[HELP] Technical drawing
I am working in a company that fabricates signages. I am new here. We are using AutoCad and Adobe Illustrator for making shop drawings and actual size print for the signages. Please help me or give me some tips for technical drawing. We're just two designers here and I'm not that aware about making plans, mock-up drawings because I am a fresh graduate I.T and the environment of my work is for Industrial, Architect, and Engineering. Thank you.
I was refering to Corel Draw Graphics Suite X6, although Technical Suite is certainly worth considering, too.
Draw is Corel's general-purpose vector drawing program, just as Illustrator is Adobe's general-purpose vector drawing program. Draw is the "central" program in the Graphics Suite bundle, which also includes PhotoPaint, a raster imaging program comparable to Photoshop, and other programs.
As mentioned above, Draw has basic dimension tools, callout tools, provides for drawing to scale, and lets you specify type in terms of cap height, which is how sign shops often prefer to do it. Corel Draw is widely used in the sign trade.
Corel Technical Suite is a similar bundle, but the drawing program is a version of Draw that is modified to includes features and functionality from another more expressly technically-oriented drawing program formerly known as Micrografx Designer, which was acquired by Corel in 2001. Corel originally called that program Corel Designer, but is now called CorelDRAW Technical Suite.
Corel did a very nice job of merging the two programs. The interface of DRAW Technical is almost identical to Draw; a Draw user can jump right into it and feel right at home. Graphically, it's interface is toned down a bit; rather cleaner and more "business like" in its look and feel, which I prefer.
Beyond that, though, there is significant functional addition. It includes a feature set expressly to facilitate axonometric drawing (isometric, dimetric, trimetric). It also is able to import 3D models from many common CAD/CAE programs, rotate them to a desired orientation, and flatten them to 2D to then proceed with enhancing them with all the mainstream graphics features of DRAW. This additional functionality (and the more vertical orientation of the market) is why Technical Suite costs significantly more than Graphics Suite.
An optional expansion pack adds to Technical Suite more CAD/CAE imports, such as CATIA. That adds significantly more to the price, no doubt due to exhorbitant licensing fees Corel has to pay to the holders of those program formats.
So you might do well to take a serious look at Technical Suite. But for most sign shops' purposes Graphics Suite does the job. It all depends on what specific aspects of your work you intend to use the drawing program for.
Deneba Canvas is another quite good general-purpose vector illustration program that expressly caters to technical illustration, and is actually a bit more CAD-like in its interface scheme, and it also includes the dimension tools, callout tools, and user-defined drawing scales you'd most likely want in the sign trade. (Among almost all general-purpose mainstream drawing programs, Illustrator is the only one still missing those basic features.)
JET
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elektropan -
Does any one know of software that you can import a PDF and then draw on it, dimensions, notes and symbols...technical drawing?. Blue beam have the perfect software for this BUT it's not Mac compatible
You need a PDF editor, at the high end use Adobe's Acrobat Professional, at the low end use the editing features in Preview (pre-loaded on your iMac). However you should probably look at the Mac App Store, you will find many of PDF editing applications. You simply need to find one that suits your needs.
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Need Help to Draw and Drag Triangle - URGENT
Hi everyone - I am developing various proofs of the pythagora's theorem
and the following code draws a triangle on screen and the proof follows -
but i need to know how to drag the triangle such tht 1 angle is always set to 90 degrees.
i.e. i need to resize the triangle by dragging its vertex points by which the1 angle remains at 90 no matter what the size.
The proof has got some graphics code hardcoded in it - i.e. LINES AND POLYGONS have been hardcoded
i need to reconfigure that such that everytime the user increases the size of the triagnle and clicks on next it draws the lines and polygons in the correct area and place
PLEASE HELP
the code is as follows
MAIN CLASS
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import javax.swing.*;
public class TestProof {
TestControl control; // the controls for the visual proof
TestView view; // the drawing area to display proof
// called upon class creation
public TestProof() {
view = new TestView();
view.setBackground(Color.WHITE);
control = new TestControl(view);
Frame f = new Frame("Pythagoras");
f.add(view,"Center");
f.add(control,"South");
f.setSize(600,600);
f.setBackground(Color.lightGray);
f.addMouseMotionListener(
new MouseMotionListener() { //anonymous inner class
//handle mouse drag event
public void mouseMoved(MouseEvent e) {
System.out.println("Mouse " + e.getX() +"," + e.getY());
public void mouseDragged(MouseEvent e) {
System.out.println("Draggg: x=" + e.getX() + "; y=" + e.getY());
JMenu File = new JMenu("File");
JMenuItem Exit = new JMenuItem("Exit");
Exit.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
ExitActionPerformed(evt);
JMenuBar menuBar = new JMenuBar();
menuBar.add(File);
File.add(Exit);
f.add(menuBar,"North");
f.show();
private JMenuBar getMenuBar() {
JMenu File = new JMenu("File");
JMenuItem Exit = new JMenuItem("Exit");
Exit.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
ExitActionPerformed(evt);
JMenuBar menuBar = new JMenuBar();
menuBar.add(File);
File.add(Exit);
return menuBar;
private void ExitActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
System.exit(0);
// for standalone use
public static void main(String args[]) {
TestProof TP = new TestProof();
}Test VIEW
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.text.*;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class TestView extends Canvas {
int TRANSLUCENT = 1;
int sequence; // sequencer that determines what should be drawn
// notes matter
int noteX = 100; // note coordinates
int noteY = 60;
int fontSize = 11; // font size
int lineSpacing // space between two consecutive lines
= fontSize + 2;
Font noteFaceFont; // font used to display notes
// objects matter
Polygon tri; // right-angled triangle with sides A, B, and C
Polygon tri1;
Polygon sqrA; // square with side of length A
Polygon sqrB; // square with side of length B
Polygon sqrC; // square with side of length C
Polygon parA; // parallelogram of base A and height A
Polygon parB; // parallelogram of base B and height B
Polygon poly1;
Polygon poly2;
Polygon poly3;
Polygon poly4;
Polygon poly5;
Polygon poly6;
int X0 = 350; // coordinates of triangle
int Y0 = 350;
int A = 90;//60; // triangle size
int B = 120;//80;
int C = 150;//100;
//CORDS of 2nd triangle
int X1 = 350;
int Y1 = 500;
// notes: three lines per note
String notes[] = {
// note 0
// note 1
// note 2
// note 3
// note 4
// note 5
// note 6
// note 7
// note 8
// note 9
// note 10
// note 11
// note 12
// note 13
// note 14
// constructor
public TestView() {
addMouseMotionListener(
new MouseMotionListener() { //anonymous inner class
//handle mouse drag event
public void mouseMoved(MouseEvent e) {
System.out.println("Mouse " + e.getX() +"," + e.getY());
public void mouseDragged(MouseEvent e) {
System.out.println("Draggg: x=" + e.getX() + "; y=" + e.getY());
// set font
noteFaceFont = new Font("TimesRoman", Font.PLAIN, fontSize);
// (coordinates specified w.r.t. to P0, unless otherwise specified)
// create the triangle
tri = new Polygon();
tri.addPoint(0, 0); // add P0 coordinate
tri.addPoint(A*A/C, -A*B/C); // add A3 coordinate
tri.addPoint(C, 0); // add C1 coordinate
tri.translate(X0, Y0); // place triangle
tri1 = new Polygon();
tri1.addPoint(0,0); // add P0 coordinate
tri1.addPoint(A*A/C +38, +A*B/C); // add A3 coordinate
tri1.addPoint(C, 0); // add C1 coordinate
tri1.translate(X1, Y1);
// create square of side A
sqrA = new Polygon();
sqrA.addPoint(0, 0); // add P0 coordinate
sqrA.addPoint(-A*B/C, -A*A/C); // add A1 coordinate
sqrA.addPoint(-A*(B-A)/C, -A*(A+B)/C); // add A2 coordinate
sqrA.addPoint(A*A/C, -A*B/C); // add A3 coordinate
sqrA.translate(X0, Y0); // place square
// create square of side B
// warning: the coordinate of this object are specified relative to C1
sqrB = new Polygon();
sqrB.addPoint(0, 0); // add C1 coordinate
sqrB.addPoint(B*A/C, -B*B/C); // add B1 coordinate
sqrB.addPoint(B*(A-B)/C, -B*(A+B)/C); // add B2 coordinate
sqrB.addPoint(-B*B/C, -B*A/C); // add A3 coordinate
sqrB.translate(X0 + C, Y0); // place square
// create square of side C
sqrC = new Polygon();
sqrC.addPoint(0, 0); // add P0 coordinate
sqrC.addPoint(C, 0); // add C1 coordinate
sqrC.addPoint(C, C); // add C2 coordinate
sqrC.addPoint(0, C); // add C3 coordinate
sqrC.translate(X0, Y0); // place square
poly1 = new Polygon();
poly1.addPoint(405,279);
poly1.addPoint(413,350);
poly1.addPoint(432,500);
poly1.addPoint(442,571);
poly1.addPoint(500,500);
poly1.addPoint(500,350);
poly2 = new Polygon();
poly2.addPoint(279,297);
poly2.addPoint(404,280);
poly2.addPoint(571,254);
poly2.addPoint(500,350);
poly2.addPoint(350,350);
//Polygon 3
poly3 = new Polygon();
poly3.addPoint(404,280);
poly3.addPoint(350,350);
poly3.addPoint(414,350);
poly4 = new Polygon();
poly4.addPoint(350,350);
poly4.addPoint(350,500);
poly4.addPoint(442,572);
poly4.addPoint(433,500);
poly4.addPoint(414,350);
poly5 = new Polygon();
poly5.addPoint(476,183);
poly5.addPoint(332,225);
poly5.addPoint(278,295);
poly5.addPoint(404,279);
poly5.addPoint(571,254);
poly6= new Polygon();
poly6.addPoint(405,278);
poly6.addPoint(332,224);
poly6.addPoint(476,182);
// create parallelogram of height A
parA = new Polygon();
parA.addPoint(0, 0); // add P0 coordinate
parA.addPoint(0, C); // add C3 coordinate
parA.addPoint(A*A/C, C - A*B/C); // add Q0 coordinate
parA.addPoint(A*A/C, -A*B/C); // add A3 coordinate
parA.translate(X0,Y0); // place parallelogram
// create parallelogram of height B
// warning: the coordinate of this object are specified from C1
parB = new Polygon();
parB.addPoint(0, 0); // add C1 coordinate
parB.addPoint(-B*B/C, -B*A/C); // add A3 coordinate
parB.addPoint(A*A/C - C, C - A*B/C); // add Q0 coordinate
parB.addPoint(0, C); // add C2 coordinate
parB.translate(X0 + C, Y0);
// place parallelogram
// depending on the sequence number we draw certain objects
public void paint(Graphics gfx) {
super.paint(gfx);
Graphics2D g = (Graphics2D) gfx;
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
// text first, then objects (and animation)
// we always output some notes
g.drawString(notes[3*sequence], noteX, noteY);
g.drawString(notes[3*sequence + 1], noteX, noteY + lineSpacing);
g.drawString(notes[3*sequence + 2], noteX, noteY + 2*lineSpacing);
// the object are drawn in an order so that they are properly overlapped
if(sequence == 13) {
g.setColor(Color.green);
g.fillPolygon(poly1);
g.fillPolygon(poly2);
g.fillPolygon(poly3);
g.fillPolygon(poly4);
g.fillPolygon(poly5);
g.setColor(Color.RED);
g.setColor(Color.GREEN);
g.drawLine(413,351,433,499);
g.setColor(Color.white);
g.fillPolygon(tri);
g.fillPolygon(tri1);
g.fillPolygon(poly6);
if(sequence == 12 ) {
g.setColor(Color.green);
g.fillPolygon(poly1);
g.fillPolygon(poly2);
g.fillPolygon(poly3);
g.fillPolygon(poly4);
g.fillPolygon(poly5);
g.setColor(Color.BLACK);
if(sequence == 11){
g.setColor(Color.green);
g.fillPolygon(poly1);
g.fillPolygon(poly3);
g.fillPolygon(poly4);
g.setColor(Color.BLACK);
if(sequence == 8 ){
g.setColor(Color.green);
g.fillPolygon(poly5);
g.setColor(Color.MAGENTA);
g.drawString("E",578,254);
g.drawString("D",268,302);
g.setColor(Color.black);
g.drawArc(250,150,350,250,320,65);
else if (sequence == 9 ){
g.setColor(Color.green);
g.fillPolygon(poly2);
g.setColor(Color.MAGENTA);
g.drawString("E",578,254);
g.drawString("D",268,302);
g.setColor(Color.black);
g.drawArc(250,150,350,250,320,65);
if( sequence == 10){
g.setColor(Color.green);
g.fillPolygon(poly2);
g.fillPolygon(poly5);
g.setColor(Color.black);
g.setColor(Color.MAGENTA);
g.drawString("E",578,254);
g.drawString("D",268,302);
g.setColor(Color.black);
g.drawArc(250,150,350,250,320,65);
if(sequence == 7){
g.setColor(Color.green);
g.fillPolygon(poly2);
g.setColor(Color.MAGENTA);
g.drawString("E",578,254);
g.drawString("D",268,302);
g.setColor(Color.black);
if(sequence == 6){
g.setColor(Color.yellow);
g.fillPolygon(poly2);
g.setColor(Color.green);
g.fillPolygon(poly3);
g.setColor(Color.blue);
g.fillPolygon(poly4);
g.setColor(Color.black);
g.drawArc(250,175,350,275,300,65);
//g.drawArc(250,150,350,250,320,65);
g.drawLine( 606,309,599,299);
g.drawLine(592,313, 599,299);
g.drawString("+90 degrees",605,378);
if (sequence == 5 ) {
g.setColor(Color.yellow);
g.fillPolygon(poly2);
g.setColor(Color.black);
if (sequence == 4) {
g.setColor(Color.YELLOW);
g.fillPolygon(poly1);
g.setColor(Color.black);
g.drawArc(319,310,250,195,89,-35);
g.drawLine(499,319, 492,312);
g.drawLine(499,319, 492,325);
g.drawArc(200,180, 233,238,-120,-60);
g.drawLine(200,298, 208,309);
g.drawLine(200,298, 194,313);
g.drawString("-90 degrees",227,347);
if (sequence >= 3) {
g.drawLine(404,279,442,572);
// draw the squares
if (sequence >= 2) {
g.drawLine(278,296,572,254);
// draw the squares
if (sequence >= 1) {
g.drawLine(333,224,476,182);
g.drawPolygon(tri1);
// always draw the triangle
g.drawPolygon(tri);
g.drawPolygon(sqrA);
g.drawPolygon(sqrB);
g.drawPolygon(sqrC);
g.setColor(Color.MAGENTA);
g.drawString("C", X0 + C/2 - fontSize/2, Y0 + lineSpacing);
g.drawString("A",
X0 + A*A/(2*C) - fontSize*A/B/2,
Y0 - A*B/(2*C) - lineSpacing*A/B);
g.drawString("B",
X0 + C - B*B/(2*C) - fontSize*A/B/2,// the last "-" isn't log.
Y0 - B*A/(2*C) - lineSpacing*A/B);
public void redraw(int sequence) {
this.sequence = sequence;
repaint();
}TEST CONTROL
* TestControl.java
* Created on 28 February 2005, 11:16
import java.awt.*;
import java.awt.event.*;
import java.text.*;
import javax.swing.JFrame;
* @author Kripa Bhojwani
public class TestControl extends Panel implements ActionListener {
TestView view;
int sequence; // event sequence
// constructor
public TestControl(TestView view) {
Button b = null;
Label label = new Label("A^2 ");
this.view = view; // initialize drawble area
sequence = 0; // initialize sequence
b = new Button("Prev");
b.addActionListener(this);
add(b);
b = new Button("Next");
b.addActionListener(this);
add(b);
add(label);
// exported method
public void actionPerformed(ActionEvent ev) {
String label = ev.getActionCommand();
if (label.equals("Prev")) {
if (sequence >0) {
--sequence;
else {
if (sequence < 15) {
++sequence;
this.setEnabled(false); // disable the controls
view.redraw(sequence);
this.setEnabled(true); // enable the controls
}Please help --- really need to sort this out...
THANKSOne of the problems you face is that it is hard to recognise which parts of your code are drawing the triangle. This is because you are writing code in a procedural way rather than an object oriented way.
In object oriented code you would have a triangle object that could draw itself. You would create the triangle object by specifying its sizes and angles in some way. Then it should be easy to change the triangles sizes and angles and ask all the drawn objects to redraw themselves. -
I need help to draw an image and move it plz plz : )
Ok, so I have this whole code and I understand most of it but not all of it but I'm trying to make image "drop.gif" to move down the right side of the window. For each shot that is taken the image moves down ever so much and if the image hits the Entity ship "background" than notify death. PLease anyone help me !
there are 7 classes but here is the main ...
package spaceinvaderss;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.image.BufferStrategy;
import java.util.ArrayList;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Main extends Canvas {
/*A Canvas component represents a blank rectangular area of the screen onto which the application can draw or from which the application can trap input events from the user.
An application must subclass the Canvas class in order to get useful functionality such as creating a custom component.
The paint method must be overridden in order to perform custom graphics on the canvas.*/
/** The stragey that allows us to use accelerate page flipping.*/
private BufferStrategy strategy;
/** True if the game is currently "running", i.e. the game loop is looping */
private boolean gameRunning = true;
/** The list of all the entities that exist in our game */
private ArrayList entities = new ArrayList();
/** The list of entities that need to be removed from the game this loop */
private ArrayList removeList = new ArrayList();
/** The entity representing the player */
private Entity ship;
/** The entity representing the alien */
private Entity alien;
/** The speed at which the player's ship should move (pixels/sec) */
private double moveSpeed = 600;
/** The time at which last fired a shot */
private long lastFire = 0;
/** The interval between our players shot (ms) */
private long firingInterval = 400;
/** timer */
private long time = 0;
/** The number of aliens left on the screen */
private int alienCount;
/** The message to display which waiting for a key press */
private String message = "";
/** True if we're holding up game play until a key has been pressed */
private boolean waitingForKeyPress = true;
/** True if the left cursor key is currently pressed */
private boolean leftPressed = false;
/** True if the right cursor key is currently pressed */
private boolean rightPressed = false;
/** True if we are firing */
private boolean firePressed = false;
/** True if game logic needs to be applied this loop, normally as a result of a game event */
private boolean logicRequiredThisLoop = false;
private static Image drop;
/** The constant for the width*/
private int DOMAIN = 800;
/** The constant fot the length*/
private int RANGE = 950;
/** The constant for the number of rows of aliens */
private int numbaofrows = 8;
/** The constant for the number of aliens per row */
private int aliensperrow = 12;
/** The constant for the percent of which the speed increases*/
private double speedincrease = 1.02;
/** Starts the variable that counts the shots*/
private int shotsfired = 0;
/** Construct our game and set it running.*/
public Main() {
// Creates a frame to contain Main.
JFrame container = new JFrame("SPACE INVADERS !!! WOOT !!! WOOT !!!");
// Gets a hold of the content of the frame and sets up the resolution of the game
// Names the inside of the "container" as panel.
JPanel panel = (JPanel) container.getContentPane();
// Stes the demensions of the panel.
panel.setPreferredSize(new Dimension(DOMAIN,RANGE));
//Sets the layout as nothing which overrides any automatic properties.
panel.setLayout(null);
// Sets up our canvas size and puts it into the content of the frame
setBounds(0, 0, DOMAIN, RANGE);
panel.add(this);
// Tell AWT not to bother repainting our canvas since we're
// going to do that our self in accelerated mode.
setIgnoreRepaint(true);
// Actually sizes the window approximately.
container.pack();
// Makes it so that the window can't be resized.
container.setResizable(false);
// Makes the window visible.
container.setVisible(true);
// Add a listener to respond to the user pressing the x.
// End the program when the window is closed.
container.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
// add a key input system (defined below) to our canvas
// so we can respond to key pressed
addKeyListener(new KeyInputHandler());
// request the focus so key events come to us
requestFocus();
// Create the buffering strategy which will allow AWT
// to manage our accelerated graphics.
createBufferStrategy(2);
strategy = getBufferStrategy();
// initialise the entities in our game so there's something
// to see at startup
initEntities();
time = System.currentTimeMillis();
* Start a fresh game, this should clear out any old data and
* create a new set.
private void startGame() {
// clear out any existing entities and intialise a new set
entities.clear();
initEntities();
// blank out any keyboard settings we might currently have
leftPressed = false;
rightPressed = false;
firePressed = false;
* Initialise the starting state of the entities (ship and aliens). Each
* entitiy will be added to the overall list of entities in the game.
private void initEntities() {
ClassLoader cloader = Main.class.getClassLoader();
drop = Toolkit.getDefaultToolkit().getImage(cloader.getResource("drop.gif"));
prepareImage(drop, this);
// create the player ship and place it in the center of the screen
ship = new ShipEntity(this,"background.gif", 0, (RANGE - 75));
entities.add(ship);
ship = new ShipEntity(this,"ship.gif", (DOMAIN / 2) - 0, (RANGE - 50));
entities.add(ship);
// create a block of aliens
alienCount = 0;
for (int row = 0; row < numbaofrows; row++) {
for (int x = 0; x < aliensperrow; x++) {
alien = new AlienEntity(this,"alien.gif", 100 + (x*50),(50)+row*30);
entities.add(alien);
alienCount++;
* Notification from a game entity that the logic of the game
* should be run at the next opportunity (normally as a result of some
* game event)
public void updateLogic() {
logicRequiredThisLoop = true;
* Remove an entity from the game. The entity removed will
* no longer move or be drawn.
* Remove the entity
public void removeEntity(Entity entity) {
removeList.add(entity);
/**Notify that the player has died.*/
public void notifyDeath() {
message = "Oh no! The aliens win, wanna try again?";
waitingForKeyPress = true;
/** Notification that the player has won since all the aliensare dead.*/
public void notifyWin() {
long time2;
time2 = (System.currentTimeMillis() - time) / 1000;
int acuracy = 1000*(aliensperrow*numbaofrows)/shotsfired;
message = "Congradulations! You win! Your time was: " + time2 + " seconds. Your acuracy was " + acuracy + "%.";
waitingForKeyPress = true;
/**Notification that an alien has been killed*/
public void notifyAlienKilled() {
// reduce the alient count, if there are none left, the player has won!
alienCount--;
if (alienCount == 0) {
notifyWin();
// if there are still some aliens left then they all need to get faster, so
// speed up all the existing aliens
for (int i = 0; i < entities.size(); i++) {
Entity entity = (Entity) entities.get(i);
if (entity instanceof AlienEntity) {
// speed up every time the aliens move down
entity.setHorizontalMovement(entity.getHorizontalMovement() * speedincrease);
/**Attempt to fire a shot from the player. Its called "try" since we must first
* check that the player can fire at this point, i.e. has he/she waited long
* enough between shots.*/
public void tryToFire() {
// check that we have been waiting long enough to fire
if (System.currentTimeMillis() - lastFire < firingInterval) {
return;
// if we waited long enough, create the shot entity, and record the time.
lastFire = System.currentTimeMillis();
ShotEntity shot = new ShotEntity(this, "bullet.gif", ship.getX() + 27, ship.getY() - 30);
entities.add(shot);
* The main game loop. This loop is running during all game
* play as is responsible for the following activities:
* - Working out the speed of the game loop to update moves
* - Moving the game entities
* - Drawing the screen contents (entities, text)
* - Updating game events
* - Checking Input
public void gameLoop() {
long lastLoopTime = System.currentTimeMillis();
// Keep looping around till the game ends.
while (gameRunning) {
// Work out how long its been since the last update, this
// will be used to calculate how far the entities should
// move this loop.
long delta = System.currentTimeMillis() - lastLoopTime;
lastLoopTime = System.currentTimeMillis();
// Get hold of a graphics context for the accelerated
// surface and black it out.
Graphics2D g = (Graphics2D) strategy.getDrawGraphics();
g.setColor(Color.black);
g.fillRect(0, 0, DOMAIN, RANGE);
// Cycle around asking for each entity to move itself.
if (!waitingForKeyPress) {
for (int i = 0; i < entities.size(); i++) {
Entity entity = (Entity) entities.get(i);
entity.move(delta);
// cycle round drawing all the entities we have in the game
for (int i = 0; i < entities.size(); i++) {
Entity entity = (Entity) entities.get(i);
entity.draw(g);
// brute force collisions, compare every entity against
// every other entity. If any of them collide notify
// both entities that the collision has occured
for (int p = 0; p < entities.size(); p++) {
for (int s = p + 1; s < entities.size(); s++) {
Entity me = (Entity) entities.get(p);
Entity him = (Entity) entities.get(s);
if (me.collidesWith(him)) {
me.collidedWith(him);
him.collidedWith(me);
// remove any entity that has been marked for clear up
entities.removeAll(removeList);
removeList.clear();
// if a game event has indicated that game logic should
// be resolved, cycle round every entity requesting that
// their personal logic should be considered.
if (logicRequiredThisLoop) {
for (int i = 0; i < entities.size(); i++) {
Entity entity = (Entity) entities.get(i);
entity.doLogic();
logicRequiredThisLoop = false;
// if we're waiting for an "any key" press then draw the
// current message
if (waitingForKeyPress) {
g.setColor(Color.green);
g.drawString(message,(DOMAIN-g.getFontMetrics().stringWidth(message)) / 2, 250);
g.drawString("TO PLAY, PRESS ANY KEY : )", (DOMAIN-g.getFontMetrics().stringWidth("TO PLAY, PRESS ANY KEY : )")) / 2, 40);
// Clear up the graphics.
g.dispose();
// Flip the buffer over.
strategy.show();
// resolve the movement of the ship. First assume the ship
// isn't moving. If either cursor key is pressed then
// update the movement appropraitely
ship.setHorizontalMovement(0);
if ((leftPressed) && (!rightPressed)) {
ship.setHorizontalMovement(-moveSpeed);
} else if ((rightPressed) && (!leftPressed)) {
ship.setHorizontalMovement(moveSpeed);
// if we're pressing fire, attempt to fire
if (firePressed) {
shotsfired++;
tryToFire();
// finally pause for a bit. Note: this should run us at about
// 100 fps but on windows this might vary each loop due to
// a bad implementation of timer
try { Thread.sleep(10); } catch (Exception e) {}
* A class to handle keyboard input from the user. The class
* handles both dynamic input during game play, i.e. left/right
* and shoot, and more static type input (i.e. press any key to
* continue)
* This has been implemented as an inner class more through
* habbit then anything else. Its perfectly normal to implement
* this as seperate class if slight less convienient.
private class KeyInputHandler extends KeyAdapter {
/** The number of key presses we've had while waiting for an "any key" press */
private int pressCount = 1;
* Notification from AWT that a key has been pressed. Note that
* a key being pressed is equal to being pushed down but NOT
* released. Thats where keyTyped() comes in.
* @param e The details of the key that was pressed
public void keyPressed(KeyEvent e) {
// if we're waiting for an "any key" typed then we don't
// want to do anything with just a "press"
if (waitingForKeyPress) {
return;
if (e.getKeyCode() == KeyEvent.VK_LEFT) {
leftPressed = true;
if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
rightPressed = true;
if (e.getKeyCode() == KeyEvent.VK_SPACE) {
firePressed = true;
* Notification from AWT that a key has been released.
* @param e The details of the key that was released
public void keyReleased(KeyEvent e) {
// if we're waiting for an "any key" typed then we don't
// want to do anything with just a "released"
if (waitingForKeyPress) {
return;
if (e.getKeyCode() == KeyEvent.VK_LEFT) {
leftPressed = false;
if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
rightPressed = false;
if (e.getKeyCode() == KeyEvent.VK_SPACE) {
firePressed = false;
* Notification from AWT that a key has been typed. Note that
* typing a key means to both press and then release it.
* @param e The details of the key that was typed.
public void keyTyped(KeyEvent e) {
// if we're waiting for a "any key" type then
// check if we've recieved any recently. We may
// have had a keyType() event from the user releasing
// the shoot or move keys, hence the use of the "pressCount"
// counter.
if (waitingForKeyPress) {
if (pressCount == 1) {
// since we've now recieved our key typed
// event we can mark it as such and start
// our new game
waitingForKeyPress = false;
startGame();
pressCount = 0;
} else {
pressCount++;
// if we hit escape, then quit the game
if (e.getKeyChar() == 27) {
System.exit(0);
* The entry point into the game. We'll simply create an
* instance of class which will start the display and game
* loop.
* @param argv The arguments that are passed into our game
public static void main(String argv[]) {
Main g = new Main();
// Starts the main game loop, this method will not return until the game has finished running. Hence we are
// using the actual main thread to run the game.
g.gameLoop();
}Ap_Compsci_student_13 wrote:
ok sorry but doesn't sscce say to post the whole code?the first S is Short, and yes, it needs to be all the code needed to illustrate the problem and let use reproduce it. If you were developing a new Web framework, your example might be short, but for a student game it's very long. -
Need help to draw recangle on video
Hi guys ,
Below I have pasted my code . In this code I have defined frame and in that frame stored video run. The other class has defined rectangle in cnvas . My problem is that I want rectangle to be drawn on video player and I havnt been successful.
So its my reequest to please help me out.
Thanks a ton in advance........
public class Map extends JFrame
* MAIN PROGRAM / STATIC METHODS
public static void main(String args[])
Map mdi = new Map();
static void Fatal(String s)
MessageBox mb = new MessageBox("JMF Error", s);
* VARIABLES
JMFrame jmframe = null;
JDesktopPane desktop;
FileDialog fd = null;
CheckboxMenuItem cbAutoLoop = null;
Player player = null;
Player newPlayer = null;
//JPanel glass = null;
SelectionArea drawingPanel;
String filename;
// code//
//ArrayList<Rectangle> rectangles = new ArrayList<Rectangle>();
// boolean stop=false;
* METHODS
public Map()
super("Java Media Player");
drawingPanel = new SelectionArea(this);
// Add the desktop pane
setLayout( new BorderLayout() );
desktop = new JDesktopPane();
desktop.setDoubleBuffered(true);
add("Center", desktop);
setMenuBar(createMenuBar());
setSize(640, 480);
setVisible(true);
//add(drawingPanel);
//drawingPanel.setVisible(true);
try
UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
catch (Exception e)
System.err.println("Could not initialize java.awt Metal lnf");
addWindowListener( new WindowAdapter()
public void windowClosing(WindowEvent we)
System.exit(0);
Manager.setHint(Manager.LIGHTWEIGHT_RENDERER, new Boolean(true));
private MenuBar createMenuBar()
ActionListener al = new ActionListener()
public void actionPerformed(ActionEvent ae)
String command = ae.getActionCommand();
if (command.equals("Open"))
if (fd == null)
fd = new FileDialog(Map.this, "Open File",
FileDialog.LOAD);
fd.setDirectory("/movies");
fd.show();
if (fd.getFile() != null)
String filename = fd.getDirectory() + fd.getFile();
openFile("file:" + filename);
else if (command.equals("Exit"))
dispose();
System.exit(0);
MenuItem item;
MenuBar mb = new MenuBar();
// File Menu
Menu mnFile = new Menu("File");
mnFile.add(item = new MenuItem("Open"));
item.addActionListener(al);
mnFile.add(item = new MenuItem("Exit"));
item.addActionListener(al);
// Options Menu
Menu mnOptions = new Menu("Options");
cbAutoLoop = new CheckboxMenuItem("Auto replay");
cbAutoLoop.setState(true);
mnOptions.add(cbAutoLoop);
mb.add(mnFile);
mb.add(mnOptions);
return mb;
* Open a media file.
public void openFile(String filename)
String mediaFile = filename;
Player player = null;
// URL for our media file
URL url = null;
try
// Create an url from the file name and the url to the
// document containing this applet.
if ((url = new URL(mediaFile)) == null)
Fatal("Can't build URL for " + mediaFile);
return;
// Create an instance of a player for this media
try
player = Manager.createPlayer(url);
catch (NoPlayerException e)
Fatal("Error: " + e);
catch (MalformedURLException e)
Fatal("Error:" + e);
catch (IOException e)
Fatal("Error:" + e);
if (player != null)
this.filename = filename;
JMFrame jmframe = new JMFrame(player, filename);
desktop.add(jmframe);
if (player.getVisualComponent() != null)
getContentPane().add(player.getVisualComponent());
player.start();
jmframe.add(drawingPanel);
drawingPanel.setVisible(true);
/*validate();
public void paint(Graphics g)
drawingPanel.repaint();
public void update(Graphics g)
paint(g);
drawingPanel.repaint();
class SelectionArea extends Canvas implements ActionListener, MouseListener, MouseMotionListener
Rectangle currentRect;
Map controller;
//for double buffering
Image image;
Graphics offscreen;
public SelectionArea(Map controller)
super();
this.controller = controller;
addMouseListener(this);
addMouseMotionListener(this);
public void actionPerformed(ActionEvent ae)
repaintoffscreen();
public void repaintoffscreen()
image = createImage(this.getWidth(), this.getHeight());
offscreen = image.getGraphics();
Dimension d = size();
if(currentRect != null)
//Rectangle box = new Rectangle();
//box.getDrawable(currentRect, d);
Rectangle box = getDrawableRect(currentRect, d);
//Draw the box outline.
offscreen.drawRect(box.x, box.y, box.width - 1, box.height - 1);
repaint();
public void mouseEntered(MouseEvent me) {}
public void mouseExited(MouseEvent me){ }
public void mouseClicked(MouseEvent me){}
public void mouseMoved(MouseEvent me){}
public void mousePressed(MouseEvent me)
currentRect = new Rectangle(me.getX(), me.getY(), 0, 0);
repaintoffscreen();
public void mouseDragged(MouseEvent me)
System.out.println("here in dragged()");
currentRect.setSize(me.getX() - currentRect.x, me.getY() - currentRect.y);
repaintoffscreen();
repaint();
public void mouseReleased(MouseEvent me)
currentRect.setSize(me.getX() - currentRect.x, me.getY() - currentRect.y);
repaintoffscreen();
repaint();
public void update(Graphics g)
paint(g);
public void paint(Graphics g)
g.drawImage(image, 0, 0, this);
Rectangle getDrawableRect(Rectangle originalRect, Dimension drawingArea)
int x = originalRect.x;
int y = originalRect.y;
int width = originalRect.width;
int height = originalRect.height;
//Make sure rectangle width and height are positive.
if (width < 0)
width = 0 - width;
x = x - width + 1;
if (x < 0)
width += x;
x = 0;
if (height < 0)
height = 0 - height;
y = y - height + 1;
if (y < 0)
height += y;
y = 0;
//The rectangle shouldn't extend past the drawing area.
if ((x + width) > drawingArea.width)
width = drawingArea.width - x;
if ((y + height) > drawingArea.height)
height = drawingArea.height - y;
return new Rectangle(x, y, width, height);
}Chances of someone reading a gazillion lines of unformatted code: < 1%
Paste your code (from the source), highlight it and click the CODE button to retain formatting and make it readable. -
Need help to draw a graph from the output I get with my program please
Hi all,
I please need help with this program, I need to display the amount of money over the years (which the user has to enter via the textfields supplied)
on a graph, I'm not sure what to do further with my program, but I have created a test with a System.out.println() method just to see if I get the correct output and it looks fine.
My question is, how do I get the input that was entered by the user (the initial deposit amount as well as the number of years) and using these to draw up the graph? (I used a button for the user to click after he/she has entered both the deposit and year values to draw the graph but I don't know how to get this to work?)
Please help me.
The output that I got looked liked this: (just for a test!) - basically this kind of output must be shown on the graph...
The initial deposit made was: 200.0
After year: 1 Amount is: 210.00
After year: 2 Amount is: 220.50
After year: 3 Amount is: 231.53
After year: 4 Amount is: 243.10
After year: 5 Amount is: 255.26
After year: 6 Amount is: 268.02
After year: 7 Amount is: 281.42
After year: 8 Amount is: 295.49
After year: 9 Amount is: 310.27
After year: 10 Amount is: 325.78
After year: 11 Amount is: 342.07
After year: 12 Amount is: 359.17
After year: 13 Amount is: 377.13
After year: 14 Amount is: 395.99
After year: 15 Amount is: 415.79
After year: 16 Amount is: 436.57
After year: 17 Amount is: 458.40And here is my code that Iv'e done so far:
import javax.swing.*;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.lang.Math;
import java.text.DecimalFormat;
public class CompoundInterestProgram extends JFrame implements ActionListener {
JLabel amountLabel = new JLabel("Please enter the initial deposit amount:");
JTextField amountText = new JTextField(5);
JLabel yearsLabel = new JLabel("Please enter the numbers of years:");
JTextField yearstext = new JTextField(5);
JButton drawButton = new JButton("Draw Graph");
public CompoundInterestProgram() {
super("Compound Interest Program");
setSize(500, 500);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
amountText.addActionListener(this);
yearstext.addActionListener(this);
JPanel panel = new JPanel();
panel.setBackground(Color.white);
panel.add(amountLabel);
amountLabel.setToolTipText("Range of deposit must be 20 - 200!");
panel.add(amountText);
panel.add(yearsLabel);
yearsLabel.setToolTipText("Range of years must be 1 - 25!");
panel.add(yearstext);
panel.add(drawButton);
add(panel);
setVisible(true);
public static void main(String[] args) {
DecimalFormat dec2 = new DecimalFormat( "0.00" );
CompoundInterestProgram cip1 = new CompoundInterestProgram();
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(new GraphPanel());
f.setSize(500, 500);
f.setLocation(200,200);
f.setVisible(true);
Account a = new Account(200);
System.out.println("The initial deposit made was: " + a.getBalance() + "\n");
for (int year = 1; year <= 17; year++) {
System.out.println("After year: " + year + " \t" + "Amount is: " + dec2.format(a.getBalance() + a.calcInterest(year)));
@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
class Account {
double balance = 0;
double interest = 0.05;
public Account() {
balance = 0;
interest = 0.05;
public Account(int deposit) {
balance = deposit;
interest = 0.05;
public double calcInterest(int year) {
return balance * Math.pow((1 + interest), year) - balance;
public double getBalance() {
return balance;
class GraphPanel extends JPanel {
public GraphPanel() {
public void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g2.setColor(Color.red);
}Your help would be much appreciated.
Thanks in advance.watertownjordan wrote:
http://www.jgraph.com/jgraph.html
The above is also good.Sorry but you need to look a bit more closely at URLs that you cite. What the OP wants is a chart (as in X against Y) not a graph (as in links and nodes) . 'jgraph' deals with links and nodes.
The best free charting library that I know of is JFreeChart from www.jfree.org. -
Need Help with drawing in Photoshop CC
I am drawing a picture and want to select and copy an element but don't know how. Can someone help me please?
If element is on it's own layer, from Layers panel right click and select duplicate layer.
Nancy O. -
Hi friends,
I'm newbie in drawing graphics with Java, and I need some help in a specific part of my program.
What I want to do is to draw a waveform of a sound file. That waveform is built based on the amplitude of each sound sample. So I have a big vector full of those amplitudes. Now what I need to do is plot each point on the screen. The x coordinate of the point will be its time position in the time axis. The y coordinate of the point will be the amplitude value. Ok... Now I have a lot of doubts...
1 - can someone give me a simple example on how to plot points in a java app? I know I have to extend a JPainel class, but I don't know much about those paint, and repaint methods. It's all weird to me. I already searched through the tutorial and the web, but I couldn't see a simple, good example. Can someone hand me this?
2 - Once I know how to draw those graphics, I need to find a way to put a button, or anything like that, in my app, so the user can press that button to see to next part of the waveform, since the wave is BIG, and doesn't fit entirely on the screen. Is this button idea ok? Can I use some sort of SCROLL on it, would it be better?
Well... I'm trying to learn it all. ANY help will be appreciated, ANY good link, little hint, first step, anything.
Thanks for all, in advance.
Leonardo
(Brazil)This will lead you, in this sample you have a panel and a button,
every click will fill a vector with random 700 points and draw them on the panel,
import java.awt.*;
import java.awt.event.*;
import java.util.*;
public class Wave extends Frame implements ActionListener
WPanel pan = new WPanel();
Vector points = new Vector();
Button go = new Button("Go");
Panel cont = new Panel();
public Wave()
super();
setBounds(6,6,700,400);
addWindowListener(new WindowAdapter()
{ public void windowClosing(WindowEvent ev)
dispose();
System.exit(0);
add("Center",pan);
go.addActionListener(this);
cont.add(go);
add("South",cont);
setVisible(true);
public void actionPerformed(ActionEvent a)
points.removeAllElements();
for (int j=0; j < 700; j++)
int y = (int)(Math.random()*350);
points.add(new Point(j,y+1));
pan.draw(points);
public class WPanel extends Panel
Vector points;
public WPanel()
setBackground(Color.pink);
public void draw(Vector points)
this.points = points;
repaint();
public void paint(Graphics g)
super.paint(g);
if (points == null) return;
for (int j=1; j < points.size(); j++)
Point p1 = (Point)points.get(j-1);
Point p2 = (Point)points.get(j);
g.drawLine(p1.x,p1.y,p2.x,p2.y);
public static void main (String[] args)
new Wave();
Noah -
im in the process of making a network whiteboard as a project for college and i was wondering if anyone could help me with a problem im having. When my application minimises or a window is placed over the application the drawing is erased, even if a window is placed over a certain part of the application it erases the part it covers is there any way to stop this from happening i cant seem to fix it, any help is appreciated, thanks
You should be buffering what the whiteboard is to draw, either as a BufferedImage or in some
data structure so that you can refresh when asked to repaint. Are you doing that, or are you
just drawing new graphics as it arrives from the server? -
Right Click- More Field Help- Technical Help = No help available
Hi,
I want to right click on a WDA, click on More Field Help then click on technical help to see what the underlying WD components, views etc.... are. But when I right clcik and then click More Field Help all I get is No Help Available. I have not touch the application parameter WDHIDEMOREFIELDHELPASDEFAULT. Nor do I see it on the parameters tab. So there must be something somewhere that is turing it off. Even stranger is there are to WDA's for this component. One works and one doesn't. Wonder if it is getting set on fly in the code.
Anyone seen this kind of behavior and could shed some light?
Thanks!Hi Jennifer ,
To get the more field help you need to have SAP_ALL profile to your user id .
there is no separate setting or config .
Thanks & Regards
Pradeep Kumar Dondeti -
I need help on drawing a circuit
Hi im a student and relatively new to Multisim. I need to draw a circuit that shows a PIR sensor connected up with 12V relay that's it connected to 85 LED's at 3.5V 20mA. The LED's contain a resistor of 1K ohms every 3 LED's. My power supply is a 12V battery.
If anyone could put me in the right direction for drawing this circuit it would be much appreciated.Hello,
If you're looking for components, go to the component selector window (ctrl+w), there you'll find LEDs under the Diode group, and resistors under Basic. There is alot of helpful resources on how to use MultSIM here on the NI website. You'll find kownledge base articles, tutorials, labs, and help pages.
http://sine.ni.com/psp/app/doc/p/id/psp-412
Best of luck with your studies,
Miguel V
National Instruments -
I just upgraded to CP 5. Need help with drawing objects.
I am trying to put a simple drawing object around a word. Like a square. I can't figure out how to not have any fill, just the outline of the box. Any suggestions? I was able to do this in CP 4.
Hi there
Personally, I'd use a Highlight Box to accomplish this. But that's just me.
Here are the steps for a square drawing object. I'll assume you have already inserted the object and placed it and all you want are instructions for dealing with the fill.
Look inside the properties inspector at the Fill & Stroke section. Click the Fill color and configure Alpha to 0%.
Cheers... Rick
Helpful and Handy Links
Begin learning Captivate 5 moments from now! $29.95
Captivate Wish Form/Bug Reporting Form
Adobe Certified Captivate Training
SorcererStone Blog
Captivate eBooks -
Need help on drawing multiple squares on the screen
I am working on a project for aircraft seating and what i have to do is create square on the screen as seat. I got to draw 180 squares on the screen and it sounds easy but i have been stuck at it for about 10 days now my superviser doesn't know java so he can't help me on what i should do next and java superviser's told me they have no time to see me so if anyone here can help to guide me where i am goin wrong or how i should do it would be very helpful. Here is the code i have so far i think i am maybe close to gettin it working but then again i could be far off.
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Dimension;
import java.awt.GridLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Seating extends JFrame {
private JPanel boardPanel;
private JPanel panel2;
private Square board[][];
public Seating() {
boardPanel = new JPanel();
boardPanel.setLayout(new GridLayout(6,30,0,0));
//create board
board = new Square[6][30];
//rows in the board
for(int row = 0; row < board.length; row++)
//column on the board
for(int column = 0; column < board[row].length; column++)
//create square
board[row][column] = new Square(' ', 3 * row + column);
//add square
boardPanel.add(board[row][column]);
panel2 = new JPanel();
panel2.add(boardPanel, BorderLayout.CENTER);
add(panel2, BorderLayout.CENTER);
setSize(2000,1500);
setVisible(true);
private class Square extends JPanel
public Dimension getPreferedSize()
return new Dimension(20,20);
public Dimension getMinimumSize()
return getPreferedSize();
public void paintComponent(Graphics g)
super.paintComponents(g);
g.drawRect(0, 0, 19, 19);
}Yeah I'd make a Seat class, subclassing JLabel, and then add some business logic to them to reflect that. For example, if they're already booked, given them a different color and disable clicks on them. If they're bookable, add a mouse click listener. Maybe I'd make different subclasses of Seat for those different roles. I'd add them all to the grid, but also add them to a Map indexed by seat name or something so I could find them and update them as needed.
Maybe you are looking for
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INVALID_SESSION, INVALID_TICKET, INVALID_INSTANCE, TOOMANYATTEMPTS is there any documentation?
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How to generate XML Publisher via WebSerivce
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