+++ /dev/null
-/* xscreensaver, Copyright (c) 1992, 1995, 1996, 1998
- * Jamie Zawinski <jwz@jwz.org>
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation. No representations are made about the suitability of this
- * software for any purpose. It is provided "as is" without express or
- * implied warranty.
- *
- * This code derived from TI Explorer Lisp code by Joe Keane, Fritz Mueller,
- * and Jamie Zawinski.
- */
-
-#include <math.h>
-#include "screenhack.h"
-
-static Display *dpy;
-static Window window;
-static GC color0, color1, color2, color3, color4, color5, color6, color7;
-static GC black;
-
-static int delay;
-
-static int observer_z;
-static int x_offset, y_offset;
-static int unit_pixels;
-
-struct point_state {
- int old_x, old_y;
- int new_x, new_y;
- Bool same_p;
-};
-
-static void
-move_line (struct point_state *state0, struct point_state *state1, GC gc)
-{
- if (state0->same_p && state1->same_p)
- return;
- if (mono_p)
- {
- XDrawLine (dpy, window, black,
- state0->old_x, state0->old_y, state1->old_x, state1->old_y);
- XDrawLine (dpy, window, gc,
- state0->new_x, state0->new_y, state1->new_x, state1->new_y);
- }
- else
- {
- XSegment segments [2];
- segments [0].x1 = state0->old_x; segments [0].y1 = state0->old_y;
- segments [0].x2 = state1->old_x; segments [0].y2 = state1->old_y;
- segments [1].x1 = state0->new_x; segments [1].y1 = state0->new_y;
- segments [1].x2 = state1->new_x; segments [1].y2 = state1->new_y;
- XDrawSegments (dpy, window, gc, segments, 2);
- }
-}
-
-static void
-hyper (double xy, double xz, double yz, double xw, double yw, double zw)
-{
- double cos_xy = cos (xy), sin_xy = sin (xy);
- double cos_xz = cos (xz), sin_xz = sin (xz);
- double cos_yz = cos (yz), sin_yz = sin (yz);
- double cos_xw = cos (xw), sin_xw = sin (xw);
- double cos_yw = cos (yw), sin_yw = sin (yw);
- double cos_zw = cos (zw), sin_zw = sin (zw);
-
- double ax = 1.0, ay = 0.0, az = 0.0, aw = 0.0;
- double bx = 0.0, by = 1.0, bz = 0.0, bw = 0.0;
- double cx = 0.0, cy = 0.0, cz = 1.0, cw = 0.0;
- double dx = 0.0, dy = 0.0, dz = 0.0, dw = 1.0;
-
- double _tmp0_, _tmp1_;
-
- struct point_state points [16];
- memset (points, 0, sizeof (points));
-
-#define mmmm (&points[0])
-#define mmmp (&points[1])
-#define mmpm (&points[2])
-#define mmpp (&points[3])
-#define mpmm (&points[4])
-#define mpmp (&points[5])
-#define mppm (&points[6])
-#define mppp (&points[7])
-#define pmmm (&points[8])
-#define pmmp (&points[9])
-#define pmpm (&points[10])
-#define pmpp (&points[11])
-#define ppmm (&points[12])
-#define ppmp (&points[13])
-#define pppm (&points[14])
-#define pppp (&points[15])
-
- while (1)
- {
- double temp_mult;
-
-#define compute(a,b,c,d,point_state) \
- temp_mult = (unit_pixels / (((a*az) + (b*bz) + (c*cz) + (d*dz) + \
- (a*aw) + (b*bw) + (c*cw) + (d*dw)) \
- - observer_z)); \
- point_state->old_x = point_state->new_x; \
- point_state->old_y = point_state->new_y; \
- point_state->new_x = ((((a*ax) + (b*bx) + (c*cx) + (d*dx)) * temp_mult) \
- + x_offset); \
- point_state->new_y = ((((a*ay) + (b*by) + (c*cy) + (d*dy)) * temp_mult) \
- + y_offset); \
- point_state->same_p = (point_state->old_x == point_state->new_x && \
- point_state->old_y == point_state->new_y);
-
- compute (-1, -1, -1, -1, mmmm);
- compute (-1, -1, -1, 1, mmmp);
- compute (-1, -1, 1, -1, mmpm);
- compute (-1, -1, 1, 1, mmpp);
- compute (-1, 1, -1, -1, mpmm);
- compute (-1, 1, -1, 1, mpmp);
- compute (-1, 1, 1, -1, mppm);
- compute (-1, 1, 1, 1, mppp);
- compute ( 1, -1, -1, -1, pmmm);
- compute ( 1, -1, -1, 1, pmmp);
- compute ( 1, -1, 1, -1, pmpm);
- compute ( 1, -1, 1, 1, pmpp);
- compute ( 1, 1, -1, -1, ppmm);
- compute ( 1, 1, -1, 1, ppmp);
- compute ( 1, 1, 1, -1, pppm);
- compute ( 1, 1, 1, 1, pppp);
-
- move_line (mmmm, mmmp, color0);
- move_line (mmmm, mmpm, color0);
- move_line (mmpm, mmpp, color0);
- move_line (mmmp, mmpp, color0);
-
- move_line (pmmm, pmmp, color1);
- move_line (pmmm, pmpm, color1);
- move_line (pmpm, pmpp, color1);
- move_line (pmmp, pmpp, color1);
-
- move_line (mpmm, mpmp, color2);
- move_line (mpmm, mppm, color2);
- move_line (mppm, mppp, color2);
- move_line (mpmp, mppp, color2);
-
- move_line (mmpp, mppp, color3);
- move_line (mmpp, pmpp, color3);
- move_line (pmpp, pppp, color3);
- move_line (mppp, pppp, color3);
-
- move_line (mmmm, mpmm, color4);
- move_line (mmmm, pmmm, color4);
- move_line (mpmm, ppmm, color4);
- move_line (pmmm, ppmm, color4);
-
- move_line (mmmp, mpmp, color5);
- move_line (mmmp, pmmp, color5);
- move_line (pmmp, ppmp, color5);
- move_line (mpmp, ppmp, color5);
-
- move_line (mmpm, mppm, color6);
- move_line (mmpm, pmpm, color6);
- move_line (pmpm, pppm, color6);
- move_line (mppm, pppm, color6);
-
- move_line (ppmm, ppmp, color7);
- move_line (ppmm, pppm, color7);
- move_line (pppm, pppp, color7);
- move_line (ppmp, pppp, color7);
-
- /* If you get error messages about the following forms, and you think you're
- using an ANSI C conforming compiler, then you're mistaken. Possibly you're
- mixing an ANSI compiler with a non-ANSI preprocessor, or vice versa.
- Regardless, your system is broken; it's not a bug in this program.
- */
-#if defined(__STDC__) || defined(__ANSI_CPP__)
-# define rotate(name,dim0,dim1,cos,sin) \
- _tmp0_ = ((name##dim0 * cos) + (name##dim1 * sin)); \
- _tmp1_ = ((name##dim1 * cos) - (name##dim0 * sin)); \
- name##dim0 = _tmp0_; \
- name##dim1 = _tmp1_;
-
-# define rotates(dim0,dim1) \
- if (sin_##dim0##dim1 != 0) { \
- rotate(a, dim0, dim1, cos_##dim0##dim1, sin_##dim0##dim1); \
- rotate(b, dim0, dim1, cos_##dim0##dim1, sin_##dim0##dim1); \
- rotate(c, dim0, dim1, cos_##dim0##dim1, sin_##dim0##dim1); \
- rotate(d, dim0, dim1, cos_##dim0##dim1, sin_##dim0##dim1); \
- }
-
-#else /* !__STDC__, courtesy of Andreas Luik <luik@isa.de> */
-# define rotate(name,dim0,dim1,cos,sin) \
- _tmp0_ = ((name/**/dim0 * cos) + (name/**/dim1 * sin)); \
- _tmp1_ = ((name/**/dim1 * cos) - (name/**/dim0 * sin)); \
- name/**/dim0 = _tmp0_; \
- name/**/dim1 = _tmp1_;
-
-# define rotates(dim0,dim1) \
- if (sin_/**/dim0/**/dim1 != 0) { \
- rotate(a,dim0,dim1,cos_/**/dim0/**/dim1,sin_/**/dim0/**/dim1); \
- rotate(b,dim0,dim1,cos_/**/dim0/**/dim1,sin_/**/dim0/**/dim1); \
- rotate(c,dim0,dim1,cos_/**/dim0/**/dim1,sin_/**/dim0/**/dim1); \
- rotate(d,dim0,dim1,cos_/**/dim0/**/dim1,sin_/**/dim0/**/dim1); \
- }
-#endif /* !__STDC__ */
-
- rotates (x,y);
- rotates (x,z);
- rotates (y,z);
- rotates (x,w);
- rotates (y,w);
- rotates (z,w);
-
- XSync (dpy, False);
- screenhack_handle_events (dpy);
- if (delay) usleep (delay);
- }
-}
-
-\f
-char *progclass = "Hypercube";
-
-char *defaults [] = {
- ".background: black",
- ".foreground: white",
- "*color0: red",
- "*color1: orange",
- "*color2: yellow",
- "*color3: white",
- "*color4: green",
- "*color5: cyan",
- "*color6: dodgerblue",
- "*color7: magenta",
-
- "*xw: 0.000",
- "*xy: 0.010",
- "*xz: 0.005",
- "*yw: 0.010",
- "*yz: 0.000",
- "*zw: 0.000",
-
- "*observer-z: 5",
- "*delay: 30000",
- 0
-};
-
-XrmOptionDescRec options [] = {
- { "-color0", ".color0", XrmoptionSepArg, 0 },
- { "-color1", ".color1", XrmoptionSepArg, 0 },
- { "-color2", ".color2", XrmoptionSepArg, 0 },
- { "-color3", ".color3", XrmoptionSepArg, 0 },
- { "-color4", ".color4", XrmoptionSepArg, 0 },
- { "-color5", ".color5", XrmoptionSepArg, 0 },
- { "-color6", ".color6", XrmoptionSepArg, 0 },
- { "-color7", ".color7", XrmoptionSepArg, 0 },
-
- { "-xw", ".xw", XrmoptionSepArg, 0 },
- { "-xy", ".xy", XrmoptionSepArg, 0 },
- { "-xz", ".xz", XrmoptionSepArg, 0 },
- { "-yw", ".yw", XrmoptionSepArg, 0 },
- { "-yz", ".yz", XrmoptionSepArg, 0 },
- { "-zw", ".zw", XrmoptionSepArg, 0 },
-
- { "-observer-z", ".observer-z", XrmoptionSepArg, 0 },
- { "-delay", ".delay", XrmoptionSepArg, 0 },
- { 0, 0, 0, 0 }
-};
-
-void
-screenhack (Display *d, Window w)
-{
- XGCValues gcv;
- XWindowAttributes xgwa;
- Colormap cmap;
- double xy, xz, yz, xw, yw, zw;
- unsigned long bg;
-
- dpy = d;
- window = w;
- XGetWindowAttributes (dpy, window, &xgwa);
- cmap = xgwa.colormap;
-
- x_offset = xgwa.width / 2;
- y_offset = xgwa.height / 2;
- unit_pixels = xgwa.width < xgwa.height ? xgwa.width : xgwa.height;
-
- xy = get_float_resource ("xy", "Float");
- xz = get_float_resource ("xz", "Float");
- yz = get_float_resource ("yz", "Float");
- xw = get_float_resource ("xw", "Float");
- yw = get_float_resource ("yw", "Float");
- zw = get_float_resource ("zw", "Float");
-
- observer_z = get_integer_resource ("observer-z", "Integer");
-
- delay = get_integer_resource ("delay", "Integer");
-
- bg = get_pixel_resource ("background", "Background", dpy, cmap);
-
- if (mono_p)
- {
- gcv.function = GXcopy;
- gcv.foreground = bg;
- black = XCreateGC (dpy, window, GCForeground|GCFunction, &gcv);
- gcv.foreground = get_pixel_resource ("foreground", "Foreground",
- dpy, cmap);
- color0 = color1 = color2 = color3 = color4 = color5 = color6 = color7 =
- XCreateGC (dpy, window, GCForeground|GCFunction, &gcv);
- }
- else
- {
- black = 0;
- gcv.function = GXxor;
-#define make_gc(color,name) \
- gcv.foreground = bg ^ get_pixel_resource ((name), "Foreground", \
- dpy, cmap); \
- color = XCreateGC (dpy, window, GCForeground|GCFunction, &gcv)
-
- make_gc (color0,"color0");
- make_gc (color1,"color1");
- make_gc (color2,"color2");
- make_gc (color3,"color3");
- make_gc (color4,"color4");
- make_gc (color5,"color5");
- make_gc (color6,"color6");
- make_gc (color7,"color7");
- }
-
- hyper (xy, xz, yz, xw, yw, zw);
-}
projects / xscreensaver / blobdiff