From http://www.jwz.org/xscreensaver/xscreensaver-5.30.tar.gz

[xscreensaver] / hacks / glx / cube21.c

diff --git a/hacks/glx/cube21.c b/hacks/glx/cube21.c
index 1379b4cf9f36b02735a6574950071d73f470b681..542c93699e3953bde0e1b36708b3edd435e8c651 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 +46,10 @@
                    "*wireframe:     False         \n"
 
 # define refresh_cube21 0
-# define cube21_handle_event 0
 #include "xlockmore.h"
 
+#include "gltrackball.h"
+
 #ifdef USE_GL
 
 #define DEF_SPIN        "True"
@@ -57,7 +58,7 @@
 #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"
@@ -178,6 +179,9 @@ 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;
@@ -510,6 +514,9 @@ static Bool draw_main(ModeInfo *mi, cube21_conf *cp)
   else
     glTranslatef(0, 0, zpos);
   glScalef(size, size, size);
+
+  gltrackball_rotate (cp->trackball);
+
   glRotatef(cp->xrot, 1.0, 0.0, 0.0);
   glRotatef(cp->yrot, 0.0, 1.0, 0.0);
   if(cp->wire) glColor3f(0.7, 0.7, 0.7);
@@ -692,6 +699,11 @@ 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 +714,6 @@ 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);
@@ -834,6 +845,20 @@ ENTRYPOINT void reshape_cube21(ModeInfo *mi, int width, int height)
   glClear(GL_COLOR_BUFFER_BIT);
 }
 
+ENTRYPOINT Bool
+cube21_handle_event (ModeInfo *mi, XEvent *event)
+{
+  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 release_cube21(ModeInfo *mi) 
 {
   if (cube21 != NULL) {
@@ -859,6 +884,8 @@ ENTRYPOINT void init_cube21(ModeInfo *mi)
   }
   cp = &cube21[MI_SCREEN(mi)];
 
+  cp->trackball = gltrackball_init (False);
+
   if(!cp->texp) {
     init_posc(cp);
     make_texture(cp);