Cursor
Java Source:
/*
ADAM SAWYER
APRIL 7 2000
applet that you click the screen & lines follow your mouse, cool 3d effects!
*/
import java.awt.*; //need to draw lines
import java.applet.Applet; //need for applet
public class cursor extends Applet //class definition
{
int mx; //varible for holding current mouse position X
int my; // " " " " " " Y
final int MAX_NUM = 1000; //size of array
int ox[]=new int[MAX_NUM]; //array of int for holding click postions X
int oy[]=new int[MAX_NUM]; // " " " " " " " Y
int c; //counter
public void init() //intialize method
{
mx=my=c=0; //set varibles to 0
setBackground(Color.red); //sets background color
for(int i=0;i<MAX_NUM;i++) //loop to set all members of both arrays to 0
ox[i]=oy[i]=0; //sets all to 0
}
public void paint(Graphics g) //paint method called y repaint();
{
for(int i=0; i<c; i++) //loop to draw all array elements
{
if(ox[i]==0||oy[i]==0) //dont draw if pints are 0,0
break; //if 0,0 kill loop
else g.drawLine(ox[i],oy[i],mx,my);//draws line to current mouse postion
}
g.drawString("Lines: "+c,1,size().height-5);
}
public boolean mouseMove(Event e, int x, int y)//called when mouse is moved
{
mx=x; //set mx to mouse postion X
my=y; //set my to mouse postion Y
repaint();
return true; //returns true
}
public boolean mouseDown(Event e, int x, int y)//called when mouse is clicked
{
ox[c]=x; //adds click X to array
oy[c]=y; //adds click Y to array
c++; //increments C
return true; //returns true
}
public boolean mouseDrag(Event e, int x, int y)//called when the mouse is being dragged
{
ox[c]=x; //sets the draging X to the array
oy[c]=y; // " " " Y " " "
mx=x; //sets the current mouse position X to the draggin point
my=y; // " " " " " Y " " " "
c++; //increments c
repaint(); //calls paint()
return true; //return true
}
}
// end of program
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