[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [38382] branches/soc-2011-avocado/blender/ source/blender/editors/mesh/autoseam_tools.c: Fix in stretch minimization process and implementation of average strecth calculation and maximum stretch calculation for a mesh .

[shuvro sarker]

Revision: 38382
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=38382
Author:   shuvro
Date:     2011-07-14 04:17:37 +0000 (Thu, 14 Jul 2011)
Log Message:
-----------
Fix in stretch minimization process and implementation of average strecth calculation and maximum stretch calculation for a mesh.

Modified Paths:
--------------
    branches/soc-2011-avocado/blender/source/blender/editors/mesh/autoseam_tools.c

Modified: branches/soc-2011-avocado/blender/source/blender/editors/mesh/autoseam_tools.c
===================================================================
--- branches/soc-2011-avocado/blender/source/blender/editors/mesh/autoseam_tools.c	2011-07-14 03:28:31 UTC (rev 38381)
+++ branches/soc-2011-avocado/blender/source/blender/editors/mesh/autoseam_tools.c	2011-07-14 04:17:37 UTC (rev 38382)
@@ -34,6 +34,7 @@
 
 
 
+
 /* ------------------------ Code from Andrea ------------------------ */
 static void autoseam_clear_seam(BMesh *bm)
 {
@@ -315,7 +316,7 @@
 
 }
 
-float stretch_of_mesh(bContext *C)
+float total_stretch_of_mesh(bContext *C)
 {
     int i;
     Scene *scene= CTX_data_scene(C);
@@ -339,7 +340,35 @@
     return total_stretch;
 }
 
+float average_stretch_of_mesh(bContext *C)
+{
+    Object *obedit= CTX_data_edit_object(C);
+	BMEditMesh *em= ((Mesh *)obedit->data)->edit_btmesh;
+	return (float)(total_stretch_of_mesh(C)/em->tottri);
+ }
 
+float maximum_stretch_of_mesh(bContext *C)
+{
+    int i;
+    float max_stretch = -FLT_MAX;
+    float temp;
+    Scene *scene= CTX_data_scene(C);
+    Object *obedit= CTX_data_edit_object(C);
+    BMEditMesh *em= ((Mesh *)obedit->data)->edit_btmesh;
+	BMesh *bm = em->bm;
+    
+    ED_unwrap_lscm(scene, obedit, TRUE);
+    
+    for (i=0; i < em->tottri; i++) {
+        temp = stretch_of_triangulated_face(em->looptris[i], bm);
+        if(temp > max_stretch){
+            max_stretch = temp;
+        }
+    }
+    
+    return max_stretch;
+}
+
 int generate_seam_recursive(BMesh *bm, AUTOSEAM_Adjacency adj, AUTOSEAM_Adjacency adj_big, int recursion_depth, bContext *C, float stretch)
 {
 	int s;
@@ -352,16 +381,37 @@
 	AUTOSEAM_Adjacency adj_plus;
 	AUTOSEAM_Adjacency adj_minus;
 	
+    
     if(stretch < 0.0){
-        stretch = stretch_of_mesh(C);
+        //stretch = stretch_of_mesh(C);
+        stretch = FLT_MAX;
     }
+    /* This is for total_stretch */
     else{
-        float temp = stretch_of_mesh(C);
+        float temp = total_stretch_of_mesh(C);
         /* stretch is increasing, so stop here*/
         if(temp > stretch) return 0;
         else stretch = temp;
     }
+    /* This is for average stretch */
+//    else{
+//        float temp = average_stretch_of_mesh(C);
+//        /* stretch is increasing, so stop here*/
+//        if(temp > stretch) return 0;
+//        else stretch = temp;
+//    }
+//    
+//    /* This is for maximum stretch of the mesh */
+//    else{
+//        float temp = maximum_stretch_of_mesh(C);
+//        /* stretch is increasing, so stop here*/
+//        if(temp > stretch) return 0;
+//        else stretch = temp;
+//    }
     
+    
+    
+    
 	if(!recursion_depth) {
 		autoseam_delete_adjacency(adj);
 		return 0;