Java Utililty Methods Draw Arrow

List of utility methods to do Draw Arrow

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Description

The list of methods to do Draw Arrow are organized into topic(s).

Method

voiddrawArrow(Graphics2D g2d, int xCenter, int yCenter, int x, int y, float stroke)
It defines functionality to draw arrows, by using colors and coordinates. 
double aDir = Math.atan2(xCenter - x, yCenter - y);
g2d.drawLine(x, y, xCenter, yCenter);
g2d.setStroke(new BasicStroke(1f));
Polygon tmpPoly = new Polygon();
int i1 = 12 + (int) (stroke * 2);
int i2 = 6 + (int) stroke;
tmpPoly.addPoint(x, y);
tmpPoly.addPoint(x + xCor(i1, aDir + .3), y + yCor(i1, aDir + .3));
...
voiddrawArrowHead(final Graphics2D aG, final int aXpos, final int aYpos, final int aFactor, final int aArrowWidth, final int aArrowHeight)
Draws a single arrow head 
final double halfHeight = aArrowHeight / 2.0;
final int x1 = aXpos + (aFactor * aArrowWidth);
final int y1 = (int) Math.ceil(aYpos - halfHeight);
final int y2 = (int) Math.floor(aYpos + halfHeight);
final Polygon arrowHead = new Polygon();
arrowHead.addPoint(aXpos, aYpos);
arrowHead.addPoint(x1, y1);
arrowHead.addPoint(x1, y2);
...
voiddrawArrowHead(Graphics g, double c1, double c2, double phi, int l, int grad, boolean fill)
draw Arrow Head 
phi = (phi + 180) % 360;
int px = (int) (c1 + Math.cos((2 * Math.PI * (phi + grad) / 360)) * l);
int py = (int) (c2 - Math.sin((2 * Math.PI * (phi + grad) / 360)) * l);
int px2 = (int) (c1 + Math.cos((2 * Math.PI * (phi - grad) / 360)) * l);
int py2 = (int) (c2 - Math.sin((2 * Math.PI * (phi - grad) / 360)) * l);
if (fill) {
    g.fillPolygon(new int[] { (int) c1, px, px2 }, new int[] { (int) c2, py, py2 }, 3);
} else {
...
voiddrawArrowLine(Graphics g, int x1, int y1, int x2, int y2, int d, int h, boolean capOnly)
draw Arrow Line 
int dx = x2 - x1, dy = y2 - y1;
double D = Math.sqrt(dx * dx + dy * dy);
double xm = D - d, xn = xm, ym = h, yn = -h, x;
double sin = dy / D, cos = dx / D;
x = xm * cos - ym * sin + x1;
ym = xm * sin + ym * cos + y1;
xm = x;
x = xn * cos - yn * sin + x1;
...
voiddrawArrowLine(Graphics g, int x1, int y1, int x2, int y2, int dist, boolean arrowLeft, boolean arrowRight)
draw Arrow Line 
int off = 3;
g.drawLine(x1 + off + 1, y1, x2 - off - 1, y2);
if (arrowLeft) {
    g.drawLine(x1, y1, x1 + dist, y1 - off);
    g.drawLine(x1, y1, x1 + dist, y1 + off);
    g.drawLine(x1 + dist, y1 - off, x1 + dist, y1 + off);
if (arrowRight) {
...
voiddrawDoubleHeadedArrow(final Graphics aG, final int aX1, final int aY, final int aX2)
Draws a double headed arrow of 8x8. 
drawDoubleHeadedArrow(aG, aX1, aY, aX2, aY);
voiddrawHorizontalArrow(Graphics g, Rectangle r, boolean direction)
draw Horizontal Arrow 
int[] x;
int[] y;
int dy = r.height / 3;
int y0 = r.y;
int y1 = y0 + dy;
int y3 = y0 + r.height;
int y2 = y3 - dy;
int yc = (y1 + y2) / 2;
...