// 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);
}
public static Complex log(double x_re, double x_im) {
double h;
/* #ifdef JAVA5 */
// h = Math.hypot(x_re, x_im);
/* #else */
h = DComplex.hypot(x_re, x_im);
/* #endif */
return make(Math.log(h), Math.atan2(x_im, x_re));
}
public static DComplex power(double x_re, double x_im, double y_re, double y_im) {
double h;
/* #ifdef JAVA5 */
// h = Math.hypot(x_re, x_im);
/* #else */
h = DComplex.hypot(x_re, x_im);
/* #endif */
double logr = Math.log(h);
double t = Math.atan2(x_im, x_re);
double r = Math.exp(logr * y_re - y_im * t);
t = y_im * logr + y_re * t;
return Complex.polar(r, t);
}
protected void recalcOutFreq() {
if (inRate == 0f) return;
double omegaIn, omegaOut, warp;
ParamField ggOutFreq;
omegaIn = pr.para[PR_INFREQ].val / inRate * Constants.PI2;
warp = Math.max(-0.98, Math.min(0.98, pr.para[PR_WARP].val / 100)); // DAFx2000 'b'
omegaOut = omegaIn + 2 * Math.atan2(warp * Math.sin(omegaIn), 1.0 - warp * Math.cos(omegaIn));
ggOutFreq = (ParamField) gui.getItemObj(GG_OUTFREQ);
if (ggOutFreq != null) {
ggOutFreq.setParam(new Param(omegaOut / Constants.PI2 * inRate, Param.ABS_HZ));
}
}
public void move() {
objtimer++;
// move
if (xmot.random && objtimer % (int) (35 * xmot.randomchg) == 0) {
xspeed = xmot.speed * random(-1, 1, 2);
}
if (ymot.random && objtimer % (int) (35 * ymot.randomchg) == 0) {
yspeed = ymot.speed * random(-1, 1, 2);
}
if (player != null) {
double playerdist =
Math.sqrt((player.x - x) * (player.x - x) + (player.y - y) * (player.y - y))
* 100.0
/ (pfWidth());
if (xmot.toplayer && playerdist > xmot.toplayermin && playerdist < xmot.toplayermax) {
xspeed = 0;
x += xmot.speed * (player.x > x ? 1 : -1);
} else if (xmot.frplayer
&& playerdist > xmot.frplayermin
&& playerdist < xmot.frplayermax) {
xspeed = 0;
x += xmot.speed * (player.x < x ? 1 : -1);
}
if (ymot.toplayer && playerdist > ymot.toplayermin && playerdist < ymot.toplayermax) {
yspeed = 0;
y += ymot.speed * (player.y > y ? 1 : -1);
} else if (ymot.frplayer
&& playerdist > ymot.frplayermin
&& playerdist < ymot.frplayermax) {
yspeed = 0;
y += ymot.speed * (player.y < y ? 1 : -1);
}
}
// react to background
int bounces = 0;
if (bouncesides.equals("any")) {
bounces |= 15;
} else if (bouncesides.equals("top")) {
bounces |= 1;
} else if (bouncesides.equals("bottom")) {
bounces |= 2;
} else if (bouncesides.equals("topbottom")) {
bounces |= 3;
} else if (bouncesides.equals("left")) {
bounces |= 4;
} else if (bouncesides.equals("right")) {
bounces |= 8;
} else if (bouncesides.equals("leftright")) {
bounces |= 12;
}
if ((bounces & 1) != 0 && y < 0) {
y = 0;
if (yspeed < 0) yspeed = -yspeed;
}
if ((bounces & 2) != 0 && y > pfHeight() - 16) {
y = pfHeight() - 16;
if (yspeed > 0) yspeed = -yspeed;
}
if ((bounces & 4) != 0 && x < 0) {
x = 0;
if (xspeed < 0) xspeed = -xspeed;
}
if ((bounces & 8) != 0 && x > pfWidth() - 16) {
x = pfWidth() - 16;
if (xspeed > 0) xspeed = -xspeed;
}
// shoot
if (shoot && shootfreq > 0.0 && objtimer % (int) (shootfreq * 35) == 0) {
if (shootdir.equals("left")) {
new AgentBullet(x, y, bullettype, sprite, diebgtype | blockbgtype, -shootspeed, 0);
} else if (shootdir.equals("right")) {
new AgentBullet(x, y, bullettype, sprite, diebgtype | blockbgtype, shootspeed, 0);
} else if (shootdir.equals("up")) {
new AgentBullet(x, y, bullettype, sprite, diebgtype | blockbgtype, 0, -shootspeed);
} else if (shootdir.equals("down")) {
new AgentBullet(x, y, bullettype, sprite, diebgtype | blockbgtype, 0, shootspeed);
} else if (shootdir.equals("player") && player != null) {
double angle = Math.atan2(player.x - x, player.y - y);
new AgentBullet(
x,
y,
bullettype,
sprite,
diebgtype | blockbgtype,
shootspeed * Math.sin(angle),
shootspeed * Math.cos(angle));
}
}
}
/** Calculates the outline of an arrow tip. */
public Polygon outline(int x1, int y1, int x2, int y2) {
double dir = Math.PI / 2 - Math.atan2(x2 - x1, y2 - y1);
return outline(x1, y1, dir);
}
// returns angle of dy/dx as a value from 0...2PI
private double atan3(double dy, double dx) {
double a = Math.atan2(dy, dx);
if (a < 0) a = (Math.PI * 2.0) + a;
return a;
}