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25 //
26 //
27 //
28 //
29 // Andrew Walkden 16th April 1997
30 // G4OpenGLXmRotationCallbacks :
31 // Several callback functions used by
32 // elements of the control panel to
33 // rotate the view.
34
35 #include "G4OpenGLXmViewer.hh"
36
37 #include "G4PhysicalConstants.hh"
38 #include "G4Scene.hh"
39 #include "G4UImanager.hh"
40 #include "G4ios.hh"
41
42 void G4OpenGLXmViewer::theta_rotation_callback (Widget w,
43 XtPointer clientData,
44 XtPointer callData)
45 {
46 XmArrowButtonCallbackStruct *cbs = (XmArrowButtonCallbackStruct*) callData;
47 G4OpenGLXmViewer* pView = (G4OpenGLXmViewer*) clientData;
48
49 pView->rotate_right = get_boolean_userData (w);
50
51 if (cbs->reason == XmCR_ARM) {
52 rotate_in_theta (pView, NULL);
53 } else if (cbs->reason == XmCR_DISARM) {
54 XtRemoveTimeOut (pView->rotation_timer);
55 }
56 }
57
58 void G4OpenGLXmViewer::rotate_in_theta (XtPointer clientData,
59 XtIntervalId* timer_id)
60 {
61 //theta spin stuff here
62 G4OpenGLXmViewer* pView = (G4OpenGLXmViewer*) clientData;
63
64 if (pView->rotate_right) {
65 pView->rotateScene(1,0);
66 } else {
67 pView->rotateScene(-1,0);
68 }
69 /*
70 G4double delta_theta;
71
72 if (pView->fVP.GetLightsMoveWithCamera()) {
73 if (pView->rotate_right) {
74 delta_theta = -(pView->fRot_sens);
75 } else {
76 delta_theta = pView->fRot_sens;
77 }
78 } else {
79 if (pView->rotate_right) {
80 delta_theta = pView->fRot_sens;
81 } else {
82 delta_theta = -(pView->fRot_sens);
83 }
84 }
85 delta_theta *= deg;
86 // Rotates by fixed azimuthal angle delta_theta.
87
88 const G4Vector3D& vp = pView->fVP.GetViewpointDirection ().unit ();
89 const G4Vector3D& up = pView->fVP.GetUpVector ().unit ();
90 const G4Vector3D& zprime = up;
91 G4double cosalpha = up.dot (vp);
92 G4double sinalpha = std::sqrt (1. - std::pow (cosalpha, 2));
93 G4Vector3D yprime = (zprime.cross (vp)).unit ();
94 G4Vector3D xprime = yprime.cross (zprime);
95 // Projection of vp on plane perpendicular to up...
96 G4Vector3D a1 = sinalpha * xprime;
97 // Required new projection...
98 G4Vector3D a2 =
99 sinalpha * (std::cos (delta_theta) * xprime + std::sin (delta_theta) * yprime);
100 // Required Increment vector...
101 G4Vector3D delta = a2 - a1;
102 // So new viewpoint is...
103 G4Vector3D viewPoint = vp + delta;
104
105 pView->fVP.SetViewAndLights (viewPoint);
106 */
107
108 pView->SetView ();
109 pView->ClearView ();
110 pView->DrawView ();
111
112 pView->rotation_timer = XtAppAddTimeOut
113 (pView->app,
114 timer_id == NULL ? 500 : 1,
115 rotate_in_theta,
116 pView);
117 }
118
119 void G4OpenGLXmViewer::phi_rotation_callback (Widget w,
120 XtPointer clientData,
121 XtPointer callData)
122 {
123 XmArrowButtonCallbackStruct *cbs = (XmArrowButtonCallbackStruct*) callData;
124 G4OpenGLXmViewer* pView = (G4OpenGLXmViewer*) clientData;
125
126 pView->rotate_up = get_boolean_userData (w);
127
128 if (cbs->reason == XmCR_ARM) {
129 rotate_in_phi (pView, NULL);
130 } else if (cbs->reason == XmCR_DISARM) {
131 XtRemoveTimeOut (pView->rotation_timer);
132 }
133 }
134
135 void G4OpenGLXmViewer::rotate_in_phi (XtPointer clientData,
136 XtIntervalId* timer_id)
137 {
138 //phi spin stuff here
139 // G4double delta_alpha;
140 G4OpenGLXmViewer* pView = (G4OpenGLXmViewer*) clientData;
141
142 if (pView -> rotate_up) {
143 pView->rotateScene(0,-1);
144 } else {
145 pView->rotateScene(0,1);
146 }
147 /*
148 if (pView->fVP.GetLightsMoveWithCamera()) {
149 if (pView -> rotate_up) {
150 delta_alpha = -(pView->fRot_sens);
151 } else {
152 delta_alpha = pView->fRot_sens;
153 }
154 } else {
155 if (pView -> rotate_up) {
156 delta_alpha = pView->fRot_sens;
157 } else {
158 delta_alpha = -(pView->fRot_sens);
159 }
160 }
161
162 delta_alpha *= deg;
163
164 const G4Vector3D& vp = pView->fVP.GetViewpointDirection ().unit ();
165 const G4Vector3D& up = pView->fVP.GetUpVector ().unit ();
166
167 const G4Vector3D& xprime = vp;
168 G4Vector3D yprime = (up.cross(xprime)).unit();
169 G4Vector3D zprime = (xprime.cross(yprime)).unit();
170
171 G4Vector3D new_vp = std::cos(delta_alpha) * xprime + std::sin(delta_alpha) * zprime;
172
173 pView->fVP.SetViewAndLights (new_vp.unit());
174
175 if (pView->fVP.GetLightsMoveWithCamera()) {
176 G4Vector3D new_up = (new_vp.cross(yprime)).unit();
177 pView->fVP.SetUpVector(new_up);
178 }
179
180 */
181 pView->SetView ();
182 pView->ClearView ();
183 pView->DrawView ();
184
185 pView->rotation_timer = XtAppAddTimeOut
186 (pView->app,
187 timer_id == NULL ? 500 : 1,
188 rotate_in_phi,
189 pView);
190 }
191
192 void G4OpenGLXmViewer::set_rot_sens_callback (Widget w,
193 XtPointer clientData,
194 XtPointer callData)
195 {
196 XmScaleCallbackStruct *cbs = (XmScaleCallbackStruct*) callData;
197 G4OpenGLXmViewer* pView = (G4OpenGLXmViewer*) clientData;
198 short dp = -1;
199 G4float ten_to_the_dp = 10.;
200
201 XtVaGetValues (w,
202 XmNdecimalPoints, &dp,
203 NULL);
204
205 if (dp == 0) {
206 ten_to_the_dp = 1.;
207 } else if ( dp > 0) {
208 for (G4int i = 1; i < (G4int)dp; i++) {
209 ten_to_the_dp *= 10.;
210 }
211 } else {
212 G4Exception
213 ("G4OpenGLXmViewer::set_rot_sens_callback",
214 "opengl2004", FatalException,
215 "Bad value returned for dp in set_rot_sens_callback");
216 }
217
218 pView->fRot_sens = (G4float)(cbs->value) / ten_to_the_dp;
219 }
220
221 void G4OpenGLXmViewer::set_rot_subject_callback (Widget w,
222 XtPointer clientData,
223 XtPointer)
224 {
225 G4OpenGLXmViewer* pView = (G4OpenGLXmViewer*)clientData;
226
227 G4int choice = get_int_userData (w);
228
229 switch (choice) {
230 case 0:
231 {
232 pView->fVP.SetLightsMoveWithCamera (true);
233 break;
234 }
235 case 1:
236 {
237 pView->fVP.SetLightsMoveWithCamera (false);
238 break;
239 }
240 default:
241 {
242 G4Exception
243 ("G4OpenGLXmViewer::set_rot_subject_callback",
244 "opengl2005", FatalException,
245 "Unrecognised choice made in set_rot_subject_callback");
246 }
247 }
248 }
249
250 void G4OpenGLXmViewer::wobble_callback (Widget w,
251 XtPointer,
252 XtPointer)
253 {
254 G4OpenGLXmViewer* pView;
255
256 XtVaGetValues (w,
257 XmNuserData, &pView,
258 NULL);
259
260 pView->original_vp = pView->fVP.GetViewpointDirection();
261 pView->wobble_timer = XtAppAddTimeOut
262 (pView->app,
263 (long unsigned int) (1000. * (1. / pView->wob_sens)),
264 wobble_timer_callback,
265 pView);
266 }
267
268 void G4OpenGLXmViewer::wobble_timer_callback (XtPointer clientData,
269 XtIntervalId*)
270 {
271 G4OpenGLXmViewer* pView = (G4OpenGLXmViewer*)clientData;
272 const G4Vector3D& up = pView->fVP.GetUpVector();
273 G4Vector3D third_axis = up.cross(pView->original_vp);
274 G4double pi_div_by_ten = pi / 10.0;
275 G4Vector3D d_up = 0.1 * (std::sin ((G4double)pView->frameNo * pi_div_by_ten * 2.)) * up;
276 G4Vector3D d_third_axis = 0.1 * (std::sin ((G4double)pView->frameNo * (pi_div_by_ten))) * third_axis;
277
278 pView->fVP.SetViewAndLights (pView->original_vp + d_up + d_third_axis);
279
280 pView->SetView ();
281 pView->ClearView ();
282 pView->DrawView ();
283
284 if (pView->frameNo++ == 20) {
285 if (pView->wobble_timer) {
286 XtRemoveTimeOut (pView->wobble_timer);
287 pView->frameNo = 0;
288 pView->fVP.SetViewAndLights (pView->original_vp);
289 pView->SetView ();
290 pView->ClearView ();
291 pView->DrawView ();
292 }
293 } else {
294 pView->wobble_timer = XtAppAddTimeOut
295 (pView->app,
296 (long unsigned int) (1000. * (1. / pView->wob_sens)),
297 wobble_timer_callback,
298 pView);
299 }
300 }
301
302 void G4OpenGLXmViewer::reset_callback (Widget w,
303 XtPointer,
304 XtPointer)
305 {
306
307 G4OpenGLXmViewer* pView;
308
309 XtVaGetValues (w,
310 XmNuserData, &pView,
311 NULL);
312
313 pView->fVP.SetCurrentTargetPoint(G4Point3D());
314 pView->fVP.SetZoomFactor(1.0);
315 pView->fVP.SetDolly(0.0);
316 pView->SetView ();
317 pView->ClearView ();
318 pView->DrawView ();
319 pView->zoom_low = 0.1;
320 pView->zoom_high = 10.0;
321
322 }
323