh.edges is a 1 dimensional vector of int in {0,1} that dictates *
|
|
* the visibility of the edges that span the faces in IfcMesh.faces *
|
|
* *
|
|
* IfcGeomObject represents the actual IfcBuildingElements. *
|
|
* IfcGeomObject.name is the GUID of the element *
|
|
* IfcGeomObject.type is the datatype of the element e.g. IfcWindow *
|
|
* IfcGeomObject.mesh is a pointer to an IfcMesh *
|
|
* IfcGeomObject.matrix is a 4x3 matrix that defines the orientation and *
|
|
* translation of the mesh in relation to the world origin *
|
|
* *
|
|
* Init(char* fn, bool world_coords) parses the IFC file in fn, returns true *
|
|
* on succes, world_coords = true will result in all IfcGeomObject.matrix *
|
|
* being an identity matrix and IfcMesh.verts containing global positions *
|
|
* *
|
|
* Get() returns a pointer to the current IfcGeomObject *
|
|
* *
|
|
* Next() returns true if there is an entity yet available *
|
|
* *
|
|
* Progress() returns an int in [0..100] that indicates the overall progress *
|
|
* *
|
|
********************************************************************************/
|
|
|
|
#ifndef IFCOBJECTS_H
|
|
#define IFCOBJECTS_H
|
|
|
|
#include <map>
|
|
#include <vector>
|
|
#include <algorithm>
|
|
|
|
#include <gp_Trsf.hxx>
|
|
#include <gp_Pnt.hxx>
|
|
#include <TopoDS.hxx>
|
|
|
|
namespace IfcGeomObjects {
|
|
|
|
typedef std::vector<int>::const_iterator IntIt;
|
|
typedef std::vector<float>::const_iterator FltIt;
|
|
typedef std::pair< float,std::pair<float,float> > VertKey;
|
|
typedef std::map<VertKey,int> VertKeyMap;
|
|
typedef std::pair<int,int> Edge;
|
|
|
|
class IfcMesh {
|
|
public:
|
|
int id;
|
|
std::vector<float> verts;
|
|
std::vector<int> faces;
|
|
std::vector<int> edges;
|
|
VertKeyMap welds;
|
|
|
|
IfcMesh(int i, TopoDS_Shape s);
|
|
private:
|
|
int addvert(gp_Pnt p);
|
|
inline void addedge(int n1, int n2, std::map<std::pair<int,int>,int>& edgecount, std::vector<std::pair<int,int> >& edges_temp) {
|
|
const Edge e = Edge( (std::min)(n1,n2),(std::max)(n1,n2) );
|
|
if ( edgecount.find(e) == edgecount.end() ) edgecount[e] = 1;
|
|
else edgecount[e] ++;
|
|
edges_temp.push_back(e);
|
|
}
|
|
};
|
|
|
|
class IfcGeomObject {
|
|
public:
|
|
std::string name;
|
|
std::string type;
|
|
std::vector<float> matrix;
|
|
IfcMesh* mesh;
|
|
IfcGeomObject( const std::string& n, const std::string& t, gp_Trsf trsf, IfcMesh* m );
|
|
};
|
|
|
|
extern bool Init(const char* fn, bool world_coords = false, std::ostream* log1= 0, std::ostream* log2= 0);
|
|
extern const IfcGeomObject* Get();
|
|
extern bool Next();
|
|
extern int Progress();
|
|
|
|
}
|
|
|
|
#endif
|