Actual source code: dpoints.c

petsc-3.5.1 2014-08-06
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  2: /*
  3:        Provides the calling sequences for all the basic PetscDraw routines.
  4: */
  5: #include <petsc-private/drawimpl.h>  /*I "petscdraw.h" I*/

  9: /*@
 10:    PetscDrawPointSetSize - Sets the point size for future draws.  The size is
 11:    relative to the user coordinates of the window; 0.0 denotes the natural
 12:    width, 1.0 denotes the entire viewport.

 14:    Not collective

 16:    Input Parameters:
 17: +  draw - the drawing context
 18: -  width - the width in user coordinates

 20:    Level: advanced

 22:    Note:
 23:    Even a size of zero insures that a single pixel is colored.

 25:    Concepts: point^drawing size

 27: .seealso: PetscDrawPoint()
 28: @*/
 29: PetscErrorCode  PetscDrawPointSetSize(PetscDraw draw,PetscReal width)
 30: {
 32:   PetscBool      isnull;

 36:   PetscObjectTypeCompare((PetscObject)draw,PETSC_DRAW_NULL,&isnull);
 37:   if (isnull) return(0);
 38:   if (width < 0.0 || width > 1.0) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Bad size %g, should be between 0 and 1",(double)width);
 39:   if (draw->ops->pointsetsize) {
 40:     (*draw->ops->pointsetsize)(draw,width);
 41:   }
 42:   return(0);
 43: }