1c4762a1bSJed Brown 2c4762a1bSJed Brown static char help[] = "Demonstrates use of color map\n"; 3c4762a1bSJed Brown 4c4762a1bSJed Brown #include <petscsys.h> 5c4762a1bSJed Brown #include <petscdraw.h> 6c4762a1bSJed Brown 7*d71ae5a4SJacob Faibussowitsch int main(int argc, char **argv) 8*d71ae5a4SJacob Faibussowitsch { 9c4762a1bSJed Brown PetscDraw draw; 10c4762a1bSJed Brown PetscMPIInt size, rank; 11c4762a1bSJed Brown int x = 0, y = 0, width = 256, height = 256, i; 12c4762a1bSJed Brown 13327415f7SBarry Smith PetscFunctionBeginUser; 149566063dSJacob Faibussowitsch PetscCall(PetscInitialize(&argc, &argv, NULL, help)); 159566063dSJacob Faibussowitsch PetscCall(PetscDrawCreate(PETSC_COMM_WORLD, 0, "Title", x, y, width, height, &draw)); 169566063dSJacob Faibussowitsch PetscCall(PetscDrawSetFromOptions(draw)); 179566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_size(PETSC_COMM_WORLD, &size)); 189566063dSJacob Faibussowitsch PetscCallMPI(MPI_Comm_rank(PETSC_COMM_WORLD, &rank)); 19c4762a1bSJed Brown for (i = rank; i < height; i += size) { 20c4762a1bSJed Brown PetscReal y = ((PetscReal)i) / (height - 1); 219566063dSJacob Faibussowitsch PetscCall(PetscDrawLine(draw, 0.0, y, 1.0, y, i % 256)); 22c4762a1bSJed Brown } 239566063dSJacob Faibussowitsch PetscCall(PetscDrawFlush(draw)); 249566063dSJacob Faibussowitsch PetscCall(PetscDrawPause(draw)); 259566063dSJacob Faibussowitsch PetscCall(PetscDrawSave(draw)); 269566063dSJacob Faibussowitsch PetscCall(PetscDrawDestroy(&draw)); 279566063dSJacob Faibussowitsch PetscCall(PetscFinalize()); 28b122ec5aSJacob Faibussowitsch return 0; 29c4762a1bSJed Brown } 30c4762a1bSJed Brown 31c4762a1bSJed Brown /*TEST 32c4762a1bSJed Brown 33c4762a1bSJed Brown build: 34c4762a1bSJed Brown requires: x 35c4762a1bSJed Brown 36c4762a1bSJed Brown test: 37c4762a1bSJed Brown output_file: output/ex1_1.out 38c4762a1bSJed Brown 39c4762a1bSJed Brown TEST*/ 40