Mercurial > octave-dspies
view examples/mypow2.c @ 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 | 224e76250443 |
children |
line wrap: on
line source
#include "mex.h" void mexFunction (int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[]) { mwSize n; mwIndex i; double *vri, *vro; if (nrhs != 1 || ! mxIsNumeric (prhs[0])) mexErrMsgTxt ("ARG1 must be a matrix"); n = mxGetNumberOfElements (prhs[0]); plhs[0] = mxCreateNumericArray (mxGetNumberOfDimensions (prhs[0]), mxGetDimensions (prhs[0]), mxGetClassID (prhs[0]), mxIsComplex (prhs[0])); vri = mxGetPr (prhs[0]); vro = mxGetPr (plhs[0]); if (mxIsComplex (prhs[0])) { double *vii, *vio; vii = mxGetPi (prhs[0]); vio = mxGetPi (plhs[0]); for (i = 0; i < n; i++) { vro[i] = vri[i] * vri[i] - vii[i] * vii[i]; vio[i] = 2 * vri[i] * vii[i]; } } else { for (i = 0; i < n; i++) vro[i] = vri[i] * vri[i]; } }