X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=moebius2.git;a=blobdiff_plain;f=view.c;h=cc86803594841154686a48adb5c77aff1bb5b316;hp=cfa39753f1e89d29329ce115d1328c98c9914f57;hb=3c0d58c901fd6f8265dad93f096d2ae03866fc6e;hpb=62f97dcbc53754ef8a81add86946e54825c4c096

diff --git a/view.c b/view.c
index cfa3975..cc86803 100644
--- a/view.c
+++ b/view.c
@@ -25,6 +25,7 @@ static GSL_MATRIX(transform);
 static FILE *input_f;
 static struct stat input_stab;
 static const char *input_filename;
+static int pause_updates;
 
 static void read_input(void) {
   int r;
@@ -84,9 +85,12 @@ static void generate_display_list(void) {
      * orientable so it shouldn't matter).  Picking the parallelogram
      * to our right avoids getting it wrong at the join.
      */
+//if ((vb & YMASK) > Y1) continue;
+//if ((vb & XMASK) > 2) continue; 
     for (e=0; e<V6; e++) ve[e]= EDGE_END2(vb,e);
     assert(ve[0]>=0);
     if (ve[5]>=0) addtriangle(vb,ve[0],ve[5]);
+//continue;
     if (ve[1]>=0) addtriangle(vb,ve[1],ve[0]);
   }
 
@@ -97,7 +101,7 @@ static void generate_display_list(void) {
       if (vertex_in_triangles[v] != expd) {
 	fprintf(stderr,"vertex %02x used for %d triangles, expected %d\n",
 		v, vertex_in_triangles[v], expd);
-	abort();
+//	abort();
       }
     }
     vertex_in_triangles_checked= 1;
@@ -107,7 +111,7 @@ static void generate_display_list(void) {
 static int dl_compare(const void *tav, const void *tbv) {
   int i;
   const Triangle *const *tap= tav, *ta= *tap;
-  const Triangle *const *tbp= tbp, *tb= *tbp;
+  const Triangle *const *tbp= tbv, *tb= *tbp;
   double za=0, zb=0;
   for (i=0; i<3; i++) {
     za += ta->vertex[i][2];
@@ -148,7 +152,7 @@ static void drawtriangle(const Triangle *t) {
   int i;
 
   for (i=0; i<3; i++) {
-    double *v= t->vertex[i];
+    const double *v= t->vertex[i];
     double x= v[0];
     double y= v[1];
     double z= v[2];
@@ -170,7 +174,7 @@ static void drawtriangle(const Triangle *t) {
 
 static const unsigned long core_event_mask=
   ButtonPressMask|ButtonReleaseMask|StructureNotifyMask|ButtonMotionMask|
-  KeyPressMask;
+  KeyPressMask|SubstructureNotifyMask;
 
 static void mkpixmaps(void) {
   for (currentbuffer=0; currentbuffer<2; currentbuffer++) {
@@ -550,16 +554,22 @@ static void event_key(XKeyEvent *e) {
     return;
   }
 
-  if (!strcmp(buf,"q")) exit(0);
-  if (!strcmp(buf,"w")) {
+  if (!strcmp(buf,"q"))
+    exit(0);
+  else if (!strcmp(buf,"p"))
+    pause_updates= !pause_updates;
+  else if (!strcmp(buf,"w")) {
     wireframe= !wireframe;
     show();
     return;
-  }
-  if (!strcmp(buf,"d")) {
+  } else if (!strcmp(buf,"d")) {
     eyes_apart= eyes_apart>0 ? eyes_apart_min : eyes_apart_preferred;
     show();
     return;
+  } else {
+    printf("unknown key keycode=%d state=0x%x char=%c 0x%02x\n",
+	   e->keycode, e->state, buf[0]>' ' && buf[0]<127 ? buf[0] : '?',
+	   buf[0]);
   }
 }
 
@@ -655,8 +665,11 @@ int main(int argc, const char *const *argv) {
     polls[i].fd= ConnectionNumber(display);
     polls[i].events= wantedevents;
 
-    r= poll(polls, nxfds+1, motion_deferred ? 0 : 200);
-    if (r<0) diee("poll");
+    r= poll(polls, nxfds+1, motion_deferred ? 0 : pause_updates ? -1 : 200);
+    if (r<0) {
+      if (errno==EINTR) continue;
+      diee("poll");
+    }
 
     for (i=0; i<nxfds; i++)
       if (polls[i].revents)
@@ -668,7 +681,8 @@ int main(int argc, const char *const *argv) {
 	event_motion(motion_x, motion_y);
 	motion_deferred=0;
       }
-      check_input();
+      if (!pause_updates)
+	check_input();
       continue;
     }