/** * Calculate elevation value * * This method does directly update the route object. */ public function calculateElevation() { $Calculator = new Calculation\Calculator($this->Route->elevations()); $Calculator->calculate(); $this->Route->set(Route\Entity::ELEVATION, $Calculator->totalElevation()); $this->Route->set(Route\Entity::ELEVATION_UP, $Calculator->elevationUp()); $this->Route->set(Route\Entity::ELEVATION_DOWN, $Calculator->elevationDown()); }
/** * Calculate power array * * A constant factor of 1.5 was used in previous versions - and I don't know why. * Without this factor results equal standard tools. * * @author Nils Frohberg * @author Hannes Christiansen * @see http://www.blog.ultracycle.net/2010/05/cycling-power-calculations * @param int $weight [kg] Weight of rider and bike * @param float $powerFactor constant factor * @return array */ public function calculate($weight = 75, $powerFactor = 1.0) { if (!$this->Trackdata->has(Trackdata\Entity::TIME) || !$this->Trackdata->has(Trackdata\Entity::DISTANCE)) { return []; } $everyNthPoint = ceil($this->Size / 1000); $n = $everyNthPoint; $grade = 0; $calcGrade = $this->knowsRoute() && $this->Route->hasElevations(); $ArrayTime = $this->Trackdata->time(); $ArrayDist = $this->Trackdata->distance(); $ArrayElev = $this->knowsRoute() ? $this->Route->elevations() : array(); $Frl = $weight * self::GRAVITY * self::CRR; $Fwpr = 0.5 * self::AREA * self::CW * $this->rho(); $Fslp = $weight * self::GRAVITY; for ($i = 0; $i < $this->Size - 1; $i++) { if ($i % $everyNthPoint == 0) { if ($i + $n > $this->Size - 1) { $n = $this->Size - $i - 1; } $distance = ($ArrayDist[$i + $n] - $ArrayDist[$i]) * 1000; $grade = $distance == 0 || !$calcGrade ? 0 : ($ArrayElev[$i + $n] - $ArrayElev[$i]) / $distance; } $distance = $ArrayDist[$i + 1] - $ArrayDist[$i]; $time = $ArrayTime[$i + 1] - $ArrayTime[$i]; if ($time > 0) { $Vmps = $distance * 1000 / $time; $Fw = $Fwpr * $Vmps * $Vmps; $Fsl = $Fslp * $grade; $this->Power[] = round(max($powerFactor * ($Frl + $Fw + $Fsl) * $Vmps, 0)); } else { $this->Power[] = 0; } } $this->Power[] = $this->Power[$this->Size - 2]; /* XXX */ return $this->Power; }