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7 * GROningen MAchine for Chemical Simulations
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33 * GROningen Mixture of Alchemy and Childrens' Stories
50 void m4_op(mat4 m,rvec x,vec4 v)
55 v[i]=m[XX][i]*x[XX]+m[YY][i]*x[YY]+m[ZZ][i]*x[ZZ]+m[WW][i];
70 void print_m4(FILE *fp,const char *s,mat4 A)
79 fprintf(fp,"%10.5f",A[i][j]);
85 void print_v4(FILE *fp,char *s,int dim,real *a)
92 fprintf(fp,"%10.5f",a[j]);
97 void mult_matrix(mat4 A, mat4 B, mat4 C)
102 for (j=0; j<N; j++) {
105 A[i][j]+=B[i][k]*C[k][j];
109 void rotate(int axis, real angle, mat4 A)
115 A[YY][YY] = cos(angle);
116 A[YY][ZZ] = -sin(angle);
117 A[ZZ][YY] = sin(angle);
118 A[ZZ][ZZ] = cos(angle);
121 A[XX][XX] = cos(angle);
122 A[XX][ZZ] = sin(angle);
123 A[ZZ][XX] = -sin(angle);
124 A[ZZ][ZZ] = cos(angle);
127 A[XX][XX] = cos(angle);
128 A[XX][YY] = -sin(angle);
129 A[YY][XX] = sin(angle);
130 A[YY][YY] = cos(angle);
133 gmx_fatal(FARGS,"Error: invalid axis: %d",axis);
137 void translate(real tx, real ty, real tz, mat4 A)
145 static void set_scale(t_3dview *view,real sx, real sy)
151 void calculate_view(t_3dview *view)
154 mat4 To,Te,T1,T2,T3,T4,T5,N1,D1,D2,D3,D4,D5;
161 l = sqrt(dx*dx+dy*dy+dz*dz);
162 r = sqrt(dx*dx+dy*dy);
164 print_v4(debug,"eye",N,view->eye);
165 printf("del: %10.5f%10.5f%10.5f l: %10.5f, r: %10.5f\n",dx,dy,dz,l,r);
168 gmx_fatal(FARGS,"Error: Zero Length Vector - No View Specified");
169 translate((real)(-view->origin[XX]),
170 (real)(-view->origin[YY]),(real)(-view->origin[ZZ]),To);
171 translate((real)(-view->eye[XX]),
172 (real)(-view->eye[YY]),(real)(-view->eye[ZZ]),Te);
175 T2[YY][YY]=0, T2[YY][ZZ]=-1, T2[ZZ][YY]=1, T2[ZZ][ZZ]=0;
179 T3[XX][XX]=-dy/r, T3[XX][ZZ]=dx/r, T3[ZZ][XX]=-dx/r, T3[ZZ][ZZ]=-dy/r;
182 T4[YY][YY]=r/l, T4[YY][ZZ]=dz/l, T4[ZZ][YY]=-dz/l, T4[ZZ][ZZ]=r/l;
188 /* N1[XX][XX]=4,N1[YY][YY]=4; */
190 mult_matrix(T1,To,view->Rot);
191 mult_matrix(D1,Te,T2);
192 mult_matrix(D2,T3,T4);
193 mult_matrix(D3,T5,N1);
194 mult_matrix(D4,T1,D1);
195 mult_matrix(D5,D2,D3);
197 mult_matrix(view->proj,D4,D5);
200 print_m4(debug,"T1",T1);
201 print_m4(debug,"T2",T2);
202 print_m4(debug,"T3",T3);
203 print_m4(debug,"T4",T4);
204 print_m4(debug,"T5",T5);
205 print_m4(debug,"N1",N1);
206 print_m4(debug,"Rot",view->Rot);
207 print_m4(debug,"Proj",view->proj);
211 gmx_bool zoom_3d(t_3dview *view,real fac)
218 for(i=0; (i<DIM); i++) {
224 bm=max(norm(view->box[XX]),max(norm(view->box[YY]),norm(view->box[ZZ])));
225 if (dr1*fac < 1.1*bm) /* Don't come to close */
229 for(i=0; (i<DIM); i++)
231 calculate_view(view);
235 void init_rotate_3d(t_3dview *view)
240 for(i=0; (i<DIM); i++) {
241 rotate(i, rot ,view->RotP[i]);
242 rotate(i,(real)(-rot),view->RotM[i]);
244 print_m4(debug,"RotP",view->RotP[i]);
245 print_m4(debug,"RotM",view->RotM[i]);
251 void rotate_3d(t_3dview *view,int axis,gmx_bool bPositive)
257 mult_matrix(m4,view->Rot,view->RotP[axis]);
259 mult_matrix(m4,view->Rot,view->RotM[axis]);
262 view->Rot[i][j]=m4[i][j];
264 calculate_view(view);
267 void translate_view(t_3dview *view,int axis,gmx_bool bPositive)
270 printf("Translate called\n");
273 view->origin[axis]+=view->box[axis][axis]/8;
275 view->origin[axis]-=view->box[axis][axis]/8;
276 calculate_view(view);
279 void reset_view(t_3dview *view)
284 printf("Reset view called\n");
286 set_scale(view,4.0,4.0);
287 clear_rvec(view->eye);
288 calc_box_center(view->ecenter,view->box,view->origin);
289 view->eye[ZZ]=3.0*max(view->box[XX][XX],view->box[YY][YY]);
291 view->eye[WW]=view->origin[WW]=0.0;
293 /* Initiate the matrix */
295 calculate_view(view);
297 init_rotate_3d(view);
300 t_3dview *init_view(matrix box)
307 /* Copy parameters into variables */
308 for(i=0; (i<DIM); i++)
309 for(j=0; (j<DIM); j++)
310 view->box[i][j]=box[i][j];
312 view->ecenter = ecenterDEF;