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AeroflyBlender.cpp
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AeroflyBlender.cpp
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#include "stdafx.h"
#include <stdlib.h>
#include "AeroflyBlender.h"
unsigned short AeroflyBlender::blendValue(double ¤tValue, double targetValue, double step)
{
if (currentValue == targetValue) {
return 0;
}
if (currentValue < targetValue) {
currentValue += step;
if (currentValue > targetValue) {
currentValue = targetValue;
}
}
else {
currentValue -= step;
if (currentValue < targetValue) {
currentValue = targetValue;
}
}
return 1;
}
unsigned short AeroflyBlender::blendDegrees(unsigned int ¤tValue, unsigned int targetValue, unsigned int step)
{
if (currentValue == targetValue) {
return 0;
}
// Give us some leeway
int computedValue = currentValue;
int range = currentValue - targetValue;
if ((range < 0 && range > -180) || range > 180) {
computedValue += ((int)step <= abs(range)) ? step : abs(range);
}
else {
computedValue -= ((int)step <= abs(range)) ? step : abs(range);
}
// Fix over/underflow
if (computedValue > 359) {
computedValue -= 360;
}
else if (computedValue < 0) {
computedValue += 360;
}
// Re-assign
currentValue = computedValue;
return 1;
}
AeroflyBlender::AeroflyBlender(AeroflyWeather *aerofly)
{
this->targetSituation = aerofly;
this->currentSituation = *aerofly;
}
AeroflyBlender::~AeroflyBlender()
{
}
unsigned short AeroflyBlender::blend(double step)
{
unsigned short hasChanged = 0;
hasChanged += this->blendValue((&this->currentSituation)->windStrength, this->targetSituation->windStrength, step);
hasChanged += this->blendDegrees((&this->currentSituation)->windDirection, this->targetSituation->windDirection, (int)(step * 360));
hasChanged += this->blendValue((&this->currentSituation)->windTurbulence, this->targetSituation->windTurbulence, step);
hasChanged += this->blendValue((&this->currentSituation)->thermalActivity, this->targetSituation->thermalActivity, step);
hasChanged += this->blendValue((&this->currentSituation)->visibility, this->targetSituation->visibility, step);
for (int i = 0; i < 3; ++i) {
hasChanged += this->blendValue((&this->currentSituation)->clouds[i].height, this->targetSituation->clouds[i].height, step);
hasChanged += this->blendValue((&this->currentSituation)->clouds[i].density, this->targetSituation->clouds[i].density, step);
}
return hasChanged;
}