//=========================================================================== // SISL - SINTEF Spline Library, version 4.5.0. // Definition and interrogation of NURBS curves and surfaces. // // Copyright (C) 2000-2005, 2010 SINTEF ICT, Applied Mathematics, Norway. // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License // as published by the Free Software Foundation version 2 of the License. // // This program 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 General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., // 59 Temple Place - Suite 330, // Boston, MA 02111-1307, USA. // // Contact information: E-mail: tor.dokken@sintef.no // SINTEF ICT, Department of Applied Mathematics, // P.O. Box 124 Blindern, // 0314 Oslo, Norway. // // Other licenses are also available for this software, notably licenses // for: // - Building commercial software. // - Building software whose source code you wish to keep private. //=========================================================================== 00271 #ifndef QTMODE 00272 glutMotionFunc(MouseRotate); 00273 #else 00274 // 030917: setting global variable so that new qt event handler 00275 // knows what to do. 00276 extern bool enableMouseRotation; 00277 enableMouseRotation=true; 00278 #endif 00279 break; 00280 case GLUT_MIDDLE_BUTTON: 00281 #ifndef QTMODE 00282 glutMotionFunc(MouseZoom); 00283 #else 00284 // 030918: setting global variable so that new qt event handler 00285 // knows what to do. 00286 extern bool enableMouseZoom; 00287 enableMouseZoom=true; 00288 #endif 00289 break; 00290 case GLUT_RIGHT_BUTTON: 00291 #ifndef QTMODE 00292 glutMotionFunc(MouseTranslate); 00293 #else 00294 // 030918: setting global variable so that new qt event handler 00295 // knows what to do. 00296 extern bool enableMouseTranslate; 00297 enableMouseTranslate=true; 00298 #endif 00299 break; 00300 } 00301 } 00302 00303 if (state==GLUT_UP) 00304 { 00305 00306 #ifdef MIDDLE_EMU 00307 if (butt==GLUT_LEFT_BUTTON) 00308 left_down=0; 00309 if (butt==GLUT_RIGHT_BUTTON) 00310 right_down=0; 00311 #endif 00312 #ifdef QTMODE 00313 extern bool enableMouseRotation, enableMouseZoom, enableMouseTranslate; 00314 enableMouseRotation=false; 00315 enableMouseZoom=false; 00316 enableMouseTranslate=false; 00317 #endif 00318 00319 // 00320 // 020410: Introduced 'spin_speed', was 1 before, setting to 2. 00321 // There seems to be some confusion here as to whether 00322 // the ?rot-variables are ints or floats?! 00323 // 040220: Reducing to 1, seems to be very unwieldy with the new 00324 // GF4 card...(?!) 00325 // 040505: Nå med fx5900, 1.0 ser ut til å være alt for mye for 00326 // endel bview2-greier. 00327 // 00328 //const double spin_speed=2.0; 00329 //const double spin_speed=1.0; 00330 const double spin_speed=0.1; 00331 00332 // 00333 // 991123: This was a stupid thing to do! We don't need to 00334 // disable this one! It's only active while the button 00335 // is pressed down, anyway! 00336 // 00337 // glutMotionFunc(MouseDummy); 00338 if ((butt==GLUT_LEFT_BUTTON) && 00339 ((x-last_x0)*(x-last_x0)+(y-last_y0)*(y-last_y0)>4)) 00340 { 00341 if (!transversal_rotation(x, y, last_x0, last_y0)) 00342 { 00343 xrot=(y-last_y0)*spin_speed; 00344 yrot=(x-last_x0)*spin_speed; 00345 /* zrot=0;*/ 00346 } 00347 else 00348 { 00349 int s; 00350 int viewp[4]; 00351 00352 glGetIntegerv(GL_VIEWPORT, viewp); 00353 if (atan2(y-(viewp[1]+viewp[3])*0.5, 00354 x-(viewp[0]+viewp[2])*0.5)> 00355 atan2(last_y0-(viewp[1]+viewp[3])*0.5, 00356 last_x0-(viewp[0]+viewp[2])*0.5)) 00357 s=-1; 00358 else 00359 s=1; 00360 00361 /* xrot=0; 00362 yrot=0;*/ 00363 zrot=(s*(int)(sqrt((double)(SQR(y-last_y0)+SQR(x-last_x0))))* 00364 spin_speed); 00365 } 00366 } 00367 } 00368 00369 /* 00370 printf("butt=%d state=%d x=%d y=%d " 00371 "last_x=%d last_y=%d last_x=%d last_y=%d\n", 00372 butt, state, x, y, last_x, last_y, last_x0, last_y0); 00373 #ifdef MIDDLE_EMU 00374 // printf("Left down=%d, right down=%d\n", left_down, right_down); 00375 #endif 00376 puts(" "); 00377 */ 00378 draw_cursor(x, y); 00379 }

void MouseRotate	(	int	x,
		int	y
	)

Definition at line 140 of file mouse.cpp.

References draw_cursor(), last_x, last_x0, last_y, last_y0, mouse_movement, rotate(), SQR, and transversal_rotation().

Referenced by main(), and Mouse().

00141 {
00142   int viewp[4];
00143   //const double sensitiveness=0.1;
00144   // 030129: Reducing sensitivity slightly.
00145   //const double sensitiveness=0.05;
00146   // 030302: Reducing sensitivity slightly more, for demo.
00147   const double sensitiveness=0.02;
00148 
00149   mouse_movement = mouse_movement || ((x!=last_x) || (y!=last_y));
00150 
00151   //puts("MouseRotate");
00152   glGetIntegerv(GL_VIEWPORT, viewp);
00153 
00154 draw_cursor(x, y);
00155 
00156   if (!transversal_rotation(x, y, last_x, last_y))
00157     rotate((x-last_x)*sensitiveness, (y-last_y)*sensitiveness, 0.0);
00158   else
00159     {
00160       int s;
00161 
00162       if (atan2(y-(viewp[1]+viewp[3])*0.5,
00163                 x-(viewp[0]+viewp[2])*0.5)>
00164           atan2(last_y-(viewp[1]+viewp[3])*0.5,
00165                 last_x-(viewp[0]+viewp[2])*0.5))
00166         s=-1;
00167       else
00168         s=1;
00169       
00170       rotate(0.0, 0.0,
00171              s*sqrt((double)(SQR(x-last_x)+SQR(y-last_y)))*sensitiveness);
00172     }
00173   
00174   last_x0=last_x;
00175   last_y0=last_y;
00176   last_x=x;
00177   last_y=y;
00178 }

void MouseTranslate	(	int	x,
		int	y
	)

Definition at line 198 of file mouse.cpp.

References draw_cursor(), last_x, last_y, translate(), xtrans, ytrans, and ztrans.

Referenced by Mouse().

00199 {
00200   translate(xtrans+(x-last_x)*0.01, ytrans-(y-last_y)*0.01, ztrans);
00201   last_x=x;
00202   last_y=y;
00203 draw_cursor(x, y);
00204 }

void MouseZoom	(	int	x,
		int	y
	)

Definition at line 185 of file mouse.cpp.

References draw_cursor(), last_x, last_y, and scale().

Referenced by Mouse().

00186 {
00187   scale(1.0+(y-last_y)*0.01, 1.0+(y-last_y)*0.01, 1.0+(y-last_y)*0.01);
00188   last_x=x;
00189   last_y=y;
00190 draw_cursor(x, y);
00191 }

int transversal_rotation	(	int	x,
		int	y,
		int	last_xx,
		int	last_yy
	)

Definition at line 104 of file mouse.cpp.

References allow_zrot, PI, and SQR.

Referenced by Mouse(), and MouseRotate().

00105 {
00106   int viewp[4];
00107 
00108   glGetIntegerv(GL_VIEWPORT, viewp);
00109   if ((fabs(((x-last_xx)*(x-(viewp[0]+viewp[2])*0.5)+
00110              (y-last_yy)*(y-(viewp[1]+viewp[3])*0.5))/
00111             sqrt((double)(SQR(x-last_xx)+SQR(y-last_yy)))/
00112             sqrt((double)(SQR(x-(viewp[0]+viewp[2])*0.5)+
00113                           SQR(y-(viewp[1]+viewp[3])*0.5)))) >
00114        cos(50.0/180.0*PI)) ||
00115       (sqrt((x-(viewp[0]+viewp[2])*0.5)*(x-(viewp[0]+viewp[2])*0.5)+
00116             (y-(viewp[1]+viewp[3])*0.5)*(y-(viewp[1]+viewp[3])*0.5)) <
00117        0.2*sqrt((double)SQR(viewp[2]-viewp[0])+SQR(viewp[3]-viewp[1]))) ||
00118       (!allow_zrot))
00119     {
00120       /* puts("radielt");*/
00121       return 0;
00122     }
00123   else
00124     {
00125       /* puts("transversalt");*/
00126       return 1;
00127     }
00128   // draw_cursor(x, y);
00129 }