public BufferedImage generateImageFromDna(
List<Gene> dna, GAParameters parameters, double multiplier) {
// long timestamp = System.currentTimeMillis();
BufferedImage image =
new BufferedImage(
(int) (parameters.getTargetImage().getWidth() * multiplier),
(int) (parameters.getTargetImage().getHeight() * multiplier),
BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics = image.createGraphics();
graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
graphics.setRenderingHint(
RenderingHints.KEY_COLOR_RENDERING, RenderingHints.VALUE_COLOR_RENDER_SPEED);
drawBlackBackground(graphics, parameters, multiplier);
for (Gene gene : dna) {
int[] x = new int[gene.getPoints().size()];
int[] y = new int[gene.getPoints().size()];
for (int i = 0; i < gene.getPoints().size(); i++) {
x[i] = (int) (gene.getPoints().get(i).getX() * multiplier);
y[i] = (int) (gene.getPoints().get(i).getY() * multiplier);
}
Polygon p = new Polygon(x, y, gene.getPoints().size());
graphics.setColor(gene.getColor());
graphics.fillPolygon(p);
}
// System.out.println("rendering took : " + (System.currentTimeMillis() - timestamp));
return image;
}
private void drawBlackBackground(
Graphics2D graphics, GAParameters parameters, double multiplier) {
graphics.setColor(Color.BLACK);
graphics.fillRect(
0,
0,
(int) (parameters.getTargetImage().getWidth() * multiplier),
(int) (parameters.getTargetImage().getHeight() * multiplier));
}
