paint

I'm looking for an algorithm that places tick marks on an axis, given a range to display, a width to display it in, and a function to measure a string width for a tick mark. For example, given that I need to display between 1e-6 and 5e-6 and a width to display in pixels, the algorithm would determine that I should put tickmarks (for example) at 1e-6, 2e-6, 3e-6, 4e-6, and 5e-6. Given a smaller width, it might decide that the optimal placement is only at the even positions, i.e. 2e-6 and 4e-6 (since putting more tickmarks would cause them to overlap). A smart algorithm would give preference to

I decided to re-write my game using Swing's painting technique paintComponent() method(someone on SO actually told me to use this method). I decided to use JPanel as the game's base instead of Canvas. My previous written game uses a Canvas but the game could not show up on my 64 bit desktop but could show up on my 32 bit labtop which is why this game had to be re-written. Problem now is, while the ship's movement works, the drawing seems awfully slow(unless it is my laptop problem?) compare to what I did before which was using AWT's double buffering drawing technique. I spend a whole day but

I'm trying to draw lines over my JTable using a Painter object that I've made, but for some reason table.getGraphics() returns null. Painter class: import java.awt.BasicStroke; import java.awt.Graphics; import java.awt.Graphics2D; import javax.swing.JTable; public class Painter extends JTable { public Painter(){ } public void paintSudokuLines(Graphics g){ paintComponent(g); } public void paintComponent(Graphics g){ super.paintComponent(g); Graphics2D g2 = (Graphics2D) g; g2.setStroke(new BasicStroke(3)); g2.drawLine(0, 300, 400, 250); } } I'm calling the method with: private Painter paint =

I have a Java paint program, and I've got two problems to do with it. Both problems are relatively simple, and just regard how the mouse input is handled and how the image uses colors. Here's a photo of the app: So here's my first problem: As you can see, by the look of the app, there's a spray of dots on the paint area. Each of those dots is a mouseclick. The program does not recognize when a user is holding down the mouse button, so you have to click individually. This is obviously counterproductive, user-unfriendly and unacceptable. Now, how I fix this, I'm not sure. I've tried using a

I like to make a histogram. With drawLine() , it's not really a problem for me, but when I try to do it with fillRect() the rectangles are going from top to bottom. I would like to paint the histogram looking similar to my histogram with drawLine() . Here is my code: public void paint(Graphics g) { super.paint(g); int height = getHeight(); int width = getWidth(); int x =10; haufigkeit=model.getMap(); for(int i = 1; i <= 45; i++) { int y; y = haufigkeit.get(i); Color color = new Color(0, 0, (int)(150 + Math.random() * 100)); g.setColor(color); // g.fillRect(x, 50, 10, y); // g.drawLine(x,

Here is the code for a dice game that I am working on that outputs the results to a window. The paint method repeats twice, which is not good for me because I want the dice to roll once and then move on to the next frame. Please someone help me with this problem. Thank you in advance. import java.awt.*; import java.util.Random; import javax.swing.*; public class Dice extends JApplet { public static int pause(int n) { try { Thread.sleep(n); } catch(InterruptedException e) { } return n; } public void Dice() { JApplet app = new Dice(); JFrame frame = new JFrame("Dice Game"); frame.setBounds(30,

I'm trying to draw a very thin line (less than one pixel thick) in android. I'm using Paint blackThin = new Paint(); blackThin.setStrokeWidth(0.1f); blackThin.setColor(Color.BLACK); to initialize the paint object. This works fine in Android 2.2, but when I try it in 4.2 (also 4.1, I think - I tested that one briefly - I haven't tested any other versions other that 2.2, 4.1.2 and 4.2) the lines won't show up when I draw them. To make them show up in 4.2, it seems like I have to set the anti-aliasing flag to be true. (I tried that, and the lines showed up.) But I really don't want that, because