public void paintComponent(Graphics g) {
Graphics2D g2d = (Graphics2D) g.create();
g2d.setStroke(new BasicStroke(1.0f));
if (isOpaque()) {
g2d.setColor(getBackground());
g2d.fillRect(0, 0, getWidth(), getHeight());
}
g2d.setColor(Color.black);
g2d.drawLine(0, frameHeight / 2, frameWidth, frameHeight / 2);
g2d.drawLine(frameWidth / 2, 0, frameWidth / 2, frameHeight);
for (int i = unityX; i < frameWidth / 2; i += unityX) {
g2d.drawLine(
frameWidth / 2 + i, frameHeight / 2 - 3, frameWidth / 2 + i, frameHeight / 2 + 3);
g2d.drawLine(
frameWidth / 2 - i, frameHeight / 2 - 3, frameWidth / 2 - i, frameHeight / 2 + 3);
}
for (int i = unityY; i < frameHeight / 2; i += unityY) {
g2d.drawLine(
frameWidth / 2 - 3, frameHeight / 2 + i, frameWidth / 2 + 3, frameHeight / 2 + i);
g2d.drawLine(
frameWidth / 2 - 3, frameHeight / 2 - i, frameWidth / 2 + 3, frameHeight / 2 - i);
}
g2d.setColor(Color.blue);
function.drawFunctionToGraphic(g2d, frameWidth, frameHeight, unityX, unityY);
paintCurrentMethodState(g2d);
g2d.dispose();
}
private static int[] makeGradientPallet() {
BufferedImage image = new BufferedImage(100, 1, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = image.createGraphics();
Point2D start = new Point2D.Float(0f, 0f);
Point2D end = new Point2D.Float(99f, 0f);
float[] dist = {0f, .5f, 1f};
Color[] colors = {Color.RED, Color.YELLOW, Color.GREEN};
g2.setPaint(new LinearGradientPaint(start, end, dist, colors));
g2.fillRect(0, 0, 100, 1);
g2.dispose();
int width = image.getWidth(null);
int[] pallet = new int[width];
PixelGrabber pg = new PixelGrabber(image, 0, 0, width, 1, pallet, 0, width);
try {
pg.grabPixels();
} catch (InterruptedException ex) {
ex.printStackTrace();
}
return pallet;
}