我用g2d创建这个图像:
代码如下:
BufferedImage bufferedImage = new BufferedImage(408, 408, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = bufferedImage.createGraphics();
List<Pixel> pixels = cacheRepo.findAll();
pixels.stream().forEach(pixel -> {
g2d.setColor(getColorFromPixel(pixel));
g2d.fillRect(getPos(pixel.getPosition().x), getPos(pixel.getPosition().y), 20, 20);
});
现在我试着把它旋转90度,使布鲁广场出现在左下角:
所以我补充说:
g2d.rotate(Math.toRadians(90));
g2d.drawRenderedImage(bufferedImage, null);
但是旋转没有发生(我仍然有相同的图像)。
以下是完整的代码,其中包含保存图像的部分:
BufferedImage bufferedImage = new BufferedImage(408, 408, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = bufferedImage.createGraphics();
List<Pixel> pixels = cacheRepo.findAll();
pixels.stream().forEach(pixel -> {
g2d.setColor(getColorFromPixel(pixel));
g2d.fillRect(getPos(pixel.getPosition().x), getPos(pixel.getPosition().y), 20, 20);
});
g2d.rotate(Math.toRadians(90));
g2d.drawRenderedImage(bufferedImage, null);
g2d.dispose();
File file = new File("myimage.png");
try {
ImageIO.write(bufferedImage, "png", file);
} catch (IOException e) {
e.printStackTrace();
}