/**
* Determines if we have a valid buffer for optimising.
*
* Has to be G1s all round with no Z movements, and either all extrusions or all movements.
*
* The extrusions also have to be the same mm^3/mm along the path.
*
* They also have to describe a circle
* @param SplQueue $buffer The buffer
* @return Boolean Whether the buffer is valid
*/
function bufferValid($buffer)
{
global $debug;
global $pos_error;
for ($buffer->rewind(); $buffer->valid(); $buffer->next()) {
if (substr($buffer->current(), 0, 2) !== "G1") {
$buffer->rewind();
return false;
} else {
if (strpos($buffer->current(), "Z") !== FALSE) {
$buffer->rewind();
return false;
}
}
}
$lines = getLines($buffer);
$allE = false;
$allF = false;
if (!is_null($lines[0]['E'])) {
$allE = true;
}
if (!is_null($lines[0]['F'])) {
$allF = true;
}
foreach ($lines as $num => $line) {
$allE = $allE && is_null($line['F']) && !is_null($line['E']);
$allF = $allF && is_null($line['E']) && !is_null($line['F']);
}
if (!($allE || $allF)) {
$buffer->rewind();
return false;
}
if ($allE) {
$extrusions = getExtrusionLengths($lines);
$eerror = calculateExtrusionError($extrusions);
if (calculateExtrusionError($extrusions) === false) {
$buffer->rewind();
return false;
}
}
$lines->rewind();
$circle = getCircle($lines);
if ($circle === false) {
$buffer->rewind();
return false;
}
if (max($circle['errors']) > $pos_error) {
return false;
}
$buffer->rewind();
return $circle;
}
$group->setSpace(5, 5, 5, 5);
$group->legend->setPosition(0.82, 0.1);
$group->legend->setAlign(LEGEND_CENTER, LEGEND_MIDDLE);
function getCircle($size)
{
$center = 0;
$x = array();
$y = array();
for ($i = 0; $i <= 20; $i++) {
$rad = $i / 20 * 2 * M_PI;
$x[] = $center + cos($rad) * $size;
$y[] = $center + sin($rad) * $size;
}
return array($x, $y);
}
list($x, $y) = getCircle(3);
$plot = new ScatterPlot($y, $x);
$plot->link(TRUE, new DarkBlue());
$plot->mark->setFill(new DarkPink());
$plot->mark->setType(MARK_CIRCLE, 6);
$group->legend->add($plot, 'Circle #1', LEGEND_MARK);
$group->add($plot);
list($x, $y) = getCircle(5);
$plot = new ScatterPlot($y, $x);
$plot->link(TRUE, new DarkGreen());
$plot->mark->setFill(new DarkOrange());
$plot->mark->setType(MARK_SQUARE, 4);
$group->legend->add($plot, 'Circle #2', LEGEND_MARK);
$group->add($plot);
$graph->add($group);
$graph->draw();
/**
* @deprecated
* @param [type] $buffer [description]
* @param string $id [description]
* @return [type] [description]
*/
function processBuffer($buffer, $id = 'gcodeview')
{
global $pos_error;
global $debug;
$lines = getLines($buffer);
$circle = getCircle($lines);
if ($circle == false) {
return false;
}
if (max($circle['errors']) < $pos_error) {
return $circle;
} else {
return false;
}
//print_r($lines);
}