$item)
{
$item = array_merge($prop['scale'], $item);
$item['min'] = first($item['min'] ?? false, 0);
$item['max'] = first($item['max'] ?? false, 100);
$item['tooltip'] = (string)($item['tooltip'] ?? '');
$item['unit'] = (string)($item['unit'] ?? '');
$item['color'] = $item['color'] ?? false;
$item['label'] = (string)first($item['label'] ?? false, ucfirst((string)$item_id));
$vrange = ($item['max'] - $item['min']);
$pct_value = clamp(($item['value'] - $item['min']) / $vrange, 0, 1);
$needle_angle = -pi() + $item['angle_start'] + ($pct_value * ($item['angle_end'] - $item['angle_start']));
$needle_color = first($item['color'] ?? false, '#888888');
if(is_array($item['color'])) {
$color_entry = pick_entry_from_range($item['color'], $item['value']);
$needle_color = first($color_entry['color'] ?? false, '#888888');
}
$tick_interval = first($item['ticks-every'], $vrange / 20);
$label_interval = first($item['value-labels-every'], $vrange / 4);
$tick_number = 0;
$ticks_html = '';
$min_angle = first($item['angle_start']);
$max_angle = first($item['angle_end']);
$tick_color = first($item['tick-color'], '#888888');
for($v = $item['min']; $v <= $item['max']; $v += $tick_interval)
{
$tick_number++;
$angle = $min_angle + (($v-$item['min'])/$vrange) * ($max_angle - $min_angle);
$x1 = $prop['size']/2 + cos($angle) * $prop['size']*0.38;
$y1 = $prop['size']/2 + sin($angle) * $prop['size']*0.38;
$x2 = $prop['size']/2 + cos($angle) * $prop['size']*0.41;
$y2 = $prop['size']/2 + sin($angle) * $prop['size']*0.41;
$ticks_html .= '
';
}
for($v = $item['min']; $v <= $item['max']; $v += $label_interval)
{
$tick_number++;
$angle = $min_angle + (($v-$item['min'])/$vrange) * ($max_angle - $min_angle);
$x1 = $prop['size']/2 + cos($angle) * $prop['size']*0.35;
$y1 = $prop['size']/2 + sin($angle) * $prop['size']*0.35;
$x2 = $prop['size']/2 + cos($angle) * $prop['size']*0.41;
$y2 = $prop['size']/2 + sin($angle) * $prop['size']*0.41;
$ticks_html .= '
';
$lx = $prop['size']/2 + cos($angle) * $prop['size']*0.45;
$ly = $prop['size']/2 + sin($angle) * $prop['size']*0.45;
$ticks_html .= '
'.($v == 0 ? '0' : $v).'';
}
?>