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#include <windows.h>
#include <math.h>
#define M_PI 3.14159265358979323846
extern int (*warand)(void);
extern void line(unsigned char *fb, int X0, int Y0, int X1, int Y1, int w, int h);
static double sc_curtime;
static unsigned int sc_starttime;
static int __inline myftol(double d)
{
int a;
__asm
{
fld d
fistp a
mov eax, a
}
}
static void __doscope(int fx, int ipos, double i, double v, double &x, double &y, double &sc_tmp)
{
double r,d;
switch (fx)
{
case 0: x=2.0*(i-0.5); y=v*0.5; return;
case 1:
x=cos(i*M_PI*3.0+sc_curtime)*(0.5+v*0.2);
y=sin(i*M_PI*6.0+sc_curtime)*(0.5+v*0.2);
return;
case 2:
r=i*M_PI*128+sc_curtime;
x=cos(r/(64.0+32.0*cos(sc_curtime*M_PI)))*0.4+sin(r)*0.05;
y=sin(r/(64.0+32.0*cos(sc_curtime*M_PI)))*0.4+cos(r)*0.05;
return;
case 3:
r=M_PI*cos(sc_curtime*0.5)*2;
x=cos(r)*0.3+cos(i*M_PI*2)*v*0.5;
y=sin(r)*0.3+sin(i*M_PI*2)*v*0.5;
return;
case 4:
r=M_PI*cos(sc_curtime*0.5)*2;
x=cos(r)*0.3+cos(i*M_PI*2)*(1.0+v)*0.23;
y=sin(r*1.5)*0.3+sin(i*M_PI*2)*(1.0+v)*0.23;
return;
case 5:
y=2.0*(i-0.5);
x=v*0.5 + 0.4*cos(sc_curtime);
return;
case 6:
d=i+v*0.2;
r=sc_curtime+i*3.14159*4;
x=cos(r)*d*0.6;
y=sin(r)*d*0.6;
return;
case 7:
x=(i-0.5)*2.0;
y=0.25-0.5*fabs(sin(i*M_PI*4 + sc_curtime)) + v*0.2;
return;
case 8:
r=i*3.14159*2;
d=sin(r*3)+v*0.5;
x=cos(sc_curtime+r)*d;
y=sin(sc_curtime-r)*d;
return;
case 9:
x=2.0*(i-0.5);
y=v*v*v*0.7;
return;
case 10:
x=cos(i*8)*0.9*sin(sc_curtime);
y=sin(i*8)*0.5*v;
return;
case 11:
d=i-0.9;
sc_tmp=sc_tmp+v*0.1;
x=cos(sc_tmp)*d+sin(sc_tmp)*v+0.3;
y=sin(sc_tmp)*d-cos(sc_tmp)*v;
return;
case 12:
r=i*8;
x=cos(r)*0.3+sin(r*(3+cos(sc_curtime*0.5+i*3.0)))*0.2;
y=sin(r)*0.3+cos(r*(2+2*cos(sc_curtime*0.5+i*3.0)))*0.2;
return;
case 13:
x=v*0.3+sin(i*4*3.14159)*cos(sc_curtime)*0.4;
y=2.0*(i-0.5);
return;
case 14:
if (!(ipos&3)) x=y=0;
else
{
x=v;
y=(ipos&8)?1.0:-1.0;
if (ipos & 4)
{
sc_tmp=y;
y=x;
x=sc_tmp;
}
}
return;
case 15:
x=(ipos&1)?-1:1;
y=(ipos&30)?0:v;
return;
case 16:
r=ipos * 3.14159 * (0.3);
x=(0.3+v*0.1)*cos(r);
y=(0.3+v*0.1)*sin(r);
return;
}
}
//#define TEST_SCOPE 14
#define NUM_SC 17
static unsigned int start;
#define INTERVAL 5000
static int curfx[2]={0,NUM_SC},lastfx[2]={0,NUM_SC}, interval_l=INTERVAL;
static double fxblend, lastfxblend;
void drawscope(unsigned char *out, int w, int h, unsigned char *visdata)
{
double tmp1=0.0;
double tmp2=0.0;
double tmp3=0.0;
double tmp4=0.0;
int x;
int lx=0;
int ly=0;
double w2=w*65536.0/2.0;
double h2=h*65536.0/2.0;
if (!sc_starttime) sc_starttime=GetTickCount();
sc_curtime=(GetTickCount()-sc_curtime)/1000.0;
if (GetTickCount()>=start+INTERVAL)
{
lastfxblend=fxblend;
lastfx[0]=curfx[0];
lastfx[1]=curfx[1];
start=GetTickCount();
curfx[0]=warand()%NUM_SC;
curfx[1]=warand()%NUM_SC;
interval_l=2500+(warand()&8191);
if (interval_l > INTERVAL) interval_l=INTERVAL;
for (x = 0; x < 2; x ++)
if (curfx[x] == 14 || curfx[x] == 15) curfx[x]=warand()%NUM_SC;
fxblend=0.25+(warand()&511)/1023.0;
#ifdef TEST_SCOPE
curfx[0]=TEST_SCOPE;
lastfx[0]=curfx[0];
curfx[1]=NUM_SC;
lastfx[1]=NUM_SC;
fxblend=lastfxblend=0.0;
#endif
}
double weight=(double)(GetTickCount()-start)*(1.0/(double)(interval_l));
if (weight > 1.0) weight=1.0;
for (x = 0; x < 576; x ++)
{
int xp;
int yp;
double xof=0.0, yof=0.0;
double ix=x/576.0;
double iy=((visdata[x]^128)-128)/127.5;
__doscope(curfx[0],x,ix,iy,xof,yof,tmp1);
{
double xof2=0.0,yof2=0.0;
__doscope(curfx[1],x,ix,iy,xof2,yof2,tmp3);
xof=xof*(1.0-fxblend) + xof2*fxblend;
yof=yof*(1.0-fxblend) + yof2*fxblend;
}
{
double xof2=0.0, yof2=0.0;
__doscope(lastfx[0],x,ix,iy,xof2,yof2,tmp2);
{
double xof3=0.0,yof3=0.0;
__doscope(lastfx[1],x,ix,iy,xof3,yof3,tmp4);
xof2=xof2*(1.0-lastfxblend) + xof3*lastfxblend;
yof2=yof2*(1.0-lastfxblend) + yof3*lastfxblend;
}
xof=xof*weight + xof2*(1.0-weight);
yof=yof*weight + yof2*(1.0-weight);
}
xp = myftol(xof * w2 + w2);
yp = myftol(yof * h2 + h2);
if (x) line(out,lx,ly,xp,yp,w,h);
lx=xp;
ly=yp;
}
}
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