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52 void m4_op(mat4 m, rvec x, vec4 v)
56 for (i = 0; (i < N); i++)
58 v[i] = m[XX][i]*x[XX]+m[YY][i]*x[YY]+m[ZZ][i]*x[ZZ]+m[WW][i];
66 for (i = 0; (i < N); i++)
68 for (j = 0; (j < N); j++)
82 void print_m4(FILE *fp, const char *s, mat4 A)
88 fprintf(fp, "%s: ", s);
89 for (i = 0; i < N; i++)
92 for (j = 0; j < N; j++)
94 fprintf(fp, "%10.5f", A[i][j]);
101 void print_v4(FILE *fp, char *s, int dim, real *a)
107 fprintf(fp, "%s: ", s);
108 for (j = 0; j < dim; j++)
110 fprintf(fp, "%10.5f", a[j]);
116 void mult_matrix(mat4 A, mat4 B, mat4 C)
120 for (i = 0; i < N; i++)
122 for (j = 0; j < N; j++)
125 for (k = 0; (k < N); k++)
127 A[i][j] += B[i][k]*C[k][j];
133 void rotate(int axis, real angle, mat4 A)
140 A[YY][YY] = cos(angle);
141 A[YY][ZZ] = -sin(angle);
142 A[ZZ][YY] = sin(angle);
143 A[ZZ][ZZ] = cos(angle);
146 A[XX][XX] = cos(angle);
147 A[XX][ZZ] = sin(angle);
148 A[ZZ][XX] = -sin(angle);
149 A[ZZ][ZZ] = cos(angle);
152 A[XX][XX] = cos(angle);
153 A[XX][YY] = -sin(angle);
154 A[YY][XX] = sin(angle);
155 A[YY][YY] = cos(angle);
158 gmx_fatal(FARGS, "Error: invalid axis: %d", axis);
162 void translate(real tx, real ty, real tz, mat4 A)
170 static void set_scale(t_3dview *view, real sx, real sy)
176 void calculate_view(t_3dview *view)
179 mat4 To, Te, T1, T2, T3, T4, T5, N1, D1, D2, D3, D4, D5;
180 real dx, dy, dz, l, r;
186 l = sqrt(dx*dx+dy*dy+dz*dz);
187 r = sqrt(dx*dx+dy*dy);
189 print_v4(debug, "eye", N, view->eye);
190 printf("del: %10.5f%10.5f%10.5f l: %10.5f, r: %10.5f\n", dx, dy, dz, l, r);
194 gmx_fatal(FARGS, "Error: Zero Length Vector - No View Specified");
196 translate((real)(-view->origin[XX]),
197 (real)(-view->origin[YY]), (real)(-view->origin[ZZ]), To);
198 translate((real)(-view->eye[XX]),
199 (real)(-view->eye[YY]), (real)(-view->eye[ZZ]), Te);
202 T2[YY][YY] = 0, T2[YY][ZZ] = -1, T2[ZZ][YY] = 1, T2[ZZ][ZZ] = 0;
207 T3[XX][XX] = -dy/r, T3[XX][ZZ] = dx/r, T3[ZZ][XX] = -dx/r, T3[ZZ][ZZ] = -dy/r;
211 T4[YY][YY] = r/l, T4[YY][ZZ] = dz/l, T4[ZZ][YY] = -dz/l, T4[ZZ][ZZ] = r/l;
217 /* N1[XX][XX]=4,N1[YY][YY]=4; */
219 mult_matrix(T1, To, view->Rot);
220 mult_matrix(D1, Te, T2);
221 mult_matrix(D2, T3, T4);
222 mult_matrix(D3, T5, N1);
223 mult_matrix(D4, T1, D1);
224 mult_matrix(D5, D2, D3);
226 mult_matrix(view->proj, D4, D5);
229 print_m4(debug, "T1", T1);
230 print_m4(debug, "T2", T2);
231 print_m4(debug, "T3", T3);
232 print_m4(debug, "T4", T4);
233 print_m4(debug, "T5", T5);
234 print_m4(debug, "N1", N1);
235 print_m4(debug, "Rot", view->Rot);
236 print_m4(debug, "Proj", view->proj);
240 gmx_bool zoom_3d(t_3dview *view, real fac)
247 for (i = 0; (i < DIM); i++)
255 bm = max(norm(view->box[XX]), max(norm(view->box[YY]), norm(view->box[ZZ])));
256 if (dr1*fac < 1.1*bm) /* Don't come to close */
262 for (i = 0; (i < DIM); i++)
266 calculate_view(view);
270 void init_rotate_3d(t_3dview *view)
272 real rot = DEG2RAD*15;
275 for (i = 0; (i < DIM); i++)
277 rotate(i, rot, view->RotP[i]);
278 rotate(i, (real)(-rot), view->RotM[i]);
280 print_m4(debug, "RotP", view->RotP[i]);
281 print_m4(debug, "RotM", view->RotM[i]);
287 void rotate_3d(t_3dview *view, int axis, gmx_bool bPositive)
294 mult_matrix(m4, view->Rot, view->RotP[axis]);
298 mult_matrix(m4, view->Rot, view->RotM[axis]);
300 for (i = 0; (i < N); i++)
302 for (j = 0; (j < N); j++)
304 view->Rot[i][j] = m4[i][j];
308 calculate_view(view);
311 void translate_view(t_3dview *view, int axis, gmx_bool bPositive)
314 printf("Translate called\n");
318 view->origin[axis] += view->box[axis][axis]/8;
322 view->origin[axis] -= view->box[axis][axis]/8;
324 calculate_view(view);
327 void reset_view(t_3dview *view)
332 printf("Reset view called\n");
334 set_scale(view, 4.0, 4.0);
335 clear_rvec(view->eye);
336 calc_box_center(view->ecenter, view->box, view->origin);
337 view->eye[ZZ] = 3.0*max(view->box[XX][XX], view->box[YY][YY]);
339 view->eye[WW] = view->origin[WW] = 0.0;
341 /* Initiate the matrix */
343 calculate_view(view);
345 init_rotate_3d(view);
348 t_3dview *init_view(matrix box)
355 /* Copy parameters into variables */
356 for (i = 0; (i < DIM); i++)
358 for (j = 0; (j < DIM); j++)
360 view->box[i][j] = box[i][j];
364 view->ecenter = ecenterDEF;