Canvas.java

Go to the documentation of this file.

package edu.tum.cs.vis;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.Insets;
import java.awt.Label;
import java.awt.SystemColor;
import java.awt.event.MouseAdapter;
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;
import java.util.Vector;
import javax.vecmath.Matrix4f;

import edu.tum.cs.util.math.Vector3f;

import processing.core.PApplet;
import processing.core.PFont;


public class Canvas extends PApplet implements MouseListener, MouseMotionListener {
        static final long serialVersionUID = 0;

        protected int width = 800, height = 600; 
        
        protected boolean useCamera;

        protected float leftMouseX = -1.0f, leftMouseY = -1.0f, rightMouseX = -1.0f, rightMouseY = -1.0f, centerMouseY = -1.0f;
        
        protected float xRotDisplay, yRotDisplay, xShiftDisplay, yShiftDisplay, zShiftDisplay, zoomDisplay;
        
        protected Vector3f eye, eyeTarget, eyeUp;
        
        protected float sceneSize = 4000;
        
        public boolean debugCamera;

        Vector<Drawable> items = new Vector<Drawable>();
        Vector<Drawable> items2D = new Vector<Drawable>();

        public void setWidth(int width) {
                this.width = width;
        }
        
        public void setHeight(int height) {
                this.height = height;
        }
        
        public int getHeight() {
                return height;
        }
        
        public int getWidth() {
                return width;
        }
        
        public void setSceneSize(float size) {
                this.sceneSize = size;
                this.zoomDisplay = 400 / sceneSize;
        }
        
        public Canvas() {
                useCamera = false;
                debugCamera = false;
                eye = new Vector3f(50.0f,50f,20f);
                eyeUp = new Vector3f(0,0,500);
                eyeTarget = new Vector3f(0,0,0);
                setStandardViewParams();
        }

        public void setStandardViewParams() {
                xRotDisplay = -106.25027f;
                yRotDisplay = 0.020062504f;
                xShiftDisplay = 103f;
                zShiftDisplay = 162f;
                setSceneSize(this.sceneSize);
        }
        
        public void setEyeTarget(Vector3f v) {
                this.eyeTarget.set(v);
        }
        
        public void setup() {
                size(width, height, P3D);
                lights();

                PFont font = createFont("Verdana", 12);
                textFont(font);

                ellipseMode(RADIUS);
                frameRate(20);

                noLoop();
                draw();
        }

        public void draw() {

                background(60, 60, 60);
                cursor(CROSS);
                
                if(!useCamera) {
                        camera();
                        
                        pushMatrix();
                        translate(width / 4.0f, height / 1.5f, -400.0f);
        
                        lights();
                        
                        rotateZ(PI / 2);
                        rotateY(-PI / 2);
                        translate(0.0f, zShiftDisplay, xShiftDisplay);
        
                        rotateZ(radians(xRotDisplay));
                        rotateX(radians(yRotDisplay));
                        
                        scale(zoomDisplay);
                        
                        //System.out.println("zoom: " + zoomDisplay + " zShift: " + zShiftDisplay + " xShift: " + xShiftDisplay + " xRot: " + xRotDisplay + " yRot: " + yRotDisplay);
                }
                else {
                        lights();
                        //beginCamera();
                        setCamera();                    
                }

                preDrawItems();
                
                drawItems();

                // draw camera vectors
                if(debugCamera) {
                        float coordlength = sceneSize / 8;
                        Vector3f up = new Vector3f(eyeUp);
                        up.scale(coordlength);
                        up.add(eyeTarget);
                        this.drawLine(eyeTarget, up, 0xff0000ff);
                        Vector3f dir = new Vector3f(eyeTarget);
                        dir.subtract(eye);
                        Vector3f third = new Vector3f();
                        third.cross(dir, up);
                        third.normalize();
                        third.scale(coordlength);
                        third.add(eyeTarget);
                        this.drawLine(eyeTarget, third, 0xff00ff00);
                        this.drawLine(eye, eyeTarget, 0xffff0000);
                }
                        
                if(!useCamera)
                        popMatrix();
                else {
                        //endCamera();
                }
                
                for(Drawable d : items2D)
                        d.draw(this);
        }
        
        protected void preDrawItems() {
                
        }
        
        protected void setCamera() {
                //beginCamera();
                camera(eye.x, eye.y, eye.z, eyeTarget.x, eyeTarget.y, eyeTarget.z, eyeUp.x, eyeUp.y, eyeUp.z);
                //camera(eye.x, eye.y, eye.z, eyeTarget.x, eyeTarget.y, eyeTarget.z, eye.x+eyeUp.x, eye.y+eyeUp.y, eye.z+eyeUp.z);
                //endCamera();
                
                //System.out.println("eye: " + eye + " -> " + eyeTarget + "  up: " + eyeUp);
        }
        
        public synchronized void drawItems() {
                for(Drawable d : items)
                        d.draw(this);           
        }
        
        public void drawLine(Vector3f p1, Vector3f p2, int color) {
                //pushMatrix();
                drawLine(p1.x, p1.y, p1.z, p2.x, p2.y, p2.z, color);
                //popMatrix();
        }
        
        public void drawLine(float x1, float y1, float z1, float x2, float y2, float z2, int color) {
                stroke(color);
                line(x1,y1,z1,x2,y2,z2);
        }
        
        public synchronized void add(Drawable d) {
                this.items.add(d);
        }
        
        public synchronized void add2D(Drawable d) {
                this.items2D.add(d);
        }

        public void rotateAxis(double theta, Vector3f rotAxis){
                Matrix4f mat = Vector3f.getRotationMatrix(theta,rotAxis);
                applyMatrix(mat.m00, mat.m01, mat.m02, mat.m03,
                                        mat.m10, mat.m11, mat.m12, mat.m13,
                                        mat.m20, mat.m21, mat.m22, mat.m23,
                                        mat.m30, mat.m31, mat.m32, mat.m33);
        }

        // 
        // EVENT HANDLERS
        // 
        
        @Override
        public void keyPressed() {
                switch(keyCode) {
                case java.awt.event.KeyEvent.VK_C:
                        useCamera = !useCamera;
                        //setStandardViewParams();
                        redraw();
                        System.out.println("Turned camera " + (useCamera ? "on" : "off"));
                        break;
                }
//              switch(key) {
//              case '+':
//                      zoom(-2);
//                      redraw();
//                      break;
//              case '-':
//                      zoom(2);
//                      redraw();
//                      break;
//              }               
        }
//
//      public void mousePressed(MouseEvent e) {
//
//              // general: save mouse positions for calculating rotation and translation
//              if (e.getButton() == MouseEvent.BUTTON1) {
//                      leftMouseX = e.getX();
//                      leftMouseY = e.getY();
//              }
//              else if (e.getButton() == MouseEvent.BUTTON3) {
//                      rightMouseX = e.getX();
//                      rightMouseY = e.getY();
//              }
//              else if (e.getButton() == MouseEvent.BUTTON2) {
//                      centerMouseY = e.getY();
//              }
//
//      }
//
//      public void mouseReleased(MouseEvent e) {
//
//              if (e.getButton() == MouseEvent.BUTTON1) { // reset the buffers
//                      leftMouseX = -1.0f;
//                      leftMouseY = -1.0f;
//              }
//              else if (e.getButton() == MouseEvent.BUTTON3) { // reset the buffers
//                      rightMouseX = -1.0f;
//                      rightMouseY = -1.0f;
//              }
//              else if (e.getButton() == MouseEvent.BUTTON2) {
//                      centerMouseY = -1.0f;
//              }
//
//      }
//
//      public void mouseDragged(MouseEvent e) {
//
//              if (leftMouseX != -1.0f) { // change rotation
//                      if(!useCamera) {
//                              yRotDisplay += (e.getY() - leftMouseY) * 0.03;
//                              xRotDisplay += (e.getX() - leftMouseX) * 0.05;
//                      }
//                      else {
//                              float dx = (e.getX() - leftMouseX) * 0.02f;
//                              float dy = (e.getY() - leftMouseY) * 0.02f;
//                              
//                              // translate eye, so that the origin is its target
//                              Vector3f negTarget = new Vector3f(eyeTarget);
//                              negTarget.negate();
//                              eye.add(negTarget);
//                              
//                              // rotation around vertical axis
//                              eye.rotate(dx, eyeUp);
//      
//                              // rotation around horizontal axis
//                              Vector3f dir = new Vector3f(eyeTarget);
//                              dir.subtract(eye);
//                              Vector3f horDir = new Vector3f();
//                              horDir.cross(eyeUp, dir);                       
//                              eye.rotate(dy, horDir);
//                              //eyeUp.rotate(dy, horDir);
//                              //eyeUp.normalize();
//                              
//                              // reverse translation
//                              eye.add(eyeTarget);
//                      }
//                      
//                      leftMouseX = e.getX();
//                      leftMouseY = e.getY();
//              }
//              else if (rightMouseX != -1.0f) { // change translation
//                      if(!useCamera) {
//                              xShiftDisplay += -(e.getY() - rightMouseY) * 0.5;
//                              zShiftDisplay += -(e.getX() - rightMouseX) * 0.5;
//                      }
//                      else {
//                              float dx = (e.getX() - rightMouseX) * sceneSize / 1000;
//                              float dy = (e.getY() - rightMouseY) * sceneSize / 1000;
//                              
//                              // horizontal translation
//                              Vector3f dir = new Vector3f(eyeTarget);
//                              dir.subtract(eye);
//                              Vector3f horDir = new Vector3f();
//                              horDir.cross(eyeUp, dir);
//                              horDir.normalize();
//                              horDir.scale(dx);
//                              
//                              // vertical translation
//                              Vector3f vertDir = new Vector3f(eyeUp);
//                              vertDir.normalize();
//                              vertDir.scale(dy);
//                              vertDir.negate();
//                              //System.out.println("hor move: " + horDir);
//                              //System.out.println("vert mode: " + vertDir);
//                              
//                              eye.add(horDir);
//                              eye.add(vertDir);
//                              eyeTarget.add(horDir);
//                              eyeTarget.add(vertDir);
//                      }
//                      
//                      rightMouseX = e.getX();
//                      rightMouseY = e.getY();
//              }
//              else if (centerMouseY != -1.0f) { // zoom
//                      zoom(e.getY() - (int)centerMouseY);
//                      centerMouseY = e.getY();
//              }
//
//              redraw();
//      }
//      
//      public void zoom(int delta) {
//              if(!useCamera) {                                
//                      zoomDisplay += -(delta) * 10 / sceneSize;
//                      if (zoomDisplay < 0.01) {
//                              zoomDisplay = 0.01f;
//                      }
//              }
//              else {
//                      float dy = -(delta) * sceneSize / 1000;                 
//                      
//                      Vector3f dir = new Vector3f(eyeTarget);
//                      dir.subtract(eye);
//                      dir.normalize();
//                      dir.scale(dy);                  
//                      eye.add(dir);
//              }       
//      }


        public void runMain() {
                // Disable abyssmally slow Sun renderer on OS X 10.5.
                if(platform == MACOSX) {
                        // Only run this on OS X otherwise it can cause a permissions error.
                        // http://dev.processing.org/bugs/show_bug.cgi?id=976
                        System.setProperty("apple.awt.graphics.UseQuartz", "true");
                }

                try {
                        boolean external = false;

                        String name = null;
                        boolean present = false;
                        Color backgroundColor = Color.black; //BLACK;
                        Color stopColor = Color.gray; //GRAY;
                        GraphicsDevice displayDevice = null;
                        boolean hideStop = false;

                        // try to get the user folder. if running under java web start,
                        // this may cause a security exception if the code is not signed.
                        // http://processing.org/discourse/yabb_beta/YaBB.cgi?board=Integrate;action=display;num=1159386274
                        String folder = null;
                        try {
                                folder = System.getProperty("user.dir");
                        }
                        catch (Exception e) {
                        }

                        // Set this property before getting into any GUI init code
                        //System.setProperty("com.apple.mrj.application.apple.menu.about.name", name);
                        // This )*)(*@#$ Apple crap don't work no matter where you put it
                        // (static method of the class, at the top of main, wherever)

                        if(displayDevice == null) {
                                GraphicsEnvironment environment = GraphicsEnvironment
                                                .getLocalGraphicsEnvironment();
                                displayDevice = environment.getDefaultScreenDevice();
                        }

                        Frame frame = new Frame(displayDevice.getDefaultConfiguration());

                        //Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
                        // remove the grow box by default
                        // users who want it back can call frame.setResizable(true)
                        frame.setResizable(false);

                        // Set the trimmings around the image
                        //frame.setIconImage(image);
                        frame.setTitle(name);

                        //          Class c = Class.forName(name);
                        //Class<?> c = Thread.currentThread().getContextClassLoader().loadClass(name);
                        //PApplet applet = (PApplet) c.newInstance();
                        PApplet applet = this;

                        // these are needed before init/start
                        applet.frame = frame;
                        applet.sketchPath = folder;
                        //applet.args = PApplet.subset(args, 1);

                        // For 0149, moving this code (up to the pack() method) before init().
                        // For OpenGL (and perhaps other renderers in the future), a peer is
                        // needed before a GLDrawable can be created. So pack() needs to be
                        // called on the Frame before applet.init(), which itself calls size(),
                        // and launches the Thread that will kick off setup().
                        // http://dev.processing.org/bugs/show_bug.cgi?id=891
                        // http://dev.processing.org/bugs/show_bug.cgi?id=908
                        if(present) {
                                frame.setUndecorated(true);
                                frame.setBackground(backgroundColor);
                                displayDevice.setFullScreenWindow(frame);
                        }
                        frame.setLayout(null);
                        frame.add(applet);
                        frame.pack();

                        applet.init();

                        // Wait until the applet has figured out its width.
                        // In a static mode app, this will be after setup() has completed,
                        // and the empty draw() has set "finished" to true.
                        // TODO make sure this won't hang if the applet has an exception.
                        while(applet.defaultSize && !applet.finished) {
                                //System.out.println("default size");
                                try {
                                        Thread.sleep(5);

                                }
                                catch (InterruptedException e) {
                                        //System.out.println("interrupt");
                                }
                        }
                        //println("not default size " + applet.width + " " + applet.height);
                        //println("  (g width/height is " + applet.g.width + "x" + applet.g.height + ")");

                        if(present) {
                                //              frame.setUndecorated(true);
                                //              frame.setBackground(backgroundColor);
                                //              displayDevice.setFullScreenWindow(frame);

                                //              frame.add(applet);
                                Dimension fullscreen = frame.getSize();
                                applet.setBounds((fullscreen.width - applet.width) / 2,
                                                (fullscreen.height - applet.height) / 2, applet.width,
                                                applet.height);

                                if(!hideStop) {
                                        Label label = new Label("stop");
                                        label.setForeground(stopColor);
                                        label.addMouseListener(new MouseAdapter() {
                                                public void mousePressed(MouseEvent e) {
                                                        System.exit(0);
                                                }
                                        });
                                        frame.add(label);

                                        Dimension labelSize = label.getPreferredSize();
                                        // sometimes shows up truncated on mac
                                        //System.out.println("label width is " + labelSize.width);
                                        labelSize = new Dimension(100, labelSize.height);
                                        label.setSize(labelSize);
                                        label.setLocation(20, fullscreen.height - labelSize.height
                                                        - 20);
                                }

                                // not always running externally when in present mode
                                if(external) {
                                        applet.setupExternalMessages();
                                }

                        }
                        else { // if not presenting
                                // can't do pack earlier cuz present mode don't like it
                                // (can't go full screen with a frame after calling pack)
                                //              frame.pack();  // get insets. get more.
                                Insets insets = frame.getInsets();

                                int windowW = Math.max(applet.width, MIN_WINDOW_WIDTH)
                                                + insets.left + insets.right;
                                int windowH = Math.max(applet.height, MIN_WINDOW_HEIGHT)
                                                + insets.top + insets.bottom;

                                frame.setSize(windowW, windowH);

                                if(external) {
//                                      int locationX = editorLocation[0] - 20;
//                                      int locationY = editorLocation[1];
//
//                                      if(locationX - windowW > 10) {
//                                              // if it fits to the left of the window
//                                              frame.setLocation(locationX - windowW, locationY);
//
//                                      }
//                                      else { // doesn't fit
//                                              // if it fits inside the editor window,
//                                              // offset slightly from upper lefthand corner
//                                              // so that it's plunked inside the text area
//                                              locationX = editorLocation[0] + 66;
//                                              locationY = editorLocation[1] + 66;
//
//                                              if((locationX + windowW > applet.screenWidth - 33)
//                                                              || (locationY + windowH > applet.screenHeight - 33)) {
//                                                      // otherwise center on screen
//                                                      locationX = (applet.screenWidth - windowW) / 2;
//                                                      locationY = (applet.screenHeight - windowH) / 2;
//                                              }
//                                              frame.setLocation(locationX, locationY);
//                                      }
                                }
                                else { // just center on screen
                                        frame.setLocation((applet.screenWidth - applet.width) / 2,
                                                        (applet.screenHeight - applet.height) / 2);
                                }

                                //              frame.setLayout(null);
                                //              frame.add(applet);

                                if(backgroundColor == Color.black) { //BLACK) {
                                        // this means no bg color unless specified
                                        backgroundColor = SystemColor.control;
                                }
                                frame.setBackground(backgroundColor);

                                int usableWindowH = windowH - insets.top - insets.bottom;
                                applet.setBounds((windowW - applet.width) / 2, insets.top
                                                + (usableWindowH - applet.height) / 2, applet.width,
                                                applet.height);

                                if(external) {
                                        applet.setupExternalMessages();

                                }
                                else { // !external
                                        frame.addWindowListener(new WindowAdapter() {
                                                public void windowClosing(WindowEvent e) {
                                                        System.exit(0);
                                                }
                                        });
                                }

                                // handle frame resizing events
                                applet.setupFrameResizeListener();

                                // all set for rockin
                                if(applet.displayable()) {
                                        frame.setVisible(true);
                                }
                        }

                        //System.out.println("showing frame");
                        //System.out.println("applet requesting focus");
                        applet.requestFocus(); // ask for keydowns
                        //System.out.println("exiting main()");

                }
                catch (Exception e) {
                        e.printStackTrace();
                        System.exit(1);
                }
        }
}

---

mod_vis
Author(s): Moritz Tenorth, Jakob Engel
autogenerated on Fri Jan 11 09:54:14 2013