public Polygon scalePolygon(Polygon polygon) {
int xs[] = new int[polygon.npoints];
int ys[] = new int[polygon.npoints];
math.geom2d.Point2D p;
math.geom2d.Point2D p1;
int sumX = 0;
int sumY = 0;
for (int i = 0; i < polygon.npoints; i++) {
p = new math.geom2d.Point2D(polygon.xpoints[i], polygon.ypoints[i]);
p1 = p.scale(0.5);
sumX += p1.getX();
sumY += p1.getY();
xs[i] = (int) p1.getX();
ys[i] = (int) p1.getY();
p.clone();
}
Polygon poly = new Polygon(xs, ys, polygon.npoints);
poly.translate(sumX / polygon.npoints, sumY / polygon.npoints);
Polygon scalePolygon = new Polygon();
for (int i = 0; i < poly.npoints; i++) {
p = new math.geom2d.Point2D(poly.xpoints[i], poly.ypoints[i]);
if (i + 1 < poly.npoints) {
if (p.distance(poly.xpoints[i + 1], poly.ypoints[i + 1]) > (0.1 * world.getMapWidth())) {
scalePolygon.addPoint(poly.xpoints[i], poly.ypoints[i]);
} else {
continue;
}
} else if (i + 1 == poly.npoints) {
if (p.distance(poly.xpoints[0], poly.ypoints[0]) > (0.1 * world.getMapWidth())) {
scalePolygon.addPoint(poly.xpoints[i], poly.ypoints[i]);
} else {
continue;
}
}
}
return scalePolygon;
}
/**
* This function scales a polygon by the scale coefficient
*
* @param sourcePolygon : Is the Polygon that we want to scale
* @param scale : Is the scale coefficient, It actually multiplies to the points and makes the new
* shape
* @return : returns the scaled polygon which, its center is on the center of the last polygon
*/
protected Polygon scalePolygon(Polygon sourcePolygon, double scale) {
Polygon scaledPolygon;
int xs[] = new int[sourcePolygon.npoints];
int ys[] = new int[sourcePolygon.npoints];
Point2D p, p1;
int sumX = 0;
int sumY = 0;
for (int i = 0; i < sourcePolygon.npoints; i++) {
p = new Point2D(sourcePolygon.xpoints[i], sourcePolygon.ypoints[i]);
p1 = p.scale(scale);
sumX += p1.getX();
sumY += p1.getY();
xs[i] = (int) p1.getX();
ys[i] = (int) p1.getY();
p.clone();
}
Polygon preScaledPolygon = new Polygon(xs, ys, sourcePolygon.npoints);
scaledPolygon = reAllocatePolygon(preScaledPolygon, sourcePolygon);
if (scaledPolygon == null) scaledPolygon = preScaledPolygon;
return scaledPolygon;
}