[#21237] RAW triangle file importer

ported by Aurel W (aurel)

made adjustments to have this as a package in the extensions directory since this format isnt commonly used for interchanging data but still useful at times.

release/scripts/extensions/io_mesh_raw/__init__.py

@@ -0,0 +1,51 @@
+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+# blender 1 line description
+"Raw Mesh IO (File > Import/Export > Raw Faces (.raw))"
+
+import bpy
+
+
+def menu_import(self, context):
+    from io_mesh_raw import import_raw
+    self.layout.operator(import_raw.RawImporter.bl_idname, text="Raw Faces (.raw)").path = "*.raw"
+
+
+def menu_export(self, context):
+    from io_mesh_raw import export_raw
+    default_path = bpy.data.filename.replace(".blend", ".raw")
+    self.layout.operator(export_raw.RawExporter.bl_idname, text="Raw Faces (.raw)").path = default_path
+
+
+def register():
+    from io_mesh_raw import import_raw, export_raw
+    bpy.types.register(import_raw.RawImporter)
+    bpy.types.register(export_raw.RawExporter)
+    bpy.types.INFO_MT_file_import.append(menu_import)
+    bpy.types.INFO_MT_file_export.append(menu_export)
+
+def unregister():
+    from io_mesh_raw import import_raw, export_raw
+    bpy.types.unregister(import_raw.RawImporter)
+    bpy.types.unregister(export_raw.RawExporter)
+    bpy.types.INFO_MT_file_import.remove(menu_import)
+    bpy.types.INFO_MT_file_export.remove(menu_export)
+
+if __name__ == "__main__":
+    register()

release/scripts/extensions/io_mesh_raw/export_raw.py

@@ -0,0 +1,114 @@
+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+__author__ = ["Aurel Wildfellner"]
+__version__ = '0.2'
+__bpydoc__ = """\
+This script exports a Mesh to a RAW triangle format file.
+
+The raw triangle format is very simple; it has no verts or faces lists.
+It's just a simple ascii text file with the vertices of each triangle
+listed on each line. In addition, also quads can be exported as a line
+of 12 values (this was the default before blender 2.5). Now default
+settings will triangulate the mesh.
+
+Usage:<br>
+    Execute this script from the "File->Export" menu. You can select 
+whether modifiers should be applied and if the mesh is triangulated.
+
+"""
+
+import bpy
+
+
+def faceToTriangles(face):
+    triangles = []
+    if (len(face) == 4): #quad
+        triangles.append( [ face[0], face[1], face[2] ] )
+        triangles.append( [ face[2], face[3], face[0] ] )
+    else:
+        triangles.append(face)
+
+    return triangles
+    
+
+def faceValues(face, mesh, matrix):
+    fv = []
+    for verti in face.verts_raw:
+        fv.append(matrix * mesh.verts[verti].co)
+    return fv
+
+
+def faceToLine(face):
+    line = ""
+    for v in face:
+        line += str(v[0]) + " " + str(v[1]) + " " + str(v[2]) + " "
+    return line[:-1] + "\n"
+
+
+def export_raw(path, applyMods, triangulate):
+    faces = []
+    for obj in bpy.context.selected_objects:
+        if obj.type == 'MESH':
+            matrix = obj.matrix
+
+            if (applyMods):
+                me = obj.create_mesh(True, "PREVIEW")
+            else:
+                me = obj.data
+
+            for face in me.faces:
+                fv = faceValues(face, me, matrix)
+                if triangulate:
+                    faces.extend(faceToTriangles(fv))
+                else:
+                    faces.append(fv)
+
+    # write the faces to a file
+    file = open(path, "w")
+    for face in faces:
+        file.write(faceToLine(face))
+    file.close()
+
+
+from bpy.props import *
+
+
+class RawExporter(bpy.types.Operator):
+    '''Save Raw triangle mesh data'''
+    bl_idname = "export_mesh.raw"
+    bl_label = "Export RAW"
+
+    path = StringProperty(name="File Path", description="File path used for exporting the RAW file", maxlen= 1024, default= "")
+    filename = StringProperty(name="File Name", description="Name of the file.")
+    directory = StringProperty(name="Directory", description="Directory of the file.")
+    check_existing = BoolProperty(name="Check Existing", description="Check and warn on overwriting existing files", default=True, options={'HIDDEN'})
+
+    apply_modifiers = BoolProperty(name="Apply Modifiers", description="Use transformed mesh data from each object", default=True)
+    triangulate = BoolProperty(name="Triangulate", description="Triangulate quads.", default=True)
+
+    def execute(self, context):
+        export_raw(self.properties.path, self.properties.apply_modifiers, self.properties.triangulate)
+        return {'FINISHED'}
+
+    def invoke(self, context, event):
+        wm = context.manager
+        wm.add_fileselect(self)
+        return {'RUNNING_MODAL'}
+
+# package manages registering

release/scripts/extensions/io_mesh_raw/import_raw.py

@@ -0,0 +1,142 @@
+# ##### BEGIN GPL LICENSE BLOCK #####
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License
+#  as published by the Free Software Foundation; either version 2
+#  of the License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software Foundation,
+#  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+#
+# ##### END GPL LICENSE BLOCK #####
+
+__author__ = ["Anthony D'Agostino (Scorpius)", "Aurel Wildfellner"]
+__version__ = '0.2'
+__bpydoc__ = """\
+This script imports Raw Triangle File format files to Blender.
+
+The raw triangle format is very simple; it has no verts or faces lists.
+It's just a simple ascii text file with the vertices of each triangle
+listed on each line. In addition, a line with 12 values will be 
+imported as a quad. This may be in conflict with some other 
+applications, which use a raw format, but this is how it was 
+implemented back in blender 2.42.
+
+Usage:<br>
+    Execute this script from the "File->Import" menu and choose a Raw file to
+open.
+
+Notes:<br>
+    Generates the standard verts and faces lists, but without duplicate
+verts. Only *exact* duplicates are removed, there is no way to specify a
+tolerance.
+"""
+
+
+
+import bpy
+
+# move those to a utility modul
+from import_scene_obj import unpack_face_list, unpack_list # TODO, make generic
+
+
+def readMesh(filename, objName):
+    file = open(filename, "rb")
+
+    def line_to_face(line):
+        # Each triplet is an xyz float
+        line_split = []
+        try:
+            line_split = list(map(float, line.split()))
+        except:
+            return None
+
+        if len(line_split) == 9: # Tri
+            f1, f2, f3, f4, f5, f6, f7, f8, f9 = line_split
+            return [(f1, f2, f3), (f4, f5, f6), (f7, f8, f9)]
+        elif len(line_split) == 12: # Quad
+            f1, f2, f3, f4, f5, f6, f7, f8, f9, A, B, C = line_split
+            return [(f1, f2, f3), (f4, f5, f6), (f7, f8, f9), (A, B, C)]
+        else:
+            return None
+        
+    
+    faces = []
+    for line in file.readlines():
+        face = line_to_face(line)
+        if face:
+            faces.append(face)
+
+    file.close()
+
+    # Generate verts and faces lists, without duplicates
+    verts = []
+    coords = {}
+    index = 0
+
+    for f in faces:
+        for i, v in enumerate(f):
+            try:
+                f[i] = coords[v]
+            except:
+                f[i] = coords[v] = index
+                index += 1
+                verts.append(v)
+
+    mesh = bpy.data.meshes.new(objName)
+    mesh.add_geometry(int(len(verts)), 0, int(len(faces)))
+    mesh.verts.foreach_set("co", unpack_list(verts))
+    mesh.faces.foreach_set("verts_raw", unpack_face_list(faces))
+    mesh.faces.foreach_set("smooth", [False] * len(mesh.faces))
+
+    return mesh
+
+
+def addMeshObj(mesh, objName):
+    scn = bpy.context.scene
+    
+    for o in scn.objects:
+        o.selected = False
+
+    mesh.update()
+    nobj = bpy.data.objects.new(objName, mesh)
+    scn.objects.link(nobj)
+    nobj.selected = True
+
+    if scn.objects.active == None or scn.objects.active.mode == 'OBJECT':
+        scn.objects.active = nobj
+
+
+from bpy.props import *
+
+class RawImporter(bpy.types.Operator):
+    '''Load Raw triangle mesh data'''
+    bl_idname = "import_mesh.raw"
+    bl_label = "Import RAW"
+
+    path = StringProperty(name="File Path", description="File path used for importing the RAW file", maxlen=1024, default="")
+    filename = StringProperty(name="File Name", description="Name of the file.")
+    directory = StringProperty(name="Directory", description="Directory of the file.")
+
+    def execute(self, context):
+
+        #convert the filename to an object name
+        objName = bpy.utils.display_name(self.properties.filename)
+
+        mesh = readMesh(self.properties.path, objName)
+        addMeshObj(mesh, objName)
+
+        return {'FINISHED'}
+
+    def invoke(self, context, event):
+        wm = context.manager
+        wm.add_fileselect(self)
+        return {'RUNNING_MODAL'}
+
+# package manages registering