petsc-3.7.7 2017-09-25

PetscDrawOpenGLUT

Opens an OpenGL window based on GLUT for use with the PetscDraw routines.

Synopsis

#include "petscsys.h" 
PetscErrorCode  PetscDrawOpenGLUT(MPI_Comm comm,const char display[],const char title[],int x,int y,int w,int h,PetscDraw *draw)

Collective on MPI_Comm

Input Parameters

	comm	- the communicator that will share X-window
	display	- the X display on which to open,or null for the local machine
	title	- the title to put in the title bar,or null for no title
	x,y	- the screen coordinates of the upper left corner of window may use PETSC_DECIDE for these two arguments, then PETSc places the window
	w, h	- the screen width and height in pixels, or PETSC_DRAW_HALF_SIZE, PETSC_DRAW_FULL_SIZE, or PETSC_DRAW_THIRD_SIZE or PETSC_DRAW_QUARTER_SIZE

Output Parameters

draw -the drawing context.

Options Database Keys

	-nox	- Disables all x-windows output
	-draw_pause <pause>	- Sets time (in seconds) that the program pauses after PetscDrawPause() has been called (0 is default, -1 implies until user input).
	-draw_cmap <name>	- Sets the colormap to use.
	-draw_cmap_reverse	- Reverses the colormap.
	-draw_cmap_brighten	- Brighten (0 < beta < 1) or darken (-1 < beta < 0) the colormap.

Note

When finished with the drawing context, it should be destroyed with PetscDrawDestroy().

Note for Fortran Programmers

Whenever indicating null character data in a Fortran code, NULL_CHARACTER must be employed; using NULL is not correct for character data! Thus, NULL_CHARACTER can be used for the display and title input parameters.