void
c_plbin( PLINT nbin, const PLFLT *x, const PLFLT *y, PLINT flags )
{
PLINT i;
PLFLT xmin, xmax, vpwxmi, vpwxma, vpwymi, vpwyma;
if ( m_plsc->level < 3 )
{
plabort( "plbin: Please set up window first" );
return;
}
// Check x[i] are in ascending order
for ( i = 0; i < nbin - 1; i++ )
{
if ( x[i] >= x[i + 1] )
{
plabort( "plbin: Elements of x array must be increasing" );
return;
}
}
plP_xgvpw( &vpwxmi, &vpwxma, &vpwymi, &vpwyma );
if ( !( flags & 1 ) )
{
for ( i = 0; i < nbin - 1; i++ )
{
if ( !( flags & 4 ) || ( y[i] != vpwymi ) )
{
pljoin( x[i], vpwymi, x[i], y[i] );
pljoin( x[i], y[i], x[i + 1], y[i] );
pljoin( x[i + 1], y[i], x[i + 1], vpwymi );
}
}
if ( flags & 2 )
{
if ( !( flags & 4 ) || ( y[i] != vpwymi ) )
{
int xm = (int) ( x[i] + ( x[i] - x[i - 1] ) );
pljoin( x[i], vpwymi, x[i], y[i] );
pljoin( x[i], y[i], xm, y[i] );
pljoin( xm, y[i], xm, vpwymi );
}
}
else
{
if ( x[i] < vpwxma )
{
if ( !( flags & 4 ) || ( y[i] != vpwymi ) )
{
pljoin( x[i], vpwymi, x[i], y[i] );
pljoin( x[i], y[i], vpwxma, y[i] );
pljoin( vpwxma, y[i], vpwxma, vpwymi );
}
}
}
}
else
{
if ( nbin < 2 )
return;
if ( flags & 2 )
{
xmin = MAX( vpwxmi, 0.5 * ( 3 * x[0] - x[1] ) );
}
else
{
xmin = vpwxmi;
}
// Vince fixed bug May 1998
xmax = MAX( 0.5 * ( x[0] + x[1] ), vpwxmi );
if ( xmin < xmax )
{
pljoin( xmin, vpwymi, xmin, y[0] );
pljoin( xmin, y[0], xmax, y[0] );
pljoin( xmax, y[0], xmax, vpwymi );
}
for ( i = 1; i < nbin - 1; i++ )
{
xmin = xmax;
xmax = MIN( 0.5 * ( x[i] + x[i + 1] ), vpwxma );
if ( !( flags & 4 ) || ( y[i] != vpwymi ) )
{
pljoin( xmin, vpwymi, xmin, y[i] );
pljoin( xmin, y[i], xmax, y[i] );
pljoin( xmax, y[i], xmax, vpwymi );
}
}
xmin = xmax;
xmax = vpwxma;
if ( flags & 2 )
{
xmax = MIN( vpwxma, 0.5 * ( 3 * x[i] - x[i - 1] ) );
}
else
{
xmax = vpwxma;
}
if ( xmin < xmax )
{
if ( !( flags & 4 ) || ( y[i] != vpwymi ) )
{
pljoin( xmin, vpwymi, xmin, y[i] );
pljoin( xmin, y[i], xmax, y[i] );
pljoin( xmax, y[i], xmax, vpwymi );
}
}
}
}
void
c_plwind(PLFLT xmin, PLFLT xmax, PLFLT ymin, PLFLT ymax)
{
PLFLT dx, dy, mmxmi, mmxma, mmymi, mmyma;
PLFLT xvpwxmin, xvpwxmax, xvpwymin, xvpwymax;
PLWindow w;
if (plsc->level < 2) {
plabort("plwind: Please set up viewport first");
return;
}
/* Best to just warn and recover on bounds errors */
if (xmin == xmax) {
plwarn("plwind: Invalid window limits in x.");
xmin--; xmax++;
}
if (ymin == ymax) {
plwarn("plwind: Invalid window limits in y.");
ymin--; ymax++;
}
plsc->vpwxmi = xmin;
plsc->vpwxma = xmax;
plsc->vpwymi = ymin;
plsc->vpwyma = ymax;
/* The true plot window is made slightly larger than requested so that */
/* the end limits will be on the graph */
/* Get the (slightly extended) window limits. */
plP_xgvpw(&xvpwxmin, &xvpwxmax, &xvpwymin, &xvpwymax);
/* Compute the scaling between coordinate systems */
dx = xvpwxmax - xvpwxmin;
dy = xvpwymax - xvpwymin;
plsc->wpxscl = (plsc->vppxma - plsc->vppxmi) / dx;
plsc->wpxoff = (xmax * plsc->vppxmi - xmin * plsc->vppxma) / dx;
plsc->wpyscl = (plsc->vppyma - plsc->vppymi) / dy;
plsc->wpyoff = (ymax * plsc->vppymi - ymin * plsc->vppyma) / dy;
mmxmi = plP_dcmmx(plsc->vpdxmi);
mmxma = plP_dcmmx(plsc->vpdxma);
mmymi = plP_dcmmy(plsc->vpdymi);
mmyma = plP_dcmmy(plsc->vpdyma);
/* Set transformation variables for world coordinates to mm */
plsc->wmxscl = (mmxma - mmxmi) / dx;
plsc->wmxoff = (xmax * mmxmi - xmin * mmxma) / dx;
plsc->wmyscl = (mmyma - mmymi) / dy;
plsc->wmyoff = (ymax * mmymi - ymin * mmyma) / dy;
/* Set transformation variables for world coordinates to device coords */
plsc->wdxscl = plsc->wmxscl * plsc->xpmm / (plsc->phyxma - plsc->phyxmi);
plsc->wdxoff = plsc->wmxoff * plsc->xpmm / (plsc->phyxma - plsc->phyxmi);
plsc->wdyscl = plsc->wmyscl * plsc->ypmm / (plsc->phyyma - plsc->phyymi);
plsc->wdyoff = plsc->wmyoff * plsc->ypmm / (plsc->phyyma - plsc->phyymi);
/* Register plot window attributes */
w.dxmi = plsc->vpdxmi;
w.dxma = plsc->vpdxma;
w.dymi = plsc->vpdymi;
w.dyma = plsc->vpdyma;
w.wxmi = xvpwxmin;
w.wxma = xvpwxmax;
w.wymi = xvpwymin;
w.wyma = xvpwymax;
plP_swin(&w);
/* Go to level 3 */
plsc->level = 3;
}