kindred/create
1
1
Fork 0
Code Issues 37 Pull Requests Actions Packages Projects 9 Releases 2 Wiki Activity

+ unify DLL export defines to namespace names

Browse Source 
git-svn-id: https://free-cad.svn.sourceforge.net/svnroot/free-cad/trunk@5000 e8eeb9e2-ec13-0410-a4a9-efa5cf37419d
This commit is contained in:
wmayer
2011-10-10 13:44:52 +00:00
commit 120ca87015
4155 changed files with 2965978 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

419
src/Mod/Drawing/App/ProjectionAlgos.cpp Normal file
View File

@@ -0,0 +1,419 @@
/***************************************************************************
* Copyright (c) Jürgen Riegel (juergen.riegel@web.de) 2002 *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 *
* GNU Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include "PreCompiled.h"
#ifndef _PreComp_
# include <sstream>
# include <BRepAdaptor_Curve.hxx>
# include <Geom_Circle.hxx>
# include <gp_Circ.hxx>
# include <gp_Elips.hxx>
#endif
#include <Bnd_Box.hxx>
#include <BRepBndLib.hxx>
#include <BRepBuilderAPI_Transform.hxx>
#include <HLRBRep_Algo.hxx>
#include <TopoDS_Shape.hxx>
#include <HLRTopoBRep_OutLiner.hxx>
//#include <BRepAPI_MakeOutLine.hxx>
#include <HLRAlgo_Projector.hxx>
#include <HLRBRep_ShapeBounds.hxx>
#include <HLRBRep_HLRToShape.hxx>
#include <gp_Ax2.hxx>
#include <gp_Pnt.hxx>
#include <gp_Dir.hxx>
#include <gp_Vec.hxx>
#include <Poly_Polygon3D.hxx>
#include <Poly_Triangulation.hxx>
#include <Poly_PolygonOnTriangulation.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Face.hxx>
#include <TopoDS_Edge.hxx>
#include <TopoDS_Vertex.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopTools_IndexedMapOfShape.hxx>
#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
#include <TopTools_ListOfShape.hxx>
#include <TColgp_Array1OfPnt2d.hxx>
#include <BRep_Tool.hxx>
#include <BRepMesh.hxx>
#include <BRepAdaptor_CompCurve.hxx>
#include <Handle_BRepAdaptor_HCompCurve.hxx>
#include <Approx_Curve3d.hxx>
#include <BRepAdaptor_HCurve.hxx>
#include <Handle_BRepAdaptor_HCurve.hxx>
#include <Geom_BSplineCurve.hxx>
#include <Handle_Geom_BSplineCurve.hxx>
#include <Geom_BezierCurve.hxx>
#include <GeomConvert_BSplineCurveToBezierCurve.hxx>
#include <Base/Exception.h>
#include <Base/FileInfo.h>
#include <Base/Tools.h>
#include <Mod/Part/App/PartFeature.h>
#include "ProjectionAlgos.h"
using namespace Drawing;
using namespace std;
//===========================================================================
// ProjectionAlgos
//===========================================================================
ProjectionAlgos::ProjectionAlgos(const TopoDS_Shape &Input, const Base::Vector3f &Dir)
: Input(Input), Direction(Dir)
{
execute();
}
ProjectionAlgos::~ProjectionAlgos()
{
}
TopoDS_Shape ProjectionAlgos::invertY(const TopoDS_Shape& shape)
{
// make sure to have the y coordinates inverted
gp_Trsf mat;
Bnd_Box bounds;
BRepBndLib::Add(shape, bounds);
bounds.SetGap(0.0);
Standard_Real xMin, yMin, zMin, xMax, yMax, zMax;
bounds.Get(xMin, yMin, zMin, xMax, yMax, zMax);
mat.SetMirror(gp_Ax2(gp_Pnt((xMin+xMax)/2,(yMin+yMax)/2,(zMin+zMax)/2), gp_Dir(0,1,0)));
BRepBuilderAPI_Transform mkTrf(shape, mat);
return mkTrf.Shape();
}
void ProjectionAlgos::execute(void)
{
Handle( HLRBRep_Algo ) brep_hlr = new HLRBRep_Algo;
brep_hlr->Add(Input);
gp_Ax2 transform(gp_Pnt(0,0,0),gp_Dir(Direction.x,Direction.y,Direction.z));
HLRAlgo_Projector projector( transform );
brep_hlr->Projector(projector);
brep_hlr->Update();
brep_hlr->Hide();
// extracting the result sets:
HLRBRep_HLRToShape shapes( brep_hlr );
V = shapes.VCompound ();// hard edge visibly
V1 = shapes.Rg1LineVCompound();// Smoth edges visibly
VN = shapes.RgNLineVCompound();// contour edges visibly
VO = shapes.OutLineVCompound();// contours apparents visibly
VI = shapes.IsoLineVCompound();// isoparamtriques visibly
H = shapes.HCompound ();// hard edge invisibly
H1 = shapes.Rg1LineHCompound();// Smoth edges invisibly
HN = shapes.RgNLineHCompound();// contour edges invisibly
HO = shapes.OutLineHCompound();// contours apparents invisibly
HI = shapes.IsoLineHCompound();// isoparamtriques invisibly
}
std::string ProjectionAlgos::getSVG(SvgExtractionType type, float scale)
{
std::stringstream result;
if (!H.IsNull() && (type & WithHidden)) {
float width = 0.15f/scale;
BRepMesh::Mesh(H,0.1);
result << "<g"
//<< " id=\"" << ViewName << "\"" << endl
<< " stroke=\"rgb(0, 0, 0)\"" << endl
<< " stroke-width=\"" << width << "\"" << endl
<< " stroke-linecap=\"butt\"" << endl
<< " stroke-linejoin=\"miter\"" << endl
<< " stroke-dasharray=\"5 3\"" << endl
<< " fill=\"none\"" << endl
<< " >" << endl
<< Edges2SVG(H)
<< "</g>" << endl;
}
if (!HO.IsNull() && (type & WithHidden)) {
float width = 0.15f/scale;
BRepMesh::Mesh(HO,0.1);
result << "<g"
//<< " id=\"" << ViewName << "\"" << endl
<< " stroke=\"rgb(0, 0, 0)\"" << endl
<< " stroke-width=\"" << width << "\"" << endl
<< " stroke-linecap=\"butt\"" << endl
<< " stroke-linejoin=\"miter\"" << endl
<< " stroke-dasharray=\"5 3\"" << endl
<< " fill=\"none\"" << endl
<< " >" << endl
<< Edges2SVG(HO)
<< "</g>" << endl;
}
if (!VO.IsNull()) {
float width = 0.35f/scale;
BRepMesh::Mesh(VO,0.1);
result << "<g"
//<< " id=\"" << ViewName << "\"" << endl
<< " stroke=\"rgb(0, 0, 0)\"" << endl
<< " stroke-width=\"" << width << "\"" << endl
<< " stroke-linecap=\"butt\"" << endl
<< " stroke-linejoin=\"miter\"" << endl
<< " fill=\"none\"" << endl
<< " >" << endl
<< Edges2SVG(VO)
<< "</g>" << endl;
}
if (!V.IsNull()) {
float width = 0.35f/scale;
BRepMesh::Mesh(V,0.1);
result << "<g"
//<< " id=\"" << ViewName << "\"" << endl
<< " stroke=\"rgb(0, 0, 0)\"" << endl
<< " stroke-width=\"" << width << "\"" << endl
<< " stroke-linecap=\"butt\"" << endl
<< " stroke-linejoin=\"miter\"" << endl
<< " fill=\"none\"" << endl
<< " >" << endl
<< Edges2SVG(V)
<< "</g>" << endl;
}
if (!V1.IsNull() && (type & WithSmooth)) {
float width = 0.35f/scale;
BRepMesh::Mesh(V1,0.1);
result << "<g"
//<< " id=\"" << ViewName << "\"" << endl
<< " stroke=\"rgb(0, 0, 0)\"" << endl
<< " stroke-width=\"" << width << "\"" << endl
<< " stroke-linecap=\"butt\"" << endl
<< " stroke-linejoin=\"miter\"" << endl
<< " fill=\"none\"" << endl
<< " >" << endl
<< Edges2SVG(V1)
<< "</g>" << endl;
}
if (!H1.IsNull() && (type & WithSmooth) && (type & WithHidden)) {
float width = 0.15f/scale;
BRepMesh::Mesh(H1,0.1);
result << "<g"
//<< " id=\"" << ViewName << "\"" << endl
<< " stroke=\"rgb(0, 0, 0)\"" << endl
<< " stroke-width=\"" << width << "\"" << endl
<< " stroke-linecap=\"butt\"" << endl
<< " stroke-linejoin=\"miter\"" << endl
<< " stroke-dasharray=\"5 3\"" << endl
<< " fill=\"none\"" << endl
<< " >" << endl
<< Edges2SVG(H1)
<< "</g>" << endl;
}
return result.str();
}
std::string ProjectionAlgos::Edges2SVG(const TopoDS_Shape &Input)
{
std::stringstream result;
TopExp_Explorer edges( Input, TopAbs_EDGE );
for (int i = 1 ; edges.More(); edges.Next(),i++ ) {
const TopoDS_Edge& edge = TopoDS::Edge(edges.Current());
BRepAdaptor_Curve adapt(edge);
if (adapt.GetType() == GeomAbs_Circle) {
printCircle(adapt, result);
}
else if (adapt.GetType() == GeomAbs_Ellipse) {
printEllipse(adapt, i, result);
}
else if (adapt.GetType() == GeomAbs_BSplineCurve) {
printBSpline(adapt, i, result);
}
// fallback
else {
printGeneric(adapt, i, result);
}
}
return result.str();
}
void ProjectionAlgos::printGeneric(const BRepAdaptor_Curve& c, int id, std::ostream& out)
{
TopLoc_Location location;
Handle(Poly_Polygon3D) polygon = BRep_Tool::Polygon3D(c.Edge(), location);
if (!polygon.IsNull()) {
const TColgp_Array1OfPnt& nodes = polygon->Nodes();
char c = 'M';
out << "<path id= \"" /*<< ViewName*/ << id << "\" d=\" ";
for (int i = nodes.Lower(); i <= nodes.Upper(); i++){
out << c << " " << nodes(i).X() << " " << nodes(i).Y()<< " " ;
c = 'L';
}
out << "\" />" << endl;
}
}
void ProjectionAlgos::printCircle(const BRepAdaptor_Curve& c, std::ostream& out)
{
gp_Circ circ = c.Circle();
const gp_Pnt& p= circ.Location();
double r = circ.Radius();
double f = c.FirstParameter();
double l = c.LastParameter();
gp_Pnt s = c.Value(f);
gp_Pnt m = c.Value((l+f)/2.0);
gp_Pnt e = c.Value(l);
gp_Vec v1(m,s);
gp_Vec v2(m,e);
gp_Vec v3(0,0,1);
double a = v3.DotCross(v1,v2);
// a full circle
if (s.SquareDistance(e) < 0.001) {
out << "<circle cx =\"" << p.X() << "\" cy =\""
<< p.Y() << "\" r =\"" << r << "\" />";
}
// arc of circle
else {
// See also https://developer.mozilla.org/en/SVG/Tutorial/Paths
char xar = '0'; // x-axis-rotation
char las = (l-f > D_PI) ? '1' : '0'; // large-arc-flag
char swp = (a < 0) ? '1' : '0'; // sweep-flag, i.e. clockwise (0) or counter-clockwise (1)
out << "<path d=\"M" << s.X() << " " << s.Y()
<< " A" << r << " " << r << " "
<< xar << " " << las << " " << swp << " "
<< e.X() << " " << e.Y() << "\" />";
}
}
void ProjectionAlgos::printEllipse(const BRepAdaptor_Curve& c, int id, std::ostream& out)
{
gp_Elips ellp = c.Ellipse();
const gp_Pnt& p= ellp.Location();
double r1 = ellp.MajorRadius();
double r2 = ellp.MinorRadius();
double f = c.FirstParameter();
double l = c.LastParameter();
gp_Pnt s = c.Value(f);
gp_Pnt m = c.Value((l+f)/2.0);
gp_Pnt e = c.Value(l);
gp_Vec v1(m,s);
gp_Vec v2(m,e);
gp_Vec v3(0,0,1);
double a = v3.DotCross(v1,v2);
// a full ellipse
if (s.SquareDistance(e) < 0.001) {
out << "<ellipse cx =\"" << p.X() << "\" cy =\""
<< p.Y() << "\" rx =\"" << r1 << "\" ry =\"" << r2 << "\"/>";
}
// arc of ellipse
else {
// See also https://developer.mozilla.org/en/SVG/Tutorial/Paths
gp_Dir xaxis = ellp.XAxis().Direction();
Standard_Real angle = xaxis.Angle(gp_Dir(1,0,0));
angle = Base::toDegrees<double>(angle);
char las = (l-f > D_PI) ? '1' : '0'; // large-arc-flag
char swp = (a < 0) ? '1' : '0'; // sweep-flag, i.e. clockwise (0) or counter-clockwise (1)
out << "<path d=\"M" << s.X() << " " << s.Y()
<< " A" << r1 << " " << r2 << " "
<< angle << " " << las << " " << swp << " "
<< e.X() << " " << e.Y() << "\" />";
}
}
void ProjectionAlgos::printBSpline(const BRepAdaptor_Curve& c, int id, std::ostream& out)
{
try {
std::stringstream str;
Handle_Geom_BSplineCurve spline = c.BSpline();
if (spline->Degree() > 3) {
Standard_Real tol3D = 0.001;
Standard_Integer maxDegree = 3, maxSegment = 10;
Handle_BRepAdaptor_HCurve hCurve = new BRepAdaptor_HCurve(c);
// approximate the curve using a tolerance
Approx_Curve3d approx(hCurve,tol3D,GeomAbs_C2,maxSegment,maxDegree);
if (approx.IsDone() && approx.HasResult()) {
// have the result
spline = approx.Curve();
}
}
GeomConvert_BSplineCurveToBezierCurve crt(spline);
Standard_Integer arcs = crt.NbArcs();
str << "<path d=\"M";
for (Standard_Integer i=1; i<=arcs; i++) {
Handle_Geom_BezierCurve bezier = crt.Arc(i);
Standard_Integer poles = bezier->NbPoles();
if (bezier->Degree() == 3) {
if (poles != 4)
Standard_Failure::Raise("do it the generic way");
gp_Pnt p1 = bezier->Pole(1);
gp_Pnt p2 = bezier->Pole(2);
gp_Pnt p3 = bezier->Pole(3);
gp_Pnt p4 = bezier->Pole(4);
if (i == 1) {
str << p1.X() << "," << p1.Y() << " C"
<< p2.X() << "," << p2.Y() << " "
<< p3.X() << "," << p3.Y() << " "
<< p4.X() << "," << p4.Y() << " ";
}
else {
str << "S"
<< p3.X() << "," << p3.Y() << " "
<< p4.X() << "," << p4.Y() << " ";
}
}
else if (bezier->Degree() == 2) {
if (poles != 3)
Standard_Failure::Raise("do it the generic way");
gp_Pnt p1 = bezier->Pole(1);
gp_Pnt p2 = bezier->Pole(2);
gp_Pnt p3 = bezier->Pole(3);
if (i == 1) {
str << p1.X() << "," << p1.Y() << " Q"
<< p2.X() << "," << p2.Y() << " "
<< p3.X() << "," << p3.Y() << " ";
}
else {
str << "T"
<< p3.X() << "," << p3.Y() << " ";
}
}
else {
Standard_Failure::Raise("do it the generic way");
}
}
str << "\" />";
out << str.str();
}
catch (Standard_Failure) {
printGeneric(c, id, out);
}
}