public static Point2D.Double pointBetween(Point2D.Double p, Point2D.Double p2, double pos) {
Point2D.Double n =
new Point2D.Double(
p.getX() * (1 - pos) + p2.getX() * (pos), p.getY() * (1 - pos) + p2.getY() * (pos));
return n;
}
public static int closest(Point2D.Double[] BTS, Point2D.Double p) {
double[] dist = new double[BTS.length];
int min = 0;
for (int i = 0; i < BTS.length; i++) {
dist[i] = distanceSq(BTS[i].getX(), BTS[i].getY(), p.getX(), p.getY());
if (dist[i] < dist[min]) min = i;
}
// System.out.println(dist[min] + " " + min);
return min;
}
/**
* Method to get the coordinates of the enclosing rectangle after this transformation is applied
* to the current picture
*
* @return the enclosing rectangle
*/
public Rectangle2D getTransformEnclosingRect(AffineTransform trans) {
int width = getWidth();
int height = getHeight();
double maxX = width - 1;
double maxY = height - 1;
double minX, minY;
Point2D.Double p1 = new Point2D.Double(0, 0);
Point2D.Double p2 = new Point2D.Double(maxX, 0);
Point2D.Double p3 = new Point2D.Double(maxX, maxY);
Point2D.Double p4 = new Point2D.Double(0, maxY);
Point2D.Double result = new Point2D.Double(0, 0);
Rectangle2D.Double rect = null;
// get the new points and min x and y and max x and y
trans.deltaTransform(p1, result);
minX = result.getX();
maxX = result.getX();
minY = result.getY();
maxY = result.getY();
trans.deltaTransform(p2, result);
minX = Math.min(minX, result.getX());
maxX = Math.max(maxX, result.getX());
minY = Math.min(minY, result.getY());
maxY = Math.max(maxY, result.getY());
trans.deltaTransform(p3, result);
minX = Math.min(minX, result.getX());
maxX = Math.max(maxX, result.getX());
minY = Math.min(minY, result.getY());
maxY = Math.max(maxY, result.getY());
trans.deltaTransform(p4, result);
minX = Math.min(minX, result.getX());
maxX = Math.max(maxX, result.getX());
minY = Math.min(minY, result.getY());
maxY = Math.max(maxY, result.getY());
// create the bounding rectangle to return
rect = new Rectangle2D.Double(minX, minY, maxX - minX + 1, maxY - minY + 1);
return rect;
}
/**
* Write the given text string in the current font, centered at <location>.
*
* @param location the Point at the center of the text
* @param s the text
*/
public static void text(Point2D.Double location, String s) {
text(location.getX(), location.getY(), s);
}
/**
* Draw a filled rectangle of given half width and half height, centred at <location> and rotated
* by d degrees.
*
* @param location the Point at the centre of the rectangle
* @param halfWidth is half the width of the rectangle
* @param halfHeight is half the height of the rectangle
* @param degrees is the rotation of the rectangle with 3 o'clock being 0 degrees and 12 o'clock
* being 270 degrees
* @throws RuntimeException if halfWidth or halfHeight is negative
*/
public static void filledAngledRectangle(
Point2D.Double location, double halfWidth, double halfHeight, double degrees) {
filledAngledRectangle(location.getX(), location.getY(), halfWidth, halfHeight, degrees);
}
/**
* Draw a filled diamond of side length 2r, centred at <location>.
*
* @param location the Point at the centre of the square
* @param r radius is half the length of any side of the diamond
* @throws RuntimeException if r is negative
*/
public static void filledDiamond(Point2D.Double location, double r) {
filledDiamond(location.getX(), location.getY(), r);
}
/**
* Draw a filled square of side length 2r, centred at <location>.
*
* @param location the Point at the centre of the square
* @param r radius is half the length of any side of the square
* @throws RuntimeException if r is negative
*/
public static void filledSquare(Point2D.Double location, double r) {
filledSquare(location.getX(), location.getY(), r);
}
/**
* Draw a circle of radius r, centred at <location>.
*
* @param location the Point at the centre of the circle
* @param r the radius of the circle
* @throws RuntimeException if the radius of the circle is negative
*/
public static void circle(Point2D.Double location, double r) {
circle(location.getX(), location.getY(), r);
}