/**
* Checks if a point is inside the polygon shape.
*
* @param fShape
* @param fPoint
* @return true if inside, false if on border or outside
*/
public static boolean contains(FreedomShape fShape, FreedomPoint fPoint) {
ArrayList<Float> lx = new ArrayList<Float>();
ArrayList<Float> ly = new ArrayList<Float>();
int verticesNum = 0;
float px = fPoint.getX();
float py = fPoint.getY();
if (fShape instanceof FreedomPolygon) {
FreedomPolygon poly = (FreedomPolygon) fShape;
verticesNum = poly.getPoints().size();
for (int i = 0; i < poly.getPoints().size(); i++) {
lx.add((float) poly.getPoints().get(i).getX());
ly.add((float) poly.getPoints().get(i).getY());
}
}
// TODO: converting: change this code please
float[] x = new float[lx.size()];
for (int i = 0; i < lx.size(); i++) {
Float f = lx.get(i);
x[i] = ((f != null) ? f : Float.NaN); // Or whatever default you want.
}
// TODO: converting: change this code please
float[] y = new float[ly.size()];
for (int i = 0; i < ly.size(); i++) {
Float f = ly.get(i);
y[i] = ((f != null) ? f : Float.NaN); // Or whatever default you want.
}
// algorithm starts
if (verticesNum < 3) {
return false;
}
boolean oddNodes = false;
float x2 = x[verticesNum - 1];
float y2 = y[verticesNum - 1];
float x1;
float y1;
for (int i = 0; i < verticesNum; x2 = x1, y2 = y1, ++i) {
x1 = x[i];
y1 = y[i];
if (((y1 < py) && (y2 >= py)) || ((y1 >= py) && (y2 < py))) {
if (((py - y1) / (y2 - y1) * (x2 - x1)) < (px - x1)) {
oddNodes = !oddNodes;
}
}
}
return oddNodes;
}
private static FreedomPolygon translate(FreedomPolygon input, int xoffset, int yoffset) {
FreedomPolygon output = new FreedomPolygon();
for (FreedomPoint point : input.getPoints()) {
output.append(point.getX() + xoffset, point.getY() + yoffset);
}
return output;
}
private static Polygon convertToAWT(FreedomPolygon input) {
FreedomPolygon polygon = (FreedomPolygon) input;
Polygon output = new Polygon();
for (FreedomPoint point : polygon.getPoints()) {
output.addPoint(point.getX(), point.getY());
}
return output;
}
/**
* @param object
* @return
*/
@Override
public boolean equals(Object object) {
if (object instanceof FreedomPoint) {
FreedomPoint point = (FreedomPoint) object;
if ((point.getX() == this.getX()) && (point.getY() == this.getY())) {
return true;
} else {
return false;
}
}
return false;
}
private static FreedomPoint getRectangleCenter(FreedomPolygon input) {
FreedomPoint min = input.getPoints().get(0);
FreedomPoint max = input.getPoints().get(2);
int x = ((max.getX() - min.getX()) / 2) + min.getX();
int y = ((max.getY() - (min.getY() / 2)) + min.getY());
return new FreedomPoint(x, y);
}
private static FreedomPolygon getBoundingBox(FreedomPolygon input) {
int minx = Integer.MAX_VALUE;
int miny = Integer.MAX_VALUE;
int maxx = Integer.MIN_VALUE;
int maxy = Integer.MIN_VALUE;
for (FreedomPoint p : input.getPoints()) {
minx = Math.min(minx, p.getX());
miny = Math.min(miny, p.getY());
maxx = Math.max(maxx, p.getX());
maxy = Math.max(maxy, p.getY());
}
FreedomPolygon poly = new FreedomPolygon();
poly.append(minx, miny);
poly.append(maxx, miny);
poly.append(maxx, maxy);
poly.append(minx, maxy);
return poly;
}
/**
* taken from
* http://stackoverflow.com/questions/10533403/how-to-rotate-a-polygon-around-a-point-with-java
* all credits to respective authors
*/
private static FreedomPoint rotatePoint(FreedomPoint pt, FreedomPoint pivot, double degrees) {
double radians = Math.toRadians(degrees);
double cosAngle = Math.cos(radians);
double sinAngle = Math.sin(radians);
int x =
(int)
Math.round(
pivot.getX()
+ (double)
(((pt.getX() - pivot.getX()) * cosAngle)
- ((pt.getY() - pivot.getY()) * sinAngle)));
int y =
(int)
Math.round(
pivot.getY()
+ (double)
(((pt.getX() - pivot.getX()) * sinAngle)
+ ((pt.getY() - pivot.getY()) * cosAngle)));
return new FreedomPoint(x, y);
}
private static Point convertToAWT(FreedomPoint fPoint) {
return new Point(fPoint.getX(), fPoint.getY());
}
