/**
* Robustly make a curve to a front
*
* @param curve the curve
* @param flip true to flip the pips
* @return the resulting front as a FieldImpl
* @throws RemoteException On badness
*/
public FieldImpl robustCurveToFront(float[][] curve, boolean flip) throws RemoteException {
// resample curve uniformly along length
float increment = rsegment_length / (rprofile_length * zoom);
float[][] oldCurve = null;
try {
oldCurve = resample_curve(curve, increment);
} catch (VisADError ve) { // bad curve
return null;
}
int fw = filter_window;
fw = 1;
FieldImpl front = null;
float[][] originalCurve = curve;
debug = true;
for (int tries = 0; tries < 12; tries++) {
// lowpass filter curve
curve = smooth_curve(oldCurve, fw);
// resample smoothed curve
curve = resample_curve(curve, increment);
try {
front = curveToFront(curve, flip);
break;
} catch (VisADException e) {
oldCurve = curve;
if (tries > 4) {
int n = oldCurve[0].length;
if (n > 2) {
float[][] no = new float[2][n - 2];
System.arraycopy(oldCurve[0], 1, no[0], 0, n - 2);
System.arraycopy(oldCurve[1], 1, no[1], 0, n - 2);
oldCurve = no;
}
}
if (tries > 8) {
fw = 2 * fw;
}
// if (debug) System.out.println("retry filter window = " + fw + " " + e);
if (tries == 9) {
// System.out.println("cannot smooth curve");
front = null;
}
}
}
return front;
}
/**
* Set the front state
*
* @param fsegment length of first segment in graphics coord
* @param rsegment length of repeating segment in graphics coord
* @param fshapes shapes of the front
* @param fred first reds
* @param fgreen first greens
* @param fblue first blues
* @param rshapes repeating shapes
* @param rred repeating reds
* @param rgreen repeating greens
* @param rblue repeating blues
* @throws RemoteException On badness
* @throws VisADException On badness
*/
private void setFrontState(
float fsegment,
float rsegment,
float[][][] fshapes,
float[] fred,
float[] fgreen,
float[] fblue,
float[][][] rshapes,
float[] rred,
float[] rgreen,
float[] rblue)
throws VisADException, RemoteException {
fsegment_length = fsegment;
rsegment_length = rsegment;
nrshapes = rshapes.length;
for (int i = 0; i < nrshapes; i++) {
if ((rshapes[i] == null)
|| (rshapes[i].length != 2)
|| (rshapes[i][0] == null)
|| (rshapes[i][1] == null)
|| (rshapes[i][0].length != rshapes[i][1].length)) {
throw new VisADException("bad rshapes[" + i + "]");
}
}
if ((rred == null)
|| (rred.length != nrshapes)
|| (rgreen == null)
|| (rgreen.length != nrshapes)
|| (rblue == null)
|| (rblue.length != nrshapes)) {
throw new VisADException("bad rcolors");
}
repeat_tris = new int[nrshapes][][];
for (int i = 0; i < nrshapes; i++) {
repeat_tris[i] = DelaunayCustom.fill(rshapes[i]);
}
repeat_shapes = new float[nrshapes][2][];
int rlen = 0;
for (int i = 0; i < nrshapes; i++) {
int n = rshapes[i][0].length;
rlen += n;
repeat_shapes[i][0] = new float[n];
repeat_shapes[i][1] = new float[n];
System.arraycopy(rshapes[i][0], 0, repeat_shapes[i][0], 0, n);
System.arraycopy(rshapes[i][1], 0, repeat_shapes[i][1], 0, n);
}
rprofile_length = rlen;
repeat_red = new float[nrshapes];
repeat_green = new float[nrshapes];
repeat_blue = new float[nrshapes];
System.arraycopy(rred, 0, repeat_red, 0, nrshapes);
System.arraycopy(rgreen, 0, repeat_green, 0, nrshapes);
System.arraycopy(rblue, 0, repeat_blue, 0, nrshapes);
if (fshapes == null) {
// if no different first shapes, just use repeat shapes
nfshapes = nrshapes;
first_tris = repeat_tris;
first_shapes = repeat_shapes;
first_red = repeat_red;
first_green = repeat_green;
first_blue = repeat_blue;
} else {
nfshapes = fshapes.length;
for (int i = 0; i < nfshapes; i++) {
if ((fshapes[i] == null)
|| (fshapes[i].length != 2)
|| (fshapes[i][0] == null)
|| (fshapes[i][1] == null)
|| (fshapes[i][0].length != fshapes[i][1].length)) {
throw new VisADException("bad fshapes[" + i + "]");
}
}
if ((fred == null)
|| (fred.length != nfshapes)
|| (fgreen == null)
|| (fgreen.length != nfshapes)
|| (fblue == null)
|| (fblue.length != nfshapes)) {
throw new VisADException("bad fcolors");
}
first_tris = new int[nfshapes][][];
for (int i = 0; i < nfshapes; i++) {
first_tris[i] = DelaunayCustom.fill(fshapes[i]);
}
first_shapes = new float[nfshapes][2][];
int flen = 0;
for (int i = 0; i < nfshapes; i++) {
int n = fshapes[i][0].length;
flen += n;
first_shapes[i][0] = new float[n];
first_shapes[i][1] = new float[n];
System.arraycopy(fshapes[i][0], 0, first_shapes[i][0], 0, n);
System.arraycopy(fshapes[i][1], 0, first_shapes[i][1], 0, n);
}
fprofile_length = flen;
first_red = new float[nfshapes];
first_green = new float[nfshapes];
first_blue = new float[nfshapes];
System.arraycopy(fred, 0, first_red, 0, nfshapes);
System.arraycopy(fgreen, 0, first_green, 0, nfshapes);
System.arraycopy(fblue, 0, first_blue, 0, nfshapes);
}
if (rprofile_length < 5) {
rprofile_length = 5;
}
if (fprofile_length < 5) {
fprofile_length = 5;
}
}