star-cad

commit eb87c7ea451ea34f17859fff00357137ac7f8493
parent a9b7b8061b28c432ba718dc7c95afc3f601198d0
Author: Benjamin Piaud <benjamin.piaud@meso-star.com>
Date:   Mon,  1 Aug 2022 11:51:04 +0200

Add is_meshed parameter to a scene. Set outwardorientation before stl
export

Diffstat:
M
src/scad.c
 | 
15
++++++++++++---
M
src/scad_scene.c
 | 
4
+++-
M
src/scad_scene.h
 | 
1
+

3 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/src/scad.c b/src/scad.c
@@ -274,9 +274,13 @@ scad_stl_export
       }
 #endif
     }
-    ERR(scad_device_synchronize(geometry->scene->device));
-    gmshModelMeshGenerate(2, &ierr);
-    ERR(gmsh_err_to_res_T(ierr));
+    /* WARNING : an export may be prohibited without a prior conformal mesh*/
+    if (!geometry->scene->is_meshed) {
+      ERR(scad_device_synchronize(geometry->scene->device));
+      gmshModelMeshGenerate(2, &ierr);
+      ERR(gmsh_err_to_res_T(ierr));
+      geometry->scene->is_meshed = 1;
+    }
     ERR(scad_device_synchronize(geometry->scene->device));
 
     gmshModelGetBoundary(data, sz, &tagout, &tagoutn, 1, 0, 0, &ierr);
@@ -296,6 +300,11 @@ scad_stl_export
       goto error;
     }
 
+    for(i = 0; i < sz/2; i++) {
+      gmshModelMeshSetOutwardOrientation(data[2*i+1], &ierr);
+      ERR(gmsh_err_to_res_T(ierr));
+    }
+
     tcount = 0;
     for(i = 0; i < tagoutn/2; i++) {
       gmshModelMeshGetNodesByElementType(2, nodeTags+i, nodeTags_n+i,
diff --git a/src/scad_scene.c b/src/scad_scene.c
@@ -99,6 +99,7 @@ scad_scene_create
   htable_names_init(device->allocator, &scn->geometry_names);
   scn->device = device;
   set_name(scn);
+  scn->is_meshed = 0;
   ref_init(&scn->ref);
   SCAD(device_ref_get(scn->device));
 
@@ -144,7 +145,8 @@ scad_scene_conformal_mesh
   ERR(gmsh_err_to_res_T(ierr));
   gmshModelMeshGenerate(2, &ierr);
   ERR(gmsh_err_to_res_T(ierr));
-
+  scene->is_meshed = 1;
+ 
 exit:
   if(dimTags) free(dimTags);
   return res;
diff --git a/src/scad_scene.h b/src/scad_scene.h
@@ -41,6 +41,7 @@ struct scad_scene {
   struct scad_device* device;
   struct htable_names geometry_names;
   char name[8];
+  int is_meshed;
 
   ref_T ref;
 };