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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
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4 // * 4 // * *
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17 // * 17 // * *
18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or *
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24 // ******************************************* 24 // ********************************************************************
25 // 25 //
26 // 26 //
27 // 27 //
28 // 28 //
29 // Andrew Walkden 10th February 1997 29 // Andrew Walkden 10th February 1997
30 // OpenGL immediate scene - draws immediately 30 // OpenGL immediate scene - draws immediately to buffer
31 // (saving space on 31 // (saving space on server).
32 32
33 #include "G4OpenGLImmediateSceneHandler.hh" 33 #include "G4OpenGLImmediateSceneHandler.hh"
34 34
35 #include "G4OpenGLViewer.hh" 35 #include "G4OpenGLViewer.hh"
36 #include "G4OpenGLTransform3D.hh" 36 #include "G4OpenGLTransform3D.hh"
37 #include "G4Polyline.hh" 37 #include "G4Polyline.hh"
38 #include "G4Polymarker.hh" 38 #include "G4Polymarker.hh"
39 #include "G4Text.hh" 39 #include "G4Text.hh"
40 #include "G4Circle.hh" 40 #include "G4Circle.hh"
41 #include "G4Square.hh" 41 #include "G4Square.hh"
42 #include "G4Polyhedron.hh" 42 #include "G4Polyhedron.hh"
43 #include "G4AttHolder.hh" 43 #include "G4AttHolder.hh"
44 44
45 #include <typeinfo> 45 #include <typeinfo>
46 46
47 G4OpenGLImmediateSceneHandler::G4OpenGLImmedia 47 G4OpenGLImmediateSceneHandler::G4OpenGLImmediateSceneHandler
48 (G4VGraphicsSystem& system,const G4String& nam 48 (G4VGraphicsSystem& system,const G4String& name):
49 G4OpenGLSceneHandler (system, fSceneIdCount+ 49 G4OpenGLSceneHandler (system, fSceneIdCount++, name)
50 {} 50 {}
51 51
52 G4OpenGLImmediateSceneHandler::~G4OpenGLImmedi 52 G4OpenGLImmediateSceneHandler::~G4OpenGLImmediateSceneHandler ()
53 {} 53 {}
54 54
55 #include <iomanip> 55 #include <iomanip>
56 56
57 G4bool G4OpenGLImmediateSceneHandler::AddPrimi 57 G4bool G4OpenGLImmediateSceneHandler::AddPrimitivePreamble(const G4VMarker& visible)
58 { 58 {
59 return AddPrimitivePreambleInternal(visibl 59 return AddPrimitivePreambleInternal(visible, true, false);
60 } 60 }
61 G4bool G4OpenGLImmediateSceneHandler::AddPrimi 61 G4bool G4OpenGLImmediateSceneHandler::AddPrimitivePreamble(const G4Polyline& visible)
62 { 62 {
63 return AddPrimitivePreambleInternal(visible, 63 return AddPrimitivePreambleInternal(visible, false, true);
64 } 64 }
65 G4bool G4OpenGLImmediateSceneHandler::AddPrimi 65 G4bool G4OpenGLImmediateSceneHandler::AddPrimitivePreamble(const G4Polyhedron& visible)
66 { 66 {
67 return AddPrimitivePreambleInternal(visible, 67 return AddPrimitivePreambleInternal(visible, false, false);
68 } 68 }
69 69
70 G4bool G4OpenGLImmediateSceneHandler::AddPrimi 70 G4bool G4OpenGLImmediateSceneHandler::AddPrimitivePreambleInternal(const G4Visible& visible, bool isMarker, bool isPolyline)
71 { 71 {
72 // Get applicable vis attributes for all pri 72 // Get applicable vis attributes for all primitives.
73 fpVisAttribs = fpViewer->GetApplicableVisAtt 73 fpVisAttribs = fpViewer->GetApplicableVisAttributes(visible.GetVisAttributes());
74 const G4Colour& c = GetColour (); 74 const G4Colour& c = GetColour ();
75 G4double opacity = c.GetAlpha (); 75 G4double opacity = c.GetAlpha ();
76 76
77 G4bool transparency_enabled = true; 77 G4bool transparency_enabled = true;
78 G4bool isMarkerNotHidden = true; 78 G4bool isMarkerNotHidden = true;
79 G4OpenGLViewer* pViewer = dynamic_cast<G4Ope 79 G4OpenGLViewer* pViewer = dynamic_cast<G4OpenGLViewer*>(fpViewer);
80 if (pViewer) { 80 if (pViewer) {
81 transparency_enabled = pViewer->transparen 81 transparency_enabled = pViewer->transparency_enabled;
82 isMarkerNotHidden = pViewer->fVP.IsMarkerN 82 isMarkerNotHidden = pViewer->fVP.IsMarkerNotHidden();
83 } 83 }
84 84
85 G4bool isMarkerOrPolyline = isMarker || isPo 85 G4bool isMarkerOrPolyline = isMarker || isPolyline;
86 G4bool treatAsTransparent = transparency_ena 86 G4bool treatAsTransparent = transparency_enabled && opacity < 1.;
87 G4bool treatAsNotHidden = isMarkerNotHidden 87 G4bool treatAsNotHidden = isMarkerNotHidden && (isMarker || isPolyline);
88 88
89 if (fProcessing2D) glDisable (GL_DEPTH_TEST) 89 if (fProcessing2D) glDisable (GL_DEPTH_TEST);
90 else { 90 else {
91 if (isMarkerOrPolyline && isMarkerNotHidde 91 if (isMarkerOrPolyline && isMarkerNotHidden)
92 glDisable (GL_DEPTH_TEST); 92 glDisable (GL_DEPTH_TEST);
93 else {glEnable (GL_DEPTH_TEST); glDepthFun 93 else {glEnable (GL_DEPTH_TEST); glDepthFunc (GL_LEQUAL);}
94 } 94 }
95 95
96 if (fThreePassCapable) { 96 if (fThreePassCapable) {
97 97
98 // Ensure transparent objects are drawn op 98 // Ensure transparent objects are drawn opaque ones and before
99 // non-hidden markers. The problem of ble 99 // non-hidden markers. The problem of blending/transparency/alpha
100 // is quite a tricky one - see History of 100 // is quite a tricky one - see History of opengl-V07-01-01/2/3.
101 if (!(fSecondPassForTransparency || fThird 101 if (!(fSecondPassForTransparency || fThirdPassForNonHiddenMarkers)) {
102 // First pass... 102 // First pass...
103 if (treatAsTransparent) { // Request pa 103 if (treatAsTransparent) { // Request pass for transparent objects...
104 fSecondPassForTransparencyRequested = 104 fSecondPassForTransparencyRequested = true;
105 } 105 }
106 if (treatAsNotHidden) { // Request pa 106 if (treatAsNotHidden) { // Request pass for non-hidden markers...
107 fThirdPassForNonHiddenMarkersRequested 107 fThirdPassForNonHiddenMarkersRequested = true;
108 } 108 }
109 // On first pass, transparent objects an 109 // On first pass, transparent objects and non-hidden markers are not drawn...
110 if (treatAsTransparent || treatAsNotHidd 110 if (treatAsTransparent || treatAsNotHidden) {
111 return false; 111 return false;
112 } 112 }
113 } 113 }
114 114
115 // On second pass, only transparent object 115 // On second pass, only transparent objects are drawn...
116 if (fSecondPassForTransparency) { 116 if (fSecondPassForTransparency) {
117 if (!treatAsTransparent) { 117 if (!treatAsTransparent) {
118 return false; 118 return false;
119 } 119 }
120 } 120 }
121 121
122 // On third pass, only non-hidden markers 122 // On third pass, only non-hidden markers are drawn...
123 if (fThirdPassForNonHiddenMarkers) { 123 if (fThirdPassForNonHiddenMarkers) {
124 if (!treatAsNotHidden) { 124 if (!treatAsNotHidden) {
125 return false; 125 return false;
126 } 126 }
127 } 127 }
128 } // fThreePassCapable 128 } // fThreePassCapable
129 129
130 // Loads G4Atts for picking... 130 // Loads G4Atts for picking...
131 if (fpViewer->GetViewParameters().IsPicking( 131 if (fpViewer->GetViewParameters().IsPicking()) {
132 glLoadName(++fPickName); 132 glLoadName(++fPickName);
133 G4AttHolder* holder = new G4AttHolder; 133 G4AttHolder* holder = new G4AttHolder;
134 LoadAtts(visible, holder); 134 LoadAtts(visible, holder);
135 fPickMap[fPickName] = holder; 135 fPickMap[fPickName] = holder;
136 } 136 }
137 137
138 if (transparency_enabled) { 138 if (transparency_enabled) {
139 glColor4d(c.GetRed(),c.GetGreen(),c.GetBlu 139 glColor4d(c.GetRed(),c.GetGreen(),c.GetBlue(),c.GetAlpha());
140 } else { 140 } else {
141 glColor3d(c.GetRed(),c.GetGreen(),c.GetBlu 141 glColor3d(c.GetRed(),c.GetGreen(),c.GetBlue());
142 } 142 }
143 143
144 return true; 144 return true;
145 } 145 }
146 146
147 void G4OpenGLImmediateSceneHandler::AddPrimiti 147 void G4OpenGLImmediateSceneHandler::AddPrimitive (const G4Polyline& polyline)
148 { 148 {
149 G4bool furtherprocessing = AddPrimitivePream 149 G4bool furtherprocessing = AddPrimitivePreamble(polyline);
150 if (furtherprocessing) { 150 if (furtherprocessing) {
151 G4OpenGLSceneHandler::AddPrimitive(polylin 151 G4OpenGLSceneHandler::AddPrimitive(polyline);
152 } 152 }
153 } 153 }
154 154
155 void G4OpenGLImmediateSceneHandler::AddPrimiti 155 void G4OpenGLImmediateSceneHandler::AddPrimitive (const G4Polymarker& polymarker)
156 { 156 {
157 G4bool furtherprocessing = AddPrimitivePream 157 G4bool furtherprocessing = AddPrimitivePreamble(polymarker);
158 if (furtherprocessing) { 158 if (furtherprocessing) {
159 G4OpenGLSceneHandler::AddPrimitive(polymar 159 G4OpenGLSceneHandler::AddPrimitive(polymarker);
160 } 160 }
161 } 161 }
162 162
163 void G4OpenGLImmediateSceneHandler::AddPrimiti 163 void G4OpenGLImmediateSceneHandler::AddPrimitive (const G4Text& text)
164 { 164 {
165 // Note: colour is still handled in 165 // Note: colour is still handled in
166 // G4OpenGLSceneHandler::AddPrimitive(const 166 // G4OpenGLSceneHandler::AddPrimitive(const G4Text&).
167 G4bool furtherprocessing = AddPrimitivePream 167 G4bool furtherprocessing = AddPrimitivePreamble(text);
168 if (furtherprocessing) { 168 if (furtherprocessing) {
169 G4OpenGLSceneHandler::AddPrimitive(text); 169 G4OpenGLSceneHandler::AddPrimitive(text);
170 } 170 }
171 } 171 }
172 172
173 void G4OpenGLImmediateSceneHandler::AddPrimiti 173 void G4OpenGLImmediateSceneHandler::AddPrimitive (const G4Circle& circle)
174 { 174 {
175 G4bool furtherprocessing = AddPrimitivePream 175 G4bool furtherprocessing = AddPrimitivePreamble(circle);
176 if (furtherprocessing) { 176 if (furtherprocessing) {
177 G4OpenGLSceneHandler::AddPrimitive(circle) 177 G4OpenGLSceneHandler::AddPrimitive(circle);
178 } 178 }
179 } 179 }
180 180
181 void G4OpenGLImmediateSceneHandler::AddPrimiti 181 void G4OpenGLImmediateSceneHandler::AddPrimitive (const G4Square& square)
182 { 182 {
183 G4bool furtherprocessing = AddPrimitivePream 183 G4bool furtherprocessing = AddPrimitivePreamble(square);
184 if (furtherprocessing) { 184 if (furtherprocessing) {
185 G4OpenGLSceneHandler::AddPrimitive(square) 185 G4OpenGLSceneHandler::AddPrimitive(square);
186 } 186 }
187 } 187 }
188 188
189 void G4OpenGLImmediateSceneHandler::AddPrimiti 189 void G4OpenGLImmediateSceneHandler::AddPrimitive (const G4Polyhedron& polyhedron)
190 { 190 {
191 // Note: colour is still handled in 191 // Note: colour is still handled in
192 // G4OpenGLSceneHandler::AddPrimitive(const 192 // G4OpenGLSceneHandler::AddPrimitive(const G4Polyhedron&).
193 G4bool furtherprocessing = AddPrimitivePream 193 G4bool furtherprocessing = AddPrimitivePreamble(polyhedron);
194 if (furtherprocessing) { 194 if (furtherprocessing) {
195 G4OpenGLSceneHandler::AddPrimitive(polyhed 195 G4OpenGLSceneHandler::AddPrimitive(polyhedron);
196 } 196 }
197 } 197 }
198 198
199 void G4OpenGLImmediateSceneHandler::BeginPrimi 199 void G4OpenGLImmediateSceneHandler::BeginPrimitives
200 (const G4Transform3D& objectTransformation) 200 (const G4Transform3D& objectTransformation)
201 { 201 {
202 G4OpenGLSceneHandler::BeginPrimitives (objec 202 G4OpenGLSceneHandler::BeginPrimitives (objectTransformation);
203 203
204 G4OpenGLTransform3D oglt (objectTransformati 204 G4OpenGLTransform3D oglt (objectTransformation);
205 205
206 glPushMatrix(); 206 glPushMatrix();
207 207
208 /*************************** Check matrix. 208 /*************************** Check matrix.
209 const GLdouble* m = oglt.GetGLMatrix (); 209 const GLdouble* m = oglt.GetGLMatrix ();
210 G4cout << "G4OpenGLTransform3D matrix:"; 210 G4cout << "G4OpenGLTransform3D matrix:";
211 for (int i = 0; i < 16; i++) { 211 for (int i = 0; i < 16; i++) {
212 if ((i % 4) == 0) G4cout << '\n'; 212 if ((i % 4) == 0) G4cout << '\n';
213 G4cout << std::setw (15) << m[i]; 213 G4cout << std::setw (15) << m[i];
214 } 214 }
215 G4cout << G4endl; 215 G4cout << G4endl;
216 *****************************************/ 216 *****************************************/
217 217
218 glMultMatrixd (oglt.GetGLMatrix ()); 218 glMultMatrixd (oglt.GetGLMatrix ());
219 } 219 }
220 220
221 void G4OpenGLImmediateSceneHandler::EndPrimiti 221 void G4OpenGLImmediateSceneHandler::EndPrimitives ()
222 { 222 {
223 glPopMatrix(); 223 glPopMatrix();
224 224
225 // See all primitives immediately... At lea 225 // See all primitives immediately... At least soon...
226 ScaledFlush(); 226 ScaledFlush();
227 227
228 G4OpenGLSceneHandler::EndPrimitives (); 228 G4OpenGLSceneHandler::EndPrimitives ();
229 } 229 }
230 230
231 void G4OpenGLImmediateSceneHandler::BeginPrimi 231 void G4OpenGLImmediateSceneHandler::BeginPrimitives2D
232 (const G4Transform3D& objectTransformation) 232 (const G4Transform3D& objectTransformation)
233 { 233 {
234 G4OpenGLSceneHandler::BeginPrimitives2D(obje 234 G4OpenGLSceneHandler::BeginPrimitives2D(objectTransformation);
235 235
236 // Push current 3D world matrices and load i 236 // Push current 3D world matrices and load identity to define screen
237 // coordinates... 237 // coordinates...
238 glMatrixMode (GL_PROJECTION); 238 glMatrixMode (GL_PROJECTION);
239 glPushMatrix(); 239 glPushMatrix();
240 glLoadIdentity(); 240 glLoadIdentity();
241 G4OpenGLViewer* pViewer = dynamic_cast<G4Ope 241 G4OpenGLViewer* pViewer = dynamic_cast<G4OpenGLViewer*>(fpViewer);
242 if (pViewer) { 242 if (pViewer) {
243 pViewer->g4GlOrtho (-1., 1., -1., 1., -G4O 243 pViewer->g4GlOrtho (-1., 1., -1., 1., -G4OPENGL_FLT_BIG, G4OPENGL_FLT_BIG);
244 } 244 }
245 glMatrixMode (GL_MODELVIEW); 245 glMatrixMode (GL_MODELVIEW);
246 glPushMatrix(); 246 glPushMatrix();
247 glLoadIdentity(); 247 glLoadIdentity();
248 G4OpenGLTransform3D oglt (objectTransformati 248 G4OpenGLTransform3D oglt (objectTransformation);
249 glMultMatrixd (oglt.GetGLMatrix ()); 249 glMultMatrixd (oglt.GetGLMatrix ());
250 glDisable(GL_DEPTH_TEST); // But see parent 250 glDisable(GL_DEPTH_TEST); // But see parent scene handler!! In
251 glDisable (GL_LIGHTING); // some cases, we 251 glDisable (GL_LIGHTING); // some cases, we need to re-iterate this.
252 } 252 }
253 253
254 void G4OpenGLImmediateSceneHandler::EndPrimiti 254 void G4OpenGLImmediateSceneHandler::EndPrimitives2D()
255 { 255 {
256 // Pop current 3D world matrices back again. 256 // Pop current 3D world matrices back again...
257 glMatrixMode (GL_PROJECTION); 257 glMatrixMode (GL_PROJECTION);
258 glPopMatrix(); 258 glPopMatrix();
259 glMatrixMode (GL_MODELVIEW); 259 glMatrixMode (GL_MODELVIEW);
260 glPopMatrix(); 260 glPopMatrix();
261 261
262 // See all primitives immediately... At lea 262 // See all primitives immediately... At least soon...
263 ScaledFlush(); 263 ScaledFlush();
264 264
265 G4OpenGLSceneHandler::EndPrimitives2D (); 265 G4OpenGLSceneHandler::EndPrimitives2D ();
266 } 266 }
267 267
268 void G4OpenGLImmediateSceneHandler::BeginModel 268 void G4OpenGLImmediateSceneHandler::BeginModeling () {
269 G4VSceneHandler::BeginModeling(); 269 G4VSceneHandler::BeginModeling();
270 } 270 }
271 271
272 void G4OpenGLImmediateSceneHandler::EndModelin 272 void G4OpenGLImmediateSceneHandler::EndModeling () {
273 G4VSceneHandler::EndModeling (); 273 G4VSceneHandler::EndModeling ();
274 } 274 }
275 275
276 void G4OpenGLImmediateSceneHandler::ClearTrans 276 void G4OpenGLImmediateSceneHandler::ClearTransientStore ()
277 { 277 {
278 // Nothing to do except redraw the scene rea 278 // Nothing to do except redraw the scene ready for the next event.
279 if (fpViewer) { 279 if (fpViewer) {
280 fpViewer -> SetView (); 280 fpViewer -> SetView ();
281 fpViewer -> ClearView (); 281 fpViewer -> ClearView ();
282 fpViewer -> DrawView (); 282 fpViewer -> DrawView ();
283 } 283 }
284 } 284 }
285 285
286 G4int G4OpenGLImmediateSceneHandler::fSceneIdC 286 G4int G4OpenGLImmediateSceneHandler::fSceneIdCount = 0;
287 287