void
KbfxPlasmaCanvasItem::advance ( int phase )
{
if ( phase == 0 )
{
setXVelocity ( 0 );
setYVelocity ( yVelocity () * 1 - 0.001 );
}
else
{
move ( x () + xVelocity (), y () + yVelocity () );
}
}
QRect ossimQtVceShape::boundingRectAdvanced() const
{
int dx = int(x()+xVelocity())-int(x());
int dy = int(y()+yVelocity())-int(y());
QRect r = boundingVceShapeRect();
r.moveBy(dx,dy);
return r;
}
void Floater::advance(int phase)
{
if (!isEnabled())
return;
Bridge::advance(phase);
if (phase == 1 && (xVelocity() || yVelocity()))
{
if (Vector(origin, QPoint(x(), y())).magnitude() > vector.magnitude())
{
vector.setDirection(vector.direction() + M_PI);
origin = (origin == wall->startPoint()? wall->endPoint() : wall->startPoint());
setVelocity(-xVelocity(), -yVelocity());
}
}
}
void BouncyLogo::initPos()
{
initSpeed();
int trial=1000;
do {
move(rand()%canvas()->width(),rand()%canvas()->height());
advance(0); // 動畫不移動
} while (trial-- && xVelocity()==0.0 && yVelocity()==0.0); // trial不為0且x,y速度都為0
}
void BouncyLogo::advance(int stage)
{
switch ( stage ) {
case 0: {
double vx = xVelocity();
double vy = yVelocity();
if ( vx == 0.0 && vy == 0.0 ) {
// stopped last turn
initSpeed();
vx = xVelocity();
vy = yVelocity();
}
double nx = x() + vx;
double ny = y() + vy;
if ( nx < 0 || nx >= canvas()->width() )
vx = -vx; // 換反方向
if ( ny < 0 || ny >= canvas()->height() )
vy = -vy; // 換反方向
for (int bounce=0; bounce<4; bounce++) {
QCanvasItemList l=collisions(FALSE); // 沒有那麼精準的傳回所有有碰撞的canvas item
for (QCanvasItemList::Iterator it=l.begin(); it!=l.end(); ++it) {
QCanvasItem *hit = *it;
if ( hit->rtti()==logo_rtti && hit->collidesWith(this) ) {
switch ( bounce ) {
case 0:
vx = -vx;
break;
case 1:
vy = -vy;
vx = -vx;
break;
case 2:
vx = -vx;
break;
case 3:
// Stop for this turn
vx = 0;
vy = 0;
break;
}
setVelocity(vx,vy);
break;
}
}
}
if ( x()+vx < 0 || x()+vx >= canvas()->width() )
vx = 0;
if ( y()+vy < 0 || y()+vy >= canvas()->height() )
vy = 0;
setVelocity(vx,vy);
} break;
case 1:
QCanvasItem::advance(stage);
break;
}
}
int main(int argc, char *argv[]){
double time=0;
double xOld=0, yOld=0, v_xOld =0, v_yOld=0;
double xNew=0, yNew=0, v_xNew=0, v_yNew=0;
double K = 0.2; //k/m = constatnt K in code
double k_over_m = 0;
int count = 0, i=0;
FILE *outp;
h1 hist;
const double deltaT = 0.01;
outp = fopen("resist.dat", "w");
h1init(&hist, 700, 160., 490., "Distribution of Range with Varying Values of k/m");
h1labels(&hist, "Range in m", "Number of Occurences");
double angle = (pi/180)*atof(argv[1]);
double initVelocity = atof(argv[2]);
fprintf(outp, "# t x y v_x v_y\n");
fprintf(outp, "#--------------------\n");
v_xOld = initVelocity*cos(angle);
v_yOld = initVelocity*sin(angle);
while(yNew>=0){
v_xNew = xVelocity(v_xOld, deltaT, K);
v_yNew = yVelocity(v_yOld, deltaT, K);
xNew = position(xOld, v_xOld, deltaT);
yNew = position(yOld, v_yOld, deltaT);
time = deltaT*count;
fprintf(outp, "%lf %lf %lf %lf %lf\n", time, xNew, yNew, v_xNew, v_xOld);
count++;
v_xOld = v_xNew;
v_yOld = v_yNew;
xOld = xNew;
yOld = yNew;
}
for(i=0; i<10000; i++){
k_over_m = randu(0.1, 0.4);
v_xOld = initVelocity*cos(angle);
v_yOld = initVelocity*sin(angle);
while(yNew>=0){
v_xNew = xVelocity(v_xOld, deltaT, k_over_m);
v_yNew = yVelocity(v_yOld, deltaT, k_over_m);
xNew = position(xOld, v_xOld, deltaT);
yNew = position(yOld, v_yOld, deltaT);
v_xOld = v_xNew;
v_yOld = v_yNew;
xOld = xNew;
yOld = yNew;
}
h1fill(&hist, xOld, 1.0);
xNew =0;
xOld=0;
yNew = 1e-8;
yOld = 1e-8;
}
h1plot(&hist, "");
h1plot(&hist, "resist.pdf");
fclose(outp);
return 0;
}