summaryrefslogtreecommitdiffstats
path: root/hacks/glx/hypnowheel.c
diff options
context:
space:
mode:
Diffstat (limited to 'hacks/glx/hypnowheel.c')
-rw-r--r--hacks/glx/hypnowheel.c334
1 files changed, 0 insertions, 334 deletions
diff --git a/hacks/glx/hypnowheel.c b/hacks/glx/hypnowheel.c
deleted file mode 100644
index 1032ae6..0000000
--- a/hacks/glx/hypnowheel.c
+++ /dev/null
@@ -1,334 +0,0 @@
-/* hypnowheel, Copyright (c) 2008 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.
- *
- * Draws overlapping spirals, where the tightness of the spirals changes.
- * Nice settings:
- *
- * -layers 7 -wander
- * -count 3 -layers 50
- * -twistiness 0.2 -layers 20
- * -count 3 -layers 2 -speed 20 -twist 10 -wander
- */
-
-#define DEFAULTS "*delay: 20000 \n" \
- "*count: 13 \n" \
- "*showFPS: False \n" \
- "*fpsSolid: True \n" \
- "*wireframe: False \n" \
- "*suppressRotationAnimation: True\n" \
-
-# define release_hypnowheel 0
-
-#include "xlockmore.h"
-#include "colors.h"
-#include "rotator.h"
-#include <ctype.h>
-
-#ifdef USE_GL /* whole file */
-
-
-#define DEF_WANDER "False"
-#define DEF_SYMMETRIC "False"
-#define DEF_SPEED "1.0"
-#define DEF_TWISTINESS "4.0"
-#define DEF_LAYERS "4"
-
-typedef struct {
- int color;
- GLfloat twist;
- GLfloat alpha;
- rotator *rot;
-} disc;
-
-typedef struct {
- GLXContext *glx_context;
- rotator *rot;
- disc *discs;
- int ncolors;
- XColor *colors;
-
-} hypnowheel_configuration;
-
-static hypnowheel_configuration *bps = NULL;
-
-static GLfloat speed;
-static GLfloat twistiness;
-static GLint nlayers;
-static Bool do_wander;
-static Bool do_symmetric;
-
-static XrmOptionDescRec opts[] = {
- { "-speed", ".speed", XrmoptionSepArg, 0 },
- { "-twistiness", ".twistiness", XrmoptionSepArg, 0 },
- { "-layers", ".layers", XrmoptionSepArg, 0 },
- { "-wander", ".wander", XrmoptionNoArg, "True" },
- { "+wander", ".wander", XrmoptionNoArg, "False" },
- { "-symmetric", ".symmetric", XrmoptionNoArg, "True" },
- { "+symmetric", ".symmetric", XrmoptionNoArg, "False" },
-};
-
-static argtype vars[] = {
- {&do_wander, "wander", "Wander", DEF_WANDER, t_Bool},
- {&do_symmetric, "symmetric", "Symmetric", DEF_SYMMETRIC, t_Bool},
- {&speed, "speed", "Speed", DEF_SPEED, t_Float},
- {&twistiness, "twistiness", "Twistiness", DEF_TWISTINESS, t_Float},
- {&nlayers, "layers", "Layers", DEF_LAYERS, t_Int},
-};
-
-ENTRYPOINT ModeSpecOpt hypnowheel_opts = {
- countof(opts), opts, countof(vars), vars, NULL};
-
-
-static void
-draw_spiral (ModeInfo *mi, disc *d)
-{
- int wire = MI_IS_WIREFRAME(mi);
- hypnowheel_configuration *bp = &bps[MI_SCREEN(mi)];
- GLfloat rr = 0.5;
- int n = MI_COUNT(mi);
- int steps = n * (wire ? 3 : (n < 5 ? 60 : n < 10 ? 20 : 10));
- GLfloat dth = M_PI*2 / n;
- GLfloat dr = rr / steps;
- GLfloat th;
- GLfloat twist = d->twist;
- GLfloat dtwist = M_PI * 2 * twist / steps;
- double cscale = 65536.0;
-
- if (nlayers > 3 && !wire)
- cscale *= (nlayers-2); /* don't wash out to white */
-
- glColor4f (bp->colors[d->color].red / cscale,
- bp->colors[d->color].green / cscale,
- bp->colors[d->color].blue / cscale,
- d->alpha);
- for (th = 0; th < M_PI*2; th += dth)
- {
- GLfloat th1 = th;
- GLfloat r;
- glBegin (wire ? GL_LINE_STRIP : GL_QUAD_STRIP);
- for (r = 0; r <= rr; r += dr)
- {
- GLfloat th2 = th1 + dth/2 + dtwist;
- th1 += dtwist;
- glVertex3f (r * cos(th1), r * sin(th1), 0);
- if (! wire)
- glVertex3f (r * cos(th2), r * sin(th2), 0);
- mi->polygon_count++;
- }
- glEnd();
- }
-}
-
-
-
-/* Window management, etc
- */
-ENTRYPOINT void
-reshape_hypnowheel (ModeInfo *mi, int width, int height)
-{
- GLfloat h = (GLfloat) height / (GLfloat) width;
- int y = 0;
-
- if (width > height * 3) { /* tiny window: show middle */
- height = width;
- y = -height/2;
- h = height / (GLfloat) width;
- }
-
- glViewport (0, y, (GLint) width, (GLint) height);
-
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
- gluPerspective (30.0, 1/h, 1.0, 100.0);
-
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- gluLookAt( 0.0, 0.0, 30.0,
- 0.0, 0.0, 0.0,
- 0.0, 1.0, 0.0);
-
- {
- GLfloat s = (MI_WIDTH(mi) < MI_HEIGHT(mi)
- ? (MI_WIDTH(mi) / (GLfloat) MI_HEIGHT(mi))
- : 1);
- glScalef (s, s, s);
- }
-
- glClear(GL_COLOR_BUFFER_BIT);
-}
-
-
-ENTRYPOINT void
-init_hypnowheel (ModeInfo *mi)
-{
- hypnowheel_configuration *bp;
- int wire = MI_IS_WIREFRAME(mi);
- int i;
-
- MI_INIT (mi, bps);
-
- bp = &bps[MI_SCREEN(mi)];
-
- bp->glx_context = init_GL(mi);
-
- reshape_hypnowheel (mi, MI_WIDTH(mi), MI_HEIGHT(mi));
-
- if (! bp->rot)
- bp->rot = make_rotator (0, 0, 0, 0, speed * 0.0025, False);
-
- bp->ncolors = 1024;
- if (!bp->colors)
- bp->colors = (XColor *) calloc(bp->ncolors, sizeof(XColor));
- make_smooth_colormap (0, 0, 0,
- bp->colors, &bp->ncolors,
- False, 0, False);
-
- if (MI_COUNT(mi) < 2) MI_COUNT(mi) = 2;
- if (nlayers < 1) nlayers = 1;
- if (!bp->discs)
- bp->discs = (disc *) calloc (nlayers, sizeof (disc));
-
- for (i = 0; i < nlayers; i++)
- {
- double spin_speed = speed * 0.2;
- double wander_speed = speed * 0.0012;
- double spin_accel = 0.2;
-
- bp->discs[i].twist = 0;
- bp->discs[i].alpha = 1;
- bp->discs[i].color = i * bp->ncolors / nlayers;
-
- spin_speed += frand (spin_speed / 5);
- wander_speed += frand (wander_speed * 3);
-
- if (!bp->discs[i].rot)
- bp->discs[i].rot = make_rotator (spin_speed, spin_speed, spin_speed,
- spin_accel,
- (do_wander ? wander_speed : 0),
- True);
- }
-
- glDisable (GL_LIGHTING);
- glDisable (GL_DEPTH_TEST);
- glDepthMask (GL_FALSE);
- glDisable (GL_CULL_FACE);
-
- if (! wire)
- {
- glEnable (GL_BLEND);
- glBlendFunc (GL_ONE, GL_ONE);
- }
-}
-
-
-ENTRYPOINT void
-draw_hypnowheel (ModeInfo *mi)
-{
- hypnowheel_configuration *bp = &bps[MI_SCREEN(mi)];
- Display *dpy = MI_DISPLAY(mi);
- Window window = MI_WINDOW(mi);
- int i;
-
- if (!bp->glx_context)
- return;
-
- glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *bp->glx_context);
-
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glPushMatrix ();
-
- {
- double x, y, z;
- get_position (bp->rot, &x, &y, &z, True);
- glTranslatef((x - 0.5) * 8,
- (y - 0.5) * 8,
- 0);
-
- get_rotation (bp->rot, &x, &y, &z, True);
- glRotatef (x * 360, 1.0, 0.0, 0.0);
- glRotatef (y * 360, 0.0, 1.0, 0.0);
- glRotatef (z * 360, 0.0, 0.0, 1.0);
- }
-
- mi->polygon_count = 0;
-
- glScalef (45, 45, 45);
-
- for (i = 0; i < nlayers; i++)
- {
- disc *d = &bp->discs[i];
- double x, y, z;
- rotator *rot = (do_symmetric ? bp->discs[(i & ~0x1)].rot : d->rot);
- Bool tick = (!do_symmetric || i == 0);
-
- glPushMatrix();
-
- d->color++;
- if (d->color >= bp->ncolors)
- d->color = 0;
-
- get_position (rot, &x, &y, &z, tick);
- x -= 0.5;
- y -= 0.5;
- x *= 0.1;
- y *= 0.1;
-
- glTranslatef (x, y, 0);
- d->twist = (z * twistiness *
- ((i & 1) ? 1 : -1));
-
- get_rotation (rot, &x, &y, &z, tick);
-
- glRotatef (360 * z, 0, 0, 1); /* rotation of this disc */
-
- draw_spiral (mi, &bp->discs[i]);
- glPopMatrix();
- }
-
- glPopMatrix ();
-
- if (mi->fps_p) do_fps (mi);
- glFinish();
-
- glXSwapBuffers(dpy, window);
-}
-
-ENTRYPOINT Bool
-hypnowheel_handle_event (ModeInfo *mi, XEvent *event)
-{
- if (screenhack_event_helper (MI_DISPLAY(mi), MI_WINDOW(mi), event))
- {
- init_hypnowheel (mi);
- return True;
- }
- return False;
-}
-
-
-ENTRYPOINT void
-free_hypnowheel (ModeInfo *mi)
-{
- hypnowheel_configuration *bp = &bps[MI_SCREEN(mi)];
- int i;
- if (!bp->glx_context) return;
- glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *bp->glx_context);
- if (bp->colors) free (bp->colors);
- if (bp->rot) free_rotator (bp->rot);
- if (bp->discs) {
- for (i = 0; i < nlayers; i++)
- if (bp->discs[i].rot) free_rotator (bp->discs[i].rot);
- free (bp->discs);
- }
-}
-
-XSCREENSAVER_MODULE ("Hypnowheel", hypnowheel)
-
-#endif /* USE_GL */
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2026-03-09 23:54:25 +0100