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;
17 Matrix projection = null;
19 public Mesh tile = new Mesh(false);
20 public Mesh goal = new Mesh(false);
24 Point clickPoint = null;
25 Point clickClosest = null;
36 boolean shift = false;
37 boolean control = false;
39 public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { }
40 public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) { }
42 public void init(GLAutoDrawable gld) {
44 gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
45 gl.glViewport(0, 0, 500, 300);
46 gl.glEnable(GL.GL_DEPTH_TEST);
48 gl.glDepthFunc(GL.GL_LEQUAL);
49 gl.glMatrixMode(GL.GL_PROJECTION);
51 gl.glMatrixMode(GL.GL_MODELVIEW);
53 float mat_specular[] = { 0.5f, 0.5f, 0.5f, 0.5f };
54 float mat_shininess[] = { 50.0f };
55 gl.glShadeModel(GL.GL_SMOOTH);
56 //gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_specular, 0);
57 //gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, mat_specular, 0);
58 //gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, new float[] { 0.3f, 0.3f, 0.3f, 0.3f }, 0);
59 //gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, mat_shininess, 0);
60 gl.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, new float[] { 1.0f, 4.0f, -10.0f, 0.0f }, 0);
61 gl.glLightfv(GL.GL_LIGHT1, GL.GL_POSITION, new float[] { -10.0f, 10.0f, 10.0f, 0.0f }, 0);
62 gl.glLightfv(GL.GL_LIGHT2, GL.GL_POSITION, new float[] { 10.0f, -10.0f, 10.0f, 0.0f }, 0);
63 gl.glLightfv(GL.GL_LIGHT3, GL.GL_POSITION, new float[] { 10.0f, 10.0f, -10.0f, 0.0f }, 0);
64 gl.glLightfv(GL.GL_LIGHT4, GL.GL_POSITION, new float[] { -10.0f, 10.0f, -10.0f, 0.0f }, 0);
65 gl.glLightfv(GL.GL_LIGHT5, GL.GL_POSITION, new float[] { 10.0f, -10.0f, -10.0f, 0.0f }, 0);
66 gl.glEnable(GL.GL_LIGHTING);
67 gl.glEnable(GL.GL_LIGHT0);
69 gl.glColorMaterial(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT_AND_DIFFUSE);
70 gl.glEnable(GL.GL_COLOR_MATERIAL);
75 public abstract void _display(GLAutoDrawable drawable, GL gl);
76 public final void display(GLAutoDrawable drawable) {
77 GL gl = drawable.getGL();
78 _display(drawable, gl);
79 this.projection = Matrix.getProjectionMatrix(gl);
80 updateVisibility(gl, tile);
83 private void updateVisibility(GL gl, Mesh mesh) {
84 IntBuffer buf = ByteBuffer.allocateDirect(9*4*4).order(ByteOrder.nativeOrder()).asIntBuffer();
86 gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
87 double dist = Double.MAX_VALUE;
88 if (clickPoint==null) closest = null;
91 t.glTriangle(gl, null);
92 for(Mesh.Vertex v : mesh.vertices()) {
93 Point p = v.getPoint();
95 gl.glBegin(gl.GL_POINTS);
100 Point projected = projection.times(p);
101 int x = (int)projected.x;
102 int y = (int)projected.y;
103 gl.glReadPixels(x-1, y-1, 3, 3, gl.GL_RGB, gl.GL_UNSIGNED_BYTE, buf);
106 for(int j=0; j<9*4; j++) vis |= buf.get(j)!=0;
110 gl.glBegin(gl.GL_POINTS);
113 y = glcanvas.getHeight()-y;
114 if (clickPoint==null) {
115 if (closest==null || (x-mousex)*(x-mousex)+(y-mousey)*(y-mousey) < dist) {
116 dist = (x-mousex)*(x-mousex)+(y-mousey)*(y-mousey);
123 gl.glShadeModel(GL.GL_SMOOTH);
124 gl.glEnable(GL.GL_LIGHTING);
125 gl.glDrawBuffer(GL.GL_FRONT);
129 /** return the position of the mouse as a point in window-space */
130 public Point getMouse() {
131 return new Point(mousex, glcanvas.getHeight()-mousey, 0);
134 public void mouseWheelMoved(MouseWheelEvent e) {
135 tz -= e.getWheelRotation();
138 public void keyTyped(KeyEvent e) { }
139 public void keyPressed(KeyEvent e) {
140 switch(e.getKeyCode()) {
141 case KeyEvent.VK_CONTROL: control = true; break;
142 case KeyEvent.VK_ALT: alt = true; break;
143 case KeyEvent.VK_SHIFT: shift = true; break;
147 public void keyReleased(KeyEvent e) {
148 switch(e.getKeyCode()) {
149 case KeyEvent.VK_CONTROL: control = false; break;
150 case KeyEvent.VK_ALT: alt = false; break;
151 case KeyEvent.VK_SHIFT: shift = false; break;
155 public void mouseClicked(MouseEvent e) { }
156 public void mouseEntered(MouseEvent e) { }
157 public void mouseExited(MouseEvent e) { }
158 public void mousePressed(MouseEvent e) {
159 clickPoint = getMouse();
160 clickClosest = closest == null ? null : closest.getPoint();
163 public void mouseReleased(MouseEvent e) {
168 public void mouseMoved(MouseEvent e) {
173 public void mouseDragged(MouseEvent e) {
176 tx += (mousex - e.getX())/(float)20;
177 ty += (mousey - e.getY())/(float)20;
179 if (closest != null && projection != null && clickClosest != null) {
181 Vec d1 = projection.inverse().times(getMouse()).minus(projection.inverse().times(clickPoint));
182 Vec delta = d1.plus(clickClosest).minus(closest.getPoint());
183 //System.out.println(delta + " " + closest.getPoint());
184 System.out.println(getMouse().minus(clickPoint));
185 closest.move(Matrix.translate(delta), true);
189 anglex -= mousex - e.getX();
190 angley += mousey - e.getY();
196 public Viewer(JFrame f) {
198 glcanvas = new GLCanvas();
199 glcanvas.addGLEventListener(this);
200 f.add(glcanvas, BorderLayout.CENTER);
201 glcanvas.addMouseListener(this);
202 glcanvas.addMouseMotionListener(this);
203 glcanvas.addMouseWheelListener(this);
204 glcanvas.addKeyListener(this);
207 public void repaint() {