1 package edu.berkeley.qfat;
5 import java.awt.event.*;
7 import javax.media.opengl.*;
8 import javax.media.opengl.glu.*;
9 import com.sun.opengl.util.*;
11 import edu.berkeley.qfat.geom.*;
12 import edu.berkeley.qfat.geom.Point;
14 public abstract class Viewer implements GLEventListener, MouseListener, MouseMotionListener, KeyListener, MouseWheelListener {
16 Mesh.Vertex closest = null;
18 public Mesh tile = new Mesh(false);
19 public Mesh goal = new Mesh(false);
21 private Matrix projection = null;
25 Point clickPoint = null;
26 Point clickClosest = null;
37 boolean shift = false;
38 boolean control = false;
40 public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { }
41 public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) { }
43 public void init(GLAutoDrawable gld) {
45 gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
46 gl.glViewport(0, 0, 500, 300);
47 gl.glEnable(GL.GL_DEPTH_TEST);
49 gl.glDepthFunc(GL.GL_LEQUAL);
50 gl.glMatrixMode(GL.GL_PROJECTION);
52 gl.glMatrixMode(GL.GL_MODELVIEW);
54 float mat_specular[] = { 0.5f, 0.5f, 0.5f, 0.5f };
55 float mat_shininess[] = { 50.0f };
56 gl.glShadeModel(GL.GL_SMOOTH);
57 //gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_specular, 0);
58 //gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, mat_specular, 0);
59 //gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, new float[] { 0.3f, 0.3f, 0.3f, 0.3f }, 0);
60 //gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, mat_shininess, 0);
61 gl.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, new float[] { 1.0f, 4.0f, -10.0f, 0.0f }, 0);
62 gl.glLightfv(GL.GL_LIGHT1, GL.GL_POSITION, new float[] { -10.0f, 10.0f, 10.0f, 0.0f }, 0);
63 gl.glLightfv(GL.GL_LIGHT2, GL.GL_POSITION, new float[] { 10.0f, -10.0f, 10.0f, 0.0f }, 0);
64 gl.glLightfv(GL.GL_LIGHT3, GL.GL_POSITION, new float[] { 10.0f, 10.0f, -10.0f, 0.0f }, 0);
65 gl.glLightfv(GL.GL_LIGHT4, GL.GL_POSITION, new float[] { -10.0f, 10.0f, -10.0f, 0.0f }, 0);
66 gl.glLightfv(GL.GL_LIGHT5, GL.GL_POSITION, new float[] { 10.0f, -10.0f, -10.0f, 0.0f }, 0);
67 gl.glEnable(GL.GL_LIGHTING);
68 gl.glEnable(GL.GL_LIGHT0);
70 gl.glColorMaterial(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT_AND_DIFFUSE);
71 gl.glEnable(GL.GL_COLOR_MATERIAL);
76 public abstract void _display(GLAutoDrawable drawable, GL gl);
77 public final void display(GLAutoDrawable drawable) {
78 GL gl = drawable.getGL();
79 _display(drawable, gl);
80 projection = Matrix.getProjectionMatrix(gl);
83 protected synchronized void updateVisibility(GL gl, Mesh mesh) {
84 Matrix projection = Matrix.getProjectionMatrix(gl);
85 IntBuffer buf = ByteBuffer.allocateDirect(9*4*4).order(ByteOrder.nativeOrder()).asIntBuffer();
87 gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
88 for(Mesh.T t : mesh) t.glTriangle(gl, null);
89 for(Mesh.Vertex v : mesh.vertices()) {
90 Point p = v.getPoint();
92 gl.glBegin(gl.GL_POINTS);
97 Point projected = projection.times(p);
98 gl.glReadPixels((int)projected.x-1, (int)projected.y-1, 3, 3, gl.GL_RGB, gl.GL_UNSIGNED_BYTE, buf);
101 for(int j=0; j<9*4; j++) vis |= buf.get(j)!=0;
105 gl.glBegin(gl.GL_POINTS);
110 gl.glShadeModel(GL.GL_SMOOTH);
111 gl.glEnable(GL.GL_LIGHTING);
112 gl.glDrawBuffer(GL.GL_FRONT);
116 /** return the position of the mouse as a point in window-space */
117 public Point getMouse() {
118 return new Point(mousex, glcanvas.getHeight()-mousey, 0);
121 public void mouseWheelMoved(MouseWheelEvent e) {
122 tz -= e.getWheelRotation();
125 public void keyTyped(KeyEvent e) { }
126 public void keyPressed(KeyEvent e) {
127 switch(e.getKeyCode()) {
128 case KeyEvent.VK_CONTROL: control = true; break;
129 case KeyEvent.VK_ALT: alt = true; break;
130 case KeyEvent.VK_SHIFT: shift = true; break;
134 public void keyReleased(KeyEvent e) {
135 switch(e.getKeyCode()) {
136 case KeyEvent.VK_CONTROL: control = false; break;
137 case KeyEvent.VK_ALT: alt = false; break;
138 case KeyEvent.VK_SHIFT: shift = false; break;
142 public void mouseClicked(MouseEvent e) { }
143 public void mouseEntered(MouseEvent e) { }
144 public void mouseExited(MouseEvent e) { }
145 public void mousePressed(MouseEvent e) {
146 clickPoint = getMouse();
147 clickClosest = closest == null ? null : closest.getPoint();
150 public void mouseReleased(MouseEvent e) {
155 public void mouseMoved(MouseEvent e) {
160 public void mouseDragged(MouseEvent e) {
163 tx += (mousex - e.getX())/(float)20;
164 ty += (mousey - e.getY())/(float)20;
166 if (closest != null && projection != null && clickClosest != null) {
168 Vec d1 = projection.inverse().times(getMouse()).minus(projection.inverse().times(clickPoint));
169 Vec delta = d1.plus(clickClosest).minus(closest.getPoint());
170 //System.out.println(delta + " " + closest.getPoint());
171 System.out.println(getMouse().minus(clickPoint));
172 closest.move(Matrix.translate(delta), false);
176 anglex -= mousex - e.getX();
177 angley += mousey - e.getY();
183 public Viewer(JFrame f) {
185 glcanvas = new GLCanvas();
186 glcanvas.addGLEventListener(this);
187 f.add(glcanvas, BorderLayout.CENTER);
188 glcanvas.addMouseListener(this);
189 glcanvas.addMouseMotionListener(this);
190 glcanvas.addMouseWheelListener(this);
191 glcanvas.addKeyListener(this);
194 public void repaint() {