AwtCanvasPainter.java 文件源码

@Override
public void drawScene(Snowflake[] scene, ScreenParameters screenParameters) {
    if (DEBUG_SHOW_FPS) fpsCounter.recordFrame();

    BufferStrategy strategy = getBufferStrategy();
    do {
        do {
            Graphics2D g2d = (Graphics2D) strategy.getDrawGraphics();
            SnowFlake3DRenderer snowFlake3DRenderer = new AwtSnowflakeRenderer(g2d, screenParameters);

            drawBackground(g2d, screenParameters);
            for (Snowflake snowflake : scene) {
                snowFlake3DRenderer.renderSnowflake(snowflake.x + xoffset, snowflake.y, snowflake.size, snowflake.z, screenParameters);
            }

            if (DEBUG_SHOW_FPS) {
                g2d.setColor(Color.white);
                g2d.drawString(String.format("%.2f min FPS", fpsCounter.getMinFps()), 20, 20);
                g2d.drawString(String.format("%.2f max FPS", fpsCounter.getMaxFps()), 20, 35);
            }

            g2d.dispose();

        } while (strategy.contentsRestored());

        strategy.show();
        DEFAULT_TOOLKIT.sync(); // Seems like this is necessary on Ubuntu for smooth animation
    } while (strategy.contentsLost());
}