-/* gltext, Copyright (c) 2001 Jamie Zawinski <jwz@jwz.org>
+/* gltext, Copyright (c) 2001, 2002, 2003, 2004 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
#define HACK_INIT init_text
#define HACK_DRAW draw_text
#define HACK_RESHAPE reshape_text
+#define HACK_HANDLE_EVENT text_handle_event
+#define EVENT_MASK PointerMotionMask
#define sws_opts xlockmore_opts
#define DEF_TEXT "(default)"
+#define DEF_SPIN "XYZ"
+#define DEF_WANDER "True"
+
+#define DEFAULTS "*delay: 20000 \n" \
+ "*showFPS: False \n" \
+ "*wireframe: False \n" \
+ "*spin: " DEF_SPIN "\n" \
+ "*wander: " DEF_WANDER "\n" \
+ "*text: " DEF_TEXT "\n"
+
+
+#define SMOOTH_TUBE /* whether to have smooth or faceted tubes */
+
+#ifdef SMOOTH_TUBE
+# define TUBE_FACES 12 /* how densely to render tubes */
+#else
+# define TUBE_FACES 8
+#endif
-#define DEFAULTS "*delay: 10000 \n" \
- "*showFPS: False \n" \
- "*wireframe: False \n" \
- "*text: " DEF_TEXT "\n"
#undef countof
#define countof(x) (sizeof((x))/sizeof((*x)))
#include "xlockmore.h"
#include "colors.h"
+#include "tube.h"
+#include "rotator.h"
+#include "gltrackball.h"
+#include <time.h>
+#include <sys/time.h>
+#include <ctype.h>
#ifdef USE_GL /* whole file */
typedef struct {
GLXContext *glx_context;
-
- GLfloat rotx, roty, rotz; /* current object rotation */
- GLfloat dx, dy, dz; /* current rotational velocity */
- GLfloat ddx, ddy, ddz; /* current rotational acceleration */
- GLfloat d_max; /* max velocity */
+ rotator *rot;
+ trackball_state *trackball;
+ Bool button_down_p;
GLuint text_list;
XColor *colors;
int ccolor;
+ char *text;
+
} text_configuration;
static text_configuration *tps = NULL;
-static char *text;
+static char *text_fmt;
+static char *do_spin;
+static Bool do_wander;
static XrmOptionDescRec opts[] = {
- { "-text", ".text", XrmoptionSepArg, 0 }
+ { "-text", ".text", XrmoptionSepArg, 0 },
+ { "-spin", ".spin", XrmoptionSepArg, 0 },
+ { "+spin", ".spin", XrmoptionNoArg, "" },
+ { "-wander", ".wander", XrmoptionNoArg, "True" },
+ { "+wander", ".wander", XrmoptionNoArg, "False" }
};
static argtype vars[] = {
- {(caddr_t *) &text, "text", "Text", DEF_TEXT, t_String},
+ {&text_fmt, "text", "Text", DEF_TEXT, t_String},
+ {&do_spin, "spin", "Spin", DEF_SPIN, t_String},
+ {&do_wander, "wander", "Wander", DEF_WANDER, t_Bool},
};
ModeSpecOpt sws_opts = {countof(opts), opts, countof(vars), vars, NULL};
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
+ gluPerspective (30.0, 1/h, 1.0, 100.0);
- gluPerspective( 30.0, 1/h, 1.0, 100.0 );
- gluLookAt( 0.0, 0.0, 15.0,
- 0.0, 0.0, 0.0,
- 0.0, 1.0, 0.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
- glTranslatef(0.0, 0.0, -15.0);
+ gluLookAt( 0.0, 0.0, 30.0,
+ 0.0, 0.0, 0.0,
+ 0.0, 1.0, 0.0);
glClear(GL_COLOR_BUFFER_BIT);
}
}
-/* lifted from lament.c */
-#define RAND(n) ((long) ((random() & 0x7fffffff) % ((long) (n))))
-#define RANDSIGN() ((random() & 1) ? 1 : -1)
-
+/* The GLUT font only has ASCII characters in them, so do what we can to
+ convert Latin1 characters to the nearest ASCII equivalent...
+ */
static void
-rotate(GLfloat *pos, GLfloat *v, GLfloat *dv, GLfloat max_v)
+latin1_to_ascii (char *s)
{
- double ppos = *pos;
-
- /* tick position */
- if (ppos < 0)
- ppos = -(ppos + *v);
- else
- ppos += *v;
-
- if (ppos > 1.0)
- ppos -= 1.0;
- else if (ppos < 0)
- ppos += 1.0;
-
- if (ppos < 0) abort();
- if (ppos > 1.0) abort();
- *pos = (*pos > 0 ? ppos : -ppos);
-
- /* accelerate */
- *v += *dv;
-
- /* clamp velocity */
- if (*v > max_v || *v < -max_v)
- {
- *dv = -*dv;
- }
- /* If it stops, start it going in the other direction. */
- else if (*v < 0)
- {
- if (random() % 4)
- {
- *v = 0;
-
- /* keep going in the same direction */
- if (random() % 2)
- *dv = 0;
- else if (*dv < 0)
- *dv = -*dv;
- }
- else
- {
- /* reverse gears */
- *v = -*v;
- *dv = -*dv;
- *pos = -*pos;
- }
- }
-
- /* Alter direction of rotational acceleration randomly. */
- if (! (random() % 120))
- *dv = -*dv;
-
- /* Change acceleration very occasionally. */
- if (! (random() % 200))
+ unsigned char *us = (unsigned char *) s;
+ const unsigned char ascii[95] = {
+ '!', 'C', '#', '#', 'Y', '|', 'S', '_', 'C', '?', '<', '=', '-', 'R', '_',
+ '?', '?', '2', '3', '\'','u', 'P', '.', ',', '1', 'o', '>', '?', '?', '?',
+ '?', 'A', 'A', 'A', 'A', 'A', 'A', 'E', 'C', 'E', 'E', 'E', 'E', 'I', 'I',
+ 'I', 'I', 'D', 'N', 'O', 'O', 'O', 'O', 'O', 'x', '0', 'U', 'U', 'U', 'U',
+ 'Y', 'p', 'S', 'a', 'a', 'a', 'a', 'a', 'a', 'e', 'c', 'e', 'e', 'e', 'e',
+ 'i', 'i', 'i', 'i', 'o', 'n', 'o', 'o', 'o', 'o', 'o', '/', 'o', 'u', 'u',
+ 'u', 'u', 'y', 'p', 'y' };
+ while (*us)
{
- if (*dv == 0)
- *dv = 0.00001;
- else if (random() & 1)
- *dv *= 1.2;
- else
- *dv *= 0.8;
+ if (*us >= 161)
+ *us = ascii[*us - 161];
+ else if (*us > 127)
+ *us = '?';
+ us++;
}
}
-void
-init_text (ModeInfo *mi)
+static void
+parse_text (ModeInfo *mi)
{
- text_configuration *tp;
-
- if (!tps) {
- tps = (text_configuration *)
- calloc (MI_NUM_SCREENS(mi), sizeof (text_configuration));
- if (!tps) {
- fprintf(stderr, "%s: out of memory\n", progname);
- exit(1);
- }
-
- tp = &tps[MI_SCREEN(mi)];
- }
-
- tp = &tps[MI_SCREEN(mi)];
-
- if ((tp->glx_context = init_GL(mi)) != NULL) {
- gl_init(mi);
- reshape_text (mi, MI_WIDTH(mi), MI_HEIGHT(mi));
- }
-
- tp->rotx = frand(1.0) * RANDSIGN();
- tp->roty = frand(1.0) * RANDSIGN();
- tp->rotz = frand(1.0) * RANDSIGN();
-
- /* bell curve from 0-6 degrees, avg 3 */
- tp->dx = (frand(1) + frand(1) + frand(1)) / (360/2);
- tp->dy = (frand(1) + frand(1) + frand(1)) / (360/2);
- tp->dz = (frand(1) + frand(1) + frand(1)) / (360/2);
-
- tp->d_max = tp->dx * 2;
-
- tp->ddx = 0.00006 + frand(0.00003);
- tp->ddy = 0.00006 + frand(0.00003);
- tp->ddz = 0.00006 + frand(0.00003);
+ text_configuration *tp = &tps[MI_SCREEN(mi)];
- tp->ddx = 0.00001;
- tp->ddy = 0.00001;
- tp->ddz = 0.00001;
+ if (tp->text) free (tp->text);
- if (!text || !*text || !strcmp(text, "(default)"))
+ if (!text_fmt || !*text_fmt || !strcmp(text_fmt, "(default)"))
{
# ifdef HAVE_UNAME
struct utsname uts;
if (uname (&uts) < 0)
{
- text = strdup("uname() failed");
+ tp->text = strdup("uname() failed");
}
else
{
char *s;
if ((s = strchr(uts.nodename, '.')))
*s = 0;
- text = (char *) malloc(strlen(uts.nodename) +
- strlen(uts.sysname) +
- strlen(uts.version) +
- strlen(uts.release) + 10);
-# ifdef _AIX
- sprintf(text, "%s\n%s %s.%s",
+ tp->text = (char *) malloc(strlen(uts.nodename) +
+ strlen(uts.sysname) +
+ strlen(uts.version) +
+ strlen(uts.release) + 10);
+# if defined(_AIX)
+ sprintf(tp->text, "%s\n%s %s.%s",
uts.nodename, uts.sysname, uts.version, uts.release);
-# else /* !_AIX */
- sprintf(text, "%s\n%s %s",
+# elif defined(__APPLE__) /* MacOS X + XDarwin */
+ sprintf(tp->text, "%s\n%s %s\n%s",
+ uts.nodename, uts.sysname, uts.release, uts.machine);
+# else
+ sprintf(tp->text, "%s\n%s %s",
uts.nodename, uts.sysname, uts.release);
-# endif /* !_AIX */
+# endif /* special system types */
}
# else /* !HAVE_UNAME */
# ifdef VMS
- text = strdup(getenv("SYS$NODE"));
+ tp->text = strdup(getenv("SYS$NODE"));
# else
- text = strdup("* *\n* * *\nxscreensaver\n* * *\n* *");
+ tp->text = strdup("* *\n* * *\nxscreensaver\n* * *\n* *");
# endif
# endif /* !HAVE_UNAME */
}
+ else if (!strchr (text_fmt, '%'))
+ {
+ tp->text = strdup (text_fmt);
+ }
+ else
+ {
+ time_t now = time ((time_t *) 0);
+ struct tm *tm = localtime (&now);
+ int L = strlen(text_fmt) + 100;
+ tp->text = (char *) malloc (L);
+ *tp->text = 0;
+ strftime (tp->text, L-1, text_fmt, tm);
+ if (!*tp->text)
+ sprintf (tp->text, "strftime error:\n%s", text_fmt);
+ }
-
- tp->ncolors = 255;
- tp->colors = (XColor *) calloc(tp->ncolors, sizeof(XColor));
- make_smooth_colormap (0, 0, 0,
- tp->colors, &tp->ncolors,
- False, 0, False);
+ latin1_to_ascii (tp->text);
}
-static void
-unit_tube (Bool wire)
+Bool
+text_handle_event (ModeInfo *mi, XEvent *event)
{
- int i;
- GLfloat d3 = 0.2075;
-
- glPushMatrix();
-
- if (!wire)
- glShadeModel(GL_SMOOTH);
-
- glFrontFace(GL_CCW);
+ text_configuration *tp = &tps[MI_SCREEN(mi)];
- for (i = 0; i < 8; i++)
+ if (event->xany.type == ButtonPress &&
+ event->xbutton.button & Button1)
{
- glNormal3f(1, 0, 0);
- glBegin(wire ? GL_LINE_LOOP : GL_QUADS);
- glVertex3f(0.5, 0.0, -d3); glVertex3f(0.5, 1.0, -d3);
- glVertex3f(0.5, 1.0, d3); glVertex3f(0.5, 0.0, d3);
- glEnd();
- glRotatef(45, 0, 1, 0);
+ tp->button_down_p = True;
+ gltrackball_start (tp->trackball,
+ event->xbutton.x, event->xbutton.y,
+ MI_WIDTH (mi), MI_HEIGHT (mi));
+ return True;
}
-
- if (! wire)
+ else if (event->xany.type == ButtonRelease &&
+ event->xbutton.button & Button1)
+ {
+ tp->button_down_p = False;
+ return True;
+ }
+ else if (event->xany.type == MotionNotify &&
+ tp->button_down_p)
{
- glNormal3f(0, -1, 0);
- glBegin(GL_TRIANGLE_FAN);
- glVertex3f(0, 0, 0);
- glVertex3f(-d3, 0, -0.5); glVertex3f( d3, 0, -0.5);
- glVertex3f( 0.5, 0, -d3); glVertex3f( 0.5, 0, d3);
- glVertex3f( d3, 0, 0.5); glVertex3f(-d3, 0, 0.5);
- glVertex3f(-0.5, 0, d3); glVertex3f(-0.5, 0, -d3);
- glVertex3f(-d3, 0, -0.5); glVertex3f( d3, 0, -0.5);
-
- glEnd();
-
- glTranslatef(0, 1, 0);
-
- glNormal3f(0, 1, 0);
- glBegin(GL_TRIANGLE_FAN);
- glVertex3f(0, 0, 0);
- glVertex3f(-0.5, 0, -d3); glVertex3f(-0.5, 0, d3);
- glVertex3f(-d3, 0, 0.5); glVertex3f( d3, 0, 0.5);
- glVertex3f( 0.5, 0, d3); glVertex3f( 0.5, 0, -d3);
- glVertex3f( d3, 0, -0.5); glVertex3f(-d3, 0, -0.5);
- glVertex3f(-0.5, 0, -d3); glVertex3f(-0.5, 0, d3);
- glEnd();
+ gltrackball_track (tp->trackball,
+ event->xmotion.x, event->xmotion.y,
+ MI_WIDTH (mi), MI_HEIGHT (mi));
+ return True;
}
- glPopMatrix();
+ return False;
}
-static void
-tube (GLfloat x1, GLfloat y1,
- GLfloat x2, GLfloat y2,
- GLfloat z,
- GLfloat diameter,
- Bool wire)
+void
+init_text (ModeInfo *mi)
{
- GLfloat length, rot;
+ text_configuration *tp;
+ int i;
- if (y1 == y2) y2 += 0.01; /* waah... */
+ if (!tps) {
+ tps = (text_configuration *)
+ calloc (MI_NUM_SCREENS(mi), sizeof (text_configuration));
+ if (!tps) {
+ fprintf(stderr, "%s: out of memory\n", progname);
+ exit(1);
+ }
+
+ tp = &tps[MI_SCREEN(mi)];
+ }
+
+ tp = &tps[MI_SCREEN(mi)];
+
+ if ((tp->glx_context = init_GL(mi)) != NULL) {
+ gl_init(mi);
+ reshape_text (mi, MI_WIDTH(mi), MI_HEIGHT(mi));
+ }
- length = sqrt(((x2-x1)*(x2-x1)) +
- ((y2-y1)*(y2-y1)));
+ {
+ Bool spinx=False, spiny=False, spinz=False;
+ double spin_speed = 0.5;
+ double wander_speed = 0.02;
+ double spin_accel = 0.5;
- rot = (acos((x2-x1)/length)
- / (M_PI / 180));
+ char *s = do_spin;
+ while (*s)
+ {
+ if (*s == 'x' || *s == 'X') spinx = True;
+ else if (*s == 'y' || *s == 'Y') spiny = True;
+ else if (*s == 'z' || *s == 'Z') spinz = True;
+ else
+ {
+ fprintf (stderr,
+ "%s: spin must contain only the characters X, Y, or Z (not \"%s\")\n",
+ progname, do_spin);
+ exit (1);
+ }
+ s++;
+ }
- if (rot < 0 || rot > 180) abort();
- if (y1 <= y2) rot = -rot;
+ tp->rot = make_rotator (spinx ? spin_speed : 0,
+ spiny ? spin_speed : 0,
+ spinz ? spin_speed : 0,
+ spin_accel,
+ do_wander ? wander_speed : 0,
+ False);
+ tp->trackball = gltrackball_init ();
+ }
- rot = 180-rot;
+ tp->ncolors = 255;
+ tp->colors = (XColor *) calloc(tp->ncolors, sizeof(XColor));
+ make_smooth_colormap (0, 0, 0,
+ tp->colors, &tp->ncolors,
+ False, 0, False);
- if (diameter < 0) abort();
- if (length < 0) abort();
+ /* brighter colors, please... */
+ for (i = 0; i < tp->ncolors; i++)
+ {
+ tp->colors[i].red = (tp->colors[i].red / 2) + 32767;
+ tp->colors[i].green = (tp->colors[i].green / 2) + 32767;
+ tp->colors[i].blue = (tp->colors[i].blue / 2) + 32767;
+ }
- glPushMatrix();
+ parse_text (mi);
- glTranslatef(x1, y1, z);
- glRotatef(rot+90, 0, 0, 1);
- glTranslatef(0, -diameter/8, 0);
- glScalef (diameter, length+diameter/4, diameter);
- unit_tube (wire);
- glPopMatrix();
-
}
-
static int
fill_character (GLUTstrokeFont font, int c, Bool wire)
{
- int tube_width = 20;
+ GLfloat tube_width = 10;
const StrokeCharRec *ch;
const StrokeRec *stroke;
ch = &(fontinfo->ch[c]);
if (ch)
{
- GLfloat lx, ly;
+ GLfloat lx=0, ly=0;
for (i = ch->num_strokes, stroke = ch->stroke;
i > 0; i--, stroke++) {
for (j = stroke->num_coords, coord = stroke->coord;
j > 0; j--, coord++)
{
+# ifdef SMOOTH_TUBE
+ int smooth = True;
+# else
+ int smooth = False;
+# endif
if (j != stroke->num_coords)
- tube (lx, ly, coord->x, coord->y, 0, tube_width, wire);
+ tube (lx, ly, 0,
+ coord->x, coord->y, 0,
+ tube_width,
+ tube_width * 0.15,
+ TUBE_FACES, smooth, True, wire);
lx = coord->x;
ly = coord->y;
}
if (w > *wP) *wP = w;
*hP += line_height;
- s++;
lines++;
if (*s == 0) break;
+ s++;
}
else
s++;
{
int line_w = 0;
const char *s2;
+ const char *lstart = start;
+ const char *lend = s;
- for (s2 = start; s2 < s; s2++)
+ /* strip off whitespace at beginning and end of line
+ (since we're centering.) */
+ while (lend > lstart && isspace(lend[-1]))
+ lend--;
+ while (lstart < lend && isspace(*lstart))
+ lstart++;
+
+ for (s2 = lstart; s2 < lend; s2++)
line_w += glutStrokeWidth (GLUT_FONT, *s2);
x = (-ow/2) + ((ow-line_w)/2);
- while (start < s)
+ for (s2 = lstart; s2 < lend; s2++)
{
glPushMatrix();
glTranslatef(x, y, 0);
- off = fill_character (GLUT_FONT, *start, wire);
+ off = fill_character (GLUT_FONT, *s2, wire);
x += off;
glPopMatrix();
- start++;
}
+
start = s+1;
y -= line_height;
- s++;
if (*s == 0) break;
+ s++;
}
else
s++;
if (!tp->glx_context)
return;
+ if (strchr (text_fmt, '%'))
+ {
+ static time_t last_update = -1;
+ time_t now = time ((time_t *) 0);
+ if (now != last_update) /* do it once a second */
+ parse_text (mi);
+ last_update = now;
+ }
+
glShadeModel(GL_SMOOTH);
glEnable(GL_DEPTH_TEST);
glScalef(1.1, 1.1, 1.1);
{
- static int frame = 0;
- GLfloat x, y, z;
-
-# define SINOID(SCALE,SIZE) \
- ((((1 + sin((frame * (SCALE)) / 2 * M_PI)) / 2.0) * (SIZE)) - (SIZE)/2)
- x = SINOID(0.031, 9.0);
- y = SINOID(0.023, 9.0);
- z = SINOID(0.017, 9.0);
- frame++;
- glTranslatef(x, y, z);
-
- x = tp->rotx;
- y = tp->roty;
- z = tp->rotz;
- if (x < 0) x = 1 - (x + 1);
- if (y < 0) y = 1 - (y + 1);
- if (z < 0) z = 1 - (z + 1);
-
- 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);
-
- rotate(&tp->rotx, &tp->dx, &tp->ddx, tp->d_max);
- rotate(&tp->roty, &tp->dy, &tp->ddy, tp->d_max);
- rotate(&tp->rotz, &tp->dz, &tp->ddz, tp->d_max);
+ double x, y, z;
+ get_position (tp->rot, &x, &y, &z, !tp->button_down_p);
+ glTranslatef((x - 0.5) * 8,
+ (y - 0.5) * 8,
+ (z - 0.5) * 8);
+
+ gltrackball_rotate (tp->trackball);
+
+ get_rotation (tp->rot, &x, &y, &z, !tp->button_down_p);
+ 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);
}
+
glColor4fv (white);
color[0] = tp->colors[tp->ccolor].red / 65536.0;
glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, color);
glScalef(0.01, 0.01, 0.01);
- fill_string(text, wire);
+
+ fill_string(tp->text, wire);
glPopMatrix ();
projects / xscreensaver / blobdiff