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

[xscreensaver] / hacks / glx / molecule.c

diff --git a/hacks/glx/molecule.c b/hacks/glx/molecule.c
index b5e6e8420f945e268a3f65cfe77048e58c318016..57827b2b3d2e6fdbbbf30e374454653218ed5639 100644 (file)
--- a/hacks/glx/molecule.c
+++ b/hacks/glx/molecule.c
@@ -1,4 +1,4 @@
-/* molecule, Copyright (c) 2001-2014 Jamie Zawinski <jwz@jwz.org>
+/* molecule, Copyright (c) 2001-2016 Jamie Zawinski <jwz@jwz.org>
  * Draws molecules, based on coordinates from PDB (Protein Data Base) files.
  *
  * Permission to use, copy, modify, distribute, and sell this software and its
@@ -12,7 +12,7 @@
 
 
 /* Documentation on the PDB file format:
-   http://en.wikipedia.org/wiki/Protein_Data_Bank_%28file_format%29
+   https://en.wikipedia.org/wiki/Protein_Data_Bank_%28file_format%29
    http://www.wwpdb.org/docs.html
    http://www.wwpdb.org/documentation/format32/v3.2.html
    http://www.wwpdb.org/documentation/format32/sect9.html
@@ -31,6 +31,7 @@
        "*titleFont:  -*-helvetica-medium-r-normal-*-*-180-*-*-*-*-*-*\n" \
                        "*noLabelThreshold:    150    \n" \
                        "*wireframeThreshold:  150    \n" \
+                       "*suppressRotationAnimation: True\n" \
 
 # define refresh_molecule 0
 # define release_molecule 0
@@ -91,7 +92,7 @@ static const char * const builtin_pdb_data[] = {
 };
 
 
-#ifndef USE_IPHONE
+#ifndef HAVE_MOBILE
 # define LOAD_FILES
 #endif
 
@@ -479,9 +480,12 @@ draw_bounding_box (ModeInfo *mi)
 
   glColor3f (c2[0], c2[1], c2[2]);
   glBegin(GL_LINES);
-  if (x1 > 0) x1 = 0; if (x2 < 0) x2 = 0;
-  if (y1 > 0) y1 = 0; if (y2 < 0) y2 = 0;
-  if (z1 > 0) z1 = 0; if (z2 < 0) z2 = 0;
+  if (x1 > 0) x1 = 0;
+  if (x2 < 0) x2 = 0;
+  if (y1 > 0) y1 = 0;
+  if (y2 < 0) y2 = 0;
+  if (z1 > 0) z1 = 0;
+  if (z2 < 0) z2 = 0;
   glVertex3f(x1, 0,  0);  glVertex3f(x2, 0,  0); 
   glVertex3f(0 , y1, 0);  glVertex3f(0,  y2, 0); 
   glVertex3f(0,  0,  z1); glVertex3f(0,  0,  z2); 
@@ -1196,6 +1200,14 @@ reshape_molecule (ModeInfo *mi, int width, int height)
              0.0, 0.0, 0.0,
              0.0, 1.0, 0.0);
 
+# ifdef HAVE_MOBILE    /* Keep it the same relative size when rotated. */
+  {
+    int o = (int) current_device_rotation();
+    if (o != 0 && o != 180 && o != -180)
+      glScalef (1/h, 1/h, 1/h);
+  }
+# endif
+
   glClear(GL_COLOR_BUFFER_BIT);
 }
 
@@ -1276,14 +1288,7 @@ init_molecule (ModeInfo *mi)
   molecule_configuration *mc;
   int wire;
 
-  if (!mcs) {
-    mcs = (molecule_configuration *)
-      calloc (MI_NUM_SCREENS(mi), sizeof (molecule_configuration));
-    if (!mcs) {
-      fprintf(stderr, "%s: out of memory\n", progname);
-      exit(1);
-    }
-  }
+  MI_INIT (mi, mcs, NULL);
 
   mc = &mcs[MI_SCREEN(mi)];
 
@@ -1368,9 +1373,6 @@ draw_labels (ModeInfo *mi)
   if (!do_labels)
     return;
 
-  if (!wire)
-    glDisable (GL_LIGHTING);   /* don't light fonts */
-
   for (i = 0; i < m->natoms; i++)
     {
       molecule_atom *a = &m->atoms[i];
@@ -1384,7 +1386,7 @@ draw_labels (ModeInfo *mi)
 
       /* First, we translate the origin to the center of the atom.
 
-         Then we retrieve the prevailing modelview matrix (which
+         Then we retrieve the prevailing modelview matrix, which
          includes any rotation, wandering, and user-trackball-rolling
          of the scene.
 
@@ -1420,25 +1422,24 @@ draw_labels (ModeInfo *mi)
       glRotatef (current_device_rotation(), 0, 0, 1);  /* right side up */
 
       {
-        int h;
-        int w = texture_string_width (mc->atom_font, a->label, &h);
-        GLfloat s = 1.0 / h;           /* Scale to unit */
+        XCharStruct e;
+        int w, h;
+        GLfloat s;
+
+        texture_string_metrics (mc->atom_font, a->label, &e, 0, 0);
+        w = e.width;
+        h = e.ascent + e.descent;
+
+        s = 1.0 / h;                   /* Scale to unit */
         s *= mc->overall_scale;                /* Scale to size of atom */
         s *= 0.8;                      /* Shrink a bit */
         glScalef (s, s, 1);
-        glTranslatef (-w * 0.5, h * 0.3 - h, 0);
+        glTranslatef (-w/2, -h/2, 0);
         print_texture_string (mc->atom_font, a->label);
       }
 
       glPopMatrix();
     }
-
-  /* More efficient to always call glEnable() with correct values
-     than to call glPushAttrib()/glPopAttrib(), since reading
-     attributes from GL does a round-trip and  stalls the pipeline.
-   */
-  if (!wire)
-    glEnable (GL_LIGHTING);
 }