From http://www.jwz.org/xscreensaver/xscreensaver-5.37.tar.gz

[xscreensaver] / hacks / glx / rubik.c

diff --git a/hacks/glx/rubik.c b/hacks/glx/rubik.c
index f41985866b83f422b08b222d3c29911a717dd29f..7d43bd856a1fe61d08ed1b8b097442974bc4dd58 100644 (file)
--- a/hacks/glx/rubik.c
+++ b/hacks/glx/rubik.c
@@ -109,15 +109,19 @@ static const char sccsid[] = "@(#)rubik.c 5.01 2001/03/01 xlockmore";
                                        "*count: -30 \n"                \
                                        "*showFPS: False \n"    \
                                        "*cycles: 20 \n"                \
-                                       "*size:  -6 \n"
+                                       "*size:  -6 \n"         \
+                                       "*suppressRotationAnimation: True\n" \
+
 # define refresh_rubik 0
-# define rubik_handle_event 0
+# define release_rubik 0
 # include "xlockmore.h"                                /* from the xscreensaver distribution */
 #else /* !STANDALONE */
 # include "xlock.h"                                    /* from the xlockmore distribution */
 # include "vis.h"
 #endif /* !STANDALONE */
 
+#include "gltrackball.h"
+
 #ifdef MODE_rubik
 
 #define DEF_SIZEX     "0"
@@ -160,7 +164,7 @@ ENTRYPOINT ModeSpecOpt rubik_opts =
 
 #ifdef USE_MODULES
 ModStruct   rubik_description =
-{"rubik", "init_rubik", "draw_rubik", "release_rubik",
+{"rubik", "init_rubik", "draw_rubik", (char *) NULL,
  "draw_rubik", "change_rubik", (char *) NULL, &rubik_opts,
  10000, -30, 5, -6, 64, 1.0, "",
  "Shows an auto-solving Rubik's Cube", 0, NULL};
@@ -372,6 +376,8 @@ typedef struct {
        GLfloat     rotatestep;
        GLfloat     PX, PY, VX, VY;
        GLXContext *glx_context;
+    Bool button_down_p;
+    trackball_state *trackball;
 } rubikstruct;
 
 static const float front_shininess[] = {60.0};
@@ -468,6 +474,7 @@ faceSizes(rubikstruct * rp, int face, int * sizeOfRow, int * sizeOfColumn)
                        *sizeOfRow = MAXSIZEX;
                        *sizeOfColumn = MAXSIZEY;
                        break;
+                default: abort();
        }
 }
 
@@ -1621,7 +1628,7 @@ moveRubik(rubikstruct * rp, int face, int direction, int position)
 }
 
 #ifdef DEBUG
-void
+static void
 printCube(rubikstruct * rp)
 {
        int         face, position, sizeOfRow, sizeOfColumn;
@@ -1813,14 +1820,31 @@ reshape_rubik(ModeInfo * mi, int width, int height)
        glLoadIdentity();
        glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 15.0);
        glMatrixMode(GL_MODELVIEW);
+}
 
+ENTRYPOINT Bool
+rubik_handle_event (ModeInfo *mi, XEvent *event)
+{
+  rubikstruct *rp = &rubik[MI_SCREEN(mi)];
+
+  if (gltrackball_event_handler (event, rp->trackball,
+                                 MI_WIDTH (mi), MI_HEIGHT (mi),
+                                 &rp->button_down_p))
+    return True;
+  else if (screenhack_event_helper (MI_DISPLAY(mi), MI_WINDOW(mi), event))
+    {
+      rp->done = 1;
+      return True;
+    }
+
+  return False;
 }
 
+
 static Bool
 pinit(ModeInfo * mi)
 {
        glClearDepth(1.0);
-       glClearColor(0.0, 0.0, 0.0, 1.0);
        glColor3f(1.0, 1.0, 1.0);
 
        glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);
@@ -1846,8 +1870,9 @@ pinit(ModeInfo * mi)
 }
 
 static void
-free_rubik(rubikstruct *rp)
+free_rubik(ModeInfo *mi)
 {
+       rubikstruct *rp = &rubik[MI_SCREEN(mi)];
        int         i;
 
        for (i = 0; i < MAXFACES; i++)
@@ -1866,44 +1891,25 @@ free_rubik(rubikstruct *rp)
        }
 }
 
-ENTRYPOINT void
-release_rubik(ModeInfo * mi)
-{
-       if (rubik != NULL) {
-               int         screen;
-
-               for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++) {
-                       rubikstruct *rp = &rubik[screen];
-
-                       free_rubik(rp);
-               }
-               (void) free((void *) rubik);
-               rubik = (rubikstruct *) NULL;
-       }
-       FreeAllGL(mi);
-}
-
 ENTRYPOINT void
 init_rubik(ModeInfo * mi)
 {
        rubikstruct *rp;
 
-       if (rubik == NULL) {
-               if ((rubik = (rubikstruct *) calloc(MI_NUM_SCREENS(mi),
-                                             sizeof (rubikstruct))) == NULL)
-                       return;
-       }
+       MI_INIT (mi, rubik, free_rubik);
        rp = &rubik[MI_SCREEN(mi)];
        rp->step = NRAND(90);
        rp->PX = ((float) LRAND() / (float) MAXRAND) * 2.0 - 1.0;
        rp->PY = ((float) LRAND() / (float) MAXRAND) * 2.0 - 1.0;
 
+    rp->trackball = gltrackball_init (True);
+
        if ((rp->glx_context = init_GL(mi)) != NULL) {
 
                reshape_rubik(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
                glDrawBuffer(GL_BACK);
                if (!pinit(mi)) {
-                       free_rubik(rp);
+                       free_rubik(mi);
                        if (MI_IS_VERBOSE(mi)) {
                                (void) fprintf(stderr,
                                        "Could not allocate memory for rubik\n");
@@ -1984,12 +1990,26 @@ draw_rubik(ModeInfo * mi)
                glScalef(Scale4Iconic * rp->WindH / rp->WindW, Scale4Iconic, Scale4Iconic);
        }
 
+# ifdef HAVE_MOBILE    /* Keep it the same relative size when rotated. */
+  {
+    GLfloat h = MI_HEIGHT(mi) / (GLfloat) MI_WIDTH(mi);
+    int o = (int) current_device_rotation();
+    if (o != 0 && o != 180 && o != -180) {
+      glScalef (1/h, h, 1); /* #### not quite right */
+      h = 1.8;
+      glScalef (h, h, h);
+    }
+  }
+# endif
+
+    gltrackball_rotate (rp->trackball);
+
        glRotatef(rp->step * 100, 1, 0, 0);
        glRotatef(rp->step * 95, 0, 1, 0);
        glRotatef(rp->step * 90, 0, 0, 1);
 
        if (!draw_cube(mi)) {
-               release_rubik(mi);
+               MI_ABORT(mi);
                return;
        }
         if (MI_IS_FPS(mi)) do_fps (mi);
@@ -2022,7 +2042,7 @@ draw_rubik(ModeInfo * mi)
                                rp->rotatestep += rp->anglestep;
                                if (rp->rotatestep > rp->degreeTurn) {
                                        if (!evalmovement(mi, rp->movement)) {
-                                               free_rubik(rp);
+                                               free_rubik(mi);
                                                if (MI_IS_VERBOSE(mi)) {
                                                        (void) fprintf(stderr,
                                                                "Could not allocate memory for rubik\n");
@@ -2038,7 +2058,7 @@ draw_rubik(ModeInfo * mi)
                if (rp->done) {
                        if (++rp->rotatestep > DELAY_AFTER_SOLVING)
                                if (!shuffle(mi)) {
-                                       free_rubik(rp);
+                                       free_rubik(mi);
                                        if (MI_IS_VERBOSE(mi)) {
                                                (void) fprintf(stderr,
                                                        "Could not allocate memory for rubik\n");
@@ -2066,7 +2086,7 @@ draw_rubik(ModeInfo * mi)
                                rp->rotatestep += rp->anglestep;
                                if (rp->rotatestep > rp->degreeTurn) {
                                        if (!evalmovement(mi, rp->movement)) {
-                                               free_rubik(rp);
+                                               free_rubik(mi);
                                                if (MI_IS_VERBOSE(mi)) {
                                                        (void) fprintf(stderr,
                                                                "Could not allocate memory for rubik\n");
@@ -2100,7 +2120,7 @@ change_rubik(ModeInfo * mi)
        if (!rp->glx_context)
                return;
        if (!pinit(mi)) {
-               free_rubik(rp);
+               free_rubik(mi);
                if (MI_IS_VERBOSE(mi)) {
                        (void) fprintf(stderr,
                                "Could not allocate memory for rubik\n");