From f8c4ae5c47afcdc339a0d85cfefeb577134efca2 Mon Sep 17 00:00:00 2001
From: Ivan Mahonin <bh@icystar.com>
Date: Oct 26 2025 10:24:17 +0000
Subject: jigsaw: fix2


---

diff --git a/projects/jigsaw/menu.c b/projects/jigsaw/menu.c
index c8b7d84..757fecf 100644
--- a/projects/jigsaw/menu.c
+++ b/projects/jigsaw/menu.c
@@ -33,6 +33,7 @@ static Animation loadThumb(const char *imgname, Framebuffer fb, int w, int h) {
                               else tw = (int)round(h/(double)fh*fw);
   if (tw < 1) tw = 1; else if (tw > w) tw = w;
   if (th < 1) th = 1; else if (th > h) th = h;
+  DBG("[%dx%d] -> [%dx%d]", fw, fh, tw, th);
   
   saveState();
   resetState();
@@ -56,8 +57,10 @@ static Animation loadThumb(const char *imgname, Framebuffer fb, int w, int h) {
     } else
     if (!imageSave(tpath, iw, ih, pixels)) {
       WRN("loadThumb: cannot save thumbnail to: %s", tpath);
+      thumb = createAnimationFromImageEx(iw, ih, pixels, FALSE, FALSE, TRUE, TRUE);
+    } else {
+      thumb = createAnimationEx(tpath, TRUE, FALSE, FALSE);
     }
-    thumb = createAnimationFromImageEx(iw, ih, pixels, FALSE, FALSE, TRUE, TRUE);
     free(pixels);
   } else {
     WRN("loadThumb: cannot capture vieport: %s", imgpath);
diff --git a/projects/jigsaw/phisics.group.c b/projects/jigsaw/phisics.group.c
index a346631..8d167f1 100644
--- a/projects/jigsaw/phisics.group.c
+++ b/projects/jigsaw/phisics.group.c
@@ -41,7 +41,7 @@ void phGroupRecalc(PhGroup *g) {
     n->gk = d2 > PRECISION2 ? vdiv(d, d2) : vzero();
   }
   
-  g->dx = vec(1, 0); 
+  if (!(vlen2(g->dx) > PRECISION2)) g->dx = vec(1, 0); 
 }
 
 
diff --git a/projects/jigsaw/puzzle.chunk.c b/projects/jigsaw/puzzle.chunk.c
index ba98354..9540cc9 100644
--- a/projects/jigsaw/puzzle.chunk.c
+++ b/projects/jigsaw/puzzle.chunk.c
@@ -117,6 +117,7 @@ void chunkMerge(Chunk *a, Chunk *b) {
   Puzzle *pz = a->pz;
   PhGroup *pa = a->parent, *pb = b->parent;
   phGroupMerge(pa, pb);
+  phGroupFix(pa, !pz->turn);
   
   for(int r = 0; r < pz->rows; ++r)
   for(int c = 0; c < pz->cols; ++c) {