-package edu.berkeley.qfat;
-import java.io.*;
-import java.nio.*;
-import java.awt.*;
-import java.awt.event.*;
-import javax.swing.*;
-import javax.media.opengl.*;
-import javax.media.opengl.glu.*;
-import com.sun.opengl.util.*;
-import java.util.*;
-import edu.berkeley.qfat.geom.*;
-import edu.berkeley.qfat.geom.Point;
-
-public abstract class Viewer implements GLEventListener, MouseListener, MouseMotionListener, KeyListener, MouseWheelListener {
-
- Mesh.Vertex closest = null;
-
- public Mesh tile = new Mesh(false);
- public Mesh goal = new Mesh(false);
-
- private int mousex;
- private int mousey;
- private Matrix projection = null;
-
- JFrame f;
- GLCanvas glcanvas;
-
- private Point clickPoint = null;
- Point clickClosest = null;
-
- float tz = 0;
- float anglex = 0;
- float angley = 0;
-
- boolean alt = false;
- boolean shift = false;
- boolean control = false;
-
- public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) { }
- public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) { }
-
- public void init(GLAutoDrawable gld) {
- GL gl = gld.getGL();
- gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
- gl.glViewport(0, 0, 500, 300);
- gl.glEnable(GL.GL_DEPTH_TEST);
- gl.glClearDepth(1.0);
- gl.glDepthFunc(GL.GL_LEQUAL);
- gl.glMatrixMode(GL.GL_PROJECTION);
- gl.glLoadIdentity();
- gl.glMatrixMode(GL.GL_MODELVIEW);
-
- float mat_specular[] = { 0.5f, 0.5f, 0.5f, 0.5f };
- float mat_shininess[] = { 50.0f };
- gl.glShadeModel(GL.GL_SMOOTH);
- //gl.glMaterialfv(GL.GL_FRONT, GL.GL_DIFFUSE, mat_specular, 0);
- //gl.glMaterialfv(GL.GL_FRONT, GL.GL_SPECULAR, mat_specular, 0);
- //gl.glMaterialfv(GL.GL_FRONT, GL.GL_AMBIENT, new float[] { 0.3f, 0.3f, 0.3f, 0.3f }, 0);
- //gl.glMaterialfv(GL.GL_FRONT, GL.GL_SHININESS, mat_shininess, 0);
- gl.glLightfv(GL.GL_LIGHT0, GL.GL_POSITION, new float[] { 1.0f, 4.0f, -10.0f, 0.0f }, 0);
- gl.glLightfv(GL.GL_LIGHT1, GL.GL_POSITION, new float[] { -10.0f, 10.0f, 10.0f, 0.0f }, 0);
- gl.glLightfv(GL.GL_LIGHT2, GL.GL_POSITION, new float[] { 10.0f, -10.0f, 10.0f, 0.0f }, 0);
- gl.glLightfv(GL.GL_LIGHT3, GL.GL_POSITION, new float[] { 10.0f, 10.0f, -10.0f, 0.0f }, 0);
- gl.glLightfv(GL.GL_LIGHT4, GL.GL_POSITION, new float[] { -10.0f, 10.0f, -10.0f, 0.0f }, 0);
- gl.glLightfv(GL.GL_LIGHT5, GL.GL_POSITION, new float[] { 10.0f, -10.0f, -10.0f, 0.0f }, 0);
- gl.glEnable(GL.GL_LIGHTING);
- gl.glEnable(GL.GL_LIGHT0);
-
- gl.glColorMaterial(GL.GL_FRONT_AND_BACK, GL.GL_AMBIENT_AND_DIFFUSE);
- gl.glEnable(GL.GL_COLOR_MATERIAL);
-
- display(gld);
- }
-
- public abstract void _display(GLAutoDrawable drawable, GL gl);
- public final void display(GLAutoDrawable drawable) {
- GL gl = drawable.getGL();
- _display(drawable, gl);
- projection = Matrix.getProjectionMatrix(gl);
- }
-
- protected synchronized void updateVisibility(GL gl, Mesh mesh) {
- Matrix projection = Matrix.getProjectionMatrix(gl);
- IntBuffer buf = ByteBuffer.allocateDirect(9*4*4).order(ByteOrder.nativeOrder()).asIntBuffer();
- gl.glFlush();
- gl.glDrawBuffer(GL.GL_BACK);
- gl.glReadBuffer( GL.GL_BACK );
- gl.glPixelStorei( GL.GL_PACK_ALIGNMENT, 1);
- gl.glFlush();
- gl.glDisable(GL.GL_LIGHTING);
- gl.glShadeModel(GL.GL_FLAT);
- gl.glColor3f(0,0,0);
- gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
- for(Mesh.T t : mesh) t.glTriangle(gl, null);
- for(Mesh.Vertex v : mesh.vertices()) {
- Point p = v.getPoint();
- gl.glColor3f(1,1,1);
- gl.glBegin(gl.GL_POINTS);
- p.glVertex(gl);
- gl.glEnd();
- gl.glFlush();
-
- Point projected = projection.times(p);
- gl.glReadPixels((int)projected.x-1, (int)projected.y-1, 3, 3, gl.GL_RGB, gl.GL_UNSIGNED_BYTE, buf);
-
- boolean vis = false;
- for(int j=0; j<9*4; j++) vis |= buf.get(j)!=0;
- v.visible = vis;
- if (vis) {
- gl.glColor3f(0,0,0);
- gl.glBegin(gl.GL_POINTS);
- p.glVertex(gl);
- gl.glEnd();
- }
- }
- gl.glShadeModel(GL.GL_SMOOTH);
- gl.glEnable(GL.GL_LIGHTING);
- gl.glDrawBuffer(GL.GL_FRONT);
- }
-
- /** return the position of the mouse as a point in window-space */
- public Point getMouse() {
- return new Point(mousex, glcanvas.getHeight()-mousey, 0);
- }
-
- /** return the position where the mouse button was pressed, or null if it is not currently pressed */
- public Point getMouseClick() {
- return clickPoint;
- }
-
- public void mouseWheelMoved(MouseWheelEvent e) {
- tz -= e.getWheelRotation();
- }
-
- public void keyTyped(KeyEvent e) { }
- public void keyPressed(KeyEvent e) {
- switch(e.getKeyCode()) {
- case KeyEvent.VK_CONTROL: control = true; break;
- case KeyEvent.VK_ALT: alt = true; break;
- case KeyEvent.VK_SHIFT: shift = true; break;
- }
- }
-
- public void keyReleased(KeyEvent e) {
- switch(e.getKeyCode()) {
- case KeyEvent.VK_CONTROL: control = false; break;
- case KeyEvent.VK_ALT: alt = false; break;
- case KeyEvent.VK_SHIFT: shift = false; break;
- }
- }
-
- public void mouseClicked(MouseEvent e) { }
- public void mouseEntered(MouseEvent e) { }
- public void mouseExited(MouseEvent e) { }
- public void mousePressed(MouseEvent e) {
- clickPoint = getMouse();
- clickClosest = closest == null ? null : closest.getPoint();
- }
-
- public void mouseReleased(MouseEvent e) {
- clickPoint = null;
- clickClosest = null;
- }
-
- public void mouseMoved(MouseEvent e) {
- mousex = e.getX();
- mousey = e.getY();
- }
-
- public void mouseDragged(MouseEvent e) {
- if (shift) {
- if (closest != null && projection != null && clickClosest != null) {
- synchronized(this) {
- Vec d1 = projection.inverse().times(getMouse()).minus(projection.inverse().times(clickPoint));
- Vec delta = d1.plus(clickClosest).minus(closest.getPoint());
- closest.move(delta, false);
- }
- }
- } else {
- anglex -= mousex - e.getX();
- angley += mousey - e.getY();
- }
- mousex = e.getX();
- mousey = e.getY();
- }
-
- public Viewer(JFrame f) {
- this.f = f;
- glcanvas = new GLCanvas();
- glcanvas.addGLEventListener(this);
- f.add(glcanvas, BorderLayout.CENTER);
- glcanvas.addMouseListener(this);
- glcanvas.addMouseMotionListener(this);
- glcanvas.addMouseWheelListener(this);
- glcanvas.addKeyListener(this);
- }
-
- public void repaint() {
- glcanvas.repaint();
- }
-}
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