xref: /petsc/src/sys/classes/draw/interface/dcoor.c (revision 6b867d5ac32ed0c728f185df9d084acdf26f70bf)

/*
       Provides the calling sequences for all the basic PetscDraw routines.
*/
#include <petsc/private/drawimpl.h>  /*I "petscdraw.h" I*/

/*@
   PetscDrawSetCoordinates - Sets the application coordinates of the corners of
   the window (or page).

   Not collective

   Input Parameters:
+  draw - the drawing object
-  xl,yl,xr,yr - the coordinates of the lower left corner and upper
                 right corner of the drawing region.

   Level: advanced

.seealso: PetscDrawGetCoordinates()

@*/
PetscErrorCode  PetscDrawSetCoordinates(PetscDraw draw,PetscReal xl,PetscReal yl,PetscReal xr,PetscReal yr)
{
  PetscErrorCode ierr;

  PetscFunctionBegin;
  PetscValidHeaderSpecific(draw,PETSC_DRAW_CLASSID,1);
  draw->coor_xl = xl; draw->coor_yl = yl;
  draw->coor_xr = xr; draw->coor_yr = yr;
  if (draw->ops->setcoordinates) {
    ierr = (*draw->ops->setcoordinates)(draw,xl,yl,xr,yr);CHKERRQ(ierr);
  }
  PetscFunctionReturn(0);
}

/*@
   PetscDrawGetCoordinates - Gets the application coordinates of the corners of
   the window (or page).

   Not Collective

   Input Parameter:
.  draw - the drawing object

   Level: advanced

   Output Parameters:
+  xl - the horizontal coordinate of the lower left corner of the drawing region.
.  yl - the vertical coordinate of the lower left corner of the drawing region.
.  xr - the horizontal coordinate of the upper right corner of the drawing region.
-  yr - the vertical coordinate of the upper right corner of the drawing region.

.seealso: PetscDrawSetCoordinates()

@*/
PetscErrorCode  PetscDrawGetCoordinates(PetscDraw draw,PetscReal *xl,PetscReal *yl,PetscReal *xr,PetscReal *yr)
{
  PetscFunctionBegin;
  PetscValidHeaderSpecific(draw,PETSC_DRAW_CLASSID,1);
  PetscValidRealPointer(xl,2);
  PetscValidRealPointer(yl,3);
  PetscValidRealPointer(xr,4);
  PetscValidRealPointer(yr,5);
  *xl = draw->coor_xl; *yl = draw->coor_yl;
  *xr = draw->coor_xr; *yr = draw->coor_yr;
  PetscFunctionReturn(0);
}