JavaCV Drawing Convexhull Doesn't Work
Sep 9, 2014
import com.googlecode.javacpp.Loader;
import com.googlecode.javacv.*;
import com.googlecode.javacv.cpp.*;
import com.googlecode.javacv.cpp.opencv_core.CvMemStorage;
import com.googlecode.javacv.cpp.opencv_core.CvPoint;
import com.googlecode.javacv.cpp.opencv_core.CvScalar;
import com.googlecode.javacv.cpp.opencv_core.CvSeq;
import com.googlecode.javacv.cpp.opencv_core.IplImage;
import com.googlecode.javacv.cpp.opencv_highgui.CvCapture;
import com.googlecode.javacv.cpp.opencv_imgproc.CvMoments;
[code]....
Everything works in this except the part where drawing a convexhull and the convexitydefects around an object. Drawing circle around the COG works OK. I tried to draw them with these lines but no luck.
hullSeq = cvConvexHull2(bigContour, hullStorage, CV_COUNTER_CLOCKWISE, 0);
defects = cvConvexityDefects(bigContour, hullSeq, defectsStorage);
cvDrawContours(img1,defects , CvScalar.BLUE, CvScalar.BLUE, 1,0,0);
cvDrawContours(img1,hullSeq , CvScalar.BLUE, CvScalar.BLUE, 1,0,0);
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Feb 18, 2014
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class frmSearch extends JDialog
{
Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
JPanel jpnlMain = new JPanel();
[Code] ....
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Here is my code:
package main;
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import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
[Code] .....
I have noticed, that if i call setVisible(true) before i add the button, then it works, but the button is not displayed... How can i achieve that the button is displays AND the KeyListener works?
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It worked before.
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[Code] .....
On the server side there is Tomcat 8.0.21 + APR connector. Every time this heartbeat is sent I see in the Wireshark and EtherDetect that new TCP connection is opened (SYN-SYNACK packets) and after getting response from Tomcat connection is closed (FIN – FINACK packets). I was expecting that TCP connections will be reused but not closed.
Capture.png 182.0 K
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Java Code:
import java.io.*;
import java.util.Scanner;
public class asciiFile {
int height;
int width;
Scanner input;
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[code]...
The constructor is supposed to take an ASCII file, take the numbers in the file, and populate a 2D array with the numbers in the file.
For some reason, the for loop I use to populate the array works outside of the constructor. When I put it in one of the methods, it runs normally. However, when I keep it in the constructor, I get the following error:
Exception in thread "main" java.lang.NullPointerException
at asciiFile.<init>(asciiFile.java:16)
at main.main(main.java:6)
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Java Code: public String getWebData(String urlString, String add) throws IOException{
String output = "";
try {
//+s being the token, for example if dictionary.com was being used
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URL url = new URL(urlString);
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[code]....
Anyway, when I run this program within Netbeans, it works perfectly. I have a backup of the project in eclipse as well, and I've copied all of the code over and tried running the same thing in Eclipse - exactly the same, it works perfectly. The problem is whether I compile the the code in Netbeans or Eclipse, the exported runnable jar for some reason has an issue with this one method. It doesn't crash, and it seems to be doing something, but it is by no means giving me the data from the website like it is supposed to.
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I have this code: [URL] .... It works on fiddle but on local it does not work. What should be the problem?
Fiddle:
$('#addnewline').on('click', function (e) {
e.preventDefault();
var $textarea = $('#thetext');
$textarea.val(function () {
return $(this).val().substring(0, this.selectionstart) + "<br>" + $(this).val().substring(this.selectionstart);
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<button id="addnewline">New line</button>
<br />
<textarea rows="4" cols="50" id="thetext">Some text
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Below is my code
<%--
Document : closeAc
--%>
<%@page import="javax.swing.JOptionPane"%>
<%@page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" import="java.sql.*, java.util.Date;"%>
<%
try {
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
[code]....
All I'm trying to do is to search the data from the database and is doesn't show up!
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It does say the value of the local variable is not used however. I've debugged to ensure it hits the code it always prints out the line after too.It just does not overwrite my original xml file with the temp one.
It's had votes on stack so I thought that would of been reputableStack - overwrite but the second one got voted as a good answer. But still I would like to know if my code can work or not.
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@Override
public Component getListCellRendererComponent(JList<?> list,
Object value, int index, boolean isSelected,
boolean cellHasFocus) {
[Code] .....
However, when I click anywhere on the JList, nothing gets printed to the console, which suggests that the mousePressed() method isn't being invoked. I think it's a problem with the CellRenderer, because I have similar code elsewhere that works, the only difference being I don't use a custom CellRenderer.
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Scanner sc = new Scanner(System.in);
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Cookie [] cookies = request.getCookies();
for(int x=0; x<cookies.length; x++){
Cookie cookie = (Cookie) cookies[x];
String cookieValue = cookie.getValue();
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I also tried doing this and it wouldn't work too
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by the way I am using an application server with its JAVA EE version = 1.4 and JAVA SE version = 5
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Java Code:
public void paintComponent(Graphics g) {
super.paintComponent(g);
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Graphics g1 = image.getGraphics();
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package labBuilding;
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.JPanel;
@SuppressWarnings("serial")
public class Building extends JPanel {
[code]....
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May 1, 2014
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g.setFont(new Font("Helvetica", Font.PLAIN, 12));
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[code]....
I'm fairly new to Java and am having a hard time with this particular assignment. The program runs and shows up on the drawing panel fine but I can't get the lines quite right.Capture.jpg
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I won't paste code, it's rather large.
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I have a problem which can't solve it for 2 days search. I need to draw 3d shapes , i downloaded all packages and set an example code and run it ...
Exception in thread "main" java.lang.UnsatisfiedLinkError: no J3D in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java :1886)
at java.lang.Runtime.loadLibrary0(Runtime.java:849)
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[Code] ....
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solve my problems regarding drawings on my JPanel(Transparent panel).My Jframe & other components are created by netbeans GUI builder & the transparent panel is created manually but one problem is that i can't impose this Transparent panel into JFrame like it is attached to the JFrame.Another problem is that,i want that transparent panel size should be counted in inch like my attached picture(TOTAL SIze 36 inch) & also when i clicked on that panel those mouse points highest distance should be measured in Inch.How can i do all of these three task??
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int stn = 0;
while (stn < 10)
{
glb1.xOfText += 20;
glb1.yOfText += 20;
gc1.drawImage(glb1.img1 , glb1.xOfText , glb1.yOfText);
TimeKeeper.pause(500);
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Where glb1 is a final reference to an object that holds common data for the game.while its x and y values say they are for text, they are also used for image placement (at least during this testing phase.)
gc1 is the "graphics context" of the canvas that the images are being drawn on.
The person who wrote this said, "When the attached code is run, the calls to TimeKeeper.pause(500), which in turn call Thread.sleep(500), are all executed in row, and then the results of drawing the image 10 times is displayed. (I know because some of the previous image pastes left some visual data behind.)"
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how to phrase the question. I created a small applet in java.. it allows me to move a toon around a blank applet window. I am using four gif files that have a walking animation in them. The issue i am having is after moving around the gif just flashes in and out really quickly.. when i start the program, moving up and down seems to be working perfectly fine, but the moment i move left or right it starts messing up for all directions. here is my code.
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class CharactorMove extends JApplet implements KeyListener
[code]....
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Java Code:
private ImageIcon i = new ImageIcon("image.png");
private Image image;
...
image = i.getImage();
...
g.drawImage(image, (int)(x - r), (int)(y - r), null); mh_sh_highlight_all('java');
Am I doing it right? The program gives me no error, it's just that when I try to draw it, I see nothing.
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I am having issues with drawing shapes from bottom right to top left.
Issue:
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- other shapes will not even show the shape in that area
Needs:
- g.drawSHAPE needs to show and not be filled unless I have my fill checkbox selected
The Program:
- Create a JFrame with a draw panel and a component panel
- have a combobox with shapes that, when selected, will draw that shape in the draw panel
- have a button that, when clicked, will launch JColorChooser to change the color of the drawn shape (draw panel is set to black)
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Code for my drawRect():
Java Code:
// if statement to check if mouse drag X is less than starting X
if(x2 <= x){
if(emptyORfill.isSelected()) // emptyORfill is my JCheckBox
g.fillRect(x2, y, x-x2, y2-y); // x-x2 is the same as Math.abs(x2-x)
else
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[Code] .....
This is just for my Rectangle. This will show a filled rectangle when both mouse drag X and Y are less then the starting X and Y. If I take this fully functional code and adapt it to drawRoundRect(), the round rectangle wont even show the shape when mouse drag X and Y are less than the starting X and Y but will be fine if one or the other is less than the starting X or Y. NOTE: This same exact code worked on my classmates laptop in her program, but in my program on her laptop it did not. She took out the "else" in the else if's and just made them if statements all the way down and it worked on her laptop in my program, but the same "fix" did not work on my pc.
My mouse listener just sets X and Y values in my Shape class that updates my shape methods. I have an item listener for my comboBox that sets default values when a new selection is made and enables/disables editable on my fill checkbox for certain shapes. My action listener looks for the button click and the checkBox click.
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Java Code:
import javax.swing.JFrame;
import javax.swing.WindowConstants;
import java.awt.*;
import java.lang.Object;
import java.awt.Color;
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[Code] .....
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I am trying to make a GUI that allows the user to input the NumberLink puzzle (through mouse action events), and then, displays the puzzle in a grid with features to draw a path, and undo it. This is almost exactly the same functionality as in Numberlink on Nikoli
1. In my project, I have a Stage in which a setup scene prompts user for rows and columns (to take size of puzzle),
2. Then, it generates an empty grid (I'm thinking of using a GridPane here), and the user clicks the squares to enter the numbers into the square. this phase isnt a problem if I use text fields and mouse listeners and store info in a grid... the next phase is what I'm stuck at... unless I know exactly how to do that, I cant make progress...
3. In the third stage, I have to display the numbers to the user just like on the Nikoli site (the highlighting number pairs on mouse hover is a necessary feature too, which I think I can handle with CSS).. and the user should draw paths between the numbers, just as on that site ( I thought VLineTo and HLineTo classes would be suitable.. but I'm not sure, and cant find any alternatives) .....
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How I can implement a user inputted path drawing ??
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