[JAVA100 Case]030, three-dimensional box

Import java.awt.*;


import java.awt.event.*;


import javax.swing.*;


/**


* <p>title: Square block Diagram </p>


* <p>description: Draws a bounding rectangle, gets the mouse event to rotate the cube according to the mouse position. </p>


* <p>copyright:copyright (c) 2003</p>


* <p>Filename:Gr3d1m.java</p>


* @version 1.0


*/


public class Gr3d1m extends JFrame


implements Mouselistener,mousemotionlistener {


int Dox,doy;


int angx=30,angy=30;


cube data = new cube ();


Color [] col={color.gray,color.cyan,color.green,


Color.red,color.white,color.orange,


Color.magenta,color.pink};


/**


*<br> Method Description: Main method


*<br> input Parameters:


*<br> return type:


*/


public static void Main (string[] args) {


gr3d1m G3 = new gr3d1m ();


　}


/**


*<br> Method Description: Constructor


*<br> input Parameters:


*<br> return type:


*/


public gr3d1m () {


settitle ("3D cube Frame");


setdefaultcloseoperation (jframe.dispose_on_close);


Addmouselistener (this);


Addmousemotionlistener (this);


SetBackground (New Color (128,128,255));


setSize (350,350);


Show ();


　}


/**


*<br> Method Description: Mouse down event, get mouse position


*<br> input Parameters:


*<br> return type:


*/


public void mousepressed (MouseEvent e) {


Dox=e.getx ();


doy=e.gety ();


　}


/**


*<br> Method Description: Mouse Drag event, change the mouse position, repaint screen


*<br> input Parameters:


*<br> return type:


*/


public void mousedragged (MouseEvent e) {


angx=angx+e.gety ()-doy;


angy=angy+e.getx ()-dox;


Dox=e.getx (); Doy=e.gety ();


repaint ();


　}


/* Below is a way to implement MouseListener and Mousemotionlistener must be overloaded * * *


public void mousereleased (MouseEvent e) {}


public void mouseclicked (MouseEvent e) {}


public void mouseentered (MouseEvent e) {}


public void mouseexited (MouseEvent e) {}


public void mousemoved (MouseEvent e) {}


/**


*<br> Method Description: Drawing graphics


*<br> input Parameters:


*<br> return type:


*/


public void Paint (Graphics g) {


Deldeaw (g);


for (int i=0; i<data.x.length; i++) {


DRAWPG (g, data.x[i], data.y[i], data.z[i],


150,150,col[i]);


　　 }


G.setcolor (Color.yellow);


g.drawstring ("x=" +angx%360+ "y=" +angy%360,


10,getsize (). height-30);


　}


/**


*<br> Method Description: Wipe the screen, using the background color to cover the original graphics


*<br> input Parameters:


*<br> return type:


*/


public void Deldeaw (Graphics g) {


Insets Insets = Getinsets ();


int L0 = insets.left, T0 = insets.top;


G.setcolor (New Color (128,128,255));


G.fillrect (l0,t0,l0+350,t0+350);


　}


/**


*<br> Method Description: Draw the square body


*<br> input Parameters:


*<br> return type:


*/


public void DRAWPG (Graphics g,double []x,double []y,


double []z,int xp,int Yp,color Co) {


double x1,y1,z0;


int len=x.length;


int [] xx=new int [Len];


int [] yy=new int [Len];


final double rad=math.pi/180.0;


double A=angx*rad;


double B=angy*rad;


Double Sina=math.sin (a), Sinb=math.sin (b);


Double Cosa=math.cos (a), Cosb=math.cos (b);


for (int i=0; i<len; i++) {


x1= x[i]*cosb+z[i]*sinb;


Z0=-X[I]*SINB+Z[I]*COSB;


y1= Y[i]*cosa-z0*sina;


xx[i]=xp+ (int) math.rint (x1);


yy[i]=yp-(int) math.rint (y1);


　　 }


G.setcolor (CO);


G.drawpolygon (Xx,yy,len);//Draw Polygon


　}


}