public void setValue(float a_value) {
if (m_wholeNumbers) {
m_value_float = Math.round(a_value);
} else {
m_value_float = a_value;
}
}
public void setValue(double a_value) {
if (m_wholeNumbers) {
m_value_double = Math.round(a_value);
} else {
m_value_double = a_value;
}
}
protected void setRandomValue(double a_value) {
RandomGenerator randomGen = getGPConfiguration().getRandomGenerator();
m_value_double = randomGen.nextDouble() * (m_upperBounds - m_lowerBounds) + m_lowerBounds;
if (m_wholeNumbers) {
m_value_double = Math.round(m_value_double);
}
}
protected void setRandomValue(float a_value) {
RandomGenerator randomGen = getGPConfiguration().getRandomGenerator();
m_value_float =
(float) (randomGen.nextFloat() * (m_upperBounds - m_lowerBounds) + m_lowerBounds);
if (m_wholeNumbers) {
m_value_float = Math.round(m_value_float);
}
}
public CommandGene applyMutation(int index, double a_percentage)
throws InvalidConfigurationException {
// If percentage is very high: do mutation not relying on
// current value but on a random value.
// ------------------------------------------------------
if (a_percentage > 0.85d) {
setRandomValue();
} else {
Class retType = getReturnType();
if (retType == CommandGene.FloatClass) {
float newValuef;
float rangef = ((float) m_upperBounds - (float) m_lowerBounds) * (float) a_percentage;
if (m_value_float >= (m_upperBounds - m_lowerBounds) / 2) {
newValuef =
m_value_float - getGPConfiguration().getRandomGenerator().nextFloat() * rangef;
} else {
newValuef =
m_value_float + getGPConfiguration().getRandomGenerator().nextFloat() * rangef;
}
// Ensure value is within bounds.
// ------------------------------
if (m_lowerBounds - newValuef > DELTA || newValuef - m_upperBounds > DELTA) {
setRandomValue(m_value_float);
} else {
setValue(newValuef);
}
} else if (retType == CommandGene.DoubleClass) {
double newValueD;
double rangeD = (m_upperBounds - m_lowerBounds) * a_percentage;
if (m_value_double >= (m_upperBounds - m_lowerBounds) / 2) {
newValueD =
m_value_double - getGPConfiguration().getRandomGenerator().nextFloat() * rangeD;
} else {
newValueD =
m_value_double + getGPConfiguration().getRandomGenerator().nextFloat() * rangeD;
}
// Ensure value is within bounds.
// ------------------------------
if (m_lowerBounds - newValueD > DELTA || newValueD - m_upperBounds > DELTA) {
setRandomValue(m_value_float);
} else {
setValue(newValueD);
}
} else if (retType == CommandGene.IntegerClass) {
int newValueI;
double range = (m_upperBounds - m_lowerBounds) * a_percentage;
if (m_value_int >= (m_upperBounds - m_lowerBounds) / 2) {
newValueI =
m_value_int
- (int) Math.round(getGPConfiguration().getRandomGenerator().nextInt() * range);
} else {
newValueI =
m_value_int
+ (int) Math.round(getGPConfiguration().getRandomGenerator().nextFloat() * range);
}
// Ensure value is within bounds.
// ------------------------------
if (newValueI < m_lowerBounds || newValueI > m_upperBounds) {
setRandomValue(m_value_int);
} else {
setValue(newValueI);
}
} else if (retType == CommandGene.LongClass) {
long newValueL;
double range = (m_upperBounds - m_lowerBounds) * a_percentage;
if (m_value_long >= (m_upperBounds - m_lowerBounds) / 2) {
newValueL =
m_value_long
- Math.round(getGPConfiguration().getRandomGenerator().nextInt() * range);
} else {
newValueL =
m_value_long
+ Math.round(getGPConfiguration().getRandomGenerator().nextFloat() * range);
}
// Ensure value is within bounds.
// ------------------------------
if (newValueL < m_lowerBounds || newValueL > m_upperBounds) {
setRandomValue(m_value_long);
} else {
setValue(newValueL);
}
}
}
return this;
}
protected void setRandomValue(long a_value) {
RandomGenerator randomGen = getGPConfiguration().getRandomGenerator();
m_value_long =
Math.round(randomGen.nextDouble() * (m_upperBounds - m_lowerBounds) + m_lowerBounds);
}