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

[xscreensaver] / hacks / glx / flipscreen3d.c

diff --git a/hacks/glx/flipscreen3d.c b/hacks/glx/flipscreen3d.c
index 6d5844a99fe5753227dfcbb5081440aa8d5414ec..4d6ff301d7292ca380afcebc4f18ef6495b5e367 100644 (file)
--- a/hacks/glx/flipscreen3d.c
+++ b/hacks/glx/flipscreen3d.c
@@ -119,43 +119,25 @@ static Screenflip *screenflip = NULL;
 static const GLfloat viewer[] = {0.0, 0.0, 15.0};
 
 
+static void getSnapshot (ModeInfo *);
+
+
 ENTRYPOINT Bool
 screenflip_handle_event (ModeInfo *mi, XEvent *event)
 {
   Screenflip *c = &screenflip[MI_SCREEN(mi)];
 
-  if (event->xany.type == ButtonPress &&
-      event->xbutton.button == Button1)
-    {
-      c->button_down_p = True;
-      gltrackball_start (c->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)
-    {
-      c->button_down_p = False;
-      return True;
-    }
-  else if (event->xany.type == ButtonPress &&
-           (event->xbutton.button == Button4 ||
-            event->xbutton.button == Button5 ||
-            event->xbutton.button == Button6 ||
-            event->xbutton.button == Button7))
+  if (gltrackball_event_handler (event, c->trackball,
+                                 MI_WIDTH (mi), MI_HEIGHT (mi),
+                                 &c->button_down_p))
+    return True;
+  else if (screenhack_event_helper (MI_DISPLAY(mi), MI_WINDOW(mi), event))
     {
-      gltrackball_mousewheel (c->trackball, event->xbutton.button, 10,
-                              !!event->xbutton.state);
-      return True;
-    }
-  else if (event->xany.type == MotionNotify &&
-           c->button_down_p)
-    {
-      gltrackball_track (c->trackball,
-                         event->xmotion.x, event->xmotion.y,
-                         MI_WIDTH (mi), MI_HEIGHT (mi));
-      return True;
+      if (!c->waiting_for_image_p)
+        {
+          getSnapshot (mi);
+          return True;
+        }
     }
 
   return False;
@@ -322,12 +304,21 @@ static void drawgrid(void)
 static void display(Screenflip *c, int wire)
 {
   int frozen;
+  GLfloat rot = current_device_rotation();
 
   glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
   glLoadIdentity();
   gluLookAt(viewer[0], viewer[1], viewer[2], 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
   glPushMatrix();
 
+  glRotatef(rot, 0, 0, 1);
+  if ((rot >  45 && rot <  135) ||
+      (rot < -45 && rot > -135))
+    {
+      GLfloat s = c->winw / (GLfloat) c->winh;
+      glScalef (s, 1/s, 1);
+    }
+
   if (inposition(c)) {
     frozen = 0;
     glTranslatef(5 * sin(c->theta), 5 * sin(c->rho), 10 * cos(c->gamma) - 10);
@@ -340,7 +331,9 @@ static void display(Screenflip *c, int wire)
       if (random() % 2)
         c->dgamma = 1/60 - (float)(random() % 100)/3000;
     }
+    glRotatef(-rot, 0, 0, 1);
     gltrackball_rotate (c->trackball);
+    glRotatef(rot, 0, 0, 1);
     if (rotate) glRotatef(c->rot, c->rx, c->ry, c->rz);
 /* update variables with each frame */
     if(!c->button_down_p && !c->fadetime) {
@@ -450,7 +443,7 @@ ENTRYPOINT void init_screenflip(ModeInfo *mi)
  c = &screenflip[screen];
  c->window = MI_WINDOW(mi);
 
- c->trackball = gltrackball_init ();
+ c->trackball = gltrackball_init (False);
 
  if ((c->glx_context = init_GL(mi)) != NULL) {
       reshape_screenflip(mi, MI_WIDTH(mi), MI_HEIGHT(mi));