* LSCM live transform is finally here!

This is a combined effort from Jens, Ton who finished the code here on my machine, and myself putting in the little menu toggle and committing :).

Turn it on and off in the UV/Image window menu UVs -> LSCM Live Transform. It recalculates the LSCM within the transform loop when you're transforming pinned vertices, so it gives realtime feedback - a real time saver! Note: this is much more powerful than proportional edit, since it's properly calculating LSCM using the correct edge angles, etc.

I recorded a quicky demo video here: http://orange.blender.org/wp-content/themes/orange/images/media/lscm_live.mov (quicktime animation codec)

3 files changed, 40 insertions, 1 deletions

diff --git a/source/blender/src/header_image.c b/source/blender/src/header_image.c
index d839323dd83..8a4603ec532 100644
--- a/source/blender/src/header_image.c
+++ b/source/blender/src/header_image.c
@@ -1007,6 +1007,10 @@ static void do_image_uvsmenu(void *arg, int event)
     case 10:
 		unwrap_lscm();
 		break;
+	case 11:
+		if(G.sima->flag & SI_LSCM_LIVE) G.sima->flag &= ~SI_LSCM_LIVE;
+		else G.sima->flag |= SI_LSCM_LIVE;
+		break;
 	}
 }
 
@@ -1033,9 +1037,11 @@ static uiBlock *image_uvsmenu(void *arg_unused)
 
 	uiDefBut(block, SEPR, 0, "", 0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");	
 
+	if(G.sima->flag & SI_LSCM_LIVE) uiDefIconTextBut(block, BUTM, 1, ICON_CHECKBOX_HLT, "LSCM Live Transform", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 11, "");
+	else uiDefIconTextBut(block, BUTM, 1, ICON_CHECKBOX_DEHLT, "LSCM Live Transform", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 11, "");
+	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "LSCM Unwrap|E", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 10, "");
 	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Unpin|Alt P", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 9, "");
 	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Pin|P", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 8, "");
-	uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "LSCM Unwrap|E", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 0, 10, "");
 
 	uiDefBut(block, SEPR, 0, "", 0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");	
 
diff --git a/source/blender/src/transform_generics.c b/source/blender/src/transform_generics.c
index 99b9c3d021a..edad524e383 100755
--- a/source/blender/src/transform_generics.c
+++ b/source/blender/src/transform_generics.c
@@ -272,6 +272,7 @@ void recalcData(TransInfo *t)
 	}
 	else if(t->spacetype==SPACE_IMAGE) {
 		flushTransUVs(t);
+		if (G.sima->flag & SI_LSCM_LIVE) unwrap_lscm_live();
 	}
 	else {
 		for(base= FIRSTBASE; base; base= base->next) {
diff --git a/source/blender/src/unwrapper.c b/source/blender/src/unwrapper.c
index c1bf0d3fa3f..045eea31625 100644
--- a/source/blender/src/unwrapper.c
+++ b/source/blender/src/unwrapper.c
@@ -1164,6 +1164,38 @@ void unwrap_lscm(void)
 	allqueue(REDRAWIMAGE, 0);
 }
 
+/* note; to make it quick work, brecht/jens: you can make it nice later! (ton) */
+void unwrap_lscm_live(void)
+{
+    int dopack = 1;
+	int res;
+	Mesh *me;
+	int totgroup, *groups=NULL, a;
+	
+	me= get_mesh(OBACT);
+	if(me==0 || me->tface==0) return;
+	
+	totgroup= make_seam_groups(me, &groups);
+	
+	if(totgroup==0) return;
+	
+	for(a=totgroup; a>0; a--) {
+		res= unwrap_lscm_face_group(me, groups, a);
+		if((res < 3) && (res > -1)) {
+			seam_group_normalize(me, groups, a);
+		}
+		else {
+			dopack = 0;
+		}
+		
+	}
+	
+	if(dopack) pack_seam_groups(me, groups, totgroup);
+	
+	MEM_freeN(groups);
+
+}
+
 /* Set tface seams based on edge data, uses hash table to find seam edges. */
 
 void set_seamtface()