1 2 /* 3 Provides the calling sequences for all the basic Draw routines. 4 */ 5 #include <petsc/private/drawimpl.h> /*I "petscdraw.h" I*/ 6 7 /*@ 8 PetscDrawEllipse - Draws an ellipse onto a drawable. 9 10 Not collective 11 12 Input Parameters: 13 + draw - The drawing context 14 . x,y - The center 15 . a,b - The major and minor axes lengths 16 - c - The color 17 18 Level: beginner 19 20 .seealso: PetscDrawRectangle(), PetscDrawTriangle(), PetscDrawMarker(), PetscDrawPoint(), PetscDrawString(), PetscDrawArrow() 21 @*/ 22 PetscErrorCode PetscDrawEllipse(PetscDraw draw, PetscReal x, PetscReal y, PetscReal a, PetscReal b, int c) 23 { 24 PetscErrorCode ierr; 25 26 PetscFunctionBegin; 27 PetscValidHeaderSpecific(draw, PETSC_DRAW_CLASSID,1); 28 if (!draw->ops->ellipse) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_SUP,"No support for drawing ellipses"); 29 ierr = (*draw->ops->ellipse)(draw, x, y, a, b, c);CHKERRQ(ierr); 30 PetscFunctionReturn(0); 31 } 32