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

[xscreensaver] / hacks / glx / cube21.c

diff --git a/hacks/glx/cube21.c b/hacks/glx/cube21.c
index 1379b4cf9f36b02735a6574950071d73f470b681..0cfd2123f62d80091a42030feaa9293f40b676b2 100644 (file)
--- a/hacks/glx/cube21.c
+++ b/hacks/glx/cube21.c
@@ -26,7 +26,7 @@
 
 /* TODO:
  *  some simple "solve mode"
- *  use rotator and trackball
+ *  use rotator
  */
 
 /*-
@@ -46,9 +46,11 @@
                    "*wireframe:     False         \n"
 
 # define refresh_cube21 0
-# define cube21_handle_event 0
+# define release_cube21 0
 #include "xlockmore.h"
 
+#include "gltrackball.h"
+
 #ifdef USE_GL
 
 #define DEF_SPIN        "True"
@@ -57,7 +59,7 @@
 #define DEF_RANDOMIZE   "True"
 #define DEF_SPINSPEED   "1.0"
 #define DEF_ROTSPEED    "3.0"
-#define DEF_WANDERSPEED "1.0"
+#define DEF_WANDERSPEED "0.02"
 #define DEF_WAIT        "40.0"
 #define DEF_CUBESIZE    "0.7"
 #define DEF_COLORMODE   "six"
@@ -127,7 +129,7 @@ ENTRYPOINT ModeSpecOpt cube21_opts = {countof(opts), opts, countof(vars), vars,
 
 #ifdef USE_MODULES
 ModStruct   cube21_description =
-{ "cube21", "init_cube21", "draw_cube21", "release_cube21",
+{ "cube21", "init_cube21", "draw_cube21", NULL,
   "draw_cube21", "change_cube21", NULL, &cube21_opts,
   25000, 1, 1, 1, 1.0, 4, "",
   "Shows randomly shuffling Cube 21", 0, NULL
@@ -178,6 +180,9 @@ typedef struct {
   GLfloat texp, texq, posc[6];
   GLfloat color_inner[4];
 
+  Bool button_down_p;
+  trackball_state *trackball;
+
 } cube21_conf;
 
 static cube21_conf *cube21 = NULL;
@@ -510,8 +515,21 @@ static Bool draw_main(ModeInfo *mi, cube21_conf *cp)
   else
     glTranslatef(0, 0, zpos);
   glScalef(size, size, size);
+
+# 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, 1/h, 1/h);
+  }
+# endif
+
   glRotatef(cp->xrot, 1.0, 0.0, 0.0);
   glRotatef(cp->yrot, 0.0, 1.0, 0.0);
+
+  gltrackball_rotate (cp->trackball);
+
   if(cp->wire) glColor3f(0.7, 0.7, 0.7);
   switch(cp->state) {
     case CUBE21_PAUSE1:
@@ -692,6 +710,11 @@ static void init_gl(ModeInfo *mi)
     tex = False;
     cp->cmat = False;
   }
+
+# ifdef HAVE_JWZGLES /* #### glPolygonMode other than GL_FILL unimplemented */
+  cp->wire = 0;
+# endif
+
   if(cp->wire) {
     glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
     return;
@@ -702,7 +725,6 @@ static void init_gl(ModeInfo *mi)
     cp->color_inner[0] = cp->color_inner[1] = cp->color_inner[2] = 1.0;
 
   glClearDepth(1.0);
-  glClearColor(0.0, 0.0, 0.0, 1.0);
   glDrawBuffer(GL_BACK);
   glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
   glShadeModel(GL_FLAT);
@@ -834,36 +856,37 @@ ENTRYPOINT void reshape_cube21(ModeInfo *mi, int width, int height)
   glClear(GL_COLOR_BUFFER_BIT);
 }
 
-ENTRYPOINT void release_cube21(ModeInfo *mi) 
+ENTRYPOINT Bool
+cube21_handle_event (ModeInfo *mi, XEvent *event)
 {
-  if (cube21 != NULL) {
-    int screen;
-    for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++) {
-      cube21_conf *cp = &cube21[screen];
-      if (cp->glx_context) {
-        cp->glx_context = NULL;
-      }
-    }
-    free((void *)cube21);
-    cube21 = NULL;
-  }
-  FreeAllGL(mi);
+  cube21_conf *cp = &cube21[MI_SCREEN(mi)];
+
+  if (gltrackball_event_handler (event, cp->trackball,
+                                 MI_WIDTH (mi), MI_HEIGHT (mi),
+                                 &cp->button_down_p))
+    return True;
+
+  return False;
 }
 
+
 ENTRYPOINT void init_cube21(ModeInfo *mi) 
 {
   cube21_conf *cp;
-  if(!cube21) {
-    cube21 = (cube21_conf *)calloc(MI_NUM_SCREENS(mi), sizeof(cube21_conf));
-    if(!cube21) return;
-  }
+  MI_INIT(mi, cube21, NULL);
   cp = &cube21[MI_SCREEN(mi)];
 
+  cp->trackball = gltrackball_init (False);
+
   if(!cp->texp) {
     init_posc(cp);
     make_texture(cp);
   }
 
+#ifdef HAVE_MOBILE
+  size *= 2;
+#endif
+
   if ((cp->glx_context = init_GL(mi)) != NULL) {
     init_gl(mi);
     init_cp(cp);
@@ -885,7 +908,7 @@ ENTRYPOINT void draw_cube21(ModeInfo * mi)
   mi->polygon_count = 0;
   glXMakeCurrent(display, window, *(cp->glx_context));
   if (!draw_main(mi, cp)) {
-    release_cube21(mi);
+    MI_ABORT(mi);
     return;
   }
   if (MI_IS_FPS(mi)) do_fps (mi);