point p[] = new point[130];
int cur;
double velo[] = new double[p.length];	//velocity
double dire[] = new double[p.length];	//direction
double w[] = new double[p.length];	//width
double h[] = new double[p.length];	//height
boolean mouseP;
double cursX, cursY, cureX, cureY;	//current start x, y, end x, y.
double curW, curH;	//current width, current height.
double pressX, pressY, releaseX, releaseY;
long sTime, eTime;	//startTime, endTime;
double ch[] = new double[p.length];	//hsb hue
double cs[] = new double[p.length];	//hsb saturation
double cb[] = new double[p.length];	//hsb brightness
double curch, curcs, curcb;
Color col;
//sample

[setup, 600, 600]{
		setBackColor(255, 255, 255);
		cur = 0;
		for(int i = 0; i < p.length; i ++){
			p[i] = point(0, 0);
			velo[i] = 0.;
			dire[i] = 0.;
		}
		mouseP = false;
}

[paint]{
	clearAll();
	for(int i = 0; i <= cur; i ++){	
		col = Color.getHSBColor((float)ch[i], (float)cs[i], (float)cb[i]);
		setColor(col);
		fillRect(p[i].x, p[i].y, w[i], h[i]);
	}
	if(mouseP == true){
		col = Color.getHSBColor((float)curch, (float)curcs, (float)curcb);
		setColor(col);
		fillRect(cursX, cursY, curW, curH);
	}
}

[always]{
	if(mouseP == true){
		if(mouseX < pressX){
			cursX = mouseX;
			cureX = pressX;
		}else{
			cursX = pressX;
			cureX = mouseX;
		}
		if(mouseY < pressY){
			cursY = mouseY;
			cureY = pressY;
		}else{
			cursY = pressY;
			cureY = mouseY;
		}
		curW = cureX - cursX;
		curH = cureY - cursY;

		curch =	direction(pressX, pressY, mouseX, mouseY) / (2 *Math.PI);
		eTime = new java.util.Date().getTime();
		curcs = 1.0 - 1.0 * 100. /(double)(eTime - sTime);
		if(1.0 < curcs)	curcs = 1.0;
		if(curcs < 0.)	curcs = 0.;
		curcb = 1.0 - 0.2 * distance(pressX, pressY, mouseX, mouseY) / ((double)monitorWidth * Math.sqrt(2.));
		if(1.0 < curcb)	curcb = 1.0;
		if(curcb < 0.)	curcb = 0.;
	}
	for(int i = 0; i <= cur; i ++){
		p[i].push(velo[i], dire[i]);
		if(p[i].x < 0 || monitorWidth < p[i].x + w[i]){
			dire[i] = Math.PI - dire[i];
			p[i].bound(Math.PI / 2., 1.);
		}
		if(p[i].y < 0 || monitorHeight < p[i].y + h[i]){
			dire[i] = -dire[i];
			p[i].bound(0., 1.);
		}
	}
}

[mousePressed]{
	mouseP = true;
	pressX = mouseX;
	pressY = mouseY;
	sTime = new java.util.Date().getTime();
}

[mouseReleased]{
	eTime = new java.util.Date().getTime();
	releaseX = mouseX;
	releaseY = mouseY;
	if(cur < p.length - 1){
		cur += 1;
		if(monitorWidth < cureX)	cureX = monitorWidth;
		if(monitorHeight < cureY)	cureY = monitorHeight;
		p[cur].x = cursX;
		p[cur].y = cursY;
		w[cur] = cureX - cursX;
		h[cur] = cureY - cursY;
		velo[cur] = 100. *100. / (double)(eTime - sTime);
		dire[cur] = direction(pressX, pressY, releaseX, releaseY);
		ch[cur] = dire[cur] / (2 *Math.PI);
		cs[cur] = 1.0 -1.0 * 100. /(double)(eTime - sTime);
		if(1.0 < cs[cur])	cs[cur] = 1.0;
		if(cs[cur] < 0.)	cs[cur] = 0.;
		cb[cur] = 1.0 - 0.2 * distance(pressX, pressY, releaseX, releaseY) / ((double)monitorWidth * Math.sqrt(2.));
		if(1.0 < cb[cur])	cb[cur] = 1.0;
		if(cb[cur] < 0.)	cb[cur] = 0.;
	}
	mouseP = false;
}