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jsketcher/src/cad/Gears.java
Val Erastov df53c08794 init
2014-08-11 20:20:49 -07:00

337 lines
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Java
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package cad;
import com.jogamp.opengl.util.Animator;
import javax.media.opengl.GL2;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.awt.AWTGLAutoDrawable;
import javax.media.opengl.awt.GLCanvas;
import javax.media.opengl.awt.GLJPanel;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
/**
* Gears.java <BR>
* author: Brian Paul (converted to Java by Ron Cemer and Sven Goethel) <P>
*
* This version is equal to Brian Paul's version 1.2 1999/10/21
*/
public class Gears implements GLEventListener, MouseListener, MouseMotionListener {
public static void main(String[] args) {
Frame frame = new Frame("Gear Demo");
GLCanvas canvas = new GLCanvas();
final Gears gears = new Gears();
canvas.addGLEventListener(gears);
frame.add(canvas);
frame.setSize(300, 300);
final Animator animator = new Animator(canvas);
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
// Run this on another thread than the AWT event queue to
// make sure the call to Animator.stop() completes before
// exiting
new Thread(new Runnable() {
public void run() {
animator.stop();
System.exit(0);
}
}).start();
}
});
frame.setVisible(true);
animator.start();
}
private float view_rotx = 20.0f, view_roty = 30.0f, view_rotz = 0.0f;
private int gear1, gear2, gear3;
private float angle = 0.0f;
private int prevMouseX, prevMouseY;
private boolean mouseRButtonDown = false;
public void init(GLAutoDrawable drawable) {
// Use debug pipeline
// drawable.setGL(new DebugGL(drawable.getGL()));
GL2 gl = drawable.getGL().getGL2();
System.err.println("INIT GL IS: " + gl.getClass().getName());
System.err.println("Chosen GLCapabilities: " + drawable.getChosenGLCapabilities());
gl.setSwapInterval(1);
float pos[] = { 5.0f, 5.0f, 10.0f, 0.0f };
float red[] = { 0.8f, 0.1f, 0.0f, 1.0f };
float green[] = { 0.0f, 0.8f, 0.2f, 1.0f };
float blue[] = { 0.2f, 0.2f, 1.0f, 1.0f };
gl.glLightfv(GL2.GL_LIGHT0, GL2.GL_POSITION, pos, 0);
gl.glEnable(GL2.GL_CULL_FACE);
gl.glEnable(GL2.GL_LIGHTING);
gl.glEnable(GL2.GL_LIGHT0);
gl.glEnable(GL2.GL_DEPTH_TEST);
/* make the gears */
gear1 = gl.glGenLists(1);
gl.glNewList(gear1, GL2.GL_COMPILE);
gl.glMaterialfv(GL2.GL_FRONT, GL2.GL_AMBIENT_AND_DIFFUSE, red, 0);
gear(gl, 1.0f, 4.0f, 1.0f, 20, 0.7f);
gl.glEndList();
gear2 = gl.glGenLists(1);
gl.glNewList(gear2, GL2.GL_COMPILE);
gl.glMaterialfv(GL2.GL_FRONT, GL2.GL_AMBIENT_AND_DIFFUSE, green, 0);
gear(gl, 0.5f, 2.0f, 2.0f, 10, 0.7f);
gl.glEndList();
gear3 = gl.glGenLists(1);
gl.glNewList(gear3, GL2.GL_COMPILE);
gl.glMaterialfv(GL2.GL_FRONT, GL2.GL_AMBIENT_AND_DIFFUSE, blue, 0);
gear(gl, 1.3f, 2.0f, 0.5f, 10, 0.7f);
gl.glEndList();
gl.glEnable(GL2.GL_NORMALIZE);
if (drawable instanceof AWTGLAutoDrawable) {
AWTGLAutoDrawable awtDrawable = (AWTGLAutoDrawable) drawable;
awtDrawable.addMouseListener(this);
awtDrawable.addMouseMotionListener(this);
}
}
public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
GL2 gl = drawable.getGL().getGL2();
float h = (float)height / (float)width;
gl.glMatrixMode(GL2.GL_PROJECTION);
System.err.println("GL_VENDOR: " + gl.glGetString(GL2.GL_VENDOR));
System.err.println("GL_RENDERER: " + gl.glGetString(GL2.GL_RENDERER));
System.err.println("GL_VERSION: " + gl.glGetString(GL2.GL_VERSION));
gl.glLoadIdentity();
gl.glFrustum(-1.0f, 1.0f, -h, h, 5.0f, 60.0f);
gl.glMatrixMode(GL2.GL_MODELVIEW);
gl.glLoadIdentity();
gl.glTranslatef(0.0f, 0.0f, -40.0f);
}
public void dispose(GLAutoDrawable drawable) {
System.out.println("Gears.dispose: "+drawable);
}
public void display(GLAutoDrawable drawable) {
// Turn the gears' teeth
angle += 2.0f;
// Get the GL corresponding to the drawable we are animating
GL2 gl = drawable.getGL().getGL2();
// Special handling for the case where the GLJPanel is translucent
// and wants to be composited with other Java 2D content
if ((drawable instanceof GLJPanel) &&
!((GLJPanel) drawable).isOpaque() &&
((GLJPanel) drawable).shouldPreserveColorBufferIfTranslucent()) {
gl.glClear(GL2.GL_DEPTH_BUFFER_BIT);
} else {
gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT);
}
// Rotate the entire assembly of gears based on how the user
// dragged the mouse around
gl.glPushMatrix();
gl.glRotatef(view_rotx, 1.0f, 0.0f, 0.0f);
gl.glRotatef(view_roty, 0.0f, 1.0f, 0.0f);
gl.glRotatef(view_rotz, 0.0f, 0.0f, 1.0f);
// Place the first gear and call its display list
gl.glPushMatrix();
gl.glTranslatef(-3.0f, -2.0f, 0.0f);
gl.glRotatef(angle, 0.0f, 0.0f, 1.0f);
gl.glCallList(gear1);
gl.glPopMatrix();
// Place the second gear and call its display list
gl.glPushMatrix();
gl.glTranslatef(3.1f, -2.0f, 0.0f);
gl.glRotatef(-2.0f * angle - 9.0f, 0.0f, 0.0f, 1.0f);
gl.glCallList(gear2);
gl.glPopMatrix();
// Place the third gear and call its display list
gl.glPushMatrix();
gl.glTranslatef(-3.1f, 4.2f, 0.0f);
gl.glRotatef(-2.0f * angle - 25.0f, 0.0f, 0.0f, 1.0f);
gl.glCallList(gear3);
gl.glPopMatrix();
// Remember that every push needs a pop; this one is paired with
// rotating the entire gear assembly
gl.glPopMatrix();
}
public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {}
public static void gear(GL2 gl,
float inner_radius,
float outer_radius,
float width,
int teeth,
float tooth_depth)
{
int i;
float r0, r1, r2;
float angle, da;
float u, v, len;
r0 = inner_radius;
r1 = outer_radius - tooth_depth / 2.0f;
r2 = outer_radius + tooth_depth / 2.0f;
da = 2.0f * (float) Math.PI / teeth / 4.0f;
gl.glShadeModel(GL2.GL_FLAT);
gl.glNormal3f(0.0f, 0.0f, 1.0f);
/* draw front face */
gl.glBegin(GL2.GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), width * 0.5f);
if(i < teeth)
{
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle + 3.0f * da), r1 * (float)Math.sin(angle + 3.0f * da), width * 0.5f);
}
}
gl.glEnd();
/* draw front sides of teeth */
gl.glBegin(GL2.GL_QUADS);
for (i = 0; i < teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + 2.0f * da), r2 * (float)Math.sin(angle + 2.0f * da), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle + 3.0f * da), r1 * (float)Math.sin(angle + 3.0f * da), width * 0.5f);
}
gl.glEnd();
/* draw back face */
gl.glBegin(GL2.GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), -width * 0.5f);
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), -width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), -width * 0.5f);
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), -width * 0.5f);
}
gl.glEnd();
/* draw back sides of teeth */
gl.glBegin(GL2.GL_QUADS);
for (i = 0; i < teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), -width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + 2 * da), r2 * (float)Math.sin(angle + 2 * da), -width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), -width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), -width * 0.5f);
}
gl.glEnd();
/* draw outward faces of teeth */
gl.glBegin(GL2.GL_QUAD_STRIP);
for (i = 0; i < teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle), r1 * (float)Math.sin(angle), -width * 0.5f);
u = r2 * (float)Math.cos(angle + da) - r1 * (float)Math.cos(angle);
v = r2 * (float)Math.sin(angle + da) - r1 * (float)Math.sin(angle);
len = (float)Math.sqrt(u * u + v * v);
u /= len;
v /= len;
gl.glNormal3f(v, -u, 0.0f);
gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + da), r2 * (float)Math.sin(angle + da), -width * 0.5f);
gl.glNormal3f((float)Math.cos(angle), (float)Math.sin(angle), 0.0f);
gl.glVertex3f(r2 * (float)Math.cos(angle + 2 * da), r2 * (float)Math.sin(angle + 2 * da), width * 0.5f);
gl.glVertex3f(r2 * (float)Math.cos(angle + 2 * da), r2 * (float)Math.sin(angle + 2 * da), -width * 0.5f);
u = r1 * (float)Math.cos(angle + 3 * da) - r2 * (float)Math.cos(angle + 2 * da);
v = r1 * (float)Math.sin(angle + 3 * da) - r2 * (float)Math.sin(angle + 2 * da);
gl.glNormal3f(v, -u, 0.0f);
gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(angle + 3 * da), r1 * (float)Math.sin(angle + 3 * da), -width * 0.5f);
gl.glNormal3f((float)Math.cos(angle), (float)Math.sin(angle), 0.0f);
}
gl.glVertex3f(r1 * (float)Math.cos(0), r1 * (float)Math.sin(0), width * 0.5f);
gl.glVertex3f(r1 * (float)Math.cos(0), r1 * (float)Math.sin(0), -width * 0.5f);
gl.glEnd();
gl.glShadeModel(GL2.GL_SMOOTH);
/* draw inside radius cylinder */
gl.glBegin(GL2.GL_QUAD_STRIP);
for (i = 0; i <= teeth; i++)
{
angle = i * 2.0f * (float) Math.PI / teeth;
gl.glNormal3f(-(float)Math.cos(angle), -(float)Math.sin(angle), 0.0f);
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), -width * 0.5f);
gl.glVertex3f(r0 * (float)Math.cos(angle), r0 * (float)Math.sin(angle), width * 0.5f);
}
gl.glEnd();
}
// Methods required for the implementation of MouseListener
public void mouseEntered(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mousePressed(MouseEvent e) {
prevMouseX = e.getX();
prevMouseY = e.getY();
if ((e.getModifiers() & e.BUTTON3_MASK) != 0) {
mouseRButtonDown = true;
}
}
public void mouseReleased(MouseEvent e) {
if ((e.getModifiers() & e.BUTTON3_MASK) != 0) {
mouseRButtonDown = false;
}
}
public void mouseClicked(MouseEvent e) {}
// Methods required for the implementation of MouseMotionListener
public void mouseDragged(MouseEvent e) {
int x = e.getX();
int y = e.getY();
Dimension size = e.getComponent().getSize();
float thetaY = 360.0f * ( (float)(x-prevMouseX)/(float)size.width);
float thetaX = 360.0f * ( (float)(prevMouseY-y)/(float)size.height);
prevMouseX = x;
prevMouseY = y;
view_rotx += thetaX;
view_roty += thetaY;
}
public void mouseMoved(MouseEvent e) {}
}
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