sectors3dpanel.java

一个用于排队系统仿真的开源软件,有非常形象的图象仿真过程!

                // Disegna i settori di saturazione
                g2.setColor(sectorcolor);
                g2.fillPolygon(xxp,yyp,sector.CountPoint());
                if (numstat!=1){
                    g2.setColor(Color.BLACK);
                    g2.draw(new Polygon(xxp,yyp,sector.CountPoint()));
                }

                // Adds this sector to labels
                double[] centre = sector.getCentre();
                labels.add(new Caption(sector.getName(), centre[0], centre[1], sector.getType()));

            }//per ogni settore

            // Now draws captions and link them to the corresponding sector
            Iterator i = labels.iterator();
            // Stores prevoius y value to avoid collision
            float previousy = Float.NEGATIVE_INFINITY;
            // Value where label should be placed
            float yvalue;

            boolean skipSingle = false, skipDouble = false;

            // Skips single and double sector labels if they are too many
            Caption first = (Caption) labels.first();
            float textHeight = (float)g2.getFontMetrics().getStringBounds(first.getLabel(), g2).getHeight();
            if (first.getY() * height + textHeight * labels.size() > getHeight()) {
                skipSingle = true;
                // now checks if double have to be skipped too
                int count = 0;
                while (i.hasNext())
                    if (((Caption)i.next()).getStatN() > 1)
                        count ++;
                // resets iterator for next cycle
                i = labels.iterator();
                // Decides if doubles have to be skipped too
                if (first.getY() * height + textHeight * count > getHeight())
                    skipDouble = true;
            }


            while (i.hasNext()) {
                Caption c = (Caption) i.next();
                // Performs skipping if needed
                if (skipSingle && c.getStatN() == 1)
                        continue;
                else if (skipDouble && c.getStatN() == 2)
                        continue;

                // Select color basing on number of station in this sector
                if (c.getStatN() == 1)
                    g2.setColor(LINESINGLE);
                else if (c.getStatN() == 2)
                    g2.setColor(LINEDOUBLE);
                else
                    g2.setColor(LINEMORE);

                yvalue = (float)c.getY()*height;
                if (yvalue < previousy)
                    // collision detected
                    yvalue = previousy;

                // Writes label and draw its line
                g2.setStroke(LABEL_LINE);
                g2.draw(new Line2D.Double(height*(rad3+.1)+10 -4, -yvalue, c.getX()*height,-c.getY()*height));
                g2.setStroke(LINES);
                g2.setColor(BLACK);
                g2.drawString(c.getLabel(),(float)(height*(rad3+.1)+10),-yvalue+(float)g2.getFontMetrics().getStringBounds(c.getLabel(), g2).getHeight() / 2 - 4);
                // updates previousy adding height of this label
                previousy = yvalue + (float)g2.getFontMetrics().getStringBounds(c.getLabel(), g2).getHeight();
            }

            // Disegna gli assi
            g2.setStroke(LINES);
            sectorcolor = BLACK;
            g2.setColor(sectorcolor);
            Line2D class3 = new Line2D.Double(rad3d2*height,-1*height,rad3d2*height,-1.1*height);
            Line2D class2 = new Line2D.Double(rad3*height,0,rad3*height +.1*height,.05*height);
            Line2D class1 = new Line2D.Double(0,0,-.1*height,.05*height);
            g2.draw(class3);
            g2.draw(class2);
            g2.draw(class1);

            // Arrow on class 3 axis
            Line2D fclass31 = new Line2D.Double(rad3d2*height,-1.1*height,rad3d2*height -0.05*height,-1.1*height +0.05*height);
            Line2D fclass32 = new Line2D.Double(rad3d2*height,-1.1*height,rad3d2*height +0.05*height,-1.1*height +0.05*height);
            g2.draw(fclass31);
            g2.draw(fclass32);

            // Arrow on class 2 axis
            Line2D fclass21 = new Line2D.Double(rad3*height +.1*height,.05*height,rad3*height +.1*height -.06*height,.05*height +.03*height);
            Line2D fclass22 = new Line2D.Double(rad3*height +.1*height,.05*height,rad3*height +.1*height -.03*height,.05*height -.06*height);
            g2.draw(fclass21);
            g2.draw(fclass22);

            // Arrow on class 1 axis
            Line2D fclass11 = new Line2D.Double(-.1*height,.05*height,-.1*height +.06*height,.05*height +0.03*height);
            Line2D fclass12 = new Line2D.Double(-.1*height,.05*height,-.1*height +.03*height,.05*height -0.06*height);
            g2.draw(fclass11);
            g2.draw(fclass12);

            // Axis labels
            g2.setColor(GREY);
            g2.drawString(classNames[2] +" %",(float)(height*rad3d2-g2.getFontMetrics().getStringBounds(classNames[2]+" %", g2).getWidth()),-height);
            g2.drawString(classNames[1] +" %",(float)(height*rad3-g2.getFontMetrics().getStringBounds(classNames[1]+" %", g2).getWidth()),15);
            g2.drawString(classNames[0] +" %",0,15);
            // Graph is shown
            isShown = true;

            // Disegna il perimetro del triangolo
            g2.setColor(Color.BLACK);
            g2.draw(new Polygon(xt,yt,3));
        }
    }

    /**
     * This method will calculate mouse position in beta coordinates
     * @param x mouse position x coordinate
     * @param y mouse position y coordinate
     * @return  string with mouse position in beta coordinates or null if mouse is out of
     * graph
     */
    protected String getCoordinates(int x, int y) {
        double b1 =  rad3d3*((double)x-traslationX)/height-0.5*(traslationY-y)/height;
        double b2 =  (traslationY - y)/height;
        double b0 = 1 - b1 - b2;

        if (b0 >= 0 && b0 <= 1 &&
            b1 >= 0 && b1 <= 1 &&
            b2 >= 0 && b2 <= 1)
            return classNames[0] + ": " + formatter.format(b0) + "% " +
                    classNames[1] +": " + formatter.format(b1) + "% " +
                    classNames[2] +": " + formatter.format(b2) + "%";
        else
            return null;
    }

    /**
     * Inner class used to sort sector captions
     * <br> Author: Bertoli Marco
     */
    protected class Caption implements Comparable{
        private double x,y;
        private String label;
        private int statN;

        /**
         * Builds a new Caption object
         * @param label label of the caption
         * @param x value of x coordinate
         * @param y value of y coordinate
         * @param statN number of stations
         */
        public Caption(String label, double x, double y, int statN) {
            this.label = label;
            this.x = x;
            this.y = y;
            this.statN = statN;
        }

        /**
         * Gets value of x
         * @return value of x
         */
        public double getX() {
            return x;
        }

        /**
         * value of y
         * @return value of y
         */
        public double getY() {
            return y;
        }

        /**
         * Gets label caption
         * @return label caption
         */
        public String getLabel() {
            return label;
        }

        /**
         * Gets station number in this sector
         * @return station number in this sector
         */
        public int getStatN() {
            return statN;
        }

        /**
         * <p>Compares this object with the specified object for order.  Returns a
         * negative integer, zero, or a positive integer as this object is less
         * than, equal to, or greater than the specified object.</p>
         * <p>Compares y values and if they are equals compares x values.</p>
         *
         * @param o the Object to be compared.
         * @return a negative integer, zero, or a positive integer as this object
         *         is less than, equal to, or greater than the specified object.
         * @throws ClassCastException if the specified object's type prevents it
         *                            from being compared to this Object.
         */
        public int compareTo(Object o) {
            Caption c = (Caption) o;
            // Compares y values and if they are equals, compares x
            if (y < c.y)
                return -1;
            else if (y > c.y)
                return 1;
            else {
                if (x < c.x)
                    return -1;
                else if (x > c.x)
                    return 1;
                else
                    return 0;
            }
        }
    }

}