int spi_hello_test(int iteration)
{
int i, j, xv, sz;
struct spi_comm_packet *cmd = (struct spi_comm_packet *)out_msg;
const struct spi_comm_packet *resp;
for (i = 0; i < iteration; ++i) {
xv = myrnd() & 0xff;
cmd->cmd_sts = TS_CMD_HELLO;
sz = myrnd() % (sizeof(out_msg) - 10) + 1;
cmd->size = sz + 2;
cmd->data[0] = sz;
cmd->data[1] = xv;
for (j = 0; j < sz; ++j)
cmd->data[j + 2] = myrnd() & 0xff;
if (spi_master_send_command(cmd))
return EC_ERROR_UNKNOWN;
resp = spi_master_wait_response();
if (resp == NULL || resp->size != sz)
return EC_ERROR_UNKNOWN;
for (j = 0; j < sz; ++j)
if (cmd->data[j + 2] != resp->data[j])
return EC_ERROR_UNKNOWN;
resp = spi_master_wait_response();
if (resp == NULL || resp->size != sz)
return EC_ERROR_UNKNOWN;
for (j = 0; j < sz; ++j)
if ((cmd->data[j + 2] ^ xv) != resp->data[j])
return EC_ERROR_UNKNOWN;
}
return EC_SUCCESS;
}
void main() {
Map2d<short> *from=new Map2d<short>(scrwid,scrhei);
JBmp *to=new JBmp(scrwid,scrhei);
randomise();
allegrosetup(320,200);
for (int i=0;i<256;i++) {
mypalette(i,myRGB::hue((float)i/256));
}
for (int x=0;x<scrwid;x++)
for (int y=0;y<scrhei;y++) {
from->pos[x][y]=intrnd(-60,60);
}
to->bmp[0][0]=myrnd()*256;
to->bmp[0][scrwid-1]=myrnd()*256;
to->bmp[scrhei-1][0]=myrnd()*256;
to->bmp[scrhei-1][scrwid-1]=myrnd()*256;
do {
make(to,from,0,0,scrwid-1,scrhei-1);
to->display();
for (int x=0;x<scrwid;x++)
for (int y=0;y<scrhei;y++) {
from->pos[x][y]+=intrnd(-5,5);
}
} while (!key[KEY_ESC]);
}
Wave() {
f=intrnd(1,15);
line=V3d::random();
if (planar)
line.y=0;
o=myrnd()*2.0*pi;
a=myrnd()*3.0;
}
void newripple(int i) {
ripples[i].st=mytime;
ripples[i].x=myrnd()*scrwid;
ripples[i].y=myrnd()*scrhei;
ripples[i].w=50+myrnd()*150;
ripples[i].v=1+myrnd()*4;
ripples[i].n=2+myrnd()*7;
// printf("%f\n",myrnd());
}
Wave() {
int k=intrnd(1,5);
Wave(k,V3d::random(),myrnd()*2.0*pi,myrnd()*0.2);
f=intrnd(1,5);
line=V3d::random();
o=myrnd()*2.0*pi;
a=myrnd()*3.0;
}
Wave() {
int k=intrnd(1,40);
Wave(k,V3d::random(),myrnd()*2.0*pi,myrnd()*0.1);
f=intrnd(1,10);
line=V3d::random();
o=myrnd()*2.0*pi;
a=myrnd()*7.0;
}
int main() {
List<V3d> l;
List<float> m;
allegrosetup(scrwid,scrhei);
makepalette(&greypalette);
// List<V3d> l(5);
for (int i=1; i<=numps; i++) {
V3d r=sqrt(myrnd())*(V3d::random());
l.add(r);
m.add(r.mod());
}
JBmp j=JBmp(scrwid,scrhei);
int time=0;
while (!key[KEY_ESC]) {
time++;
V3d rotaxis=V3d::rotate(V3d(0,1,0),V3d(1,0,0),time*pi/500);
V3d rotaxis2=V3d::rotate(V3d(0,1,0),V3d(1,0,0),time*pi/500);
j.clear();
for (int i=1; i<=l.length(); i++) {
// V3d t=(V3d)(l.num(i));
// t.changeto(V3d::rotate(t,rotaxis,pi/40));
// l.replace(i,t);
V3d v=(V3d)(l.num(i));
V3d t=(V3d::rotate((V3d::rotate(v,V3d(1,0,0),pi/700*time)),V3d(0,1,0),pi/40*time));
j.setpixel(scrwid/2+scrhei/2*t.x,scrhei/2*(1+t.y),127*(1-t.z));
}
j.writetoscreen();
}
}
int lifefrom(int x,int y) {
int c=countneighbourschecking(x,y)/8;
if (c==0)
return myrnd()*255;
if (c>255-crowded || c<lonely)
return 0;
return c;
}
Stripey() {
Radial::Radial();
pos=V2d(floatrnd(0,scrwid),floatrnd(0,scrhei));
vel=V2d::o;
// rad=floatrnd(20,40);
radvel=0;
ang=myrnd(2*pi);
angvel=0;
}
void plotsomeshapes() {
for (int i=0;i<2;i++)
if (myrnd()<0.4) {
V2d cen=V2d((float)scrwid*myrnd(),(float)scrhei*myrnd());
V2d dir=V2d::random();
V2d a=cen-dir*(scrwid);
V2d b=cen+dir*(scrwid);
// img.line(a.x,a.y,b.x,b.y,255);
img.thickline(a.x,a.y,b.x,b.y,1,255);
// float oth=sqrt(myrnd())*5.0;
// V2d perp=oth*dir.perp();
// img.filltri((a-perp).x,(a-perp).y,(a+perp).x,(a+perp).y,b.x,b.y,myrnd()*255);
// img.line(a.x,a.y,b.x,b.y,255);
}
}
void main() {
JBmp *j=new JBmp(scrwid,scrhei);
JBmp *k=new JBmp(scrwid,scrhei);
JBmp *tmp;
short *change=new short[cs];
srand((int)time(NULL));
for (int i=0;i<cs;i++) {
change[i]=(i/ss/ss/ss/ss)%ss;
if (myrnd()>.8)
change[i]=(change[i]-1+ss)%ss;
// change[i]=myrnd()*ss;
}
for (int x=0;x<scrwid;x++)
for (int y=0;y<scrhei;y++) {
j->bmp[y][x]=myrnd()*ss;
// j->bmp[y][x]=0;
}
allegrosetup(320,200);
for (int i=0;i<ss;i++) {
// mypalette(i,myrnd(),myrnd(),myrnd());
mypalette(i,(float)i/ss,(float)i/ss,(float)i/ss);
// mypalette(i,myRGB::hue((float)i/ss));
}
do {
j->writetoscreen();
tmp=k;
k=j;
j=tmp;
for (int x=0;x<scrwid;x++)
for (int y=0;y<scrhei;y++) {
// Collect neighbours
int c=0;
int n=0;
for (int dx=-1;dx<=1;dx++)
for (int dy=-1;dy<=1;dy++) {
n=n+pow(ss,c)*k->pointat(x+dx,y+dy);
c++;
}
j->bmp[y][x]=change[n];
}
} while (!key[KEY_ESC]);
}
void mycircle(int cx,int cy,int r,int c) {
int x,h,y,px,py;
for (x=-r;x<=r;x++) {
h=sqrt(mysquare(r)-mysquare(x));
for (y=-h;y<=h;y++) {
px=cx+x; py=cy+y;
if (px>=0 && px<scrwid && py>=0 && py<scrhei)
img[py][px]=myrnd()*256;
}
}
}
void newpart(Part *p) {
p->pos=V3d(magrnd(1),magrnd(1),1);
p->rad=0.02+myrnd(0.04);
p->sgn=plusminus();
if (p->sgn>0) {
p->inc=127;
p->outc=63;
} else {
p->inc=255;
p->outc=128+63;
}
}
int main(int argc,String *argv) {
Jargsetup(argc,argv);
String fname=Jgetargafter("-o","noise.bmp");
int width,height;
sscanf(Jgetargafter("-w","320"),"%i",&width);
sscanf(Jgetargafter("-h","200"),"%i",&height);
Map2d<int> *n=new Map2d<int>(width,height);
for (int i=0;i<n->width;i++)
for (int j=0;j<=n->height;j++)
n->pos[i][j]=myrnd()*255;
n->writefile(fname);
printf(Sformat("noise: written file %s w %i h %i\n",fname,width,height));
}
void main() {
RGBmp *j=new RGBmp(scrwid,scrhei);
RGBmp *k=new RGBmp(scrwid,scrhei);
randomise();
// setcolordepth(16);
// allegrosetup(320,200);
for (int x=0;x<scrwid;x++)
for (int y=0;y<scrhei;y++) {
j->bmp[y][x]=myRGB(myrnd(),myrnd(),myrnd());
}
do {
k->bmp[0][0]=j->bmp[0][0];
k->bmp[0][scrwid-1]=j->bmp[0][scrwid-1];
k->bmp[scrhei-1][0]=j->bmp[scrhei-1][0];
k->bmp[scrhei-1][scrwid-1]=j->bmp[scrhei-1][scrwid-1];
make(k,j,0,0,scrwid-1,scrhei-1);
k->display();
for (int x=0;x<scrwid;x++)
for (int y=0;y<scrhei;y++) {
}
} while (!key[KEY_ESC]);
}
void main(int argc,String *argv) {
ArgParser a=ArgParser(argc,argv);
int w=a.intafter("-w","width",275);
int h=a.intafter("-h","height",116);
int numpts=a.intafter("-n","number of points",100);
a.done();
FILE *file=fopen("region.txt","wa");
fprintf(file,"[Normal]\n");
fprintf(file,"Numpoints=%i\n",numpts);
V2d cen=V2d((float)w/2.0,(float)h/2.0);
for (int i=0;i<numpts;i++) {
V2d a=10.0*(w+h)*V2d::angle(-pi/4.0+2.0*pi*(float)i/(float)numpts);
a=a+cen;
if (a.x<0)
a=Line2d(cen,a).intersect(Line2d(V2d(0,0),V2d(0,1)));
if (a.y<0)
a=Line2d(cen,a).intersect(Line2d(V2d(0,0),V2d(1,0)));
if (a.x>w)
a=Line2d(cen,a).intersect(Line2d(V2d(w,0),V2d(w,1)));
if (a.y>h)
a=Line2d(cen,a).intersect(Line2d(V2d(0,h),V2d(1,h)));
a=a-cen;
float rnd=myrnd();
a=a*rnd;
a=a+cen;
fprintf(file,"%i,%i",(int)a.x,(int)a.y);
if (i<numpts-1)
fprintf(file,", ");
}
fprintf(file,"\n");
fclose(file);
}
/* Turns a forcefield on, and ensures its vars are suitable. */
static void turn_on_field(struct state *st, int ff)
{
if (!st->fon[ff]) {
/* acc[ff]=0.0; */
st->acc[ff]=0.02 * myrnd();
st->vel[ff]=0.0;
st->var[ff]=st->op[ff];
}
st->fon[ff] = 1;
if (ff == 10) {
turn_on_field(st, 11);
turn_on_field(st, 12);
}
if (ff == 13) {
turn_on_field(st, 14);
turn_on_field(st, 15);
}
}
void newparts(List<Part> *l) {
V3d a=V3d(magrnd(1),magrnd(1),1+magrnd(2));
V3d b=a+V3d(magrnd(1),magrnd(1),magrnd(0.4));;
float sgn=plusminus();
float rad=0.005+myrnd(0.01);
for (int i=1;i<=line;i++) {
Part p;
float thru=(float)(i-1)/(line-1);
p.pos=a+thru*(b-a);
p.rad=rad;
p.sgn=sgn;
if (p.sgn>0) {
p.inc=127;
p.outc=63;
} else {
p.inc=255;
p.outc=128+63;
}
l->add(p);
}
}
void movepart(int i) {
int j;
//xor_mode(0);
if (plotpart(i,0)==0 || part[i].pos.z<znear || part[i].pos.z>zfar)
newpart(i);
// Brownian motion
if (myrnd()<pbrownian) {
part[i].vel.x=part[i].vel.x+floatrnd(-brownian,brownian);
part[i].vel.y=part[i].vel.y+floatrnd(-brownian,brownian);
part[i].vel.z=part[i].vel.z+floatrnd(-brownian,brownian);
}
if (part[i].gwell<0.5) {
// Pulled by gravity wells
for (j=0;j<gwells;j++) {
// Gravity well j affects particle i
if (gwell[j]!=i)
part[i].vel=V3dadd(part[i].vel,V3dmult(part[gwell[j]].gwell/(V3ddist(part[gwell[j]].pos,part[i].pos)+1)*gwellstr,V3dnorm(V3dsub(part[gwell[j]].pos,part[i].pos))));
}
} else {
// Warping towards user
part[i].vel.z=part[i].vel.z-warpvel;
}
// Damping
part[i].vel=V3dmult(dampening,part[i].vel);
// Movement
part[i].pos=V3dadd(part[i].pos,part[i].vel);
/* Bouncing off the walls
if (myabs(part[i].pos.x)>1)
part[i].vel.x=-part[i].vel.x;
if (myabs(part[i].pos.y)>1)
part[i].vel.y=-part[i].vel.y;
if (myabs(part[i].pos.z)>1)
part[i].vel.z=-part[i].vel.z;*/
//xor_mode(1);
plotpart(i,255);
}
void newpart(int i) {
float x,y;
int j;
//part[i].pos=(V3d)newV3d(floatrnd(-1,1),floatrnd(-1,1),floatrnd(znear,zfar));
x=floatrnd(-1,1); y=floatrnd(-1,1);
part[i].pos.z=floatrnd(zcreatenear,zfar);
// scrx/pd=x/z
part[i].pos.x=part[i].pos.z*x/planedist;
part[i].pos.y=part[i].pos.z*y/planedist;
part[i].vel=newV3d(0,0,0);
if (myrnd()<pgwell) {
part[i].gwell=floatrnd(1,3);
gwell[gwells]=i; gwells++;
} else {
// Ensure not in the gwell list
for (j=0;j<gwells;j++) {
if (gwell[j]==i) {
gwell[j]=gwell[gwells];
gwells--;
}
}
part[i].gwell=0;
}
}
void stars_newp(int p) {
cx[p]=myrnd();
cy[p]=myrnd();
}
static void do_twinkle(Display *dpy, Window window) {
Colormap cmap;
XWindowAttributes xgwa;
int got_color = 0;
XColor color[maxps];
XColor bgcolor;
int p,f,nt, sx,sy, resets,lastresets,cnt;
XClearWindow (dpy, window);
XGetWindowAttributes (dpy, window, &xgwa);
cmap = xgwa.colormap;
scrwid = xgwa.width;
scrhei = xgwa.height;
/* Setup colours */
hsv_to_rgb (0.0, 0.0, 0.0, &bgcolor.red, &bgcolor.green, &bgcolor.blue);
got_color = XAllocColor (dpy, cmap, &bgcolor);
for (p=0;p<ps;p++) {
if (!mono_p)
hsv_to_rgb (random()%360, .6+.4*myrnd(), .6+.4*myrnd(), &color[p].red, &color[p].green, &color[p].blue);
/* hsv_to_rgb (random()%360, 1.0, 1.0, &color[p].red, &color[p].green, &color[p].blue); for stronger colours! */
if ((!mono_p) && (got_color = XAllocColor (dpy, cmap, &color[p]))) {
} else {
if (p>0)
color[p]=color[0];
else
color[p].pixel=default_fg_pixel;
}
}
/* Set up parameter movements for the different forcefields */
name[1] = "Velocity";
op[1] = 1; damp[1] = .999; force[1] = .002;
name[2] = "Rotation";
op[2] = 0; damp[2] = .999; force[2] = .002;
name[3] = "Drip";
op[3] = 1; damp[3] = .999; force[3] = .005;
name[4] = "Dribble";
op[4] = 1; damp[4] = .999; force[4] = .005;
name[5] = "Slide";
op[5] = 0; damp[5] = .999; force[5] = .002;
name[6] = "Accelerate";
op[6] = 1.0; damp[6] = .999; force[6] = .005;
name[7] = "xDisplace";
op[7] = 0; damp[7] = .999; force[7] = .005;
name[8] = "yDisplace";
op[8] = 0; damp[8] = .999; force[8] = .005;
/* 0 and 9 are options for splitting displacements [no var] */
name[0] = "Split";
op[0] = 0; damp[0] = 0; force[0] = 0;
name[9] = "2d/3d split";
op[9] = 0; damp[9] = 0; force[9] = 0;
/* Initialise parameters to optimum, all off */
for (f=0;f<fs;f++) {
var[f]=op[f];
fon[f]=0;
}
/* Initialise stars */
for (p=0;p<ps;p++)
stars_newp(p);
/* tx[nt],ty[nt] remeber earlier screen plots (tails of stars)
which are deleted when nt comes round again */
nt=0;
resets=0;
while (1) {
/* Move current points */
lastresets=resets;
resets=0;
for (p=0;p<ps;p++) {
/* Erase old */
XSetForeground (dpy, draw_gc, bgcolor.pixel);
XDrawPoint(dpy,window,draw_gc,tx[nt],ty[nt]);
/* Move */
stars_move(p);
/* If moved off screen, create a new one */
if (cx[p]<-1.0 || cx[p]>+1.0 ||
cy[p]<-1.0 || cy[p]>+1.0 ||
fabs(cx[p])<.001 || fabs(cy[p])<.001) {
stars_newp(p);
resets++;
} else if (myrnd()>0.99) /* Reset at random */
stars_newp(p);
/* Draw point */
sx=stars_scrpos_x(p);
sy=stars_scrpos_y(p);
XSetForeground (dpy, draw_gc, color[p].pixel);
XDrawPoint(dpy,window,draw_gc,sx,sy);
/* Remember it for removal later */
tx[nt]=sx;
ty[nt]=sy;
nt=(nt+1)%(ps*ts);
}
/* Adjust force fields */
cnt=0;
for (f=0;f<fs;f++) {
if (meters) { /* Remove meter from display */
XSetForeground(dpy, draw_gc, bgcolor.pixel);
stars_draw_meter(dpy,window,draw_gc,f);
}
/* Adjust forcefield's parameter */
var[f]=stars_perturb(var[f],op[f],damp[f],force[f]);
if (myrnd()>0.998) /* Turn it on/off ? */
fon[f]=(myrnd()<0.0);
/* fon[f]=!fon[f]; */
if (meters) { /* Redraw the meter */
XSetForeground(dpy, draw_gc, color[f].pixel);
stars_draw_meter(dpy,window,draw_gc,f);
}
if (fon[f])
cnt++;
}
if (cnt==0) { /* Ensure at least one is on! */
f=random() % fs;
fon[f]=1;
}
if (meters) {
XSetForeground(dpy, draw_gc, bgcolor.pixel);
XDrawRectangle(dpy,window,draw_gc,0,0,lastresets*5,3);
XSetForeground(dpy, draw_gc, default_fg_pixel);
XDrawRectangle(dpy,window,draw_gc,0,0,resets*5,3);
}
/* if (resets*5>scrwid) {
Turn one off a field if too many points are flying off screen */
/* This was a problem when one of the force-fields was acting wrong,
but not really needed any more unless we need to debug new ones ...! */
/* for (f=0;f<fs;f++)
if (fon[f])
printf("%i",f);
printf("\n");
XSync (dpy, False);
screenhack_handle_events (dpy);
sleep(1);
do { // In fact this bit might go wrong if
f=random() % fs; // we have not ensured at least one is on (above)
} while (!fon[f]);
fon[f]=0;
} */
XSync (dpy, False);
screenhack_handle_events (dpy);
}
}
/* Adjust a variable var about optimum op,
with damp = dampening about op
force = force of random perturbation */
float stars_perturb(float var,float op,float damp,float force) {
var=op+damp*(var-op)+force*myrnd()/4.0;
/* if (fabs(var-op)>0.1) // (to keep within bounds)
var=op+0.1*mysgn(var-op);*/
return var;
}
void newpart(Part *p) {
p->pos=V3d(magrnd(1),magrnd(1),1);
p->rad=0.02+myrnd(0.04);
p->c=16;
p->sgn=plusminus();
}
void main(void) {
int i,j,k,c,x,y;
RGB rgb;
srand((int)time(NULL));
for (x=0;x<scrwid;x++) {
for (y=0;y<scrhei;y++) {
rx=(float)x/scrwid*2-1;
ry=(float)(y-scrhei/2)/scrwid*2;
px=(qx+1)/2*scrwid;
py=scrhei/2+(qy)/2*scrwid;
ix=(int)px;
iy=(int)py;
amount[x][y][0][0]=((float)ix+1-(float)px)*((float)(iy+1)-(float)py);
amount[x][y][1][0]=((float)px-(float)ix)*((float)(iy+1)-(float)py);
amount[x][y][0][1]=((float)ix+1-(float)px)*((float)py-(float)iy);
amount[x][y][1][1]=((float)px-(float)ix)*((float)py-(float)iy);
pix[x][y]=ix;
piy[x][y]=iy;
}
}
allegro_init ();
install_keyboard ();
install_timer ();
set_gfx_mode (GFX_AUTODETECT, scrwid, scrhei, 0, 0);
set_pallete (desktop_palette);
_farsetsel(screen->seg);
for (c=0;c<=255;c++) {
if (c<128) {
rgb.r=c*63/127;
rgb.g=0;
rgb.b=0;
} else {
rgb.r=127;
rgb.g=(c-128)*63/127;
rgb.b=rgb.g;
}
set_color(c,&rgb);
}
while(!key[KEY_ESC]) {
for (y=0; y<scrhei; y++) {
movedata(screen->seg, bmp_read_line(screen,y), _my_ds(), map[y], scrwid);
}
for (x=0; x<scrwid; x++) {
for (y=0; y<scrhei; y++) {
c=0;
for (i=0;i<=1;i++) {
for (j=0;j<=1;j++) {
c=c+amount[x][y][i][j]*map[piy[x][y]+j][pix[x][y]+i];
}
}
c--;
map2[y][x]=c;
}
}
for (y=0; y<scrhei; y++) {
movedata(_my_ds(), map2[y], screen->seg, bmp_write_line(screen,y), scrwid);
}
for (i=1;i<=10;i++) {
circlefill(screen,myrnd()*scrwid,myrnd()*scrhei,8,myrnd()*255);
}
}
}
void main(void) {
int xy,i,j,c,x,y,front,back,n,minc,maxc;
int ix,iy,k,address,jx,jy,kx,ky;
float dzdx,dzdy,a,b,dot,norm;
float rx,ry,sx,sy,px,py;
long p,q;
RGB rgb;
for (x=0;x<scrwid;x++) {
for (y=0;y<scrhei;y++) {
rx=(float)x/scrwid*2-1;
ry=(float)y/scrhei*2-1;
sx=rx*.8;
sy=ry*.8;
px=(sx+1)/2*scrwid;
py=(sy+1)/2*scrhei;
ix=(int)px;
iy=(int)py;
amount[x][y][0][0]=((float)ix+1-(float)px)*((float)(iy+1)-(float)py);
amount[x][y][1][0]=((float)px-(float)ix)*((float)(iy+1)-(float)py);
amount[x][y][0][1]=((float)ix+1-(float)px)*((float)py-(float)iy);
amount[x][y][1][1]=((float)px-(float)ix)*((float)py-(float)iy);
pix[x][y]=ix;
piy[x][y]=iy;
// printf("%f",amount[x][y][0][0]+amount[x][y][1][0]+amount[x][y][0][1]+amount[x][y][1][1]);
if (mysquare(amount[x][y][0][0]+amount[x][y][1][0]+amount[x][y][0][1]+amount[x][y][1][1]-1)>0.00001) {
printf("%d %d %f %f ",ix,iy,px,py);
printf("%f+%f(%f*%f)+%f+%f=%f? \n",amount[x][y][0][0],amount[x][y][1][0],(float)px-(float)ix,(float)(iy+1)-(float)py,amount[x][y][0][1],amount[x][y][1][1],amount[x][y][0][0]+amount[x][y][1][0]+amount[x][y][0][1]+amount[x][y][1][1]);
}
}
}
// srand(456789);
srand((int)time(NULL));
//printf("%d\n",(int)time(NULL));
allegro_init ();
install_keyboard ();
install_timer ();
set_gfx_mode (GFX_AUTODETECT, scrwid, scrhei, 0, 0);
set_pallete (desktop_palette);
buffer = create_bitmap (scrwid, scrhei);
clear (buffer);
// textout_centre (buffer, font, "Press SPACE!", 60, 220, 4);
// Set up grayscale colours
for (c=0;c<=255;c++) {
i=0;
rgb.r=c*63/255;
rgb.g=0;
rgb.b=0;
set_color(c,&rgb);
// colors[c]=GrAllocColor(c,i,i);
}
for (x=0; x<scrwid; x++) {
for (y=0; y<scrhei; y++) {
putpixel(buffer,x,y,128);
}
}
blit (buffer, screen, 0, 0, 0, 0, scrwid, scrhei);
_farsetsel(screen->seg);
while(!key[KEY_ESC]) {
for (y=0; y<scrhei; y++) {
movedata(screen->seg, bmp_read_line(screen,y), _my_ds(), tmp[y], scrwid);
}
for (x=0; x<scrwid; x++) {
for (y=0; y<scrhei; y++) {
c=0;
kx=x-scrwid/2;
ky=y-scrhei/2;
jx=kx*cos(ang)+ky*sin(ang);
jy=-kx*sin(ang)+ky*cos(ang);
ix=scrwid/2+0.9*jx;
iy=scrhei/2+0.9*jy;
k=0;
i=0;j=0;
// for (i=-1;i<=1;i++) {
// for (j=-1;j<=1;j++) {
// c=c+getpixel(screen, ix+i, iy+j);
// address = bmp_read_line(screen, iy)+ix;
c=c+tmp[iy][ix];
k++;
// }
// }
c=c/k;
c--;
// address = bmp_write_line(buffer, y)+x;
// _farnspokeb(address, c);
tmp2[y][x]=c;
// putpixel(buffer, x, y, c);
}
}
for (y=0; y<scrhei; y++) {
movedata(_my_ds(), tmp2[y], screen->seg, bmp_write_line(screen,y), scrwid);
}
for (i=1;i<=10;i++)
circlefill(screen,myrnd()*scrwid,myrnd()*scrhei,8,myrnd()*255);
// putpixel(buffer,scrwid/2,scrhei/2,255);
// blit (buffer, screen, 0, 0, 0, 0, scrwid, scrhei);
}
destroy_bitmap(buffer);
exit(0);
getch();
// GrSetMode(GR_default_text);
printf("max col %d\n",maxc);
printf("min col %d\n",minc);
}
float classifyrnd(List<Pixel> *ps) {
return myrnd();
}
void main() {
int scrwid=320; int scrhei=200;
int jump=10;
allegrosetup(scrwid,scrhei);
makepalette(&greypalette);
List<S> xs=List<S>();
List<S> ys=List<S>();
List<S> xvs=List<S>();
List<S> yvs=List<S>();
randomise();
for (int i=0;i<12;i++) {
S s=S(myrnd()*scrwid,(1.0+myrnd()*4.0)*pi/(float)scrwid,myrnd()*1.0);
S v=S(0,0,0);
if (i%2) {
xs+s;
xvs+v;
} else {
ys+s;
yvs+v;
}
}
JBmp j=JBmp(scrwid,scrhei);
do {
for (int x=0;x<scrwid;x+=jump)
for (int y=0;y<scrhei;y+=jump) {
float sum=0;
for (int i=1;i<=xs.len;i++) {
S s=xs.num(i);
sum+=s.amp*sin(s.off+s.fre*x);
}
for (int i=1;i<=ys.len;i++) {
S s=ys.num(i);
sum+=s.amp*sin(s.off+s.fre*y);
}
sum=3.0*sum/(float)(xs.len+ys.len);
int se=ucharchop(128+128*sum);
j.bmp[y][x]=se;
if (x>0 && y>0) {
int nw=j.bmp[y-jump][x-jump];
int ne=j.bmp[y-jump][x];
int sw=j.bmp[y][x-jump];
for (int i=0;i<=jump;i++)
for (int k=0;k<=jump;k++) {
float a=(float)i/(float)jump;
float na=1.0-a;
float b=(float)k/(float)jump;
float nb=1.0-b;
j.bmp[y-jump+k][x-jump+i]=na*nb*nw+a*nb*ne+na*b*sw+a*b*se;
}
}
}
j.writetoscreen();
for (int i=1;i<=xs.len;i++) {
xvs.p2num(i)->off+=magrnd(pi/128);
xvs.p2num(i)->fre+=magrnd(pi/(float)10/(float)scrwid);
xvs.p2num(i)->amp+=magrnd(0.005);
xs.p2num(i)->add(xvs.num(i));
}
for (int i=1;i<=ys.len;i++) {
yvs.p2num(i)->off+=magrnd(pi/128);
yvs.p2num(i)->fre+=magrnd(pi/(float)10/(float)scrwid);
yvs.p2num(i)->amp+=magrnd(0.005);
ys.p2num(i)->add(yvs.num(i));
}
} while (!key[KEY_ESC]);
}
void main(void) {
int xy,i,j,c,x,y,front,back,n,minc,maxc;
int ix,iy;
float dzdx,dzdy,a,b,dot,norm,tmp;
float rx,ry,sx,sy,px,py;
long p,q;
RGB rgb;
for (x=0;x<scrwid;x++) {
for (y=0;y<scrhei;y++) {
rx=(float)x/scrwid*2-1;
ry=(float)y/scrhei*2-1;
sx=rx*.99;
sy=ry*.99;
px=(sx+1)/2*scrwid;
py=(sy+1)/2*scrhei;
ix=(int)px;
iy=(int)py;
amount[x][y][0][0]=((float)ix+1-px)*((float)iy+1-py);
amount[x][y][1][0]=(px-(float)ix)*((float)iy+1-py);
amount[x][y][0][1]=((float)ix+1-px)*(py-(float)iy);
amount[x][y][1][1]=(px-(float)ix)*(py-(float)iy);
pix[x][y]=ix;
piy[x][y]=iy;
printf("%d %d %f %f ",x,y,px,py);
printf("%f=1? \n",amount[x][y][0][0]+amount[x][y][1][0]+amount[x][y][0][1]+amount[x][y][1][1]);
}
}
// srand(456789);
srand((int)time(NULL));
//printf("%d\n",(int)time(NULL));
allegro_init ();
install_keyboard ();
install_timer ();
set_gfx_mode (GFX_AUTODETECT, scrwid, scrhei, 0, 0);
set_pallete (desktop_palette);
buffer = create_bitmap (scrwid, scrhei);
clear (buffer);
// textout_centre (buffer, font, "Press SPACE!", 60, 220, 4);
blit (buffer, screen, 0, 0, 0, 0, scrwid, scrhei);
// Set up grayscale colours
for (c=0;c<=255;c++) {
i=0;
rgb.r=c*63/255;
rgb.g=0;
rgb.b=0;
set_color(c,&rgb);
// colors[c]=GrAllocColor(c,i,i);
}
while(!key[KEY_ESC]) {
for (x=0; x<scrwid; x=x+res) {
for (y=0; y<scrhei; y=y+res) {
c=0;
for (i=0;i<1;i++) {
for (j=0;j<1;j++) {
c=c+getpixel(buffer, pix[x][y]+i, piy[x][y]+j)*amount[x][y][i][j];
}
}
putpixel(buffer, x, y, c);
}
}
putpixel(buffer,myrnd()*scrwid,myrnd()*scrhei,myrnd()*255);
blit (buffer, screen, 0, 0, 0, 0, scrwid, scrhei);
}
destroy_bitmap(buffer);
exit(0);
getch();
// GrSetMode(GR_default_text);
printf("max col %d\n",maxc);
printf("min col %d\n",minc);
}
bool boolrnd() {
return (myrnd()>0.5);
}