我做了一个java绘画应用程序,并且我制作了一个彩虹画笔功能;然而,我想让随机化的颜色变成平滑的渐变。它目前只是印刷不同颜色的椭圆形,您可以注意到每个不同的椭圆形。有没有办法让它渐变?Java - 制作渐变画笔
Paint Project - CLICK HERE TO SEE PROGRAM
我的彩虹功用:
public void rainbow() {
Random generator = new Random();
int r = generator.nextInt(256);
int g = generator.nextInt(256);
int b = generator.nextInt(256);
Color color = new Color(r, g, b);
g2.setPaint(color);
}
我的鼠标监听器:
public DrawArea() {
addMouseListener(new MouseAdapter() {
public void mousePressed(MouseEvent e) {
// save coord x,y when mouse is pressed
oldX = e.getX();
oldY = e.getY();
}
});
addMouseMotionListener(new MouseMotionAdapter() {
public void mouseDragged(MouseEvent e) {
// coord x,y when drag mouse
currentX = e.getX();
currentY = e.getY();
if (g2 != null) {
// draw oval if g2 context not null
g2.drawOval(oldX, oldY, 40, 40);
g2.fillOval(oldX, oldY, 40, 40);
// refresh draw area to repaint
repaint();
// store current coords x,y as olds x,y
oldX = currentX;
oldY = currentY;
}
}
});
}
涂料成份:
public void paintComponent(Graphics g) {
if (image == null) {
image = createImage(getSize().width, getSize().height);
g2 = (Graphics2D) image.getGraphics();
clear();
}
// enable antialiasing
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g.drawImage(image, 0, 0, null);
}
去这里:http://stackoverflow.com/questions/363681/generating-random-integers-in-a-range-with-java –
你想每个椭圆形是渐变还是你想绘制的线看起来像一个渐变? –
我希望绘制的线看起来像一个渐变的颜色 – flowinwind