// From: http://forum.java.sun.com/thread.jspa?threadID=378460&tstart=135
void drawArrow(
Graphics2D g2d,
int xCenter,
int yCenter,
int x,
int y,
float stroke,
BasicStroke drawStroke) {
double aDir = Math.atan2(xCenter - x, yCenter - y);
// Line can be dashed.
g2d.setStroke(drawStroke);
g2d.drawLine(x, y, xCenter, yCenter);
// make the arrow head solid even if dash pattern has been specified
g2d.setStroke(lineStroke);
Polygon tmpPoly = new Polygon();
int i1 = 12 + (int) (stroke * 2);
// make the arrow head the same size regardless of the length length
int i2 = 6 + (int) stroke;
tmpPoly.addPoint(x, y);
tmpPoly.addPoint(x + xCor(i1, aDir + .5), y + yCor(i1, aDir + .5));
tmpPoly.addPoint(x + xCor(i2, aDir), y + yCor(i2, aDir));
tmpPoly.addPoint(x + xCor(i1, aDir - .5), y + yCor(i1, aDir - .5));
tmpPoly.addPoint(x, y); // arrow tip
g2d.drawPolygon(tmpPoly);
// Remove this line to leave arrow head unpainted:
g2d.fillPolygon(tmpPoly);
}
private void draw_horizon(int rad, Point center, int[] angles) {
// Draw an arc
int arc_angle =
((angles[0] > angles[1]) ? (360 - angles[0]) + angles[1] : (angles[1] - angles[0]));
Polygon remainder = new Polygon();
offgraphics_.setColor(GREEN);
offgraphics_.fillArc(center.x - rad, center.y - rad, 2 * rad, 2 * rad, angles[0], arc_angle);
if (pitch_ != 0) {
if ((pitch_ > 0 && Math.abs(roll_) < 90) || (pitch_ < 0 && Math.abs(roll_) >= 90))
offgraphics_.setColor(BLUE);
int cover_angle = (angles[0] + arc_angle / 2 + ((arc_angle < 180) ? 180 : 0)) % 360;
// System.out.println (points[0] + " " + points[1]);
// System.out.println (accepted_point);
remainder.addPoint(
center.x + polar_to_rect_x(rad, cover_angle),
center.y - polar_to_rect_y(rad, cover_angle));
remainder.addPoint(
center.x + polar_to_rect_x(rad, angles[0]), center.y - polar_to_rect_y(rad, angles[0]));
remainder.addPoint(
center.x + polar_to_rect_x(rad, angles[1]), center.y - polar_to_rect_y(rad, angles[1]));
offgraphics_.fillPolygon(remainder);
// offgraphics_.setColor (getBackground ());
// offgraphics_.drawPolygon (remainder);
}
}
private Polygon outline(int x, int y, double direction) {
Polygon shape = new Polygon();
shape.addPoint(x, y);
addPointRelative(shape, x, y, getOuterRadius(), direction - getAngle());
addPointRelative(shape, x, y, getInnerRadius(), direction);
addPointRelative(shape, x, y, getOuterRadius(), direction + getAngle());
shape.addPoint(x, y); // Closing the polygon (TEG 97-04-23)
return shape;
}
/**
* Draws a single arrow head
*
* @param aG the canvas to draw on;
* @param aXpos the X position of the arrow head;
* @param aYpos the (center) Y position of the arrow head;
* @param aFactor +1 to have a left-facing arrow head, -1 to have a right-facing arrow head;
* @param aArrowWidth the total width of the arrow head;
* @param aArrowHeight the total height of the arrow head.
*/
public static final void drawArrowHead(
final Graphics2D aG,
final int aXpos,
final int aYpos,
final int aFactor,
final int aArrowWidth,
final int aArrowHeight) {
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);
aG.fill(arrowHead);
}
/**
* Adds a polygon. Note that the vertices of the polygon are passed using a float[][] and NOT a
* float[]. Eg.
*
* <p>{{x0, y0, z0}, {x1, y1, z1}, ...}
*
* <p>We *flatten* the data once it is encapsulated inside this class; outside this class we want
* clarity; inside this class we want speed!
*/
public int addPolygon(float[][] vs, Color c, boolean doubleSided) {
Polygon polygon = new Polygon(vs.length, c, doubleSided);
for (int i = 0; i < vs.length; i++) {
polygon.addPoint(this.addPoint(vs[i][0], vs[i][1], vs[i][2]));
}
polygons[polynext] = polygon;
// if this was the last polygon then we may now set the bounding box
if (polynext == polygons.length - 1) {
this.box.setBB();
}
return polynext++;
}
/**
* The GraphicDrawer.paint() Function allows the user to draw pre-defined graphics into a given
* Graphics Object. The user may give the rectangle properties which defines at best the desired
* area to draw with a Int id which requests the desired graphic, whenever it's vectorial or
* raster graphics
*
* @author LuisArturo
*/
public void paint(int id, Dimension r, Graphics g) {
Graphics2D g2;
switch (id) {
case FILE:
{
g2 = (Graphics2D) g;
try {
FileInputStream img = new FileInputStream("archivo.png");
BufferedImage in = ImageIO.read(img);
g2.drawImage(
in, r.width * 2 / 10, r.height * 2 / 10, r.width * 2 / 3, r.height * 2 / 3, null);
} catch (Exception e) {
e.printStackTrace();
}
}
break;
case REDO:
{
g2 = (Graphics2D) g;
g2.setColor(color);
g2.fillArc(
r.width * 2 / 10, r.height * 2 / 10, r.width * 6 / 10, r.height * 6 / 10, 270, 225);
Polygon p = new Polygon();
p.addPoint(r.width * 2 / 10, r.height * 2 / 10);
p.addPoint(r.width * 2 / 10, r.height * 5 / 10);
p.addPoint(r.width * 5 / 10, r.height * 5 / 10);
g2.fillPolygon(p);
g2.setColor(g2.getBackground());
g2.fillArc(
r.width * 3 / 10, r.height * 3 / 10, r.width * 4 / 10, r.height * 4 / 10, 270, 225);
}
break;
case TEXT:
{
g2 = (Graphics2D) g;
g2.setColor(color);
g2.setFont(new Font("Serif", Font.ITALIC | Font.BOLD, r.height * 6 / 10));
g2.drawChars("A".toCharArray(), 0, 1, r.width * 3 / 10, r.height * 7 / 10);
}
break;
case SELECT:
{
g2 = (Graphics2D) g;
try {
FileInputStream img = new FileInputStream("mano.png");
BufferedImage in = ImageIO.read(img);
g2.drawImage(
in, r.width * 1 / 10, r.height * 1 / 10, r.width * 2 / 3, r.height * 2 / 3, null);
} catch (Exception e) {
e.printStackTrace();
}
}
break;
case PENCIL:
{
g2 = (Graphics2D) g;
try {
FileInputStream img = new FileInputStream("lapiz.png");
BufferedImage in = ImageIO.read(img);
g2.drawImage(
in, r.width * 2 / 10, r.height * 2 / 10, r.width * 2 / 3, r.height * 2 / 3, null);
} catch (Exception e) {
e.printStackTrace();
}
}
break;
case ARROW:
{
g2 = (Graphics2D) g;
try {
FileInputStream img = new FileInputStream("arrow.png");
BufferedImage in = ImageIO.read(img);
g2.drawImage(
in, r.width * 2 / 10, r.height * 2 / 10, r.width * 2 / 3, r.height * 2 / 3, null);
} catch (Exception e) {
e.printStackTrace();
}
}
break;
case ZOOM:
{
g2 = (Graphics2D) g;
try {
FileInputStream img = new FileInputStream("zoom.png");
BufferedImage in = ImageIO.read(img);
g2.drawImage(
in, r.width * 2 / 10, r.height * 2 / 10, r.width * 2 / 3, r.height * 2 / 3, null);
} catch (Exception e) {
e.printStackTrace();
}
}
break;
}
}
private void addPointRelative(Polygon shape, int x, int y, double radius, double angle) {
shape.addPoint(x + (int) (radius * Math.cos(angle)), y + (int) (radius * Math.sin(angle)));
}