Actual source code: ex2.c
2: static char help[] = "Demonstrates use of color map\n";
4: #include <petscsys.h>
5: #include <petscdraw.h>
7: int main(int argc,char **argv)
8: {
9: PetscDraw draw;
10: PetscMPIInt size,rank;
11: int x = 0,y = 0,width = 256,height = 256,i;
13: PetscInitialize(&argc,&argv,NULL,help);
14: PetscDrawCreate(PETSC_COMM_WORLD,0,"Title",x,y,width,height,&draw);
15: PetscDrawSetFromOptions(draw);
16: MPI_Comm_size(PETSC_COMM_WORLD,&size);
17: MPI_Comm_rank(PETSC_COMM_WORLD,&rank);
18: for (i=rank; i<height; i+=size) {
19: PetscReal y = ((PetscReal)i)/(height-1);
20: PetscDrawLine(draw,0.0,y,1.0,y,i%256);
21: }
22: PetscDrawFlush(draw);
23: PetscDrawPause(draw);
24: PetscDrawSave(draw);
25: PetscDrawDestroy(&draw);
26: PetscFinalize();
27: return 0;
28: }
30: /*TEST
32: build:
33: requires: x
35: test:
36: output_file: output/ex1_1.out
38: TEST*/