为了以后创建随机粒子（在游戏中），我创建了一些函数，它们获取椭圆的片段，自定义它们，然后绘制它们。这适用于g.draw（... the_line ..）[Ellipse outer_Bounds得到]，但是一旦我使用g.fill（... the_line ...），内部部分就没有被正确填充。
如何修复：错误的移动点...只需移动最初的pi.SEG_Moveto中的moveto语句
The resulting graphic (ignore the number and the little box behind it)
private Ellipse2D.Double oval=new Ellipse2D.Double(100, 100, 100, 100);
private ArrayList<double[]> Ellipse_Generation_Points = new ArrayList<double[]>();
private double [] vals = new double[6];
public void Projectile_Basis(){
for (PathIterator pi = oval.getPathIterator(null); !pi.isDone(); pi.next()){
//currentSegment übergibt Type und Koordinatenpaare
int type = pi.currentSegment(vals);
//System.out.println(type);
//Überprüfung des Übergebenen Types, Unterschiedliche Typen geben eine unterschiedliche Anzahl an Koordinaten-Paaren an
//Type benötigt, um später die Form korrekt nachzuzeichnen
if (type==pi.SEG_MOVETO||type==pi.SEG_LINETO) {
double [] pathIteratorCoords = {type, vals[0], vals[1]};
Ellipse_Generation_Points.add(pathIteratorCoords);
}
else if (type==pi.SEG_QUADTO){
double [] pathIteratorCoords = {type, vals[0], vals[1], vals[2], vals[3]};
Ellipse_Generation_Points.add(pathIteratorCoords);
}
else if (type==pi.SEG_CUBICTO){
//RANDOMIZER
vals[0]+=Math.random()*50;
vals[1]-=Math.random()*50;
double [] pathIteratorCoords = {type, vals[0], vals[1], vals[2], vals[3], vals[4], vals[5]};
Ellipse_Generation_Points.add(pathIteratorCoords);
}
else if (type==pi.SEG_CLOSE){
double [] pathIteratorCoords = {type, vals[0], vals[1]};
Ellipse_Generation_Points.add(pathIteratorCoords);
}
}
}
public GeneralPath Generate_Random_Particle(){
PathIterator pi = oval.getPathIterator(null);
double [] start_element = new double [3]; // Zum Schließen des Objekts
double [] last_element = new double [3];
GeneralPath polyline = new GeneralPath(GeneralPath.WIND_EVEN_ODD, Ellipse_Generation_Points.size());
for(int i=0; i<Ellipse_Generation_Points.size(); i++){
//Übergabe des Double_Arrays aus Projectile_Basis, spätere Aufteilung in die einzelnen Bausteine
double [] current_element=Ellipse_Generation_Points.get(i);
if (current_element[0]==PathIterator.SEG_MOVETO){
start_element=current_element; //MOVETO only am Start des Objekts
last_element=current_element;
}
else if (current_element[0]==PathIterator.SEG_LINETO){
polyline.moveTo(last_element[1], last_element[2]);
polyline.lineTo(current_element[1], current_element[2]);
last_element[1]=current_element[1];
last_element[2]=current_element[2];
}
else if (current_element[0]==PathIterator.SEG_QUADTO){
polyline.moveTo(last_element[1], last_element[2]);
polyline.quadTo(
current_element[1], current_element[2],
current_element[3], current_element[4]
);
last_element[1]=current_element[3];
last_element[2]=current_element[4];
}
else if (current_element[0]==PathIterator.SEG_CUBICTO){
polyline.moveTo(last_element[1], last_element[2]);
polyline.curveTo(
current_element[1], current_element[2],
current_element[3], current_element[4],
current_element[5], current_element[6]
);
last_element[1]=current_element[5];
last_element[2]=current_element[6];
}
else if (current_element[0]==PathIterator.SEG_CLOSE){
polyline.moveTo(start_element[1], start_element[2]);
polyline.closePath();
}
}
return polyline;
}