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The basic OBJ exporter working. The code is release/io/export_obj.py.

Browse Source 
To run it, switch to Scripts Window, click Scripts->Reload Scripts 
menu, it appears under Scripts->Export.
This commit is contained in:
Arystanbek Dyussenov
2009-06-16 08:54:38 +00:00
parent 678417b76c
commit 556369fe2f
4 changed files with 41 additions and 23 deletions
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54
release/io/export_obj.py
View File

@@ -1,7 +1,37 @@
import bpy
def write_obj(filepath, scene, ob):
out = open(filepath, 'w')
# create a temporary mesh
mesh = bpy.data.add_mesh("tmpmesh")
# copy data with modifiers applied
mesh.copy_applied(scene, ob)
# for vert in mesh.verts:
# ^ iterating that way doesn't work atm for some reason
for i in range(len(mesh.verts)):
vert = mesh.verts[i]
out.write('v {0} {1} {2}\n'.format(vert.co[0], vert.co[1], vert.co[2]))
for i in range(len(mesh.faces)):
face = mesh.faces[i]
out.write('f')
# but this works
for index in face.verts:
out.write(' {0}'.format(index + 1))
out.write('\n')
# TODO: delete mesh here
out.close()
class SCRIPT_OT_export_obj(bpy.types.Operator):
'''Operator documentation text, will be used for the operator tooltip and python docs.'''
'''A very basic OBJ exporter, writes only active object's mesh.'''
__label__ = 'Export OBJ'
# List of operator properties, the attributes will be assigned
@@ -17,19 +47,12 @@ class SCRIPT_OT_export_obj(bpy.types.Operator):
self.debug("exec")
self.debug("filename = " + self.filename)
self.debug("num selected objects: {0}".format(len(context.selected_objects)))
act = context.active_object
ob = bpy.data.objects["Cube"]
o = ob.data
m = bpy.data.add_mesh("tmpmesh")
m.copy_applied(context.scene, ob, True)
def vert(co):
return "{0}, {1}, {2}".format(co[0], co[1], co[2])
print(" orig: {0} with totverts={1}".format(vert(o.verts[0].co), len(o.verts)))
print("applied: {0} with totverts={1}".format(vert(m.verts[0].co), len(m.verts)))
if act.type == 'MESH':
write_obj(self.filename, context.scene, act)
else:
self.debug("Active object is not a MESH.")
# XXX errors are silenced for some reason
# raise Exception("oops!")
@@ -38,9 +61,8 @@ class SCRIPT_OT_export_obj(bpy.types.Operator):
def invoke(self, context, event):
self.debug("invoke")
# context.add_fileselect(self.__operator__)
# return ('RUNNING_MODAL',)
return self.exec(context)
context.add_fileselect(self.__operator__)
return ('RUNNING_MODAL',)
def poll(self, context): # poll isnt working yet
self.debug("poll")

5
source/blender/editors/mesh/editmesh.c
View File

@@ -2041,14 +2041,11 @@ void RNA_api_mesh_copy(Mesh *me, Mesh *from)
copy_mesh_data(me, from);
}
void RNA_api_mesh_copy_applied(Mesh *me, Scene *sce, Object *ob, int apply_obmat)
void RNA_api_mesh_copy_applied(Mesh *me, Scene *sce, Object *ob)
{
DerivedMesh *dm= mesh_create_derived_view(sce, ob, CD_MASK_MESH);
DM_to_mesh(dm, me);
dm->release(dm);
if (apply_obmat) {
}
}
void RNA_api_mesh_transform(Mesh *me, float **mat)

2
source/blender/makesrna/intern/rna_internal.h
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@@ -196,7 +196,7 @@ struct Mesh;
void RNA_api_ui_layout(struct StructRNA *srna);
struct Mesh *RNA_api_add_mesh(struct Main *main, char *name);
void RNA_api_mesh_copy(struct Mesh *me, struct Mesh *from);
void RNA_api_mesh_copy_applied(struct Mesh *me, struct Scene *sce, struct Object *ob, int apply_obmat);
void RNA_api_mesh_copy_applied(struct Mesh *me, struct Scene *sce, struct Object *ob);
/* ID Properties */

3
source/blender/makesrna/intern/rna_mesh.c
View File

@@ -1134,12 +1134,11 @@ static void rna_def_mesh(BlenderRNA *brna)
RNA_def_property_flag(prop, PROP_REQUIRED);
func= RNA_def_function(srna, "copy_applied", "RNA_api_mesh_copy_applied");
RNA_def_function_ui_description(func, "Copy mesh data from object with all modifiers and transformations applied.");
RNA_def_function_ui_description(func, "Copy mesh data from object with all modifiers applied.");
prop= RNA_def_pointer(func, "sce", "Scene", "", "Scene.");
RNA_def_property_flag(prop, PROP_REQUIRED);
prop= RNA_def_pointer(func, "ob", "Object", "", "Object to copy data from.");
RNA_def_property_flag(prop, PROP_REQUIRED);
RNA_def_boolean(func, "apply_obmat", 1, "", "Apply object matrix.");
}
void RNA_def_mesh(BlenderRNA *brna)