The attached program correctly fills the intended area of the shape
under 1.5 but not 1.6

import java.awt.Graphics2D;
import java.awt.Font;
import java.awt.Shape;
import java.awt.Rectangle;
import java.awt.Color;
import java.awt.BasicStroke;
import java.awt.GradientPaint;
import java.awt.TexturePaint;
import java.awt.image.BufferedImage;
import java.awt.geom.AffineTransform;
import java.awt.geom.GeneralPath;
import java.awt.font.FontRenderContext;
import java.awt.font.TextLayout;
import java.io.OutputStream;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.imageio.ImageIO;


public class AffineGPTest

public static void main(String[] args) {
final int width = 200;
final int height = 200;


BufferedImage image;
BufferedImage outimage = new BufferedImage(width*5, height*1, BufferedImage.TYPE_INT_RGB);

/* the general path is a sine wave */
GeneralPath oddShape = new GeneralPath();
oddShape.moveTo(10,50);
oddShape.curveTo(10,50,20,10,30,50);
oddShape.moveTo(30,50);
oddShape.curveTo(30,50,40,90,50,50);
oddShape.moveTo(50,50);
oddShape.curveTo(50,50,60,10,70,50);
oddShape.moveTo(70,50);
oddShape.curveTo(70,50,80,90,90,50);
oddShape.closePath();

Graphics2D g2;
AffineTransform af;
final Graphics2D outg2 = (Graphics2D)outimage.getGraphics();

image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
g2 = (Graphics2D)image.getGraphics();
g2.setColor(Color.GRAY);
g2.fillRect(0,0,width,height);
g2.setColor(Color.WHITE);
af = new AffineTransform();
af.translate(30,15);
g2.setTransform(af);
g2.fill(oddShape);

outg2.drawImage(image,0,0,null);

image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
g2 = (Graphics2D)image.getGraphics();
g2.setColor(Color.BLACK);
g2.fillRect(0,0,width,height);
g2.setColor(Color.WHITE);
af = new AffineTransform();
af.rotate(Math.PI/2.0,85,100);
g2.setTransform(af);
g2.fill(oddShape);

outg2.drawImage(image,width,0,null);

image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
g2 = (Graphics2D)image.getGraphics();
g2.setColor(Color.GRAY);
g2.fillRect(0,0,width,height);
g2.setColor(Color.WHITE);
af = new AffineTransform();
af.rotate(Math.PI,85,100);
g2.setTransform(af);
g2.fill(oddShape);

outg2.drawImage(image,width*2,0,null);

image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
g2 = (Graphics2D)image.getGraphics();
g2.setColor(Color.BLACK);
g2.fillRect(0,0,width,height);
g2.setColor(Color.WHITE);
af = new AffineTransform();
af.rotate(-Math.PI/2.0,85,100);
g2.setTransform(af);
g2.fill(oddShape);

outg2.drawImage(image,width*3,0,null);

image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
g2 = (Graphics2D)image.getGraphics();
g2.setColor(Color.GRAY);
g2.fillRect(0,0,width,height);
g2.setColor(Color.WHITE);
af = new AffineTransform();
af.rotate(10.0,85,100);
af.scale(1.5,0.5);
g2.setTransform(af);
g2.fill(oddShape);

outg2.drawImage(image,width*4,0,null);

try {
final String outname = "generalpath.png";
System.out.println("Writing "+outname);
final OutputStream os = new BufferedOutputStream(new FileOutputStream(outname));
ImageIO.write(outimage,"png",os);
os.flush();
os.close();
} catch (IOException e) {
System.out.println("ouch io exception "+e);
}
}
}