/**
* Sets the min and max value for scaling. This assumes that the entries in the color scale range
* from 0 to 1. This also forces the scaling to be min/max. Min will be scaled to 0 and max will
* be scaled to 1 in the color scale. All values between will be linearly interpolated. Values out
* of bounds will be forced into range according to the forceValuesIntoRange property, which is
* false by default.
*
* @param min The minimum value to be expected (smaller values will just be forced to min.
* @param max The maximum value to be expected (larger values will just be forced to max.
*/
public void setScaleRange(final double min, final double max) {
this.min = min;
this.max = max;
if (scaling != Scaling.Modulo) {
scaling = Scaling.MinMax;
}
cache = null;
buildCache();
}
public final int[] lookup(final double v) {
if (Double.isNaN(v) || v == transparent) {
return nullColor;
}
if (cache == null) {
buildCache();
}
if (v < min) {
if (forceValuesIntoRange) {
return cache[0];
}
return nullColor;
} else if (v > max) {
if (forceValuesIntoRange) {
return cache[CACHE_SIZE - 1];
}
return nullColor;
} else {
final int i = (int) ((v - min) / (max - min) * (CACHE_SIZE - 1) + 0.5);
// int i = (int) ((v - min) / (max - min) * (CACHE_SIZE - 1));
return cache[i];
}
}