]> git.tdb.fi Git - libs/gl.git/blobdiff - blender/io_mspgl/export_object.py
Redesign file writing in the Blender exporter
[libs/gl.git] / blender / io_mspgl / export_object.py
index 5a707bad216e0250360fa34e13589af558997030..4bc6f450b330a3ca17159ddea6fa9a2ba1ab836e 100644 (file)
@@ -20,36 +20,19 @@ def image_name(i):
        else:
                return i.name
 
-def external_name(out_file, ext, index):
-       path, base = os.path.split(out_file.filename)
-       base = os.path.splitext(base)[0]
-       if index>0:
-               base += "_lod{}".format(index)
-       return path, base+ext
-
 
 class ObjectExporter:
        def __init__(self):
+               self.show_progress = True
+               self.use_strips = True
+               self.use_degen_tris = False
                self.textures = "REF"
                self.separate_mesh = False
                self.separate_tech = False
                self.shared_resources = True
                self.export_lods = True
 
-       def export(self, context, out_file, obj=None, progress=None):
-               if obj is None:
-                       obj = context.active_object
-
-               lods = [obj]
-               for c in obj.children:
-                       if c.lod_for_parent:
-                               if c.lod_index>=len(lods):
-                                       lods += [None]*(c.lod_index+1-len(lods))
-                               lods[c.lod_index] = c
-
-               from .outfile import open_output
-               out_file = open_output(out_file)
-
+       def compute_bounding_sphere(self, obj):
                p1 = max(((v.co, v.co.length) for v in obj.data.vertices), key=lambda x:x[1])[0]
                p2 = max(((v.co, (v.co-p1).length) for v in obj.data.vertices), key=lambda x:x[1])[0]
                center = (p1+p2)/2
@@ -60,103 +43,201 @@ class ObjectExporter:
                                center += d*(1-radius/d.length)/2
                                radius = (radius+d.length)/2
 
-               out_file.write("bounding_sphere_hint", center[0], center[1], center[2], radius)
+               return center, radius
+
+       def make_external_name(self, base_name, resource_name, ext, index):
+               if self.shared_resources:
+                       return resource_name+ext
+               elif lod_index>0:
+                       return "{}_lod{}{}".format(base_name, lod_index, ext)
+               else:
+                       return base_name+ext
+
+       def create_mesh_exporter(self):
+               from .export_mesh import MeshExporter
+               mesh_export = MeshExporter()
+               mesh_export.use_strips = self.use_strips
+               mesh_export.use_degen_tris = self.use_degen_tris
+               return mesh_export
+
+       def export_to_file(self, context, out_fn):
+               obj = context.active_object
+
+               from .util import Progress
+               progress = Progress(self.show_progress and context)
+
+               path, base = os.path.split(out_fn)
+               base = os.path.splitext(base)[0]
+
+               meshes = self.export_object_meshes(context, obj, progress, base_name=base)
+               if self.separate_mesh:
+                       for name, st in meshes.items():
+                               with open(os.path.join(path, name), "w") as out_file:
+                                       for s in st:
+                                               s.write_to_file(out_file)
+
+               if self.separate_tech:
+                       lods = [obj]
+                       if self.export_lods:
+                               lods += [c for c in obj.children if c.lod_for_parent]
+
+                       for l in lods:
+                               lod_index = l.lod_index if l.lod_for_parent else 0
+
+                               material = None
+                               if obj.material_slots:
+                                       material = obj.material_slots[0].material
+
+                               if not l.technique:
+                                       tech_name = self.make_external_name(base, material.name, ".tech", lod_index)
+                                       st = self.export_object_technique(l, base_name=base)
+                                       with open(os.path.join(path, tech_name), "w") as out_file:
+                                               for s in st:
+                                                       s.write_to_file(out_file)
+                               elif material and l.override_material:
+                                       mat_name = self.make_external_name(base, material.name, ".mat", lod_index)
+                                       st = self.export_material(material)
+                                       with open(os.path.join(path, mat_name), "w") as out_file:
+                                               for s in st:
+                                                       s.write_to_file(out_file)
+
+               statements = self.export_object(context, obj, progress, meshes=meshes, base_name=base)
+
+               with open(out_fn, "w") as out_file:
+                       for s in statements:
+                               s.write_to_file(out_file)
+
+       def export_object_meshes(self, context, obj, progress, *, base_name=None):
+               if base_name is None:
+                       base_name = obj.name
+
+               lods = [obj]
+               if self.export_lods:
+                       lods += [c for c in obj.children if c.lod_for_parent]
+
+               from .mesh import create_mesh_from_object
+               mesh_export = self.create_mesh_exporter()
+               meshes = {}
+
+               for i, l in enumerate(lods):
+                       lod_index = l.lod_index if l.lod_for_parent else 0
+                       progress.push_task_slice("LOD {}".format(lod_index), i, len(lods))
+
+                       mesh_name = self.make_external_name(base_name, l.data.name, ".mesh", lod_index)
+                       if mesh_name not in meshes:
+                               mesh = create_mesh_from_object(context, l, progress)
+                               meshes[mesh_name] = mesh_export.export_mesh(context, mesh, progress)
+
+                       progress.pop_task()
+
+               return meshes
+
+       def export_object(self, context, obj, progress, *, meshes=None, base_name=None):
+               if base_name is None:
+                       base_name = obj.name
+
+               if meshes is None:
+                       meshes = self.export_object_meshes(context, obj, progress, base_name=base_name)
+
+               lods = [obj]
+               for c in obj.children:
+                       if c.lod_for_parent:
+                               if c.lod_index>=len(lods):
+                                       lods += [None]*(c.lod_index+1-len(lods))
+                               lods[c.lod_index] = c
+
+               from .datafile import Statement
+               statements = []
+
+               center, radius = self.compute_bounding_sphere(obj)
+               statements.append(Statement("bounding_sphere_hint", *center, radius))
 
                prev_mesh = None
                prev_tech = (None, None)
                for i, l in enumerate(lods):
-                       if i>0:
-                               out_file.begin("level_of_detail", i)
+                       lod_st = []
+
+                       if l.data.name!=prev_mesh:
+                               mesh_name = self.make_external_name(base_name, l.data.name, ".mesh", i)
+                               if self.separate_mesh:
+                                       lod_st.append(Statement("mesh", mesh_name))
+                               else:
+                                       st = Statement("mesh")
+                                       st.sub = meshes[mesh_name]
+                                       lod_st.append(st)
 
-                       if i==0 or l.data.name!=prev_mesh:
-                               mesh = self.export_object_mesh(context, out_file, l, progress)
                                prev_mesh = l.data.name
 
-                       same_tech = True
-                       mat = None
+                       mat_name = None
                        if l.material_slots and l.material_slots[0].material:
-                               mat = l.material_slots[0].material.name
-                               if mat!=prev_tech[1]:
-                                       same_tech = False
-                       if l.technique!=prev_tech[0]:
-                               same_tech = False
-                       if i==0 or not same_tech:
-                               self.export_object_technique(l, out_file, i)
-                               prev_tech = (l.technique, mat)
+                               mat_name = l.material_slots[0].material.name
 
-                       if i>0:
-                               out_file.end()
+                       tech = (l.technique, mat_name)
+                       if tech!=prev_tech:
+                               tech_name = self.make_external_name(base_name, mat_name or l.name, ".tech", i)
+                               if l.technique:
+                                       if l.inherit_tech:
+                                               st = Statement("technique")
+                                               st.sub = self.export_object_technique(l, base_name=base_name)
+                                               lod_st.append(st)
+                                       else:
+                                               lod_st.append(Statement("technique", l.technique))
+                               elif self.separate_tech:
+                                       lod_st.append(Statement("technique", tech_name))
+                               else:
+                                       st = Statement("technique")
+                                       st.sub = self.export_object_technique(l, base_name=base_name)
+                                       lod_st.append(st)
 
-       def export_object_mesh(self, context, out_file, obj, progress):
-               from .export_mesh import MeshExporter
-               mesh_export = MeshExporter()
-               for k, v in self.__dict__.items():
-                       setattr(mesh_export, k, v)
+                               prev_tech = tech
 
-               lod_index = 0
-               if obj.lod_for_parent:
-                       lod_index = obj.lod_index
+                       if i>0:
+                               st = Statement("level_of_detail", i)
+                               st.sub = lod_st
+                               statements.append(st)
+                       else:
+                               statements += lod_st
 
-               if self.separate_mesh:
-                       from .outfile import open_output
-                       path, name = external_name(out_file, ".mesh", lod_index)
-                       if self.shared_resources:
-                               name = obj.data.name+".mesh"
-                       mesh_out = open_output(os.path.join(path, name))
-                       mesh = mesh_export.export(context, mesh_out, obj, progress)
-                       out_file.write("mesh", '"{}"'.format(name))
-               else:
-                       out_file.begin("mesh")
-                       mesh = mesh_export.export(context, out_file, obj, progress)
-                       out_file.end()
+               progress.set_progress(1.0)
 
-               return mesh
+               return statements
+
+       def export_object_technique(self, obj, *, base_name=None):
+               if base_name is None:
+                       base_name = obj.name
 
-       def export_object_technique(self, obj, out_file, lod_index):
                material = None
                if obj.material_slots:
                        material = obj.material_slots[0].material
 
-               from .outfile import open_output
-               path, name = external_name(out_file, ".tech", lod_index)
+               from .datafile import Statement, Token
+               statements = []
 
                if obj.technique:
-                       if obj.inherit_tech and material and (obj.override_material or material.texture_slots):
-                               out_file.begin("technique")
-                               out_file.begin("inherit", '"{}"'.format(obj.technique))
+                       if not obj.inherit_tech:
+                               return []
+
+                       st = Statement("inherit", obj.technique)
+                       if material:
                                for slot in material.texture_slots:
                                        if slot and slot.texture.type=="IMAGE":
                                                name = image_name(slot.texture.image)
                                                if slot.use_map_color_diffuse:
-                                                       out_file.write("texture", '"diffuse_map"', '"{}"'.format(name))
+                                                       st.sub.append(Statement("texture", "diffuse_map", name))
                                                elif slot.use_map_normal:
-                                                       out_file.write("texture", '"normal_map"', '"{}"'.format(name))
+                                                       st.sub.append(Statement("texture", "normal_map", name))
                                if obj.override_material:
-                                       mat_name = material.name+".mat"
-                                       mat_out = open_output(os.path.join(path, mat_name))
-                                       self.export_material(material, mat_out)
-                                       out_file.write("material", '"surface"', '"{}"'.format(mat_name))
-                               out_file.end()
-                               out_file.end()
-                       else:
-                               out_file.write("technique", '"{}"'.format(obj.technique))
-               elif self.separate_tech:
-                       if self.shared_resources and material:
-                               name = material.name+".tech"
-                       tech_out = open_output(os.path.join(path, name))
-                       self.export_technique_definition(material, tech_out)
-                       out_file.write("technique", '"{}"'.format(name))
-               else:
-                       out_file.begin("technique")
-                       self.export_technique_definition(material, out_file)
-                       out_file.end()
+                                       mat_name = self.make_external_name(base_name, material.name, ".mat", obj.lod_index)
+                                       st.sub.append(Statement("material", "surface", mat_name))
+                       statements.append(st)
 
-       def export_technique_definition(self, material, out_file):
-               out_file.begin("pass", '""')
+                       return statements
+
+               pass_st = Statement("pass", "")
                if material:
-                       out_file.begin("material")
-                       self.export_material(material, out_file)
-                       out_file.end()
+                       st = Statement("material")
+                       st.sub = self.export_material(material)
+                       pass_st.sub.append(st)
 
                        if self.textures!="NONE":
                                diffuse_tex = None
@@ -166,34 +247,39 @@ class ObjectExporter:
                                                break
 
                                if diffuse_tex:
-                                       out_file.begin("texunit", 0)
+                                       st = Statement("texunit", 0)
                                        if self.textures=="INLINE":
-                                               out_file.begin("texture2d")
-                                               out_file.write("min_filter", "LINEAR")
-                                               out_file.write("storage", "RGBA", diffuse_tex.image.size[0], diffuse_tex.image.size[1])
-                                               texdata = '"'
-                                               for p in diffuse_tex.image.pixels:
+                                               ss = Statement("texture2d")
+                                               ss.sub.append(Statement("min_filter", Token("LINEAR")))
+                                               ss.sub.append(Statement("storage", Token("RGBA"), tex.image.size[0], tex.image.size[1]))
+                                               texdata = ""
+                                               for p in tex.image.pixels:
                                                        texdata += "\\x%02X"%int(p*255)
-                                               texdata += '"'
-                                               out_file.write("raw_data", texdata)
-                                               out_file.end()
-                                       else:
-                                               out_file.write("texture", '"%s"'%image_name(diffuse_tex.image))
-                                       out_file.end()
+                                               ss.sub.append(Statement("raw_data", texdata))
+                                               st.sub.append(ss)
+                                       elif tex.image:
+                                               st.sub.append(Statement("texture", image_name(tex.image)))
+                                       pass_st.sub.append(st)
+               statements.append(pass_st)
 
-               out_file.end()
+               return statements
 
-       def export_material(self, mat, out_file):
-               cm = get_colormap(mat.srgb_colors)
-               if any((s and s.use_map_color_diffuse) for s in mat.texture_slots):
-                       out_file.write("diffuse", 1.0, 1.0, 1.0, 1.0)
-                       amb = cm(mat.ambient)
-                       out_file.write("ambient", amb, amb, amb, 1.0)
+       def export_material(self, material):
+               from .datafile import Statement
+               statements = []
+
+               cm = get_colormap(material.srgb_colors)
+               if any(s.use_map_color_diffuse for s in material.texture_slots if s):
+                       statements.append(Statement("diffuse", 1.0, 1.0, 1.0, 1.0))
+                       amb = cm(material.ambient)
+                       statements.append(Statement("ambient", amb, amb, amb, 1.0))
                else:
-                       diff = mat.diffuse_color*mat.diffuse_intensity
-                       out_file.write("diffuse", cm(diff.r), cm(diff.g), cm(diff.b), 1.0)
-                       amb = diff*mat.ambient
-                       out_file.write("ambient", cm(amb.r), cm(amb.g), cm(amb.b), 1.0)
-               spec = mat.specular_color*mat.specular_intensity
-               out_file.write("specular", spec.r, spec.g, spec.b, 1.0)
-               out_file.write("shininess", mat.specular_hardness)
+                       diff = material.diffuse_color*material.diffuse_intensity
+                       statements.append(Statement("diffuse", cm(diff.r), cm(diff.g), cm(diff.b), 1.0))
+                       amb = diff*material.ambient
+                       statements.append(Statement("ambient", cm(amb.r), cm(amb.g), cm(amb.b), 1.0))
+               spec = material.specular_color*material.specular_intensity
+               statements.append(Statement("specular", cm(spec.r), cm(spec.g), cm(spec.g), 1.0))
+               statements.append(Statement("shininess", material.specular_hardness))
+
+               return statements