/**
* This method is to be called from the <code>paint(Graphics g)</code> method of the drawing
* panel/canvas. It uses the graphical context of the drawing panel/canvas to construct the
* commentary box on the drawing panel/canvas.
*
* @param g Graphical context from the <code>paint(Graphics g)</code> method of the drawing
* panel/canvas.
* @see Graphics
*/
public void draw(Graphics g) {
if (str.length() < 1) return;
g.setColor(bg);
g.fillPolygon(xPts, yPts, nPts);
g.setColor(Color.black);
g.drawPolygon(xPts, yPts, nPts);
g.setColor(fg);
g.setFont(font);
g.drawString(str, topLeft.x + 4, topLeft.y + height - 10);
}
public void Draw_Arrow(Graphics g) {
double arrow_angle;
int[] arrow_x = new int[3];
int[] arrow_y = new int[3];
int[] arrow_pt = new int[2];
double gradient, constant;
double distance, temp_dist;
double mid_x_diff, mid_y_diff;
double arrow_ratio;
double trans_pts_x, trans_pts_y;
trans_pts_x = 0.00;
trans_pts_y = 0.00;
arrow_ratio = 0.00;
mid_x_diff = 0.00;
mid_y_diff = 0.00;
distance = 0.00;
temp_dist = 0.00;
gradient = 0.00;
constant = 0.00;
arrow_x[0] = 0;
arrow_x[1] = 0;
arrow_x[2] = 0;
arrow_y[0] = 0;
arrow_y[1] = 0;
arrow_y[2] = 0;
arrow_angle = 0.00;
arrow_angle = (start_angle + arc_angle / 2) * Math.PI / 180;
// if (num_arcs != 1) {
arrow_x[0] = (int) Math.round(img_mid_x + img_cir * Math.cos(arrow_angle));
arrow_y[0] = (int) Math.round(img_mid_y - img_cir * Math.sin(arrow_angle));
// }
// else {
// arrow_x[0] = mid_pt_x;
// arrow_y[0] = mid_pt_y;
// g.drawString("1", (int)arrow_x[0], (int)arrow_y[0]);
// }
/*calculate the distance between the midpt (on arc) and start node*/
mid_x_diff = Math.abs(arrow_x[0] - start_x);
mid_y_diff = Math.abs(arrow_y[0] - start_y);
distance = Math.sqrt((mid_x_diff * mid_x_diff) + (mid_y_diff * mid_y_diff));
temp_dist = distance - HEAD_DISTANCE;
arrow_ratio = temp_dist / distance;
arrow_x[1] = (int) ((arrow_x[0] - start_x) * arrow_ratio + start_x);
arrow_y[1] = (int) ((arrow_y[0] - start_y) * arrow_ratio + start_y);
// calculate the gradient of the tangent
// equation of the circle is (x-c)^2 + (y-d)^2 = R^2
// equation of the line is y = mx + c
gradient = ((-1) * (arrow_x[0] - img_mid_x)) / (arrow_y[0] - img_mid_y);
// find the constant value of the line
constant = arrow_y[0] - gradient * arrow_x[0];
arrow_pt = Translated_Point(constant, arrow_x, arrow_y, gradient);
arrow_x[2] = arrow_pt[0];
arrow_y[2] = arrow_pt[1];
if (num_arcs == 1 && testcase != 10) {
/*x and y distances between mid pts and arc mid pts */
trans_pts_x = arrow_x[0] - mid_pt_x;
trans_pts_y = arrow_y[0] - mid_pt_y;
arrow_x[0] = mid_pt_x;
arrow_y[0] = mid_pt_y;
arrow_x[1] = arrow_x[1] - (int) trans_pts_x;
arrow_y[1] = arrow_y[1] - (int) trans_pts_y;
arrow_x[2] = arrow_x[2] - (int) trans_pts_x;
arrow_y[2] = arrow_y[2] - (int) trans_pts_y;
} else if (num_arcs == 1 && testcase == 10) {
System.out.println("hello...");
arrow_x[0] = (int) (start_x - diameter);
arrow_y[0] = (int) start_y;
arrow_x[1] = (int) (diameter / 4 + arrow_x[0]);
arrow_y[1] = (int) (diameter / 6 - arrow_y[0]);
arrow_x[2] = (int) (diameter / 4 - arrow_x[0]);
arrow_y[2] = (int) (diameter / 6 - arrow_y[0]);
}
g.setColor(arrow_colour);
g.fillPolygon(arrow_x, arrow_y, 3);
if (value != 0) {
g.setColor(value_colour);
if (show_cost) {
Display_Value(g, arrow_x, arrow_y);
}
}
}