ENTRYPOINT void
release_strange(ModeInfo * mi)
{
if (Root != NULL) {
int screen;
for (screen = 0; screen < MI_NUM_SCREENS(mi); ++screen)
free_strange(MI_DISPLAY(mi), &Root[screen]);
(void) free((void *) Root);
Root = (ATTRACTOR *) NULL;
}
}
ENTRYPOINT void
release_strange(ModeInfo * mi)
{
if (Root != NULL) {
int screen;
#ifdef useAccumulator
int i;
(void) free((void *) cols);
for (i=0;i<Root->Width;i++) {
(void) free((void *) Root->accMap[i]);
}
(void) free((void *) Root->accMap);
#endif
#ifdef POINTS_HISTORY
free(oldPointsX);
free(oldPointsY);
#endif
for (screen = 0; screen < MI_NUM_SCREENS(mi); ++screen)
free_strange(MI_DISPLAY(mi), &Root[screen]);
(void) free((void *) Root);
Root = (ATTRACTOR *) NULL;
}
}
ENTRYPOINT void
init_strange(ModeInfo * mi)
{
Display *display = MI_DISPLAY(mi);
#ifndef NO_DBUF
Window window = MI_WINDOW(mi);
GC gc = MI_GC(mi);
#endif
ATTRACTOR *Attractor;
if (Root == NULL) {
if ((Root = (ATTRACTOR *) calloc(MI_NUM_SCREENS(mi),
sizeof (ATTRACTOR))) == NULL)
return;
}
Attractor = &Root[MI_SCREEN(mi)];
if (Attractor->Fold == NULL) {
int i;
if ((Attractor->Fold = (PRM *) calloc(UNIT2 + 1,
sizeof (PRM))) == NULL) {
free_strange(display, Attractor);
return;
}
for (i = 0; i <= UNIT2; ++i) {
DBL x;
/* x = ( DBL )(i)/UNIT2; */
/* x = sin( M_PI/2.0*x ); */
/* x = sqrt( x ); */
/* x = x*x; */
/* x = x*(1.0-x)*4.0; */
x = (DBL) (i) / UNIT;
x = sin(x);
Attractor->Fold[i] = DBL_To_PRM(x);
}
}
if (Attractor->Buffer1 == NULL)
if ((Attractor->Buffer1 = (XPoint *) calloc(MAX_POINTS,
sizeof (XPoint))) == NULL) {
free_strange(display, Attractor);
return;
}
if (Attractor->Buffer2 == NULL)
if ((Attractor->Buffer2 = (XPoint *) calloc(MAX_POINTS,
sizeof (XPoint))) == NULL) {
free_strange(display, Attractor);
return;
}
Attractor->Max_Pt = MAX_POINTS;
Attractor->Width = MI_WIDTH(mi);
Attractor->Height = MI_HEIGHT(mi);
Attractor->Cur_Pt = 0;
Attractor->Count = 0;
Attractor->Col = NRAND(MI_NPIXELS(mi));
Attractor->Speed = 4;
Attractor->Iterate = Funcs[NRAND(2)];
Random_Prm(Attractor->Prm1);
Random_Prm(Attractor->Prm2);
#ifndef NO_DBUF
if (Attractor->dbuf != None)
XFreePixmap(display, Attractor->dbuf);
Attractor->dbuf = XCreatePixmap(display, window,
Attractor->Width, Attractor->Height, 1);
/* Allocation checked */
if (Attractor->dbuf != None) {
XGCValues gcv;
gcv.foreground = 0;
gcv.background = 0;
#ifndef HAVE_COCOA
gcv.graphics_exposures = False;
#endif /* HAVE_COCOA */
gcv.function = GXcopy;
if (Attractor->dbuf_gc != None)
XFreeGC(display, Attractor->dbuf_gc);
if ((Attractor->dbuf_gc = XCreateGC(display, Attractor->dbuf,
#ifndef HAVE_COCOA
GCGraphicsExposures |
#endif /* HAVE_COCOA */
GCFunction | GCForeground | GCBackground,
&gcv)) == None) {
XFreePixmap(display, Attractor->dbuf);
Attractor->dbuf = None;
} else {
XFillRectangle(display, Attractor->dbuf, Attractor->dbuf_gc,
0, 0, Attractor->Width, Attractor->Height);
XSetBackground(display, gc, MI_BLACK_PIXEL(mi));
XSetFunction(display, gc, GXcopy);
}
}
#endif
MI_CLEARWINDOW(mi);
/* Do not want any exposure events from XCopyPlane */
XSetGraphicsExposures(display, MI_GC(mi), False);
}
ENTRYPOINT void
init_strange(ModeInfo * mi)
{
Display *display = MI_DISPLAY(mi);
Window window = MI_WINDOW(mi);
#ifndef NO_DBUF
GC gc = MI_GC(mi);
#endif
ATTRACTOR *Attractor;
#ifdef POINTS_HISTORY
startedClearing=0;
oldPointsIndex=0;
#endif
if (Root == NULL) {
if ((Root = (ATTRACTOR *) calloc(MI_NUM_SCREENS(mi),
sizeof (ATTRACTOR))) == NULL)
return;
}
Attractor = &Root[MI_SCREEN(mi)];
if (Attractor->Fold == NULL) {
int i;
if ((Attractor->Fold = (PRM *) calloc(UNIT2 + 1,
sizeof (PRM))) == NULL) {
free_strange(display, Attractor);
return;
}
for (i = 0; i <= UNIT2; ++i) {
DBL x;
/* x = ( DBL )(i)/UNIT2; */
/* x = sin( M_PI/2.0*x ); */
/* x = sqrt( x ); */
/* x = x*x; */
/* x = x*(1.0-x)*4.0; */
x = (DBL) (i) / UNIT;
x = sin(x);
Attractor->Fold[i] = DBL_To_PRM(x);
}
}
Attractor->Max_Pt = points;
if (Attractor->Buffer1 == NULL)
if ((Attractor->Buffer1 = (XPoint *) calloc(Attractor->Max_Pt,
sizeof (XPoint))) == NULL) {
free_strange(display, Attractor);
return;
}
if (Attractor->Buffer2 == NULL)
if ((Attractor->Buffer2 = (XPoint *) calloc(Attractor->Max_Pt,
sizeof (XPoint))) == NULL) {
free_strange(display, Attractor);
return;
}
Attractor->Width = MI_WIDTH(mi);
Attractor->Height = MI_HEIGHT(mi);
Attractor->Cur_Pt = 0;
Attractor->Count = 0;
Attractor->Col = NRAND(MI_NPIXELS(mi));
Attractor->Speed = 4;
Attractor->Iterate = Funcs[NRAND(2)];
Random_Prm(Attractor->Prm1);
Random_Prm(Attractor->Prm2);
#ifndef NO_DBUF
if (Attractor->dbuf != None)
XFreePixmap(display, Attractor->dbuf);
#ifdef useAccumulator
#define colorDepth ( useAccumulator ? MI_DEPTH(mi) : 1 )
#else
#define colorDepth 1
#endif
Attractor->dbuf = XCreatePixmap(display, window,
Attractor->Width, Attractor->Height, colorDepth);
/* Allocation checked */
if (Attractor->dbuf != None) {
XGCValues gcv;
gcv.foreground = 0;
gcv.background = 0;
#ifndef HAVE_COCOA
gcv.graphics_exposures = False;
#endif /* HAVE_COCOA */
gcv.function = GXcopy;
if (Attractor->dbuf_gc != None)
XFreeGC(display, Attractor->dbuf_gc);
if ((Attractor->dbuf_gc = XCreateGC(display, Attractor->dbuf,
#ifndef HAVE_COCOA
GCGraphicsExposures |
#endif /* HAVE_COCOA */
GCFunction | GCForeground | GCBackground,
&gcv)) == None) {
XFreePixmap(display, Attractor->dbuf);
Attractor->dbuf = None;
} else {
XFillRectangle(display, Attractor->dbuf, Attractor->dbuf_gc,
0, 0, Attractor->Width, Attractor->Height);
XSetBackground(display, gc, MI_BLACK_PIXEL(mi));
XSetFunction(display, gc, GXcopy);
}
}
#endif
#ifdef useAccumulator
#define A Attractor
if (useAccumulator) {
XWindowAttributes xgwa;
int i,j;
XGetWindowAttributes (display, window, &xgwa);
/* cmap = xgwa.colormap; */
/* cmap = XCreateColormap(display, window, MI_VISUAL(mi), AllocAll); */
Attractor->accMap = (int**)calloc(Attractor->Width,sizeof(int*));
for (i=0;i<Attractor->Width;i++) {
Attractor->accMap[i] = (int*)calloc(Attractor->Height,sizeof(int));
for (j=0;j<Attractor->Height;j++) {
Attractor->accMap[i][j] = 0;
}
}
#ifdef POINTS_HISTORY
numOldPoints = A->Max_Pt * MERGE_FRAMES;
oldPointsX = (int*)calloc(numOldPoints,sizeof(int));
oldPointsY = (int*)calloc(numOldPoints,sizeof(int));
#endif
cols = (XColor*)calloc(NUM_COLS,sizeof(XColor));
for (i=0;i<NUM_COLS;i++) {
float li;
#define MINBLUE 1
#define FULLBLUE 128
li = MINBLUE + (255.0-MINBLUE) * log(1.0 + ACC_GAMMA*(float)i/NUM_COLS) / log(1.0 + ACC_GAMMA);
if (li<FULLBLUE) {
cols[i].red = 0;
cols[i].green = 0;
cols[i].blue = 65536*li/FULLBLUE;
} else {
cols[i].red = 65536*(li-FULLBLUE)/(256-FULLBLUE);
cols[i].green = 65536*(li-FULLBLUE)/(256-FULLBLUE);
cols[i].blue = 65535;
}
XAllocColor (display, xgwa.colormap, &cols[i]);
/*
if (!XAllocColor(MI_DISPLAY(mi), cmap, &cols[i])) {
if (!XAllocColor(display, cmap, &cols[i])) {
cols[i].pixel = WhitePixel (display, DefaultScreen (display));
cols[i].red = cols[i].green = cols[i].blue = 0xFFFF;
}
*/
}
/*
XSetWindowColormap(display, window, cmap);
(void) XSetWMColormapWindows(display, window, &window, 1);
XInstallColormap(display, cmap);
XStoreColors(display, cmap, cols, 256);
*/
}
#undef A
#endif
MI_CLEARWINDOW(mi);
/* Do not want any exposure events from XCopyPlane */
XSetGraphicsExposures(display, MI_GC(mi), False);
}
