Mercurial > octave-dspies
view examples/unwinddemo.cc @ 18677:f684f7075aee
Don't fetch lots of axes state information for rendering if object is not visible.
* gl-render.cc (opengl_renderer::draw_axes_planes): Check axes color and
visibility and return immediately from function if there is nothing to do.
* gl-render.cc (opengl_renderer::draw_axes_boxes): Check axes
visibility and return immediately from function if there is nothing to do.
* gl-render.cc (opengl_renderer::draw_axes_x_grid, drax_axes_y_grid,
draw_axes_z_grid): Check axes state and visibility before bothering to
fetch any more state data.
* gl-render.cc (miscellaneous): Clean up comments. Change lines to wrap at <
80 chars.
* graphics.cc (axes::properties::update_axes_layout): Use std::swap instead
of intermediate temporary variable for clearer coding style.
author | Rik <rik@octave.org> |
---|---|
date | Fri, 25 Apr 2014 11:18:04 -0700 |
parents | be41c30bcb44 |
children |
line wrap: on
line source
#include <octave/oct.h> #include <octave/unwind-prot.h> void my_err_handler (const char *fmt, ...) { // Do nothing!! } DEFUN_DLD (unwinddemo, args, nargout, "Unwind Demo") { octave_value retval; int nargin = args.length (); if (nargin < 2) print_usage (); else { NDArray a = args(0).array_value (); NDArray b = args(1).array_value (); if (! error_state) { // Declare unwind_protect frame which lasts as long as // the variable frame has scope. unwind_protect frame; frame.protect_var (current_liboctave_warning_handler); set_liboctave_warning_handler (my_err_handler); retval = octave_value (quotient (a, b)); } } return retval; }