public static Color gradientColor(double value) {
if (value < 0.0) return Color.gray;
if (value > 1.0) value = 1.0;
int red = Math.min(255, (int) (512.0 - (value * 512.0)));
int green = Math.min(255, (int) (value * 512.0));
int blue = 0;
return new Color(red, green, blue);
}
public static void drawLine(Graphics g, int x1, int y1, int x2, int y2, int lineWidth) {
if (lineWidth == 1) g.drawLine(x1, y1, x2, y2);
else {
double angle;
double halfWidth = ((double) lineWidth) / 2.0;
double deltaX = (double) (x2 - x1);
double deltaY = (double) (y2 - y1);
if (x1 == x2) angle = Math.PI;
else angle = Math.atan(deltaY / deltaX) + Math.PI / 2;
int xOffset = (int) (halfWidth * Math.cos(angle));
int yOffset = (int) (halfWidth * Math.sin(angle));
int[] xCorners = {x1 - xOffset, x2 - xOffset + 1, x2 + xOffset + 1, x1 + xOffset};
int[] yCorners = {y1 - yOffset, y2 - yOffset, y2 + yOffset + 1, y1 + yOffset + 1};
g.fillPolygon(xCorners, yCorners, 4);
}
}
public static void drawValueBar(
int x, int y, String labelhead, double value, double percentage, int colorindex, Graphics g) {
g.setColor(GetColor(colorindex));
g.drawRect(x, y, VALUE_BAR_WIDTH, VALUE_BAR_HEIGHT);
int barwidth;
if (percentage < 0.0) {
// Unknown value
barwidth = VALUE_BAR_WIDTH - 1;
} else {
barwidth = (int) ((VALUE_BAR_WIDTH - 1) * Math.min(1.0, percentage));
}
// g.setColor(gradientColor(percentage));
g.fillRect(x + 1, y + 1, barwidth, VALUE_BAR_HEIGHT - 1);
if (labelhead != null) {
g.setFont(MainFrame.defaultFont);
// g.setColor(MainFrame.labelColor);
int off = 2;
g.drawString(labelhead, x + VALUE_BAR_WIDTH + 2, y + VALUE_BAR_HEIGHT);
// off += (labelhead.length()+1) * 4; // Just a guess
String maxStr = new String("DateRate [/sec]:");
off += (int) ((maxStr.length() + 1) * 5.5);
if (value < 0.0) {
g.drawString("?", x + VALUE_BAR_WIDTH + off, y + VALUE_BAR_HEIGHT);
} else {
if (percentage < 0.0) {
g.drawString(format(value), x + VALUE_BAR_WIDTH + off, y + VALUE_BAR_HEIGHT);
} else {
g.drawString(
format(value) + " (" + format(percentage * 100) + "%)",
x + VALUE_BAR_WIDTH + off,
y + VALUE_BAR_HEIGHT);
}
}
}
}
/* CALCULATE VALUES QUADRANTS: Calculate x-y values where direction is not
parallel to eith x or y axis. */
public static void calcValuesQuad(int x1, int y1, int x2, int y2) {
double arrowAng = Math.toDegrees(Math.atan((double) haw / (double) al));
double dist = Math.sqrt(al * al + aw);
double lineAng =
Math.toDegrees(Math.atan(((double) Math.abs(x1 - x2)) / ((double) Math.abs(y1 - y2))));
// Adjust line angle for quadrant
if (x1 > x2) {
// South East
if (y1 > y2) lineAng = 180.0 - lineAng;
} else {
// South West
if (y1 > y2) lineAng = 180.0 + lineAng;
// North West
else lineAng = 360.0 - lineAng;
}
// Calculate coords
xValues[0] = x2;
yValues[0] = y2;
calcCoords(1, x2, y2, dist, lineAng - arrowAng);
calcCoords(2, x2, y2, dist, lineAng + arrowAng);
}
/* CALCULATE COORDINATES: Determine new x-y coords given a start x-y and
a distance and direction */
public static void calcCoords(int index, int x, int y, double dist, double dirn) {
while (dirn < 0.0) dirn = 360.0 + dirn;
while (dirn > 360.0) dirn = dirn - 360.0;
// System.out.println("dirn = " + dirn);
// North-East
if (dirn <= 90.0) {
xValues[index] = x + (int) (Math.sin(Math.toRadians(dirn)) * dist);
yValues[index] = y - (int) (Math.cos(Math.toRadians(dirn)) * dist);
return;
}
// South-East
if (dirn <= 180.0) {
xValues[index] = x + (int) (Math.cos(Math.toRadians(dirn - 90)) * dist);
yValues[index] = y + (int) (Math.sin(Math.toRadians(dirn - 90)) * dist);
return;
}
// South-West
if (dirn <= 90.0) {
xValues[index] = x - (int) (Math.sin(Math.toRadians(dirn - 180)) * dist);
yValues[index] = y + (int) (Math.cos(Math.toRadians(dirn - 180)) * dist);
}
// Nort-West
else {
xValues[index] = x - (int) (Math.cos(Math.toRadians(dirn - 270)) * dist);
yValues[index] = y - (int) (Math.sin(Math.toRadians(dirn - 270)) * dist);
}
}