From http://www.jwz.org/xscreensaver/xscreensaver-5.39.tar.gz

[xscreensaver] / hacks / glx / voronoi.c

diff --git a/hacks/glx/voronoi.c b/hacks/glx/voronoi.c
index 1356b25ca0c42c96c5c9af692b93273b377efdbc..895f96716fdc17b3c338f59976781105e1a28638 100644 (file)
--- a/hacks/glx/voronoi.c
+++ b/hacks/glx/voronoi.c
@@ -1,4 +1,4 @@
-/* voronoi, Copyright (c) 2007 Jamie Zawinski <jwz@jwz.org>
+/* voronoi, Copyright (c) 2007-2018 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
@@ -11,9 +11,9 @@
 
 #define DEFAULTS        "*delay:        20000              \n" \
                         "*showFPS:      False              \n" \
+                       "*suppressRotationAnimation: True\n" \
 
-
-# define refresh_voronoi 0
+# define free_voronoi 0
 # define release_voronoi 0
 #undef countof
 #define countof(x) (sizeof((x))/sizeof((*x)))
@@ -49,6 +49,7 @@ typedef struct {
   node *dragging;
   int ncolors;
   XColor *colors;
+  int point_size;
 
   enum { MODE_WAITING, MODE_ADDING, MODE_ZOOMING } mode;
   int adding;
@@ -142,31 +143,20 @@ cone (void)
   int i;
   int faces = 64;
   GLfloat step = M_PI * 2 / faces;
-  GLfloat s2 = step/2;
-  GLfloat th;
-  GLfloat x, y, x0, y0;
-
-  glBegin(GL_TRIANGLES);
-
-  th = 0;
-  x = 1;
-  y = 0;
-  x0 = cos (s2);
-  y0 = sin (s2);
+  GLfloat th = 0;
+  GLfloat x = 1;
+  GLfloat y = 0;
 
+  glBegin(GL_TRIANGLE_FAN);
+  glVertex3f (0, 0, 1);
   for (i = 0; i < faces; i++)
     {
-      glVertex3f(0,  0, 1);
-      glVertex3f(x, y, 0);
-
+      glVertex3f (x, y, 0);
       th += step;
-      x0 = cos (th + s2);
-      y0 = sin (th + s2);
-      x  = cos (th);
-      y  = sin (th);
-
-      glVertex3f(x, y, 0);
+      x = cos (th);
+      y = sin (th);
     }
+  glVertex3f (1, 0, 0);
   glEnd();
   return faces;
 }
@@ -264,11 +254,11 @@ draw_cells (ModeInfo *mi)
 
   glClear (GL_DEPTH_BUFFER_BIT);
 
-  if (point_size <= 0)
+  if (vp->point_size <= 0)
     ;
-  else if (point_size < 3)
+  else if (vp->point_size < 3)
     {
-      glPointSize (point_size);
+      glPointSize (vp->point_size);
       for (nn = vp->nodes; nn; nn = nn->next)
         {
           glBegin (GL_POINTS);
@@ -284,7 +274,7 @@ draw_cells (ModeInfo *mi)
         {
           int w = MI_WIDTH (mi);
           int h = MI_HEIGHT (mi);
-          int s = point_size;
+          int s = vp->point_size;
           int i;
 
           glColor4fv (nn->color2);
@@ -292,7 +282,7 @@ draw_cells (ModeInfo *mi)
           glTranslatef (nn->x, nn->y, 0);
           glScalef (1.0 / w * s, 1.0 / h * s, 1);
 
-          glLineWidth (point_size / 10);
+          glLineWidth (vp->point_size / 10);
           nn->rot += (nn->rot < 0 ? -1 : 1);
           glRotatef (nn->rot, 0, 0, 1);
 
@@ -310,6 +300,25 @@ draw_cells (ModeInfo *mi)
           glPopMatrix();
         }
     }
+
+#if 0
+  glPushMatrix();
+  glColor3f(1,1,1);
+  glBegin(GL_LINE_LOOP);
+  glVertex3f(0,0,0);
+  glVertex3f(1,0,0);
+  glVertex3f(1,1,0);
+  glVertex3f(0,1,0);
+  glEnd();
+  glScalef(0.25, 0.25, 1);
+  glBegin(GL_LINE_LOOP);
+  glVertex3f(0,0,0);
+  glVertex3f(1,0,0);
+  glVertex3f(1,1,0);
+  glVertex3f(0,1,0);
+  glEnd();
+  glPopMatrix();
+#endif
 }
 
 
@@ -326,6 +335,27 @@ reshape_voronoi (ModeInfo *mi, int width, int height)
   glLoadIdentity();
   glOrtho (0, 1, 1, 0, -1, 1);
 
+# ifdef HAVE_MOBILE    /* So much WTF */
+  {
+    int rot = current_device_rotation();
+
+    glTranslatef (0.5, 0.5, 0);
+    //  glScalef(0.19, 0.19, 0.19);
+
+    if (rot == 180 || rot == -180) {
+      glTranslatef (1, 1, 0);
+    } else if (rot == 90 || rot == -270) {
+      glRotatef (180, 0, 0, 1);
+      glTranslatef (0, 1, 0);
+    } else if (rot == -90 || rot == 270) {
+      glRotatef (180, 0, 0, 1);
+      glTranslatef (1, 0, 0);
+    }
+
+    glTranslatef(-0.5, -0.5, 0);
+  }
+# endif
+
   glMatrixMode(GL_MODELVIEW);
   glLoadIdentity();
 
@@ -337,7 +367,7 @@ static node *
 find_node (ModeInfo *mi, GLfloat x, GLfloat y)
 {
   voronoi_configuration *vp = &vps[MI_SCREEN(mi)];
-  int ps = (point_size < 5 ? 5 : point_size);
+  int ps = (vp->point_size < 5 ? 5 : vp->point_size);
   GLfloat hysteresis = (1.0 / MI_WIDTH (mi)) * ps;
   node *nn;
   for (nn = vp->nodes; nn; nn = nn->next)
@@ -449,22 +479,16 @@ init_voronoi (ModeInfo *mi)
 {
   voronoi_configuration *vp;
 
-  if (!vps) {
-    vps = (voronoi_configuration *)
-      calloc (MI_NUM_SCREENS(mi), sizeof (voronoi_configuration));
-    if (!vps) {
-      fprintf(stderr, "%s: out of memory\n", progname);
-      exit(1);
-    }
-
-    vp = &vps[MI_SCREEN(mi)];
-  }
+  MI_INIT (mi, vps);
 
   vp = &vps[MI_SCREEN(mi)];
 
   vp->glx_context = init_GL(mi);
 
-  if (point_size < 0) point_size = 10;
+  vp->point_size = point_size;
+  if (vp->point_size < 0) vp->point_size = 10;
+
+  if (MI_WIDTH(mi) > 2560) vp->point_size *= 2;  /* Retina displays */
 
   vp->ncolors = 128;
   vp->colors = (XColor *) calloc (vp->ncolors, sizeof(XColor));