0026889: Very poor mesh result from shape

Adding test case for the problem.
The issue has been fixed by a patch for #26106.

tests/perf/mesh/bug26889_1

@@ -0,0 +1,29 @@
+puts "========="
+puts "0026889: Very poor mesh result from shape"
+puts "========="
+puts ""
+
+pload XDE
+
+stepread [locate_data_file bug26889_export.step] a *
+
+dchrono t restart
+incmesh a_1 0.01 1
+dchrono t stop counter incmesh
+
+checktrinfo a_1 -tri 743149 -nod 372395 -defl 0.081028355715069861
+
+set log [tricheck a_1]
+if { [llength $log] != 0 } {
+  puts "Error : Invalid mesh"
+} else {
+  puts "Mesh is OK"
+}
+
+
+vinit
+vdefaults -autoTriang 0
+vsetdispmode 1
+vdisplay a_1
+vfit
+checkview -screenshot -3d -path ${imagedir}/${test_image}.png

tests/perf/mesh/bug26889_2

@@ -1,25 +1,28 @@
 puts "========="
-puts "CR26889"
+puts "0026889: Very poor mesh result from shape"
 puts "========="
 puts ""
-###############################################
-# Very poor mesh result from shape
-###############################################
 
 pload XDE
 
 stepread [locate_data_file bug26889_export.step] a *
 
-dlog reset
-dlog on
-
 dchrono t restart
 incmesh a_1 0.1 1
 dchrono t stop counter incmesh
 
-checktrinfo a_1 -tri -nod
+checktrinfo a_1 -tri 182273 -nod 91484 -defl 0.11671770612283024
+
+set log [tricheck a_1]
+if { [llength $log] != 0 } {
+  puts "Error : Invalid mesh"
+} else {
+  puts "Mesh is OK"
+}
+
 
 vinit
+vdefaults -autoTriang 0
 vsetdispmode 1
 vdisplay a_1
 vfit

tests/perf/mesh/bug26889_3

@@ -0,0 +1,29 @@
+puts "========="
+puts "0026889: Very poor mesh result from shape"
+puts "========="
+puts ""
+
+pload XDE
+
+stepread [locate_data_file bug26889_export.step] a *
+
+dchrono t restart
+incmesh a_1 1.0 1
+dchrono t stop counter incmesh
+
+checktrinfo a_1 -tri 73119 -nod 36828 -defl 1.0
+
+set log [tricheck a_1]
+if { [llength $log] != 0 } {
+  puts "Error : Invalid mesh"
+} else {
+  puts "Mesh is OK"
+}
+
+
+vinit
+vdefaults -autoTriang 0
+vsetdispmode 1
+vdisplay a_1
+vfit
+checkview -screenshot -3d -path ${imagedir}/${test_image}.png