1 // Copyright (c) 1999-2014 OPEN CASCADE SAS
3 // This file is part of Open CASCADE Technology software library.
5 // This library is free software; you can redistribute it and/or modify it under
6 // the terms of the GNU Lesser General Public License version 2.1 as published
7 // by the Free Software Foundation, with special exception defined in the file
8 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
9 // distribution for complete text of the license and disclaimer of any warranty.
11 // Alternatively, this file may be used under the terms of Open CASCADE
12 // commercial license or contractual agreement.
14 /***********************************************************************
18 Classe V3d_PositionalLight :
20 HISTORIQUE DES MODIFICATIONS :
21 --------------------------------
22 00-09-92 : GG ; Creation.
23 18-06-96 : FMN ; Ajout MyGraphicStructure1 pour sauvegarder snopick
24 24-12-97 : FMN ; Remplacement de math par MathGra
25 31-12-97 : CAL ; Suppression de MathGra
26 21-01-98 : CAL ; Window de Xw et WNT remplacee par Aspect_Window
27 23-02-98 : FMN ; Remplacement PI par Standard_PI
28 30-03-98 : ZOV ; PRO6774 (reconstruction of the class hierarchy and suppressing useless methods)
30 ************************************************************************/
32 /*----------------------------------------------------------------------*/
38 #include <V3d_PositionalLight.ixx>
39 #include <Graphic3d_Vector.hxx>
40 #include <Graphic3d_Vertex.hxx>
41 #include <Graphic3d_Structure.hxx>
42 #include <Graphic3d_Group.hxx>
43 #include <Graphic3d_ArrayOfSegments.hxx>
44 #include <Graphic3d_AspectMarker3d.hxx>
45 #include <Graphic3d_AspectLine3d.hxx>
46 #include <Graphic3d_AspectText3d.hxx>
47 #include <Visual3d_Light.hxx>
48 #include <Visual3d_ViewManager.hxx>
49 #include <Visual3d_ContextPick.hxx>
50 #include <V3d_BadValue.hxx>
55 #include <gp_Trsf.hxx>
56 #include <TColStd_Array2OfReal.hxx>
57 #include <TCollection_AsciiString.hxx>
58 #include <Aspect_Window.hxx>
64 V3d_PositionalLight::V3d_PositionalLight(const Handle(V3d_Viewer)& VM, const Standard_Real X, const Standard_Real Y, const Standard_Real Z, const Quantity_NameOfColor Name, const Standard_Real A1, const Standard_Real A2):V3d_PositionLight(VM) {
66 Quantity_Color C(Name) ;
67 Graphic3d_Vertex P(X,Y,Z) ;
68 Graphic3d_Vertex T(0.,0.,0.);
70 V3d_BadValue_Raise_if ( A1 < 0 || A1 > 1. || A2 < 0 || A2 > 1,
71 "V3d_PositionalLight, bad coefficients");
73 MyType = V3d_POSITIONAL ;
74 MyLight = new Visual3d_Light(C,P,A1,A2) ;
79 V3d_PositionalLight::V3d_PositionalLight(const Handle(V3d_Viewer)& VM, const Standard_Real Xt, const Standard_Real Yt, const Standard_Real Zt, const Standard_Real Xp, const Standard_Real Yp, const Standard_Real Zp, const Quantity_NameOfColor Name, const Standard_Real A1, const Standard_Real A2):V3d_PositionLight(VM) {
81 Quantity_Color C(Name) ;
82 Graphic3d_Vertex T(Xt,Yt,Zt) ;
83 Graphic3d_Vertex P(Xp,Yp,Zp) ;
85 V3d_BadValue_Raise_if ( A1 < 0 || A1 > 1. || A2 < 0 || A2 > 1,
86 "V3d_PositionalLight, bad coefficients");
88 MyType = V3d_POSITIONAL ;
89 MyLight = new Visual3d_Light(C,P,A1,A2) ;
91 // Graphic structure is initialized during the display.
97 void V3d_PositionalLight::SetPosition(const Standard_Real Xp, const Standard_Real Yp, const Standard_Real Zp) {
98 MyLight->SetPosition (Graphic3d_Vertex (Xp,Yp,Zp));
101 void V3d_PositionalLight::SetAttenuation(const Standard_Real A1, const Standard_Real A2) {
104 V3d_BadValue_Raise_if ( A1 < 0 || A1 > 1. || A2 < 0 || A2 > 1,
105 "V3d_PositionalLight::SetAttenuation, bad coefficients");
107 MyLight->SetAttenuation1(A1) ;
108 MyLight->SetAttenuation2(A2) ;
111 void V3d_PositionalLight::Position(Standard_Real& X, Standard_Real& Y, Standard_Real& Z)const {
114 Standard_Real A1,A2 ;
116 MyLight->Values(C,P,A1,A2) ;
120 void V3d_PositionalLight::Attenuation(Standard_Real& A1, Standard_Real& A2)const {
124 MyLight->Values(C,P,A1,A2) ;
127 void V3d_PositionalLight::Symbol (const Handle(Graphic3d_Group)& gsymbol, const Handle(V3d_View)& aView) const {
129 Standard_Real Xi,Yi,Zi,Xf,Yf,Zf,Rayon,PXT,PYT,X,Y,Z,XT,YT,ZT;
130 Standard_Real A,B,C,Dist,Beta,CosBeta,SinBeta,Coef,X1,Y1,Z1;
131 Standard_Real VX,VY,VZ;
132 Standard_Integer IXP,IYP,j;
133 TColStd_Array2OfReal MatRot(0,2,0,2);
135 aView->Proj(VX,VY,VZ);
136 this->Position(Xi,Yi,Zi);
137 Rayon = this->Radius();
138 aView->Project(Xi,Yi,Zi,PXT,PYT);
139 aView->Convert(PXT,PYT,IXP,IYP);
140 // 3D Coordinate in the plane of projection of the source.
141 aView->Convert(IXP,IYP,XT,YT,ZT);
142 aView->Convert(PXT,PYT+Rayon,IXP,IYP);
143 aView->Convert(IXP,IYP,X,Y,Z);
144 X = X+Xi-XT; Y = Y+Yi-YT; Z = Z+Zi-ZT;
145 Dist = Sqrt( Square(X-Xi) + Square(Y-Yi) + Square(Z-Zi) );
152 V3d::CircleInPlane(gsymbol,Xi,Yi,Zi,VX,VY,VZ,Rayon/40.);
153 for( j=1 ; j<=3 ; j++ ) {
154 Beta = j * M_PI / 4.;
158 MatRot(0,0) = A * A + (1. - A * A) * CosBeta;
159 MatRot(0,1) = -C * SinBeta + Coef * A * B;
160 MatRot(0,2) = B * SinBeta + Coef * A * C;
161 MatRot(1,0) = C * SinBeta + Coef * A * B;
162 MatRot(1,1) = B * B + (1. - B * B) * CosBeta;
163 MatRot(1,2) = -A * SinBeta + Coef * B * C;
164 MatRot(2,0) = -B * SinBeta + Coef * A * C;
165 MatRot(2,1) = A * SinBeta + Coef * B * C;
166 MatRot(2,2) = C * C + (1. - C * C) * CosBeta;
167 Xf = Xi * MatRot(0,0) + Yi * MatRot(0,1) + Zi * MatRot(0,2);
168 Yf = Xi * MatRot(1,0) + Yi * MatRot(1,1) + Zi * MatRot(1,2);
169 Zf = Xi * MatRot(2,0) + Yi * MatRot(2,1) + Zi * MatRot(2,2);
170 // Rotation of the normal
171 X1 = VX * MatRot(0,0) + VY * MatRot(0,1) + VZ * MatRot(0,2);
172 Y1 = VX * MatRot(1,0) + VY * MatRot(1,1) + VZ * MatRot(1,2);
173 Z1 = VX * MatRot(2,0) + VY * MatRot(2,1) + VZ * MatRot(2,2);
174 VX = X1 + Xi - Xf ; VY = Y1 + Yi - Yf ; VZ = Z1 + Zi - Zf;
175 V3d::CircleInPlane(gsymbol,Xi,Yi,Zi,VX,VY,VZ,Rayon/40.);
180 void V3d_PositionalLight::Display( const Handle(V3d_View)& aView,
181 const V3d_TypeOfRepresentation TPres )
183 Graphic3d_Vertex PText ;
184 Standard_Real X,Y,Z,Rayon;
185 Standard_Real X0,Y0,Z0,VX,VY,VZ;
186 Standard_Real X1,Y1,Z1;
187 Standard_Real DXRef,DYRef,DZRef,DXini,DYini,DZini;
188 Standard_Real R1,G1,B1;
189 V3d_TypeOfRepresentation Pres;
190 V3d_TypeOfUpdate UpdSov;
192 // Creation of a structure slight of markable elements (position of the
193 // light, and the domain of lighting represented by a circle)
194 // Creation of a structure snopick of non-markable elements (target, meridian and
198 Handle(V3d_Viewer) TheViewer = aView->Viewer();
199 UpdSov = TheViewer->UpdateMode();
200 TheViewer->SetUpdateMode(V3d_WAIT);
201 if (!MyGraphicStructure.IsNull()) {
202 MyGraphicStructure->Disconnect(MyGraphicStructure1);
203 MyGraphicStructure->Clear();
204 MyGraphicStructure1->Clear();
205 if (Pres == V3d_SAMELAST) Pres = MyTypeOfRepresentation;
208 if (Pres == V3d_SAMELAST) Pres = V3d_SIMPLE;
209 Handle(Graphic3d_Structure) slight = new Graphic3d_Structure(TheViewer->Viewer());
210 MyGraphicStructure = slight;
211 Handle(Graphic3d_Structure) snopick = new Graphic3d_Structure(TheViewer->Viewer());
212 MyGraphicStructure1 = snopick;
215 Handle(Graphic3d_Group) gradius, gExtArrow, gIntArrow;
216 if (Pres == V3d_COMPLETE)
218 gradius = MyGraphicStructure->NewGroup();
219 gExtArrow = MyGraphicStructure->NewGroup();
220 gIntArrow = MyGraphicStructure->NewGroup();
222 Handle(Graphic3d_Group) glight = MyGraphicStructure->NewGroup();
223 Handle(Graphic3d_Group) gsphere;
224 if (Pres == V3d_COMPLETE
225 || Pres == V3d_PARTIAL)
227 gsphere = MyGraphicStructure->NewGroup();
230 Handle(Graphic3d_Group) gnopick = MyGraphicStructure1->NewGroup();
231 MyGraphicStructure1->SetPick(Standard_False);
237 // Display of the position of the light.
239 this->Color(Quantity_TOC_RGB,R1,G1,B1);
240 Quantity_Color Col1(R1,G1,B1,Quantity_TOC_RGB);
241 Handle(Graphic3d_AspectLine3d) Asp1 = new Graphic3d_AspectLine3d();
242 Asp1->SetColor(Col1);
243 glight->SetPrimitivesAspect(Asp1);
244 this->Symbol(glight,aView);
246 // Display of the markable sphere (limit at the cercle).
248 if (Pres == V3d_COMPLETE || Pres == V3d_PARTIAL) {
250 Rayon = this->Radius();
251 aView->Proj(VX,VY,VZ);
252 V3d::CircleInPlane(gsphere,X0,Y0,Z0,VX,VY,VZ,Rayon);
254 // Display of the radius of the sphere (line + text)
256 if (Pres == V3d_COMPLETE) {
257 this->Position(X,Y,Z);
258 Handle(Graphic3d_ArrayOfSegments) aPrims = new Graphic3d_ArrayOfSegments(2);
259 aPrims->AddVertex(X0,Y0,Z0);
260 aPrims->AddVertex(X,Y,Z);
261 gnopick->AddPrimitiveArray(aPrims);
262 V3d::ArrowOfRadius(gExtArrow,X-.1*(X-X0),Y-.1*(Y-Y0),Z-.1*(Z-Z0),X-X0,Y-Y0,Z-Z0,M_PI/15.,Rayon/20.);
263 V3d::ArrowOfRadius(gIntArrow, X0, Y0, Z0, X0-X, Y0-Y, Z0-Z, M_PI / 15., Rayon / 20.);
264 TCollection_AsciiString ValOfRadius(Rayon);
265 PText.SetCoord( 0.5*(X0+X), 0.5*(Y0+Y), 0.5*(Z0+Z) );
266 gradius->Text(ValOfRadius.ToCString(),PText,0.01);
269 // Display of the meridian
271 Quantity_Color Col2(Quantity_NOC_GREEN);
272 Handle(Graphic3d_AspectLine3d) Asp2 = new Graphic3d_AspectLine3d(Col2,Aspect_TOL_SOLID,1.);
273 gnopick->SetPrimitivesAspect(Asp2);
275 // Definition of the axis of circle
276 aView->Up(DXRef,DYRef,DZRef);
277 this->Position(X,Y,Z);
278 DXini = X-X0; DYini = Y-Y0; DZini = Z-Z0;
279 VX = DYRef*DZini - DZRef*DYini;
280 VY = DZRef*DXini - DXRef*DZini;
281 VZ = DXRef*DYini - DYRef*DXini;
283 V3d::CircleInPlane(gnopick,X0,Y0,Z0,VX,VY,VZ,Rayon);
285 // Display of the parallel
287 // Definition of the axis of circle
288 aView->Proj(VX,VY,VZ);
290 DXRef = VY * Z1 - VZ * Y1;
291 DYRef = VZ * X1 - VX * Z1;
292 DZRef = VX * Y1 - VY * X1;
293 this->Position(X,Y,Z);
294 DXini = X-X0; DYini = Y-Y0; DZini = Z-Z0;
295 VX = DYRef*DZini - DZRef*DYini;
296 VY = DZRef*DXini - DXRef*DZini;
297 VZ = DXRef*DYini - DYRef*DXini;
299 V3d::CircleInPlane(gnopick,X0,Y0,Z0,VX,VY,VZ,Rayon);
302 MyGraphicStructure->Connect(MyGraphicStructure1,Graphic3d_TOC_DESCENDANT);
303 MyTypeOfRepresentation = Pres;
304 MyGraphicStructure->Display();
305 TheViewer->SetUpdateMode(UpdSov);