public Color getColor(float[] f, boolean fillAndStroke) {
init();
if (colorSpace != null && !failed) {
try {
// generate a key for the colour
int key = generateKey(f);
if (f.length <= 3) {
return addColorToCache(iccColorCache3B, key, colorSpace, f);
} else {
return addColorToCache(iccColorCache4B, key, colorSpace, f);
}
} catch (Exception e) {
logger.log(Level.FINE, "Error getting ICCBased colour", e);
failed = true;
}
}
return alternate.getColor(f);
}
/**
* Calculate the colours value of the point xy on the line point1 and point2.
*
* @param colorSpace colour space to apply to the function output
* @param xy point to calcualte the colour of.
* @param point1 start of gradient line
* @param point2 end of gradient line.
* @param t0 domain min
* @param t1 domain max
* @return colour derived from the input parameters.
*/
private Color calculateColour(
PColorSpace colorSpace,
Point2D.Float xy,
Point2D.Float point1,
Point2D.Float point2,
float t0,
float t1) {
// find colour at point 1
float xPrime = linearMapping(xy, point1, point2);
float t = parametrixValue(xPrime, t0, t1, extend);
// find colour at point 2
float[] input = new float[1];
input[0] = t;
// apply the function to the given input
if (function != null) {
float[] output;
int length = function.length;
// simple 1 in N out function
if (length == 1) {
output = function[0].calculate(input);
} else {
// vector of function for each colour component, 1 in 1 out.
output = new float[length];
for (int i = 0; i < length; i++) {
output[i] = function[i].calculate(input)[0];
}
}
if (output != null) {
output = PColorSpace.reverse(output);
return colorSpace.getColor(output, true);
} else {
return null;
}
} else {
logger.fine("Error processing Shading Type 2 Pattern.");
return null;
}
}