1 /* -*- Mode: C++; c-basic-offset:2 ; indent-tabs-mode:nil ; -*- */ 2 3 static char help[] = "Test VTK Rectilinear grid (.vtr) viewer support\n\n"; 4 5 #include <petscdm.h> 6 #include <petscdmda.h> 7 8 /* 9 Write 3D DMDA vector with coordinates in VTK VTR format 10 11 */ 12 PetscErrorCode test_3d(const char filename[]) 13 { 14 MPI_Comm comm = MPI_COMM_WORLD; 15 const PetscInt M=10, N=15, P=30, dof=1, sw=1; 16 const PetscScalar Lx=1.0, Ly=1.0, Lz=1.0; 17 DM da; 18 Vec v; 19 PetscViewer view; 20 DMDALocalInfo info; 21 PetscScalar ***va; 22 PetscInt i,j,k; 23 PetscErrorCode ierr; 24 25 ierr = DMDACreate3d(comm,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DMDA_STENCIL_STAR, M,N,P,PETSC_DECIDE,PETSC_DECIDE,PETSC_DECIDE,dof,sw,NULL,NULL,NULL,&da);CHKERRQ(ierr); 26 ierr = DMSetFromOptions(da);CHKERRQ(ierr); 27 ierr = DMSetUp(da);CHKERRQ(ierr); 28 29 ierr = DMDASetUniformCoordinates(da,0.0,Lx,0.0,Ly,0.0,Lz);CHKERRQ(ierr); 30 ierr = DMDAGetLocalInfo(da,&info);CHKERRQ(ierr); 31 ierr = DMCreateGlobalVector(da,&v);CHKERRQ(ierr); 32 ierr = DMDAVecGetArray(da,v,&va);CHKERRQ(ierr); 33 for (k=info.zs; k<info.zs+info.zm; k++) { 34 for (j=info.ys; j<info.ys+info.ym; j++) { 35 for (i=info.xs; i<info.xs+info.xm; i++) { 36 PetscScalar x = (Lx*i)/M; 37 PetscScalar y = (Ly*j)/N; 38 PetscScalar z = (Lz*k)/P; 39 va[k][j][i] = PetscPowScalarInt(x-0.5*Lx,2)+PetscPowScalarInt(y-0.5*Ly,2)+PetscPowScalarInt(z-0.5*Lz,2); 40 } 41 } 42 } 43 ierr = DMDAVecRestoreArray(da,v,&va);CHKERRQ(ierr); 44 ierr = PetscViewerVTKOpen(comm,filename,FILE_MODE_WRITE,&view);CHKERRQ(ierr); 45 ierr = VecView(v,view);CHKERRQ(ierr); 46 ierr = PetscViewerDestroy(&view);CHKERRQ(ierr); 47 ierr = VecDestroy(&v);CHKERRQ(ierr); 48 ierr = DMDestroy(&da);CHKERRQ(ierr); 49 return 0; 50 } 51 52 /* 53 Write 2D DMDA vector with coordinates in VTK VTR format 54 55 */ 56 PetscErrorCode test_2d(const char filename[]) 57 { 58 MPI_Comm comm = MPI_COMM_WORLD; 59 const PetscInt M=10, N=20, dof=1, sw=1; 60 const PetscScalar Lx=1.0, Ly=1.0, Lz=1.0; 61 DM da; 62 Vec v; 63 PetscViewer view; 64 DMDALocalInfo info; 65 PetscScalar **va; 66 PetscInt i,j; 67 PetscErrorCode ierr; 68 69 ierr = DMDACreate2d(comm,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DMDA_STENCIL_STAR, M,N,PETSC_DECIDE,PETSC_DECIDE,dof,sw,NULL,NULL,&da);CHKERRQ(ierr); 70 ierr = DMSetFromOptions(da);CHKERRQ(ierr); 71 ierr = DMSetUp(da);CHKERRQ(ierr); 72 ierr = DMDASetUniformCoordinates(da,0.0,Lx,0.0,Ly,0.0,Lz);CHKERRQ(ierr); 73 ierr = DMDAGetLocalInfo(da,&info);CHKERRQ(ierr); 74 ierr = DMCreateGlobalVector(da,&v);CHKERRQ(ierr); 75 ierr = DMDAVecGetArray(da,v,&va);CHKERRQ(ierr); 76 for (j=info.ys; j<info.ys+info.ym; j++) { 77 for (i=info.xs; i<info.xs+info.xm; i++) { 78 PetscScalar x = (Lx*i)/M; 79 PetscScalar y = (Ly*j)/N; 80 va[j][i] = PetscPowScalarInt(x-0.5*Lx,2)+PetscPowScalarInt(y-0.5*Ly,2); 81 } 82 } 83 ierr = DMDAVecRestoreArray(da,v,&va);CHKERRQ(ierr); 84 ierr = PetscViewerVTKOpen(comm,filename,FILE_MODE_WRITE,&view);CHKERRQ(ierr); 85 ierr = VecView(v,view);CHKERRQ(ierr); 86 ierr = PetscViewerDestroy(&view);CHKERRQ(ierr); 87 ierr = VecDestroy(&v);CHKERRQ(ierr); 88 ierr = DMDestroy(&da);CHKERRQ(ierr); 89 return 0; 90 } 91 92 /* 93 Write 2D DMDA vector without coordinates in VTK VTR format 94 95 */ 96 PetscErrorCode test_2d_nocoord(const char filename[]) 97 { 98 MPI_Comm comm = MPI_COMM_WORLD; 99 const PetscInt M=10, N=20, dof=1, sw=1; 100 const PetscScalar Lx=1.0, Ly=1.0; 101 DM da; 102 Vec v; 103 PetscViewer view; 104 DMDALocalInfo info; 105 PetscScalar **va; 106 PetscInt i,j; 107 PetscErrorCode ierr; 108 109 ierr = DMDACreate2d(comm,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DMDA_STENCIL_STAR,M,N,PETSC_DECIDE,PETSC_DECIDE,dof,sw,NULL,NULL,&da);CHKERRQ(ierr); 110 ierr = DMSetFromOptions(da);CHKERRQ(ierr); 111 ierr = DMSetUp(da);CHKERRQ(ierr); 112 ierr = DMDAGetLocalInfo(da,&info);CHKERRQ(ierr); 113 ierr = DMCreateGlobalVector(da,&v);CHKERRQ(ierr); 114 ierr = DMDAVecGetArray(da,v,&va);CHKERRQ(ierr); 115 for (j=info.ys; j<info.ys+info.ym; j++) { 116 for (i=info.xs; i<info.xs+info.xm; i++) { 117 PetscScalar x = (Lx*i)/M; 118 PetscScalar y = (Ly*j)/N; 119 va[j][i] = PetscPowScalarInt(x-0.5*Lx,2)+PetscPowScalarInt(y-0.5*Ly,2); 120 } 121 } 122 ierr = DMDAVecRestoreArray(da,v,&va);CHKERRQ(ierr); 123 ierr = PetscViewerVTKOpen(comm,filename,FILE_MODE_WRITE,&view);CHKERRQ(ierr); 124 ierr = VecView(v,view);CHKERRQ(ierr); 125 ierr = PetscViewerDestroy(&view);CHKERRQ(ierr); 126 ierr = VecDestroy(&v);CHKERRQ(ierr); 127 ierr = DMDestroy(&da);CHKERRQ(ierr); 128 return 0; 129 } 130 131 /* 132 Write 3D DMDA vector without coordinates in VTK VTR format 133 134 */ 135 PetscErrorCode test_3d_nocoord(const char filename[]) 136 { 137 MPI_Comm comm = MPI_COMM_WORLD; 138 const PetscInt M=10, N=20, P=30, dof=1, sw=1; 139 const PetscScalar Lx=1.0, Ly=1.0, Lz=1.0; 140 DM da; 141 Vec v; 142 PetscViewer view; 143 DMDALocalInfo info; 144 PetscScalar ***va; 145 PetscInt i,j,k; 146 PetscErrorCode ierr; 147 148 ierr = DMDACreate3d(comm,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DM_BOUNDARY_NONE,DMDA_STENCIL_STAR, M,N,P,PETSC_DECIDE,PETSC_DECIDE,PETSC_DECIDE,dof,sw,NULL,NULL,NULL,&da);CHKERRQ(ierr); 149 ierr = DMSetFromOptions(da);CHKERRQ(ierr); 150 ierr = DMSetUp(da);CHKERRQ(ierr); 151 152 ierr = DMDAGetLocalInfo(da,&info);CHKERRQ(ierr); 153 ierr = DMCreateGlobalVector(da,&v);CHKERRQ(ierr); 154 ierr = DMDAVecGetArray(da,v,&va);CHKERRQ(ierr); 155 for (k=info.zs; k<info.zs+info.zm; k++) { 156 for (j=info.ys; j<info.ys+info.ym; j++) { 157 for (i=info.xs; i<info.xs+info.xm; i++) { 158 PetscScalar x = (Lx*i)/M; 159 PetscScalar y = (Ly*j)/N; 160 PetscScalar z = (Lz*k)/P; 161 va[k][j][i] = PetscPowScalarInt(x-0.5*Lx,2)+PetscPowScalarInt(y-0.5*Ly,2)+PetscPowScalarInt(z-0.5*Lz,2); 162 } 163 } 164 } 165 ierr = DMDAVecRestoreArray(da,v,&va);CHKERRQ(ierr); 166 ierr = PetscViewerVTKOpen(comm,filename,FILE_MODE_WRITE,&view);CHKERRQ(ierr); 167 ierr = VecView(v,view);CHKERRQ(ierr); 168 ierr = PetscViewerDestroy(&view);CHKERRQ(ierr); 169 ierr = VecDestroy(&v);CHKERRQ(ierr); 170 ierr = DMDestroy(&da);CHKERRQ(ierr); 171 return 0; 172 } 173 174 int main(int argc, char *argv[]) 175 { 176 PetscErrorCode ierr; 177 178 ierr = PetscInitialize(&argc,&argv,0,help);if (ierr) return ierr; 179 ierr = test_3d("3d.vtr");CHKERRQ(ierr); 180 ierr = test_2d("2d.vtr");CHKERRQ(ierr); 181 ierr = test_2d_nocoord("2d_nocoord.vtr");CHKERRQ(ierr); 182 ierr = test_3d_nocoord("3d_nocoord.vtr");CHKERRQ(ierr); 183 ierr = PetscFinalize(); 184 return ierr; 185 } 186 187 /*TEST 188 189 build: 190 requires: !complex 191 192 test: 193 nsize: 2 194 195 TEST*/ 196