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CaRMtl/rene/zirkel/objects/TrackObject.java

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Make first real commit: copy of CaRMetal 4.2.8
2018-09-05 02:51:42 +00:00
/*
Copyright 2006 Rene Grothmann, modified by Eric Hakenholz
This file is part of C.a.R. software.
C.a.R. is a free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 3 of the License.
C.a.R. is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package rene.zirkel.objects;
// file: TrackObject.java
import java.util.Enumeration;
import java.util.Vector;
import rene.gui.Global;
import rene.util.xml.XmlWriter;
import rene.zirkel.ZirkelCanvas;
import rene.zirkel.construction.Construction;
import rene.zirkel.construction.ConstructionException;
import rene.zirkel.construction.Count;
import rene.zirkel.expression.ExpressionColor;
import rene.zirkel.graphics.MainGraphics;
import rene.zirkel.graphics.MyGraphics;
import rene.zirkel.graphics.PolygonDrawer;
import rene.zirkel.graphics.PolygonFiller;
import rene.zirkel.structures.Coordinates;
/**
* This object contains an automatic track. It is saved in the construction like
* any other ConstructionObject. Validation is time consuming and is done only
* on repaints from ZirkelCanvas.
*/
public class TrackObject extends ConstructionObject implements PointonObject {
static Count N = new Count();
public PointObject PM;
public ConstructionObject O, P;
public int PMax = 16, PN;
public ConstructionObject PO[] = new ConstructionObject[PMax];
public boolean Filled = false;
public boolean Discrete = false;
public int Type = 0;
@Override
public void setFilled(final boolean flag) {
Filled = flag;
}
@Override
public boolean isFilled() {
return Filled;
}
public TrackObject(final Construction c) {
super(c);
}
public TrackObject(final Construction c, final ConstructionObject p,
final ConstructionObject po[], final int pn,
final ConstructionObject o, final PointObject pm) {
super(c);
P = p;
PN = pn;
for (int i = 0; i < PN; i++) {
PO[i] = po[i];
}
O = o;
PM = pm;
validate();
updateText();
}
@Override
public void setDefaults() {
setShowName(Global.getParameter("options.locus.shownames", false));
setShowValue(Global.getParameter("options.locus.showvalues", false));
setColor(Global.getParameter("options.locus.color", 0), Global
.getParameter("options.locus.pcolor", (ExpressionColor) null, this));
setColorType(Global.getParameter("options.locus.colortype", 0));
setFilled(Global.getParameter("options.locus.filled", false));
setHidden(Cn.Hidden);
setObtuse(Cn.Obtuse);
setSolid(Cn.Solid);
setLarge(Cn.LargeFont);
setBold(Cn.BoldFont);
}
@Override
public void setTargetDefaults() {
setShowName(Global.getParameter("options.locus.shownames", false));
setShowValue(Global.getParameter("options.locus.showvalues", false));
setColor(Global.getParameter("options.locus.color", 0), Global
.getParameter("options.locus.pcolor", (ExpressionColor) null, this));
setColorType(Global.getParameter("options.locus.colortype", 0));
setFilled(Global.getParameter("options.locus.filled", false));
}
@Override
public String getTag() {
return "Track";
}
@Override
public int getN() {
return N.next();
}
@Override
public void updateText() {
if (PM != null) {
setText(text3(Global.name("text.track"), P.getName(), PM.getName(),
O.getName()));
} else {
setText(text2(Global.name("text.trackof"), P.getName(), O.getName()));
}
}
// Update only from ZirkelCanvas, when needed.
@Override
public void validate() {
}
public PolygonFiller PF = null;
// Paint the track
@Override
public void paint(final MyGraphics g, final ZirkelCanvas zc) {
if (!Valid || mustHide(zc)) {
return;
}
Coordinates C;
Enumeration e = V.elements();
double c0, r0, c, r;
if (!Discrete && isStrongSelected() && g instanceof MainGraphics) {
final PolygonDrawer pm = new PolygonDrawer(false,g, this);
pm.useAsMarker();
if (e.hasMoreElements()) {
C = (Coordinates) e.nextElement();
c0 = zc.col(C.X);
r0 = zc.row(C.Y);
pm.drawTo(c0, r0);
while (e.hasMoreElements()) {
C = (Coordinates) e.nextElement();
c = zc.col(C.X);
r = zc.row(C.Y);
if (Math.abs(c0 - c) < 100 && Math.abs(r0 - r) < 100) {
pm.drawTo(c, r);
} else {
if (isFilled()) {
PF.finishPolygon();
}
pm.finishPolygon();
}
c0 = c;
r0 = r;
}
pm.finishPolygon();
}
}
e = V.elements();
if (indicated()) {
final boolean sel = P.indicated();
P.setIndicated(true);
g.setColor(P);
P.setIndicated(sel);
} else {
g.setColor(this);
}
if (Discrete) {
final int col = getColorIndex();
final int th = getColorType();
if (e.hasMoreElements()) {
C = (Coordinates) e.nextElement();
c0 = zc.col(C.X);
r0 = zc.row(C.Y);
PF.drawTo(c0, r0);
while (e.hasMoreElements()) {
C = (Coordinates) e.nextElement();
c = zc.col(C.X);
r = zc.row(C.Y);
if (Math.abs(c0 - c) < 100 && Math.abs(r0 - r) < 100) {
if (isFilled()) {
PF.drawTo(c, r);
}
} else {
if (isFilled()) {
PF.finishPolygon();
}
}
if (C.Color >= 0) {
setColor(C.Color);
}
if (C.Thickness >= 0) {
setColorType(C.Thickness);
}
PointObject.drawPoint(g, zc, this, C.X, C.Y, Type);
setColor(col);
setColorType(th);
c0 = c;
r0 = r;
}
if (isFilled()) {
PF.finishPolygon();
}
}
for (int i = 0; i < PN; i++) {
e = VO[i].elements();
g.setColor(PO[i]);
if (e.hasMoreElements()) {
C = (Coordinates) e.nextElement();
while (e.hasMoreElements()) {
C = (Coordinates) e.nextElement();
if (C.Color >= 0) {
setColor(C.Color);
}
if (C.Thickness >= 0) {
setColorType(C.Thickness);
}
PointObject.drawPoint(g, zc, this, C.X, C.Y, Type);
setColor(col);
setColorType(th);
}
}
}
} else {
PolygonDrawer pd = new PolygonDrawer(false,g, this);
if (isFilled()) {
if (PF == null) {
PF = new PolygonFiller(g, this);
}
PF.start();
PF.setGraphics(g);
}
if (e.hasMoreElements()) {
C = (Coordinates) e.nextElement();
c0 = zc.col(C.X);
r0 = zc.row(C.Y);
pd.drawTo(c0, r0);
while (e.hasMoreElements()) {
C = (Coordinates) e.nextElement();
c = zc.col(C.X);
r = zc.row(C.Y);
if (Math.abs(c0 - c) < 100 && Math.abs(r0 - r) < 100) {
if (isFilled()) {
PF.drawTo(c, r);
}
pd.drawTo(c, r);
} else {
if (isFilled()) {
PF.finishPolygon();
}
pd.finishPolygon();
}
c0 = c;
r0 = r;
}
if (isFilled()) {
PF.finishPolygon();
}
pd.finishPolygon();
}
for (int i = 0; i < PN; i++) {
e = VO[i].elements();
g.setColor(PO[i]);
pd = new PolygonDrawer(false,g, PO[i]);
if (e.hasMoreElements()) {
C = (Coordinates) e.nextElement();
c0 = zc.col(C.X);
r0 = zc.row(C.Y);
while (e.hasMoreElements()) {
C = (Coordinates) e.nextElement();
c = zc.col(C.X);
r = zc.row(C.Y);
if (Math.abs(c0 - c) < 100 && Math.abs(r0 - r) < 100) {
pd.drawTo(c, r);
} else {
pd.finishPolygon();
}
c0 = c;
r0 = r;
}
}
pd.finishPolygon();
}
}
}
public double getSum(final double x, final double y)
throws ConstructionException {
if (!Valid) {
throw new ConstructionException("");
}
double sum = 0;
boolean started = false;
double x0 = 0, y0 = 0;
final Enumeration e = V.elements();
while (e.hasMoreElements()) {
final Coordinates C = (Coordinates) e.nextElement();
if (started) {
sum += (-(C.X - x) * (y0 - y) + (C.Y - y) * (x0 - x)) / 2;
}
x0 = C.X;
y0 = C.Y;
started = true;
}
return sum;
}
public double getSum() throws ConstructionException {
if (!Valid) {
throw new ConstructionException("");
}
double sum = 0;
boolean started = false;
double x0 = 0, y0 = 0, x = 0, y = 0;
final Enumeration e = V.elements();
while (e.hasMoreElements()) {
final Coordinates C = (Coordinates) e.nextElement();
if (started) {
sum += (-(C.X - x) * (y0 - y) + (C.Y - y) * (x0 - x)) / 2;
} else {
x = C.X;
y = C.Y;
}
x0 = C.X;
y0 = C.Y;
started = true;
}
return sum;
}
public double getLength() throws ConstructionException {
if (!Valid) {
throw new ConstructionException("");
}
double sum = 0;
boolean started = false;
double x0 = 0, y0 = 0;
final Enumeration e = V.elements();
while (e.hasMoreElements()) {
final Coordinates C = (Coordinates) e.nextElement();
if (started) {
sum += Math.sqrt((C.X - x0) * (C.X - x0) + (C.Y - y0)
* (C.Y - y0));
}
x0 = C.X;
y0 = C.Y;
started = true;
}
return sum;
}
@Override
public void printArgs(final XmlWriter xml) {
super.printArgs(xml);
if (PM != null) {
xml.printArg("point", PM.getName());
}
xml.printArg("on", O.getName());
xml.printArg("track", P.getName());
xml.printArg("dmin", "" + DMin);
for (int i = 0; i < PN; i++) {
xml.printArg("track" + i, PO[i].getName());
}
if (Filled) {
xml.printArg("filled", "true");
}
if (Fixed) {
xml.printArg("fixed", "true");
}
if (Discrete) {
xml.printArg("discrete", "true");
}
printType(xml);
}
public void printType(final XmlWriter xml) {
if (Type != 0) {
switch (Type) {
case PointObject.DIAMOND:
xml.printArg("shape", "diamond");
break;
case PointObject.CIRCLE:
xml.printArg("shape", "circle");
break;
case PointObject.DOT:
xml.printArg("shape", "dot");
break;
case PointObject.CROSS:
xml.printArg("shape", "cross");
break;
case PointObject.DCROSS:
xml.printArg("shape", "dcross");
break;
}
}
}
@Override
public Enumeration depending() {
super.depending();
if (PM != null) {
DL.add(PM);
}
DL.add(O);
DL.add(P);
for (int i = 0; i < PN; i++) {
DL.add(PO[i]);
}
return DL.elements();
}
@Override
public boolean equals(final ConstructionObject o) {
return false;
}
@Override
public void translate() {
if (PM != null) {
PM = (PointObject) PM.getTranslation();
}
O = O.getTranslation();
P = P.getTranslation();
}
@Override
public boolean maybeTransparent() {
return false;
}
public Vector V = new Vector();
public Vector VO[] = new Vector[PMax];
// Mainly to select the track for delete
@Override
public boolean nearto(final int x, final int y, final ZirkelCanvas zc) {
if (!displays(zc)) {
return false;
}
final int size = (int) zc.selectionSize();
final Enumeration e = V.elements();
while (e.hasMoreElements()) {
final Coordinates c = (Coordinates) e.nextElement();
final double col = zc.col(c.X), row = zc.row(c.Y);
if (Math.max(Math.abs(col - x), Math.abs(row - y)) < size) {
return true;
}
}
return false;
}
@Override
public boolean onlynearto(final int c, final int r, final ZirkelCanvas zc) {
return false;
}
public double da = 0;
double oldx, oldy;
public double X, Y, DX, DY;
double XO[] = new double[PMax], YO[] = new double[PMax],
DXO[] = new double[PMax], DYO[] = new double[PMax];
int Omit = 1;
public double mod(final double x) {
if (x >= Math.PI) {
return x - 2 * Math.PI;
}
if (x < -Math.PI) {
return x + 2 * Math.PI;
}
return x;
}
public boolean DontProject = false;
public double DMin = 0.005;
/**
* Complicated procedure to recompute the automatic track. In principle, a
* moving point moves on some object, the coordinates of the tracked points
* or the intersections of the tracked lines are stored, as well as the
* positions of the moved point.
*
* But if the tracked point gets invalid, the movement reverses and the
* interesections change.
*
* Moreover, there is a list of secondary tracked objects.
*
* @param zc
*/
public synchronized void docompute(final ZirkelCanvas zc) {
V = new Vector();
for (int i = 0; i < PN; i++) {
VO[i] = new Vector();
}
// Running on a circle:
if (O instanceof PrimitiveCircleObject) {
zc.getConstruction().shouldSwitch(false);
final PrimitiveCircleObject c = (PrimitiveCircleObject) O;
final double x = c.getX(), y = c.getY(), r = c.getR();
PM.project(c);
double amin = 0, amax = 0, astart = 0, anull = 0;
final double dmax = 0.5;
boolean range = false;
if (c.hasRange()) {
range = true;
final double a1 = c.getA1();
final double a2 = c.getA2();
double d = a2 - a1;
while (d < 0) {
d += 2 * Math.PI;
}
while (d >= 2 * Math.PI) {
d -= 2 * Math.PI;
}
amin = astart = -d / 2;
amax = d / 2;
anull = (a1 + a2) / 2;
} else {
amin = astart = -Math.PI * 0.9999;
amax = Math.PI * 0.9999;
}
double a = astart;
PM.move(x + r * Math.cos(anull + a), y + r * Math.sin(anull + a));
PM.project(c);
zc.getConstruction().validate(this, PM);
zc.resetSum();
double x1 = 0, y1 = 0;
boolean started = false;
if (P.valid()) {
zc.getConstruction().shouldSwitch(true);
if (P instanceof PointObject) {
final PointObject p = (PointObject) P;
x1 = p.getX();
y1 = p.getY();
addCoordinates(V, P, x1, y1);
started = true;
} else if (P instanceof PrimitiveLineObject) {
final PrimitiveLineObject L = (PrimitiveLineObject) P;
X = L.getX();
Y = L.getY();
DX = L.getDX();
DY = L.getDY();
started = true;
}
}
final boolean startedO[] = new boolean[PMax];
for (int i = 0; i < PN; i++) {
startedO[i] = false;
}
final long time = System.currentTimeMillis();
addSecondary(startedO);
final double dmin = DMin;
if (da < 1e-10 || da > zc.dx(1)) {
da = zc.dx(1) / 10;
}
double aold = a;
while (true) {
a = a + da;
boolean Break = false;
if ((!started || range) && a >= amax) {
a = amax;
Break = true;
} else if ((!started || range) && a <= amin) {
a = amin;
Break = true;
} else if (started && da > 0) {
if ((mod(aold - astart) < 0 && mod(a - astart) >= 0)
&& !zc.getConstruction().haveSwitched()) {
Break = true;
a = astart;
}
}
aold = a;
PM.move(x + r * Math.cos(anull + a), y + r
* Math.sin(anull + a));
PM.project(c);
zc.getConstruction().validate(this, PM);
if (P.valid()) {
if (!started) {
zc.getConstruction().shouldSwitch(true);
astart = a;
}
double x2 = 0, y2 = 0;
boolean valid = false;
if (P instanceof PointObject) {
final PointObject p = (PointObject) P;
x2 = p.getX();
y2 = p.getY();
valid = true;
} else if (P instanceof PrimitiveLineObject) {
final PrimitiveLineObject L = (PrimitiveLineObject) P;
if (!started) {
X = L.getX();
Y = L.getY();
DX = L.getDX();
DY = L.getDY();
} else {
double xx, yy, dx, dy;
xx = L.getX();
yy = L.getY();
dx = L.getDX();
dy = L.getDY();
final double det = dx * DY - dy * DX;
if (Math.sqrt(Math.abs(det)) > 1e-9) {
final double h = (-(X - xx) * DY + DX
* (Y - yy))
/ (-det);
x2 = xx + h * dx;
y2 = yy + h * dy;
valid = true;
}
X = xx;
Y = yy;
DX = dx;
DY = dy;
}
}
final double dist = zc.dCenter(x2, y2);
final boolean different = ((int) zc.col(x1) != (int) zc
.col(x2) || (int) zc.row(y1) != (int) zc.row(y2));
if (valid && different) {
addCoordinates(V, P, x2, y2);
}
final double dp = Math.abs(x2 - x1) + Math.abs(y2 - y1);
da = updateDA(da, valid, dist, dp, dmin, dmax, zc);
x1 = x2;
y1 = y2;
started = true;
} else if (started) {
da = -da;
}
addSecondary(startedO);
if (Break || System.currentTimeMillis() - time > 1000) {
break;
}
}
// System.out.println("Points "+V.size()+" Time "+(System.currentTimeMillis()-time));
} // Running on a line:
else if (O instanceof PrimitiveLineObject) {
zc.getConstruction().shouldSwitch(false);
final PrimitiveLineObject l = (PrimitiveLineObject) O;
PM.project(l);
final double lx = l.getX(), ly = l.getY(), ldx = l.getDX(), ldy = l
.getDY();
double amin = 0, amax = 0, astart = 0;
double dmax = 0.5;
boolean range = false;
if (l instanceof RayObject) {
amin = astart = 0;
amax = Math.PI * 0.9999;
range = true;
} else if (l instanceof SegmentObject) {
amin = astart = 0;
final double r = ((SegmentObject) l).getLength();
dmax = r / 20;
amax = Math.atan(r) * 2;
range = true;
} else {
amin = astart = -Math.PI * 0.99999;
amax = Math.PI * 0.9999;
}
double a = astart;
double hd = Math.tan(mod(a) / 2);
PM.move(lx + hd * ldx, ly + hd * ldy);
PM.project(l);
zc.getConstruction().validate(this, PM);
zc.resetSum();
double x1 = 0, y1 = 0;
boolean started = false;
if (P.valid()) {
zc.getConstruction().shouldSwitch(true);
if (P instanceof PointObject) {
final PointObject p = (PointObject) P;
x1 = p.getX();
y1 = p.getY();
addCoordinates(V, P, x1, y1);
started = true;
} else if (P instanceof PrimitiveLineObject) {
final PrimitiveLineObject L = (PrimitiveLineObject) P;
X = L.getX();
Y = L.getY();
DX = L.getDX();
DY = L.getDY();
started = true;
}
}
final boolean startedO[] = new boolean[PMax];
for (int i = 0; i < PN; i++) {
startedO[i] = false;
}
final long time = System.currentTimeMillis();
addSecondary(startedO);
final double dmin = DMin;
if (da < 1e-10 || da > zc.dx(1)) {
da = zc.dx(1) / 10;
}
double aold = a;
while (true) {
a = a + da;
boolean Break = false;
if ((!started || range) && a >= amax) {
a = amax;
Break = true;
} else if ((!started || range) && a <= amin) {
a = amin;
Break = true;
} else if (started && da > 0) {
if ((mod(aold - astart) < 0 && mod(a - astart) >= 0)
&& !zc.getConstruction().haveSwitched()) {
Break = true;
a = astart;
}
}
aold = a;
hd = Math.tan(mod(a) / 2);
PM.move(lx + hd * ldx, ly + hd * ldy);
PM.project(l);
zc.getConstruction().validate(this, PM);
if (P.valid()) {
if (!started) {
zc.getConstruction().shouldSwitch(true);
astart = a;
}
double x2 = 0, y2 = 0;
boolean valid = false;
if (P instanceof PointObject) {
final PointObject p = (PointObject) P;
x2 = p.getX();
y2 = p.getY();
valid = true;
} else if (P instanceof PrimitiveLineObject) {
final PrimitiveLineObject L = (PrimitiveLineObject) P;
if (!started) {
X = L.getX();
Y = L.getY();
DX = L.getDX();
DY = L.getDY();
} else {
double xx, yy, dx, dy;
xx = L.getX();
yy = L.getY();
dx = L.getDX();
dy = L.getDY();
final double det = dx * DY - dy * DX;
if (Math.sqrt(Math.abs(det)) > 1e-9) {
final double h = (-(X - xx) * DY + DX
* (Y - yy))
/ (-det);
x2 = xx + h * dx;
y2 = yy + h * dy;
valid = true;
}
X = xx;
Y = yy;
DX = dx;
DY = dy;
}
}
final double dist = zc.dCenter(x2, y2);
final boolean different = ((int) zc.col(x1) != (int) zc
.col(x2) || (int) zc.row(y1) != (int) zc.row(y2));
if (valid && different) {
addCoordinates(V, P, x2, y2);
}
final double dp = Math.abs(x2 - x1) + Math.abs(y2 - y1);
da = updateDA(da, valid, dist, dp, dmin, dmax, zc);
x1 = x2;
y1 = y2;
started = true;
} else if (started) {
da = -da;
}
addSecondary(startedO);
if (Break || System.currentTimeMillis() - time > 1000) {
break;
}
}
} // Running an expression slider:
else if (O instanceof ExpressionObject) {
zc.getConstruction().shouldSwitch(false);
final ExpressionObject eo = (ExpressionObject) O;
if (!eo.isSlider()) {
return;
}
double amin = 0, amax = 0, astart = 0;
double dmax = 0.5;
boolean range = false;
amin = astart = 0;
final double r = 1;
dmax = r / 20;
amax = r;
range = true;
double a = astart;
double hd = a;
eo.setSliderPosition(0);
zc.getConstruction().validate(P, null);
zc.resetSum();
double x1 = 0, y1 = 0;
boolean started = false;
if (P.valid()) {
zc.getConstruction().shouldSwitch(true);
if (P instanceof PointObject) {
final PointObject p = (PointObject) P;
x1 = p.getX();
y1 = p.getY();
addCoordinates(V, P, x1, y1);
started = true;
} else if (P instanceof PrimitiveLineObject) {
final PrimitiveLineObject L = (PrimitiveLineObject) P;
X = L.getX();
Y = L.getY();
DX = L.getDX();
DY = L.getDY();
started = true;
}
}
final boolean startedO[] = new boolean[PMax];
for (int i = 0; i < PN; i++) {
startedO[i] = false;
}
final long time = System.currentTimeMillis();
addSecondary(startedO);
final double dmin = DMin;
if (da < 1e-10 || da > zc.dx(1)) {
da = zc.dx(1) / 10;
}
double aold = a;
double x2 = 0, y2 = 0;
while (true) {
a = a + da;
boolean Break = false;
if ((!started || range) && a >= amax) {
a = amax;
Break = true;
} else if ((!started || range) && a <= amin) {
a = amin;
Break = true;
} else if (started && da > 0) {
if ((mod(aold - astart) < 0 && mod(a - astart) >= 0)
&& !zc.getConstruction().haveSwitched()) {
Break = true;
a = astart;
}
}
aold = a;
hd = a;
eo.setSliderPosition(hd);
zc.getConstruction().validate(P, null);
if (P.valid()) {
if (!started) {
zc.getConstruction().shouldSwitch(true);
astart = a;
}
boolean valid = false;
if (P instanceof PointObject) {
final PointObject p = (PointObject) P;
x2 = p.getX();
y2 = p.getY();
valid = true;
} else if (P instanceof PrimitiveLineObject) {
final PrimitiveLineObject L = (PrimitiveLineObject) P;
if (!started) {
X = L.getX();
Y = L.getY();
DX = L.getDX();
DY = L.getDY();
} else {
double xx, yy, dx, dy;
xx = L.getX();
yy = L.getY();
dx = L.getDX();
dy = L.getDY();
final double det = dx * DY - dy * DX;
if (Math.sqrt(Math.abs(det)) > 1e-9) {
final double h = (-(X - xx) * DY + DX
* (Y - yy))
/ (-det);
x2 = xx + h * dx;
y2 = yy + h * dy;
valid = true;
}
X = xx;
Y = yy;
DX = dx;
DY = dy;
}
}
final double dist = zc.dCenter(x2, y2);
final boolean different = ((int) zc.col(x1) != (int) zc
.col(x2) || (int) zc.row(y1) != (int) zc.row(y2));
if (valid && different) {
addCoordinates(V, P, x2, y2);
}
final double dp = Math.abs(x2 - x1) + Math.abs(y2 - y1);
da = updateDA(da, valid, dist, dp, dmin, dmax, zc);
x1 = x2;
y1 = y2;
started = true;
} else if (started) {
addCoordinates(V, P, x2, y2);
da = -da;
}
addSecondary(startedO);
if (Break || System.currentTimeMillis() - time > 1000) {
break;
}
}
}
}
// This is the update function. It is a time consuming moving of
// the point P on the object O. The function is a copy from the
// same function in ObjectTracker.
public synchronized void compute(final ZirkelCanvas zc) {
if (Fixed && !StartFix) {
return;
}
StartFix = false;
double x = 0, y = 0;
if (PM != null) {
x = PM.getX();
y = PM.getY();
} else if (O instanceof ExpressionObject
&& ((ExpressionObject) O).isSlider()) {
x = ((ExpressionObject) O).getSliderPosition();
}
zc.getConstruction().clearSwitches();
zc.getConstruction().shouldSwitch(true);
DontProject = true;
docompute(zc);
DontProject = false;
zc.getConstruction().shouldSwitch(false);
zc.getConstruction().clearSwitches();
if (PM != null) {
PM.move(x, y);
} else if (O instanceof ExpressionObject
&& ((ExpressionObject) O).isSlider()) {
((ExpressionObject) O).setSliderPosition(x);
}
final Enumeration e = V.elements();
if (e.hasMoreElements()) {
Coordinates c = (Coordinates) e.nextElement();
x = c.X;
y = c.Y;
double col1 = zc.col(c.X);
double row1 = zc.row(c.Y);
while (e.hasMoreElements()) {
c = (Coordinates) e.nextElement();
final double col2 = zc.col(c.X);
final double row2 = zc.row(c.Y);
c.flag = Math.abs(col2 - col1) < 100
&& Math.abs(row2 - row1) < 100;
row1 = row2;
col1 = col2;
}
}
zc.dovalidate();
}
public void addSecondary(final boolean startedO[]) {
for (int i = 0; i < PN; i++) {
if (!PO[i].valid()) {
continue;
}
if (PO[i] instanceof PointObject) {
final PointObject p = (PointObject) PO[i];
addCoordinates(VO[i], p, p.getX(), p.getY());
VO[i].addElement(new Coordinates(p.getX(), p.getY()));
} else if (PO[i] instanceof PrimitiveLineObject) {
final PrimitiveLineObject L = (PrimitiveLineObject) PO[i];
if (!startedO[i]) {
XO[i] = L.getX();
YO[i] = L.getY();
DXO[i] = L.getDX();
DYO[i] = L.getDY();
startedO[i] = true;
} else {
double xx, yy, dx, dy;
xx = L.getX();
yy = L.getY();
dx = L.getDX();
dy = L.getDY();
final double det = dx * DYO[i] - dy * DXO[i];
if (Math.sqrt(Math.abs(det)) > 1e-9) {
final double h = (-(XO[i] - xx) * DYO[i] + DXO[i]
* (YO[i] - yy))
/ (-det);
XO[i] = xx;
YO[i] = yy;
DXO[i] = dx;
DYO[i] = dy;
addCoordinates(VO[i], PO[i], xx + h * dx, yy + h * dy);
}
}
}
}
}
public void addCoordinates(final Vector v, final ConstructionObject p,
final double x, final double y) {
final Coordinates C = new Coordinates(x, y);
if (Discrete && p instanceof PointObject) {
C.Color = p.getColorIndex();
C.Thickness = p.getColorType();
}
v.addElement(C);
}
public void addCoordinates(final Vector v, final ConstructionObject p) {
v.addElement(new Coordinates(p.getX(), p.getY()));
}
public void addCoordinates(final Vector v, final double x, final double y) {
v.addElement(new Coordinates(x, y));
}
public double StepSize = 5;
public double updateDA(double da, final boolean valid, final double dist,
final double dp, final double dmin, final double dmax,
final ZirkelCanvas zc) {
if (V.size() > 0 && valid) {
if (dist < 1.2) {
if (dp > zc.dx(StepSize)) {
da /= 2;
} else if (dp < zc.dx(StepSize / 2)) {
da *= 2;
}
if (da > 0 && da < dmin) {
da = dmin;
} else if (da < 0 && da > -dmin) {
da = -dmin;
}
if (da > dmax) {
da = dmax;
} else if (da < -dmax) {
da = -dmax;
}
} else {
if (dp > zc.dx(StepSize * 10)) {
da /= 2;
} else if (dp < zc.dx(StepSize * 5)) {
da *= 2;
}
if (da > 0 && da < dmin) {
da = dmin;
} else if (da < 0 && da > -dmin) {
da = -dmin;
}
if (da > dmax) {
da = dmax;
} else if (da < -dmax) {
da = -dmax;
}
}
}
return da;
}
@Override
public boolean hasUnit() {
return false;
}
/**
* Project a point to this object.
*/
public synchronized void project(final PointObject P) {
if (DontProject) {
return;
}
final Enumeration e = V.elements();
double x = 0, y = 0, x0 = 0, y0 = 0, dmin = 0;
boolean started = false;
while (e.hasMoreElements()) {
final Coordinates c = (Coordinates) e.nextElement();
final double x1 = c.X;
final double y1 = c.Y;
if (!started) {
dmin = Math.sqrt((P.getX() - x1) * (P.getX() - x1)
+ (P.getY() - y1) * (P.getY() - y1));
x0 = x = x1;
y0 = y = y1;
started = true;
} else {
if (c.flag) {
double h = (x1 - x0) * (x1 - x0) + (y1 - y0) * (y1 - y0);
if (h < 1e-10) {
h = 1e-10;
}
double g = (P.getX() - x0) * (x1 - x0) + (P.getY() - y0)
* (y1 - y0);
if (g < 0) {
g = 0;
}
if (g > h) {
g = h;
}
final double x2 = x0 + g / h * (x1 - x0), y2 = y0 + g / h
* (y1 - y0);
final double d = Math.sqrt((P.getX() - x2)
* (P.getX() - x2) + (P.getY() - y2)
* (P.getY() - y2));
if (d < dmin) {
dmin = d;
x = x2;
y = y2;
}
}
x0 = x1;
y0 = y1;
}
}
if (started) {
P.setXY(x, y);
P.Valid = true;
} else {
P.Valid = false;
}
}
public synchronized int getDistance(final PointObject P) {
final Enumeration e = V.elements();
double x = 0, y = 0, x0 = 0, y0 = 0, dmin = 0;
boolean started = false;
while (e.hasMoreElements()) {
final Coordinates c = (Coordinates) e.nextElement();
final double x1 = c.X;
final double y1 = c.Y;
if (!started) {
dmin = Math.sqrt((P.getX() - x1) * (P.getX() - x1)
+ (P.getY() - y1) * (P.getY() - y1));
x0 = x = x1;
y0 = y = y1;
started = true;
} else {
if (c.flag) {
double h = (x1 - x0) * (x1 - x0) + (y1 - y0) * (y1 - y0);
if (h < 1e-10) {
h = 1e-10;
}
double g = (P.getX() - x0) * (x1 - x0) + (P.getY() - y0)
* (y1 - y0);
if (g < 0) {
g = 0;
}
if (g > h) {
g = h;
}
final double x2 = x0 + g / h * (x1 - x0), y2 = y0 + g / h
* (y1 - y0);
final double d = Math.sqrt((P.getX() - x2)
* (P.getX() - x2) + (P.getY() - y2)
* (P.getY() - y2));
if (d < dmin) {
dmin = d;
x = x2;
y = y2;
}
}
x0 = x1;
y0 = y1;
}
}
if (started) {
P.Valid = true;
final double dd = Math.sqrt((P.getX() - x) * (P.getX() - x)
+ (P.getY() - y) * (P.getY() - y));
return (int) Math.round(dd * Cn.getPixel());
} else {
P.Valid = false;
}
return Integer.MAX_VALUE;
}
@Override
public String getDisplayValue() {
try {
return "" + getSum();
} catch (final Exception e) {
return "???";
}
}
public void project(final PointObject P, final double alpha) {
project(P);
}
@Override
public boolean canDisplayName() {
return false;
}
public boolean Fixed = false, StartFix;
@Override
public boolean isFixed() {
return Fixed;
}
@Override
public void setFixed(final boolean f) {
Fixed = f;
if (Fixed) {
StartFix = true;
}
}
public void setDMin(final double dmin) {
DMin = dmin;
}
public double getDMin() {
return DMin;
}
@Override
public int getType() {
return Type;
}
@Override
public void setType(final int type) {
Type = type;
}
public boolean isDiscrete() {
return Discrete;
}
public void setDiscrete(final boolean discrete) {
Discrete = discrete;
}
public boolean canInteresectWith(final ConstructionObject o) {
return true;
}
public void repulse(final PointObject P) {
project(P);
}
}
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