/**
* Calculate suitable colors for each defined isobar
*
*/
function CalculateColors()
{
if ($this->highcontrast) {
if ($this->highcontrastbw) {
for ($ib = 0; $ib < $this->nbrIsobars; $ib++) {
$this->isobarColors[$ib] = 'black';
}
} else {
// Use only blue/red scale
$step = round(255 / ($this->nbrIsobars - 1));
for ($ib = 0; $ib < $this->nbrIsobars; $ib++) {
$this->isobarColors[$ib] = array($ib * $step, 50, 255 - $ib * $step);
}
}
} else {
$n = $this->nbrIsobars;
$v = 0;
$step = 1 / ($this->nbrIsobars - 1);
for ($ib = 0; $ib < $this->nbrIsobars; $ib++) {
$this->isobarColors[$ib] = RGB::GetSpectrum($v);
$v += $step;
}
}
}
/**
* Calculate suitable colors for each defined isobar
*
*/
function CalculateColors()
{
if ($this->highcontrast) {
if ($this->highcontrastbw) {
for ($ib = 0; $ib <= $this->nContours; $ib++) {
$this->contcolors[$ib] = 'black';
}
} else {
// Use only blue/red scale
$step = 255.0 / $this->nContours;
for ($ib = 0; $ib <= $this->nContours; $ib++) {
$this->contcolors[$ib] = array(round($ib * $step), 50, round(255 - $ib * $step));
}
}
} else {
// This will return a basic spectrum from blue to red in even steps
// this should probably be upgraded to our newer spectrum method introduced
// with matrix plots
$n = $this->nContours;
$v = 0;
$step = 1 / $this->nContours;
for ($ib = 0; $ib <= $this->nContours; $ib++) {
$this->contcolors[$ib] = RGB::GetSpectrum($v);
$v += $step;
}
}
}
