/**
* Gets the bounds of the label text
*
* @param g2 the graphics context
* @return the bounds of the label text
*/
private Rectangle2D getLabelBounds() {
BufferedImage dummy = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB);
// need a dummy image to get a Graphics to
// measure the size
Graphics2D g2 = (Graphics2D) dummy.getGraphics();
label.setText("<html>" + labelText + "</html>");
label.setFont(g2.getFont());
Dimension d = label.getPreferredSize();
label.setBounds(0, 0, d.width, d.height);
Line2D line = getConnectionPoints();
Point2D control = getControlPoint();
double x = control.getX() / 2 + line.getX1() / 4 + line.getX2() / 4;
double y = control.getY() / 2 + line.getY1() / 4 + line.getY2() / 4;
final int GAP = 3;
if (line.getY1() == line.getY2()) x -= d.getWidth() / 2;
else if (line.getY1() <= line.getY2()) x += GAP;
else x -= d.getWidth() + GAP;
if (line.getX1() == line.getX2()) y += d.getHeight() / 2;
else if (line.getX1() <= line.getX2()) y -= d.getHeight() + GAP;
else y += GAP;
if (Math.abs(line.getX1() - line.getX2()) >= Math.abs(line.getY1() - line.getY2())) {
x = x - d.getWidth() / 2;
}
if (Math.abs(line.getX1() - line.getX2()) <= Math.abs(line.getY1() - line.getY2())) {
y = y - d.getHeight() / 2;
}
return new Rectangle2D.Double(x, y, d.width, d.height);
}
/**
* Function to check if a direction and frame intersects
*
* @param direction
* @param frame
* @return
*/
public boolean intersects(Line2D direction, Line2D frame) {
double d =
(frame.getY2() - frame.getY1()) * (direction.getX2() - direction.getX1())
- (frame.getX2() - frame.getX1()) * (direction.getY2() - direction.getY1());
double n_a =
(frame.getX2() - frame.getX1()) * (direction.getY1() - frame.getY1())
- (frame.getY2() - frame.getY1()) * (direction.getX1() - frame.getX1());
double n_b =
(direction.getX2() - direction.getX1()) * (direction.getY1() - frame.getY1())
- (direction.getY2() - direction.getY1()) * (direction.getX1() - frame.getX1());
if (d == 0) return false;
double ua = n_a / d;
double ub = n_b / d;
if (ua >= 0d && ua <= 1d && ub >= 0d && ub <= 1d) {
intersection = new Point2D.Double();
intersection.setLocation(
direction.getX1() + (ua * (direction.getX2() - direction.getX1())),
direction.getY1() + (ua * (direction.getY2() - direction.getY1())));
return true;
}
return false;
}
public LineSegmentIntersection(Line2D segment, Line2D lineB) {
final double x1 = segment.getX1();
final double y1 = segment.getY1();
final double x2 = segment.getX2();
final double y2 = segment.getY2();
final double x3 = lineB.getX1();
final double y3 = lineB.getY1();
final double x4 = lineB.getX2();
final double y4 = lineB.getY2();
final double den = (y4 - y3) * (x2 - x1) - (x4 - x3) * (y2 - y1);
if (den == 0) {
inter = null;
} else {
final double uA1 = (x4 - x3) * (y1 - y3) - (y4 - y3) * (x1 - x3);
final double uA = uA1 / den;
final double x = x1 + uA * (x2 - x1);
final double y = y1 + uA * (y2 - y1);
if (uA >= 0 && uA <= 1) {
inter = new Point2D.Double(x, y);
} else {
inter = null;
}
}
}
/**
* Gets the control point for the quadratic spline.
*
* @return the control point
*/
private Point2D getControlPoint() {
Line2D line = getConnectionPoints();
double t = Math.tan(Math.toRadians(angle));
double dx = (line.getX2() - line.getX1()) / 2;
double dy = (line.getY2() - line.getY1()) / 2;
return new Point2D.Double(
(line.getX1() + line.getX2()) / 2 + t * dy, (line.getY1() + line.getY2()) / 2 - t * dx);
}
public Line2D evaluate(Line2D v0, Line2D v1, float fraction) {
double x1 = v0.getX1() + ((v1.getX1() - v0.getX1()) * fraction);
double y1 = v0.getY1() + ((v1.getY1() - v0.getY1()) * fraction);
double x2 = v0.getX2() + ((v1.getX2() - v0.getX2()) * fraction);
double y2 = v0.getY2() + ((v1.getY2() - v0.getY2()) * fraction);
Line2D value = (Line2D) v0.clone();
value.setLine(x1, y1, x2, y2);
return value;
}
/**
* Gets the distance and point along a Line2D at a specified y. If the Line2D is horizontal this
* returns null.
*
* <p>Based on a simplification of algorithm described by Paul Burke at
* http://local.wasp.uwa.edu.au/~pbourke/geometry/lineline2d/ (April 1986)
*
* @param line the line
* @param y the value of y
* @return Object[] {fractional distance from line end, Point2D}
*/
private Object[] getDistanceAndPointAtY(Line2D line, double y) {
double dy = line.getY2() - line.getY1();
// if line is horizontal, return null
if (dy == 0) return null;
// parametric eqn of line: P = P1 + u(P2 - P1)
double u = (y - line.getY1()) / dy;
double x = line.getX1() + u * (line.getX2() - line.getX1());
return new Object[] {u, new Point2D.Double(x, y)};
}
/**
* Gets the distance and point along a Line2D at a specified x. If the Line2D is vertical this
* returns null.
*
* <p>Based on a simplification of algorithm described by Paul Burke at
* http://local.wasp.uwa.edu.au/~pbourke/geometry/lineline2d/ (April 1986)
*
* @param line the line
* @param x the value of x
* @return Object[] {fractional distance from line end, Point2D}
*/
private Object[] getDistanceAndPointAtX(Line2D line, double x) {
double dx = line.getX2() - line.getX1();
// if line is vertical, return null
if (dx == 0) return null;
// parametric eqn of line: P = P1 + u(P2 - P1)
double u = (x - line.getX1()) / dx;
double y = line.getY1() + u * (line.getY2() - line.getY1());
return new Object[] {u, new Point2D.Double(x, y)};
}
/**
* Creates and returns a line that is perpendicular to the specified line.
*
* @param line the reference line ({@code null} not permitted).
* @param b the base point, expressed as a percentage along the length of the reference line.
* @param size the size or length of the perpendicular line.
* @param opposingPoint an opposing point, to define which side of the reference line the
* perpendicular line will extend ({@code null} not permitted).
* @return The perpendicular line.
*/
public static Line2D createPerpendicularLine(
Line2D line, double b, double size, Point2D opposingPoint) {
double dx = line.getX2() - line.getX1();
double dy = line.getY2() - line.getY1();
double length = Math.sqrt(dx * dx + dy * dy);
double pdx = dy / length;
double pdy = -dx / length;
int ccw = line.relativeCCW(opposingPoint);
Point2D pt1 = new Point2D.Double(line.getX1() + b * dx, line.getY1() + b * dy);
Point2D pt2 = new Point2D.Double(pt1.getX() - ccw * size * pdx, pt1.getY() - ccw * size * pdy);
return new Line2D.Double(pt1, pt2);
}
/**
* Creates a region surrounding a line segment by 'widening' the line segment. A typical use for
* this method is the creation of a 'clickable' region for a line that is displayed on-screen.
*
* @param line the line (<code>null</code> not permitted).
* @param width the width of the region.
* @return A region that surrounds the line.
*/
public static Shape createLineRegion(final Line2D line, final float width) {
final GeneralPath result = new GeneralPath();
final float x1 = (float) line.getX1();
final float x2 = (float) line.getX2();
final float y1 = (float) line.getY1();
final float y2 = (float) line.getY2();
if ((x2 - x1) != 0.0) {
final double theta = Math.atan((y2 - y1) / (x2 - x1));
final float dx = (float) Math.sin(theta) * width;
final float dy = (float) Math.cos(theta) * width;
result.moveTo(x1 - dx, y1 + dy);
result.lineTo(x1 + dx, y1 - dy);
result.lineTo(x2 + dx, y2 - dy);
result.lineTo(x2 - dx, y2 + dy);
result.closePath();
} else {
// special case, vertical line
result.moveTo(x1 - width / 2.0f, y1);
result.lineTo(x1 + width / 2.0f, y1);
result.lineTo(x2 + width / 2.0f, y2);
result.lineTo(x2 - width / 2.0f, y2);
result.closePath();
}
return result;
}
public Shape getShape() {
Line2D line = getConnectionPoints();
Point2D control = getControlPoint();
GeneralPath p = new GeneralPath();
p.moveTo((float) line.getX1(), (float) line.getY1());
p.quadTo(
(float) control.getX(), (float) control.getY(), (float) line.getX2(), (float) line.getY2());
return p;
}
private static CubicCurve2D _toCubicCurve(Shape seg, CubicCurve2D cub) {
if (cub == null) {
cub = new CubicCurve2D.Double();
}
if (seg instanceof Line2D) {
Line2D src = (Line2D) seg;
cub.setCurve(
src.getX1(),
src.getY1(),
src.getX1(),
src.getY1(),
src.getX2(),
src.getY2(),
src.getX2(),
src.getY2());
} else if (seg instanceof Ellipse2D) {
throw new InternalError("Can't convert Ellipse2D to CubicCurve2D");
} else if (seg instanceof Arc2D) {
throw new InternalError("Can't convert Arc2D to CubicCurve2D");
} else if (seg instanceof QuadCurve2D) {
QuadCurve2D src = (QuadCurve2D) seg;
cub.setCurve(
src.getX1(),
src.getY1(),
src.getCtrlX(),
src.getCtrlY(),
src.getCtrlX(),
src.getCtrlY(),
src.getX2(),
src.getY2());
} else {
CubicCurve2D src = (CubicCurve2D) seg;
cub.setCurve(
src.getX1(),
src.getY1(),
src.getCtrlX1(),
src.getCtrlY1(),
src.getCtrlX2(),
src.getCtrlY2(),
src.getX2(),
src.getY2());
}
return cub;
}
/**
* Translate the terminal. This is implemented since it is the most efficient way for figures that
* contain terminals to translate themselves. However, this method does not call repaint(), on the
* assumption that the parent figure will do so anyway.
*/
@Override
public void translate(double x, double y) {
//// repaint();
_line.setLine(_line.getX1() + x, _line.getY1() + y, _line.getX2() + x, _line.getY2() + y);
if (_end != null) {
_end.translate(x, y);
}
//// repaint();
}
public Polyline2D(Line2D line) {
super();
npoints = 2;
xpoints = new double[2];
ypoints = new double[2];
xpoints[0] = line.getX1();
xpoints[1] = line.getX2();
ypoints[0] = line.getY1();
ypoints[1] = line.getY2();
calculatePath();
}
/**
* Creates a new line by extending an existing line.
*
* @param line the line (<code>null</code> not permitted).
* @param startPercent the amount to extend the line at the start point end.
* @param endPercent the amount to extend the line at the end point end.
* @return A new line.
*/
private Line2D extendLine(Line2D line, double startPercent, double endPercent) {
ParamChecks.nullNotPermitted(line, "line");
double x1 = line.getX1();
double x2 = line.getX2();
double deltaX = x2 - x1;
double y1 = line.getY1();
double y2 = line.getY2();
double deltaY = y2 - y1;
x1 = x1 - (startPercent * deltaX);
y1 = y1 - (startPercent * deltaY);
x2 = x2 + (endPercent * deltaX);
y2 = y2 + (endPercent * deltaY);
return new Line2D.Double(x1, y1, x2, y2);
}
/**
* Sets the parameters of this description object to match the supplied object.
*
* @param o the object (should be an instance of <code>Line2D</code>).
* @throws ObjectFactoryException if the object is not an instance of <code>Line2D</code>.
*/
public void setParameterFromObject(final Object o) throws ObjectFactoryException {
if (!(o instanceof Line2D)) {
throw new ObjectFactoryException("The given object is no java.awt.geom.Line2D.");
}
final Line2D line = (Line2D) o;
final float x1 = (float) line.getX1();
final float x2 = (float) line.getX2();
final float y1 = (float) line.getY1();
final float y2 = (float) line.getY2();
setParameter("x1", new Float(x1));
setParameter("x2", new Float(x2));
setParameter("y1", new Float(y1));
setParameter("y2", new Float(y2));
}
/**
* Creates a new line by extending an existing line.
*
* @param line the line (<code>null</code> not permitted).
* @param startPercent the amount to extend the line at the start point end.
* @param endPercent the amount to extend the line at the end point end.
* @return A new line.
*/
private Line2D extendLine(Line2D line, double startPercent, double endPercent) {
if (line == null) {
throw new IllegalArgumentException("Null 'line' argument.");
}
double x1 = line.getX1();
double x2 = line.getX2();
double deltaX = x2 - x1;
double y1 = line.getY1();
double y2 = line.getY2();
double deltaY = y2 - y1;
x1 = x1 - (startPercent * deltaX);
y1 = y1 - (startPercent * deltaY);
x2 = x2 + (endPercent * deltaX);
y2 = y2 + (endPercent * deltaY);
return new Line2D.Double(x1, y1, x2, y2);
}
/** @see prefuse.render.Renderer#setBounds(prefuse.visual.VisualItem) */
@Override
public void setBounds(VisualItem item) {
if (!m_manageBounds) {
return;
}
Shape shape = getShape(item);
if (shape == null) {
item.setBounds(item.getX(), item.getY(), 0, 0);
} else if (shape == m_line) {
GraphicsLib.setBounds(item, shape, getStroke(item));
} else {
m_box.add(m_line.getX1(), m_line.getY1());
m_box.add(m_line.getX2(), m_line.getY2());
item.setBounds(m_box.getMinX(), m_box.getMinY(), m_box.getWidth(), m_box.getHeight());
}
}
/**
* Calculates the relative position between a line and a cubic curve. If the line is degenerated
* (coincident start and end point) then -1 is returned if the line is outside the bounding box of
* the cubic curve.
*
* @param lin the line
* @param cub the cubic curve
* @return the position of the curve relative to the line -1: curve is left of line +1: curve is
* right of line 0: curve (eventually) intersects the line
*/
private static int _relativePosition(Line2D lin, CubicCurve2D cub) {
// Is the line degenerated?
if (isNull(lin)) {
Rectangle2D rct = cub.getBounds2D();
double x = lin.getX1() - 0.5 * mEps;
double y = lin.getY1() - 0.5 * mEps;
return rct.intersects(x, y, mEps, mEps) ? 0 : -1;
}
// Create a normalized vector perpendicular to the line
final Vector2D vec1Left = new Vector2D(lin.getP1(), lin.getP2());
vec1Left.left();
vec1Left.normalize();
// All four points/ control points must be left or right the line
final Vector2D vec = new Vector2D();
// P1
vec.setLocation(lin.getP1(), cub.getP1());
int ii = _relativePosition(vec1Left, vec);
if (ii == 0) {
return 0;
}
// P2
vec.setLocation(lin.getP1(), cub.getP2());
int i = _relativePosition(vec1Left, vec);
if (i == 0 || i + ii == 0) {
return 0;
}
// CtrlP1
vec.setLocation(lin.getP1(), cub.getCtrlP1());
i = _relativePosition(vec1Left, vec);
if (i == 0 || i + ii == 0) {
return 0;
}
// CtrlP2
vec.setLocation(lin.getP1(), cub.getCtrlP2());
i = _relativePosition(vec1Left, vec);
if (i == 0 || i + ii == 0) {
return 0;
}
return ii;
}
/**
* Returns the length of the line.
*
* @param line the line ({@code null} not permitted).
* @return The length of the line.
*/
public static double length(Line2D line) {
double dx = line.getX2() - line.getX1();
double dy = line.getY2() - line.getY1();
return Math.sqrt(dx * dx + dy * dy);
}
/**
* Returns the angle of rotation (in radians) for the specified line.
*
* @param line the line ({@code null} not permitted).
* @return The angle of rotation (in radians).
*/
public static double calculateTheta(Line2D line) {
double dx = line.getX2() - line.getX1();
double dy = line.getY2() - line.getY1();
return Math.atan2(dy, dx);
}
/**
* Calculates the intersection point between two line(segment)s.
*
* @param any the 1st line(segment)
* @param unbounded <code>true</code> if <code>any</code> is a line, <code>false</code> if <code>
* any</code> is a segment
* @param any2 the 2nd line(segment)
* @param unbounded2 <code>true</code> if <code>any2</code> is a line, <code>false</code> if
* <code>any2</code> is a segment
* @param pntDst the intersection point
* @return the intersection point
* @exception NoIntersectionException if the geometries do not intersect
*/
public static Point2D intersection(
Line2D any, boolean unbounded, Line2D any2, boolean unbounded2, Point2D pntDst)
throws NoIntersectionException {
// Create point object if necessary
if (pntDst == null) {
pntDst = new Point2D.Double();
}
// Bounds check
if (!unbounded && !unbounded2) {
_boundsCheck(any, any2);
}
// Segments with coincident endpoints?
if (!unbounded && !unbounded2) {
Point2D[] pa = new Point2D[2];
pa[0] = any.getP1();
pa[1] = any.getP2();
Point2D[] pb = new Point2D[2];
pb[0] = any2.getP1();
pb[1] = any2.getP2();
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 2; j++) {
double dx = pb[j].getX() - pa[i].getX();
double dy = pb[j].getY() - pa[i].getY();
if ((dx * dx + dy * dy) < getEpsSqr()) {
Vector2D va = new Vector2D(pa[i], pa[(i + 1) % 2]);
Vector2D vb = new Vector2D(pb[j], pb[(j + 1) % 2]);
try {
double ang = va.getAngleSmallest(vb);
if (ang > getEps()) {
pntDst.setLocation(pa[i]);
return pntDst;
}
} catch (NullVectorException e) {
pntDst.setLocation(pa[i]);
return pntDst;
}
}
}
}
}
// Linear equation
double vx1 = any.getX2() - any.getX1();
double vy1 = any.getY2() - any.getY1();
double b1 = -vx1;
double c1 = vx1 * any.getY1() - vy1 * any.getX1();
double vx2 = any2.getX2() - any2.getX1();
double vy2 = any2.getY2() - any2.getY1();
double b2 = -vx2;
double c2 = vx2 * any2.getY1() - vy2 * any2.getX1();
// Solve equation system
double d = vy1 * b2 - vy2 * b1;
if (Math.abs(d) <= mEps) {
throw new NoIntersectionException("Lines are parallel");
}
double dx = b1 * c2 - b2 * c1;
double dy = c1 * vy2 - c2 * vy1;
pntDst.setLocation(dx / d, dy / d);
// Do the line segments contain the intersection point?
if (!unbounded && !containment(any, pntDst)) {
throw new NoIntersectionException("1st line segment doesn't contain intersection point");
}
if (!unbounded2 && !containment(any2, pntDst)) {
throw new NoIntersectionException("2nd line segment doesn't contain intersection point");
}
// Return the intersection point
return pntDst;
}
/** Tell the terminal to reposition itself over the attachment site. */
@Override
public void relocate() {
translate(_attachSite.getX() - _line.getX1(), _attachSite.getY() - _line.getY1());
}
/**
* Determines whether a line segment is null. A line segment with length 0 is null,
*
* @param seg the line segment
* @return <code>true</code> if the line segment is null, <code>false</code> if not
*/
public static boolean isNull(Line2D seg) {
double dx = seg.getX2() - seg.getX1();
double dy = seg.getY2() - seg.getY1();
return mEpsSqr > dx * dx + dy * dy;
}
void drawHisto(ROI2D roi, Graphics2D g, Sequence sequence, final IcyCanvas canvas) {
if (!roiPairDict.containsKey(roi)) return;
IntensityPaint ip = roiPairDict.get(roi);
String currentValueX = "";
String currentValueV = "";
String maxValue = "";
String minValue = "";
for (int component = 0; component < sequence.getSizeC(); component++) {
AffineTransform originalTransform = g.getTransform();
g.setColor(new Color(236, 10, 170));
if (sequence.getSizeC() != 1) {
if (component == 0) g.setColor(Color.red);
if (component == 1) g.setColor(Color.green);
if (component == 2) g.setColor(Color.blue);
}
Rectangle2D rectBox = ((ROI2DRectangle) ip.displayRectangle).getRectangle();
Rectangle2D polyBox = ip.drawPolygon[component].getBounds2D();
try {
if (ip.paintMode == PaintMode.line) {
Line2D line = ((ROI2DLine) roi).getLine();
Point2D Lp;
Point2D Rp;
if (line.getX2() > line.getX1()) {
Lp = line.getP1();
Rp = line.getP2();
} else {
Lp = line.getP2();
Rp = line.getP1();
}
int pos;
if (Math.min(line.getX1(), line.getX2()) >= cursorPos.x) pos = 0;
else if (Math.max(line.getX1(), line.getX2()) <= cursorPos.x) pos = ip.dataCount;
else {
pos = (int) ((cursorPos.x - Lp.getX()) / (Rp.getX() - Lp.getX()) * ip.dataCount);
try {
currentValueX = String.format("X:%.1f", cursorPos.x);
currentValueV += String.format("%.1f ", ip.dataArr.get(component)[pos]);
} catch (Exception e2) {
}
}
ip.cursor1.setLine(pos, 0, pos, polyBox.getHeight());
} else {
int pos = (int) cursorPos.z;
ip.cursor1.setLine(pos, 0, pos, polyBox.getHeight());
try {
currentValueX = String.format("Z:%.1f", cursorPos.z);
currentValueV += String.format("%.1f ", ip.dataArr.get(component)[pos]);
} catch (Exception e2) {
}
}
double sx = rectBox.getWidth() / polyBox.getWidth();
double sy = rectBox.getHeight() / polyBox.getHeight();
if (sx < 100 && sy < 100) {
g.translate(rectBox.getMinX(), rectBox.getMaxY());
g.scale(sx, -sy);
g.draw(ip.drawPolygon[component]);
g.setColor(new Color(100, 100, 170));
g.draw(ip.cursor1);
g.setColor(new Color(236, 10, 170));
} else {
char[] c = "Exceeding display limit!".toCharArray();
g.drawChars(c, 0, c.length, (int) rectBox.getCenterX() - 10, (int) rectBox.getCenterY());
}
} finally {
g.setTransform(originalTransform);
// min,max
double xStart, xEnd;
if (ip.paintMode == PaintMode.line) {
Line2D line = ((ROI2DLine) roi).getLine();
Point2D Lp;
Point2D Rp;
if (line.getX2() > line.getX1()) {
Lp = line.getP1();
Rp = line.getP2();
} else {
Lp = line.getP2();
Rp = line.getP1();
}
xStart = Lp.getX();
xEnd = Rp.getX();
int pos;
double yp;
if (Math.min(line.getX1(), line.getX2()) >= cursorPos.x) {
pos = (int) Lp.getX();
yp = Lp.getY();
} else if (Math.max(line.getX1(), line.getX2()) <= cursorPos.x) {
pos = (int) Rp.getX();
yp = Rp.getY();
} else {
pos = (int) cursorPos.x;
yp =
(cursorPos.x - Lp.getX())
/ (line.getX2() - line.getX1())
* (line.getY2() - line.getY1())
+ Lp.getY();
}
ip.cursor2.setLine(pos, yp + 10, pos, yp - 10);
g.draw(ip.cursor2);
} else {
xStart = 0;
xEnd = ip.dataCount;
}
maxValue += String.format("%.1f ", ip.maxData[component]);
minValue += String.format("%.1f ", ip.minData[component]);
if (component == sequence.getSizeC() - 1) {
char[] c = String.format("%.1f", xStart).toCharArray();
// x1
g.drawChars(c, 0, c.length, (int) rectBox.getMinX(), (int) rectBox.getMaxY() + 30);
c = String.format("%.1f", xEnd).toCharArray();
// x2
g.drawChars(c, 0, c.length, (int) rectBox.getMaxX(), (int) rectBox.getMaxY() + 30);
c = maxValue.toCharArray();
g.drawChars(c, 0, c.length, (int) rectBox.getMaxX() + 10, (int) rectBox.getMinY() + 10);
c = minValue.toCharArray();
g.drawChars(c, 0, c.length, (int) rectBox.getMaxX() + 10, (int) rectBox.getMaxY() - 5);
c = currentValueX.toCharArray();
g.drawChars(
c,
0,
c.length,
(int) (rectBox.getMinX() + (ip.cursor1.x1 / ip.dataCount) * rectBox.getWidth()) - 20,
(int) rectBox.getMaxY() + 15);
c = currentValueV.toCharArray();
g.drawChars(
c,
0,
c.length,
(int) (rectBox.getMinX() + (ip.cursor1.x1 / ip.dataCount) * rectBox.getWidth()) - 20,
(int) rectBox.getMinY() - 5);
}
}
}
}
public void updateArray() {
for (Shape shape : toDraw) {
Line2D line = (Line2D) shape;
line.setLine(line.getX1(), line.getY1() - 10, line.getX2(), line.getY2() - 10);
}
}
public double getStartAngle() {
final Line2D tan = getStartTangeante();
final double theta1 = Math.atan2(tan.getY2() - tan.getY1(), tan.getX2() - tan.getX1());
return theta1;
}
double length(Line2D l1) {
return sqrt(pow(l1.getX1() - l1.getX2(), 2) + pow(l1.getY1() - l1.getY2(), 2));
}