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/**
* @(#) DrawColoredPrimitives2.java
* @(#) author: Joe Zimmerman (converted to Java by Sven Goethel)
*/
/* This program is free software under the license of LGPL */
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.*;
import java.util.*;
import java.io.*;
import java.util.*;
import gl4java.GLContext;
import gl4java.awt.GLAnimCanvas;
import gl4java.applet.SimpleGLAnimApplet1;
public class DrawColoredPrimitives2 extends SimpleGLAnimApplet1
{
public void init()
{
super.init();
Dimension d = getSize();
canvas = new gldemo(d.width, d.height);
add("Center", canvas);
}
public static void main( String args[] ) {
DrawColoredPrimitives2 applet =
new DrawColoredPrimitives2();
Frame f = new Frame("DrawColoredPrimitives2");
f.addWindowListener( new WindowAdapter()
{
public void windowClosed(WindowEvent e)
{
System.exit(0);
}
public void windowClosing(WindowEvent e)
{
windowClosed(e);
}
}
);
f.setLayout(new BorderLayout());
f.add("Center", applet);
applet.setSize(500,300);
applet.init();
applet.start();
Dimension ps = applet.getPreferredSize();
f.setBounds(-100,-100,99,99);
f.setVisible(true);
f.setVisible(false);
Insets i = f.getInsets();
f.setBounds(0,0,
ps.width+i.left+i.right,
ps.height+i.top+i.bottom);
f.setVisible(true);
}
private class gldemo extends GLAnimCanvas
implements MouseListener, ActionListener
{
private PopupMenu menu = null;
private boolean menu_showing = false;
private boolean save_suspended = false;
private final String VIEW_FRONT = "View Front";
private final String VIEW_TOP = "View Top";
private final String VIEW_BOTTOM = "View Bottom";
final float M_PI = 3.14159265f;
final float M_PI_2 = 1.57079632f;
float rotate;
float rotationStep = 1;
int view = 0; /* 0 = front, 1 = top, 2 = bottom */
float LightAmbient[] = { 0.75f, 0.75f, 0.75f, 1.5f};
float LightDiffuse[] = { 1.0f, 1.0f, 1.0f, 0.9f};
float LightSpecular[] = { 0.8f, 0.8f, 0.8f, 1.0f};
public gldemo(int w, int h)
{
super(w, h);
GLContext.gljNativeDebug = false;
GLContext.gljClassDebug = false;
setAnimateFps(30.0);
}
public void preInit()
{
doubleBuffer = true;
stereoView = false;
}
public void init()
{
reshape(getSize().width, getSize().height);
gl.glEnable(GL_LIGHT0);
gl.glLightfv(GL_LIGHT0, GL_AMBIENT, LightAmbient);
gl.glLightfv(GL_LIGHT0, GL_DIFFUSE, LightDiffuse);
gl.glLightfv(GL_LIGHT0, GL_SPECULAR, LightSpecular);
glj.gljCheckGL();
menu = new PopupMenu("Options");
menu.add(VIEW_FRONT);
menu.add(VIEW_TOP);
menu.add(VIEW_BOTTOM);
menu.addActionListener(this);
add(menu);
addMouseListener(this);
}
public void doCleanup()
{
removeMouseListener(this);
menu.removeActionListener(this);
}
public void reshape(int width, int height)
{
gl.glMatrixMode(GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(45, (float)width/(float)height, 1, 700);
gl.glMatrixMode(GL_MODELVIEW);
gl.glLoadIdentity();
gl.glViewport(0,0,width,height);
}
public void display()
{
if (glj.gljMakeCurrent() == false) return;
gl.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
gl.glMatrixMode(GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0, 0, -5);
if(view==1)
{
gl.glRotatef(90f, 1, 0, 0);
} else if(view==2)
{
gl.glRotatef(-90f, 1, 0, 0);
}
gl.glColor4f(1, 1, 1, 1);
rotate+=rotationStep;
if(rotate>=180.0f || rotate<=0.0f)
rotationStep*=-1.0f;
gl.glRotatef(rotate, 0, 1, 0);
gl.glBegin(GL_POLYGON);
gl.glNormal3f( 1, 0, 0);
// top vertex
gl.glColor4f(1, 0, 0, 1); gl.glVertex3f( 0, 1, 0);
// bottom left vertex
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f(-1, -1, 1);
// bottom right vertex
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f( 1, -1, 1);
gl.glEnd();
gl.glBegin(GL_POLYGON);
gl.glNormal3f( 1, 0, 0);
// top vertex
gl.glColor4f(1, 0, 0, 1); gl.glVertex3f( 0, 1, 0);
// bottom left vertex
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f( 1, -1, -1);
// bottom right vertex
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f( 1, -1, 1);
gl.glEnd();
gl.glBegin(GL_POLYGON);
gl.glNormal3f( 1, 0, 0);
// top vertex
gl.glColor4f(1, 0, 0, 1); gl.glVertex3f( 0, 1, 0);
// bottom left vertex
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f( 1, -1, -1);
// bottom right vertex
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f(-1, -1, -1);
gl.glEnd();
gl.glBegin(GL_POLYGON);
gl.glNormal3f( 1, 0, 0);
// top vertex
gl.glColor4f(1, 0, 0, 1); gl.glVertex3f( 0, 1, 0);
// bottom left vertex
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f(-1, -1, 1);
// bottom right vertex
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f(-1, -1, -1);
gl.glEnd();
// bottom square polygon
gl.glBegin(GL_POLYGON);
gl.glNormal3f( 1, 0, 0);
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f( 1, -1, 1);
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f(-1, -1, 1);
gl.glColor4f(0, 0, 1, 1); gl.glVertex3f(-1, -1, -1);
gl.glColor4f(0, 1, 0, 1); gl.glVertex3f( 1, -1, -1);
gl.glEnd();
glj.gljSwap();
glj.gljCheckGL();
glj.gljFree();
}
// Methods required for the implementation of MouseListener
public void mouseEntered(MouseEvent evt)
{
}
public void mouseExited(MouseEvent evt)
{
}
public void mousePressed(MouseEvent evt)
{
if (!menu_showing)
{
if ((evt.getModifiers() & evt.BUTTON3_MASK) != 0)
{
menu_showing = true;
save_suspended = isSuspended();
if (!save_suspended)
{
setSuspended(true);
repaint(100);
try
{
Thread.currentThread().sleep(200);
}
catch (Exception e)
{ }
}
menu.show(this,evt.getX(),evt.getY());
}
else
{
// Must be left button.
if (isSuspended()) repaint();
}
}
else
{
menu_showing = false;
setSuspended(save_suspended);
}
}
public void mouseReleased(MouseEvent evt)
{
}
public void mouseClicked(MouseEvent evt)
{
}
// Method required for the implementation of ActionListener
public void actionPerformed(ActionEvent evt)
{
String c = evt.getActionCommand();
if (c.equals(VIEW_FRONT))
{
view=0;
}
else if (c.equals(VIEW_TOP))
{
view=1;
}
else if (c.equals(VIEW_BOTTOM))
{
view=2;
}
if (menu_showing)
{
menu_showing = false;
setSuspended(save_suspended);
}
}
}
}
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