--- /dev/null
+/* cubestorm, Copyright (c) 2003 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.
+ */
+
+#include <X11/Intrinsic.h>
+
+extern XtAppContext app;
+
+#define PROGCLASS "CubeStorm"
+#define HACK_INIT init_cube
+#define HACK_DRAW draw_cube
+#define HACK_RESHAPE reshape_cube
+#define HACK_HANDLE_EVENT cube_handle_event
+#define EVENT_MASK PointerMotionMask
+#define sws_opts xlockmore_opts
+
+#define DEF_SPIN "True"
+#define DEF_WANDER "True"
+#define DEF_SPEED "1.0"
+#define DEF_THICKNESS "0.06"
+#define DEF_COUNT "4"
+
+#define DEFAULTS "*delay: 30000 \n" \
+ "*count: 30 \n" \
+ "*showFPS: False \n" \
+ "*fpsSolid: True \n" \
+ "*wireframe: False \n" \
+ "*speed: " DEF_SPEED " \n" \
+ "*spin: " DEF_SPIN "\n" \
+ "*wander: " DEF_WANDER "\n" \
+ "*thickness: " DEF_THICKNESS "\n" \
+ "*count: " DEF_COUNT "\n" \
+
+
+#undef countof
+#define countof(x) (sizeof((x))/sizeof((*x)))
+
+#include "xlockmore.h"
+#include "colors.h"
+#include "rotator.h"
+#include "gltrackball.h"
+#include <ctype.h>
+
+#ifdef USE_GL /* whole file */
+
+#include <GL/glu.h>
+
+typedef struct {
+ rotator *rot;
+ int ccolor;
+} subcube;
+
+typedef struct {
+ GLXContext *glx_context;
+ trackball_state *trackball;
+ Bool button_down_p;
+ Bool clear_p;
+
+ GLuint cube_list;
+
+ int ncolors;
+ XColor *colors;
+
+ subcube *subcubes;
+
+} cube_configuration;
+
+static cube_configuration *bps = NULL;
+
+static Bool do_spin;
+static Bool do_wander;
+static GLfloat speed;
+static GLfloat thickness;
+
+static XrmOptionDescRec opts[] = {
+ { "-spin", ".spin", XrmoptionNoArg, "True" },
+ { "+spin", ".spin", XrmoptionNoArg, "False" },
+ { "-wander", ".wander", XrmoptionNoArg, "True" },
+ { "+wander", ".wander", XrmoptionNoArg, "False" },
+ { "-speed", ".speed", XrmoptionSepArg, 0 },
+ { "-thickness", ".thickness", XrmoptionSepArg, 0 },
+};
+
+static argtype vars[] = {
+ {(caddr_t *) &do_spin, "spin", "Spin", DEF_SPIN, t_Bool},
+ {(caddr_t *) &do_wander, "wander", "Wander", DEF_WANDER, t_Bool},
+ {(caddr_t *) &speed, "speed", "Speed", DEF_SPEED, t_Float},
+ {(caddr_t *) &thickness, "thickness", "Thickness", DEF_THICKNESS, t_Float},
+};
+
+ModeSpecOpt sws_opts = {countof(opts), opts, countof(vars), vars, NULL};
+
+
+static void
+draw_face (ModeInfo *mi)
+{
+ int wire = MI_IS_WIREFRAME(mi);
+
+ int i;
+ GLfloat t = thickness / 2;
+ GLfloat a = -0.5;
+ GLfloat b = 0.5;
+
+ if (t <= 0) t = 0.001;
+ else if (t > 0.5) t = 0.5;
+
+ glPushMatrix();
+ glFrontFace(GL_CW);
+
+ for (i = 0; i < 4; i++)
+ {
+ glNormal3f (0, 0, -1);
+ glBegin (wire ? GL_LINE_LOOP : GL_QUADS);
+ glVertex3f (a, a, a);
+ glVertex3f (b, a, a);
+ glVertex3f (b-t, a+t, a);
+ glVertex3f (a+t, a+t, a);
+ glEnd();
+
+ glNormal3f (0, 1, 0);
+ glBegin (wire ? GL_LINE_LOOP : GL_QUADS);
+ glVertex3f (b-t, a+t, a);
+ glVertex3f (b-t, a+t, a+t);
+ glVertex3f (a+t, a+t, a+t);
+ glVertex3f (a+t, a+t, a);
+ glEnd();
+
+ glRotatef(90, 0, 0, 1);
+ }
+ glPopMatrix();
+}
+
+static void
+draw_faces (ModeInfo *mi)
+{
+ glPushMatrix();
+ draw_face (mi);
+ glRotatef (90, 0, 1, 0); draw_face (mi);
+ glRotatef (90, 0, 1, 0); draw_face (mi);
+ glRotatef (90, 0, 1, 0); draw_face (mi);
+ glRotatef (90, 1, 0, 0); draw_face (mi);
+ glRotatef (180, 1, 0, 0); draw_face (mi);
+ glPopMatrix();
+}
+
+
+static void
+new_cube_colors (ModeInfo *mi)
+{
+ cube_configuration *bp = &bps[MI_SCREEN(mi)];
+ int i;
+ bp->ncolors = 128;
+ if (bp->colors) free (bp->colors);
+ bp->colors = (XColor *) calloc(bp->ncolors, sizeof(XColor));
+ make_smooth_colormap (0, 0, 0,
+ bp->colors, &bp->ncolors,
+ False, 0, False);
+ for (i = 0; i < MI_COUNT(mi); i++)
+ bp->subcubes[i].ccolor = random() % bp->ncolors;
+}
+
+
+/* Window management, etc
+ */
+void
+reshape_cube (ModeInfo *mi, int width, int height)
+{
+ GLfloat h = (GLfloat) height / (GLfloat) width;
+
+ glViewport (0, 0, (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, 45.0,
+ 0.0, 0.0, 0.0,
+ 0.0, 1.0, 0.0);
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+
+Bool
+cube_handle_event (ModeInfo *mi, XEvent *event)
+{
+ cube_configuration *bp = &bps[MI_SCREEN(mi)];
+
+ if (event->xany.type == ButtonPress &&
+ event->xbutton.button & Button1)
+ {
+ bp->button_down_p = True;
+ gltrackball_start (bp->trackball,
+ event->xbutton.x, event->xbutton.y,
+ MI_WIDTH (mi), MI_HEIGHT (mi));
+ return True;
+ }
+ else if (event->xany.type == ButtonRelease &&
+ event->xbutton.button & Button1)
+ {
+ bp->button_down_p = False;
+ return True;
+ }
+ else if (event->xany.type == MotionNotify &&
+ bp->button_down_p)
+ {
+ gltrackball_track (bp->trackball,
+ event->xmotion.x, event->xmotion.y,
+ MI_WIDTH (mi), MI_HEIGHT (mi));
+ return True;
+ }
+ else if (event->xany.type == KeyPress)
+ {
+ KeySym keysym;
+ char c = 0;
+ XLookupString (&event->xkey, &c, 1, &keysym, 0);
+ if (c == ' ')
+ {
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+ return True;
+ }
+ else if (c == '\r' || c == '\n')
+ {
+ new_cube_colors (mi);
+ return True;
+ }
+ }
+ return False;
+}
+
+
+void
+init_cube (ModeInfo *mi)
+{
+ cube_configuration *bp;
+ int wire = MI_IS_WIREFRAME(mi);
+ int i;
+
+ if (!bps) {
+ bps = (cube_configuration *)
+ calloc (MI_NUM_SCREENS(mi), sizeof (cube_configuration));
+ if (!bps) {
+ fprintf(stderr, "%s: out of memory\n", progname);
+ exit(1);
+ }
+
+ bp = &bps[MI_SCREEN(mi)];
+ }
+
+ bp = &bps[MI_SCREEN(mi)];
+
+ bp->glx_context = init_GL(mi);
+
+ if (MI_COUNT(mi) <= 0) MI_COUNT(mi) = 1;
+
+ bp->trackball = gltrackball_init ();
+ bp->subcubes = (subcube *) calloc (MI_COUNT(mi), sizeof(subcube));
+ for (i = 0; i < MI_COUNT(mi); i++)
+ {
+ double wander_speed, spin_speed, spin_accel;
+
+ if (i == 0)
+ {
+ wander_speed = 0.05 * speed;
+ spin_speed = 10.0 * speed;
+ spin_accel = 4.0 * speed;
+ }
+ else
+ {
+ wander_speed = 0;
+ spin_speed = 4.0 * speed;
+ spin_accel = 2.0 * speed;
+ }
+
+ bp->subcubes[i].rot = make_rotator (do_spin ? spin_speed : 0,
+ do_spin ? spin_speed : 0,
+ do_spin ? spin_speed : 0,
+ spin_accel,
+ do_wander ? wander_speed : 0,
+ True);
+ }
+
+ bp->colors = 0;
+ new_cube_colors (mi);
+
+ reshape_cube (mi, MI_WIDTH(mi), MI_HEIGHT(mi));
+
+ if (!wire)
+ {
+ GLfloat pos[4] = {1.0, 1.0, 1.0, 0.0};
+ GLfloat amb[4] = {0.0, 0.0, 0.0, 1.0};
+ GLfloat dif[4] = {1.0, 1.0, 1.0, 1.0};
+ GLfloat spc[4] = {0.0, 1.0, 1.0, 1.0};
+
+ glEnable(GL_LIGHTING);
+ glEnable(GL_LIGHT0);
+ glEnable(GL_DEPTH_TEST);
+ glEnable(GL_CULL_FACE);
+
+ glLightfv(GL_LIGHT0, GL_POSITION, pos);
+ glLightfv(GL_LIGHT0, GL_AMBIENT, amb);
+ glLightfv(GL_LIGHT0, GL_DIFFUSE, dif);
+ glLightfv(GL_LIGHT0, GL_SPECULAR, spc);
+ }
+
+ bp->cube_list = glGenLists (1);
+ glNewList (bp->cube_list, GL_COMPILE);
+ draw_faces (mi);
+ glEndList ();
+
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+
+void
+draw_cube (ModeInfo *mi)
+{
+ cube_configuration *bp = &bps[MI_SCREEN(mi)];
+ Display *dpy = MI_DISPLAY(mi);
+ Window window = MI_WINDOW(mi);
+ int wire = MI_IS_WIREFRAME(mi);
+ int i;
+ double x, y, z;
+
+ if (!bp->glx_context)
+ return;
+
+ glShadeModel(GL_SMOOTH);
+
+ glEnable(GL_DEPTH_TEST);
+ glEnable(GL_NORMALIZE);
+ glEnable(GL_CULL_FACE);
+
+ if (bp->clear_p) /* we're in "no vapor trails" mode */
+ {
+ glClear(GL_DEPTH_BUFFER_BIT|GL_COLOR_BUFFER_BIT);
+ if (! (random() % (int) (25 / speed)))
+ bp->clear_p = False;
+ }
+ else
+ {
+ if (! (random() % (int) (200 / speed)))
+ {
+ bp->clear_p = True;
+ new_cube_colors (mi);
+ }
+ }
+
+ glPushMatrix ();
+
+ glScalef(1.1, 1.1, 1.1);
+
+ mi->polygon_count = 0;
+
+ get_position (bp->subcubes[0].rot, &x, &y, &z, !bp->button_down_p);
+ glTranslatef((x - 0.5) * 15,
+ (y - 0.5) * 15,
+ (z - 0.5) * 30);
+ gltrackball_rotate (bp->trackball);
+
+ glScalef (4.0, 4.0, 4.0);
+
+ for (i = 0; i < MI_COUNT(mi); i++)
+ {
+ static GLfloat bcolor[4] = {0.0, 0.0, 0.0, 1.0};
+ static GLfloat bspec[4] = {1.0, 1.0, 1.0, 1.0};
+ static GLfloat bshiny = 128.0;
+
+ glPushMatrix();
+
+ if (i != 0) /* N+1 cubes rotate relative to cube 0 */
+ {
+ get_rotation (bp->subcubes[0].rot, &x, &y, &z, False);
+ 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);
+ }
+
+ get_rotation (bp->subcubes[i].rot, &x, &y, &z, !bp->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);
+
+ bcolor[0] = bp->colors[bp->subcubes[i].ccolor].red / 65536.0;
+ bcolor[1] = bp->colors[bp->subcubes[i].ccolor].green / 65536.0;
+ bcolor[2] = bp->colors[bp->subcubes[i].ccolor].blue / 65536.0;
+ bp->subcubes[i].ccolor++;
+ if (bp->subcubes[i].ccolor >= bp->ncolors)
+ bp->subcubes[i].ccolor = 0;
+
+ if (wire)
+ glColor3f (bcolor[0], bcolor[1], bcolor[2]);
+ else
+ {
+ glMaterialfv (GL_FRONT, GL_SPECULAR, bspec);
+ glMateriali (GL_FRONT, GL_SHININESS, bshiny);
+ glMaterialfv (GL_FRONT, GL_AMBIENT_AND_DIFFUSE, bcolor);
+ }
+
+ glCallList (bp->cube_list);
+ mi->polygon_count += (4 * 2 * 6);
+
+ glPopMatrix();
+ }
+
+ glPopMatrix ();
+
+ if (mi->fps_p) do_fps (mi);
+ glFinish();
+
+ glXSwapBuffers(dpy, window);
+}
+
+#endif /* USE_GL */
projects / xscreensaver / blobdiff