- { "-detail", ".length", XrmoptionSepArg, 0 },
- { "-delay", ".delay", XrmoptionSepArg, 0 },
- { "-mode", ".mode", XrmoptionSepArg, 0 },
- { "-colors", ".colors", XrmoptionSepArg, 0 },
- { "-functions", ".lensnum", XrmoptionSepArg, 0 },
- { "-notranslate", ".notranslate", XrmoptionNoArg, "True" },
- { "-noscale", ".noscale", XrmoptionNoArg, "True" },
- { "-norotate", ".norotate", XrmoptionNoArg, "True" },
+ { "-detail", ".length", XrmoptionSepArg, 0 },
+ { "-delay", ".delay", XrmoptionSepArg, 0 },
+ { "-mode", ".mode", XrmoptionSepArg, 0 },
+ { "-colors", ".colors", XrmoptionSepArg, 0 },
+ { "-functions", ".lensnum", XrmoptionSepArg, 0 },
+ { "-notranslate", ".notranslate", XrmoptionNoArg, "True" },
+ { "-noscale", ".noscale", XrmoptionNoArg, "True" },
+ { "-norotate", ".norotate", XrmoptionNoArg, "True" },
- if(!norotate) {
- l->raa+=myrandom(0.002)-0.001;
- l->ra+=l->raa;
- l->r +=l->ra;
- if(l->ra>0.07 || l->ra<-0.07) l->ra/=1.4;
- if(l->raa>0.005 || l->raa<-0.005) l->raa/=1.2;
- }
- if(!noscale) {
- l->sa+=myrandom(0.01)-0.005;
- l->s +=l->sa;
- if(l->s>0.4) l->sa -=0.004;
- if(l->s<-0.4) l->sa +=0.004;
- if(l->sa>0.07 || l->sa<-0.07) l->sa/=1.4;
- }
- if(!notranslate) {
- l->txa+=myrandom(0.004)-0.002;
- l->tya+=myrandom(0.004)-0.002;
- l->tx+=l->txa;
- l->ty+=l->tya;
- if(l->tx>6) l->txa-=0.004;
- if(l->ty>6) l->tya-=0.004;
- if(l->tx<-6) l->txa+=0.004;
- if(l->ty<-6) l->tya+=0.004;
- if(l->txa>0.05 || l->txa<-0.05) l->txa/=1.7;
- if(l->tya>0.05 || l->tya<-0.05) l->tya/=1.7;
- }
-
- /*Groovy, colour-shifting functions!*/
- l->co++;
- l->co %= ncolours;
+ if(!norotate) {
+ float factor;
+ if(l->rc >= 1) {
+ l->rc= 0;
+ l->ro = l->rt;
+ l->rt = myrandom(4)-2;
+ }
+ factor = (sin((-M_PI / 2.0) + M_PI * l->rc) + 1.0) / 2.0;
+ l->r=l->ro + (l->rt - l->ro) * factor;
+ l->rc+=0.01;
+
+ }
+ if(!noscale) {
+ float factor;
+ if(l->sc >= 1) {
+ /*Reset counter, obtain new target value*/
+ l->sc= 0;
+ l->so = l->st;
+ l->st = myrandom(2)-1;
+ }
+ factor = (sin((-M_PI / 2.0) + M_PI * l->sc) + 1.0) / 2.0;
+ /* Take average of old target and new target, using factor to *
+ * weight. It's computed sinusoidally, resulting in smooth, *
+ * rhythmic transitions. */
+ l->s=l->so + (l->st - l->so) * factor;
+ l->sc+=0.01;
+ }
+ if(!notranslate) {
+ l->txa+=myrandom(0.004)-0.002;
+ l->tya+=myrandom(0.004)-0.002;
+ l->tx+=l->txa;
+ l->ty+=l->tya;
+ if(l->tx>6) l->txa-=0.004;
+ if(l->ty>6) l->tya-=0.004;
+ if(l->tx<-6) l->txa+=0.004;
+ if(l->ty<-6) l->tya+=0.004;
+ if(l->txa>0.05 || l->txa<-0.05) l->txa/=1.7;
+ if(l->tya>0.05 || l->tya<-0.05) l->tya/=1.7;
+ }
+
+ /*Groovy, colour-shifting functions!*/
+ l->co++;
+ l->co %= ncolours;
- int i;
- if(length == 0) {
- sp(x,y,curcol);
- } else {
- /*iterate(lenses[0].stepx(x,y),lenses[0].stepy(x,y),length-1);
- iterate(lenses[1].stepx(x,y),lenses[1].stepy(x,y),length-1);
- iterate(lenses[2].stepx(x,y),lenses[2].stepy(x,y),length-1);*/
- for(i=0;i<lensnum;i++) {
- switch(mode) {
- case 0 : iterate(stepx( x, y, lenses[i]), stepy( x, y, lenses[i]), blend( curcol,colours[(int)lenses[i]->co].pixel ), length-1); break;
- case 1 : iterate(stepx( x, y, lenses[i]), stepy( x, y, lenses[i]), colours[(int)lenses[i]->co].pixel, length-1); break;
- case 2 : iterate(stepx( x, y, lenses[i]), stepy( x, y, lenses[i]), curcol, length-1); break;
- default: exit(0);
- }
- }
- }
- count++;
+ int i;
+ if(length == 0) {
+ sp(x,y,curcol);
+ } else {
+ for(i=0;i<lensnum;i++) {
+ switch(mode) {
+ case 0 : iterate(stepx( x, y, lenses[i]), stepy( x, y, lenses[i]), blend( curcol,colours[(int)lenses[i]->co].pixel ), length-1); break;
+ case 1 : iterate(stepx( x, y, lenses[i]), stepy( x, y, lenses[i]), colours[(int)lenses[i]->co].pixel, length-1); break;
+ case 2 : iterate(stepx( x, y, lenses[i]), stepy( x, y, lenses[i]), curcol, length-1); break;
+ default: exit(0);
+ }
+ }
+ }
+ count++;
- Window rw;
- int i;
- XWindowAttributes xgwa;
-
- delay = get_integer_resource("delay", "Delay");
- length = get_integer_resource("length", "Detail");
- mode = get_integer_resource("mode", "Mode");
-
- norotate = get_boolean_resource("norotate", "NoRotate");
- noscale = get_boolean_resource("noscale", "NoScale");
- notranslate = get_boolean_resource("notranslate", "NoTranslate");
-
- lensnum = get_integer_resource("lensnum", "Functions");
-
- lenses = malloc(sizeof(Lens)*lensnum);
-
- for(i=0;i<lensnum;i++) {
- lenses[i]=malloc(sizeof(Lens));
- }
-
- /*Thanks go to Dad for teaching me how to allocate memory for struct**s . */
-
- XGetWindowAttributes (dpy, w, &xgwa);
- width=xgwa.width;
- height=xgwa.height;
-
- /*Initialise all this X shizzle*/
- blackColor = BlackPixel(dpy, DefaultScreen(dpy));
- whiteColor = WhitePixel(dpy, DefaultScreen(dpy));
- rw = RootWindow(dpy, screen_num);
- screen_num = DefaultScreen(dpy);
- gc = XCreateGC(dpy, rw, 0, NULL);
-
- /* Do me some colourmap magic. If we're using blend mode, this is just *
- * for the nice colours - we're still using true/hicolour. Screw me if *
- * I'm going to work out how to blend with colourmaps - I'm too young to *
- * die!! On a sidenote, this is mostly stolen from halftone because I *
- * don't really know what the hell I'm doing, here. */
- ncolours = get_integer_resource("colors", "Colors");
- if(ncolours < lensnum) ncolours=lensnum; /*apparently you're allowed to do this kind of thing...*/
- colours = (XColor *)calloc(ncolours, sizeof(XColor));
- make_smooth_colormap ( dpy,
- xgwa.visual,
- xgwa.colormap,
- colours,
- &ncolours,
- True, 0, False);
- /*No, I didn't have a clue what that really did... hopefully I have some colours in an array, now.*/
- wcol = (int)myrandom(ncolours);
-
- /*Double buffering - I can't be bothered working out the XDBE thingy*/
- backbuffer = XCreatePixmap(dpy, w, width, height, XDefaultDepth(dpy, screen_num));
-
- /*Scaling factor*/
- wt=width/32;
- ht=height/24;
-
- ws=400;
- hs=400;
-
- /*Colourmapped colours for the general prettiness*/
- for(i=0;i<lensnum;i++) {
- CreateLens( myrandom(1)-0.5,
- myrandom(1),
- myrandom(4)-2,
- myrandom(4)+2,
- myrandom(ncolours),
- lenses[i]);
- }
+ Window rw;
+ int i;
+ XWindowAttributes xgwa;
+
+ delay = get_integer_resource("delay", "Delay");
+ length = get_integer_resource("length", "Detail");
+ mode = get_integer_resource("mode", "Mode");
+
+ norotate = get_boolean_resource("norotate", "NoRotate");
+ noscale = get_boolean_resource("noscale", "NoScale");
+ notranslate = get_boolean_resource("notranslate", "NoTranslate");
+
+ lensnum = get_integer_resource("lensnum", "Functions");
+
+ lenses = malloc(sizeof(Lens)*lensnum);
+
+ for(i=0;i<lensnum;i++) {
+ lenses[i]=malloc(sizeof(Lens));
+ }
+
+ /*Thanks go to Dad for teaching me how to allocate memory for struct**s . */
+
+ XGetWindowAttributes (dpy, w, &xgwa);
+ width=xgwa.width;
+ height=xgwa.height;
+
+ /*Initialise all this X shizzle*/
+ blackColor = BlackPixel(dpy, DefaultScreen(dpy));
+ whiteColor = WhitePixel(dpy, DefaultScreen(dpy));
+ rw = RootWindow(dpy, screen_num);
+ screen_num = DefaultScreen(dpy);
+ gc = XCreateGC(dpy, rw, 0, NULL);
+
+ /* Do me some colourmap magic. If we're using blend mode, this is just *
+ * for the nice colours - we're still using true/hicolour. Screw me if *
+ * I'm going to work out how to blend with colourmaps - I'm too young to *
+ * die!! On a sidenote, this is mostly stolen from halftone because I *
+ * don't really know what the hell I'm doing, here. */
+ ncolours = get_integer_resource("colors", "Colors");
+ if(ncolours < lensnum) ncolours=lensnum; /*apparently you're allowed to do this kind of thing...*/
+ colours = (XColor *)calloc(ncolours, sizeof(XColor));
+ make_smooth_colormap ( dpy,
+ xgwa.visual,
+ xgwa.colormap,
+ colours,
+ &ncolours,
+ True, 0, False);
+ /*No, I didn't have a clue what that really did... hopefully I have some colours in an array, now.*/
+ wcol = (int)myrandom(ncolours);
+
+ /*Double buffering - I can't be bothered working out the XDBE thingy*/
+ backbuffer = XCreatePixmap(dpy, w, width, height, XDefaultDepth(dpy, screen_num));
+
+ /*Scaling factor*/
+ wt=width/32;
+ ht=height/24;
+
+ ws=400;
+ hs=400;
+
+ /*Colourmapped colours for the general prettiness*/
+ for(i=0;i<lensnum;i++) {
+ CreateLens( myrandom(1)-0.5,
+ myrandom(1),
+ myrandom(4)-2,
+ myrandom(4)+2,
+ myrandom(ncolours),
+ lenses[i]);
+ }