C++ (Cpp) rotation_between_vecs_to_mat3 Examples

Example #1

File: cloth.c Project: DrangPo/blender

void cloth_parallel_transport_hair_frame(float mat[3][3], const float dir_old[3], const float dir_new[3])
{
	float rot[3][3];
	
	/* rotation between segments */
	rotation_between_vecs_to_mat3(rot, dir_old, dir_new);
	
	/* rotate the frame */
	mul_m3_m3m3(mat, rot, mat);
}

Example #2

File: transform_snap.c Project: diekev/blender

void applyProject(TransInfo *t)
{
	/* XXX FLICKER IN OBJECT MODE */
	if ((t->tsnap.project) && activeSnap(t) && (t->flag & T_NO_PROJECT) == 0) {
		TransData *td = t->data;
		float tvec[3];
		float imat[4][4];
		int i;
	
		if (t->flag & (T_EDIT | T_POSE)) {
			Object *ob = t->obedit ? t->obedit : t->poseobj;
			invert_m4_m4(imat, ob->obmat);
		}

		for (i = 0; i < t->total; i++, td++) {
			float iloc[3], loc[3], no[3];
			float mval_fl[2];
			float dist_px = TRANSFORM_DIST_MAX_PX;
			
			if (td->flag & TD_NOACTION)
				break;
			
			if (td->flag & TD_SKIP)
				continue;

			if ((t->flag & T_PROP_EDIT) && (td->factor == 0.0f))
				continue;
			
			copy_v3_v3(iloc, td->loc);
			if (t->flag & (T_EDIT | T_POSE)) {
				Object *ob = t->obedit ? t->obedit : t->poseobj;
				mul_m4_v3(ob->obmat, iloc);
			}
			else if (t->flag & T_OBJECT) {
				/* TODO(sergey): Ideally force update is not needed here. */
				td->ob->recalc |= OB_RECALC_OB | OB_RECALC_DATA | OB_RECALC_TIME;
				BKE_object_handle_update(G.main->eval_ctx, t->scene, td->ob);
				copy_v3_v3(iloc, td->ob->obmat[3]);
			}
			
			if (ED_view3d_project_float_global(t->ar, iloc, mval_fl, V3D_PROJ_TEST_NOP) == V3D_PROJ_RET_OK) {
				if (snapObjectsTransform(
				        t, mval_fl, &dist_px,
				        loc, no))
				{
//					if (t->flag & (T_EDIT|T_POSE)) {
//						mul_m4_v3(imat, loc);
//					}

					sub_v3_v3v3(tvec, loc, iloc);

					mul_m3_v3(td->smtx, tvec);

					add_v3_v3(td->loc, tvec);

					if (t->tsnap.align && (t->flag & T_OBJECT)) {
						/* handle alignment as well */
						const float *original_normal;
						float mat[3][3];

						/* In pose mode, we want to align normals with Y axis of bones... */
						original_normal = td->axismtx[2];

						rotation_between_vecs_to_mat3(mat, original_normal, no);

						transform_data_ext_rotate(td, mat, true);

						/* TODO support constraints for rotation too? see ElementRotation */
					}
				}
			}
			
			//XXX constraintTransLim(t, td);
		}
	}
}