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initial vertex weights implementation

This commit is contained in:
SleepKiller 2020-10-16 13:40:27 +13:00
parent b56fa79a19
commit dac3ade7a4
3 changed files with 94 additions and 9 deletions
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13
addons/io_scene_swbf_msh/msh_model.py
View File

@ -27,17 +27,24 @@ class ModelTransform:
translation: Vector = field(default_factory=Vector)
rotation: Quaternion = field(default_factory=Quaternion)
@dataclass
class VertexWeight:
""" Class representing a vertex weight in a .msh file. """
weight: float = 1.0
bone: int = 0
@dataclass
class GeometrySegment:
""" Class representing a 'SEGM' section in a .msh file. """
material_name: str = ""
material_name: str = field(default_factory=str)
positions: List[Vector] = field(default_factory=list)
normals: List[Vector] = field(default_factory=list)
colors: List[List[float]] = None
texcoords: List[Vector] = field(default_factory=list)
# TODO: Skin support.
weights: List[List[VertexWeight]] = None
polygons: List[List[int]] = field(default_factory=list)
triangles: List[List[int]] = field(default_factory=list)
@ -63,5 +70,7 @@ class Model:
transform: ModelTransform = field(default_factory=ModelTransform)
bone_map: List[str] = None
geometry: List[GeometrySegment] = None
collisionprimitive: CollisionPrimitive = None

57
addons/io_scene_swbf_msh/msh_model_gather.py
View File

@ -34,6 +34,9 @@ def gather_models(apply_modifiers: bool, export_target: str) -> List[Model]:
check_for_bad_lod_suffix(obj)
if obj.type == "ARMATURE":
models_list += expand_armature(obj)
local_translation, local_rotation, _ = obj.matrix_local.decompose()
model = Model()
@ -48,7 +51,7 @@ def gather_models(apply_modifiers: bool, export_target: str) -> List[Model]:
if obj.type in MESH_OBJECT_TYPES:
mesh = obj.to_mesh()
model.geometry = create_mesh_geometry(mesh)
model.geometry = create_mesh_geometry(mesh, obj.vertex_groups)
obj.to_mesh_clear()
_, _, world_scale = obj.matrix_world.decompose()
@ -64,6 +67,9 @@ def gather_models(apply_modifiers: bool, export_target: str) -> List[Model]:
if get_is_collision_primitive(obj):
model.collisionprimitive = get_collision_primitive(obj)
if obj.vertex_groups:
model.bone_map = [group.name for group in obj.vertex_groups]
models_list.append(model)
return models_list
@ -80,7 +86,7 @@ def create_parents_set() -> Set[str]:
return parents
def create_mesh_geometry(mesh: bpy.types.Mesh) -> List[GeometrySegment]:
def create_mesh_geometry(mesh: bpy.types.Mesh, has_weights: bool) -> List[GeometrySegment]:
""" Creates a list of GeometrySegment objects from a Blender mesh.
Does NOT create triangle strips in the GeometrySegment however. """
@ -93,7 +99,7 @@ def create_mesh_geometry(mesh: bpy.types.Mesh) -> List[GeometrySegment]:
material_count = max(len(mesh.materials), 1)
segments: List[GeometrySegment] = [GeometrySegment() for i in range(material_count)]
vertex_cache: List[Dict[Tuple[float], int]] = [dict() for i in range(material_count)]
vertex_cache = [dict() for i in range(material_count)]
vertex_remap: List[Dict[Tuple[int, int], int]] = [dict() for i in range(material_count)]
polygons: List[Set[int]] = [set() for i in range(material_count)]
@ -101,6 +107,10 @@ def create_mesh_geometry(mesh: bpy.types.Mesh) -> List[GeometrySegment]:
for segment in segments:
segment.colors = []
if has_weights:
for segment in segments:
segment.weights = []
for segment, material in zip(segments, mesh.materials):
segment.material_name = material.name
@ -139,6 +149,11 @@ def create_mesh_geometry(mesh: bpy.types.Mesh) -> List[GeometrySegment]:
for v in mesh.vertex_colors.active.data[loop_index].color:
yield v
if segment.weights is not None:
for v in mesh.vertices[vertex_index].groups:
yield v.group
yield v.weight
vertex_cache_entry = tuple(get_cache_vertex())
cached_vertex_index = cache.get(vertex_cache_entry, vertex_cache_miss_index)
@ -162,6 +177,11 @@ def create_mesh_geometry(mesh: bpy.types.Mesh) -> List[GeometrySegment]:
if segment.colors is not None:
segment.colors.append(list(mesh.vertex_colors.active.data[loop_index].color))
if segment.weights is not None:
groups = mesh.vertices[vertex_index].groups
segment.weights.append([VertexWeight(v.weight, v.group) for v in groups])
return new_index
for tri in mesh.loop_triangles:
@ -181,10 +201,12 @@ def create_mesh_geometry(mesh: bpy.types.Mesh) -> List[GeometrySegment]:
def get_model_type(obj: bpy.types.Object) -> ModelType:
""" Get the ModelType for a Blender object. """
# TODO: Skinning support, etc
if obj.type in MESH_OBJECT_TYPES:
return ModelType.STATIC
if obj.vertex_groups:
return ModelType.SKIN
else:
return ModelType.STATIC
return ModelType.NULL
@ -320,6 +342,31 @@ def select_objects(export_target: str) -> List[bpy.types.Object]:
return objects + parents
def expand_armature(obj: bpy.types.Object) -> List[Model]:
bones: List[Model] = []
for bone in obj.data.bones:
model = Model()
transform = bone.matrix_local
if bone.parent:
transform = bone.parent.matrix_local.inverted() @ transform
model.parent = bone.parent.name
else:
model.parent = obj.name
local_translation, local_rotation, _ = transform.decompose()
model.model_type = ModelType.BONE
model.name = bone.name
model.transform.rotation = convert_rotation_space(local_rotation)
model.transform.translation = convert_vector_space(local_translation)
bones.append(model)
return bones
def convert_vector_space(vec: Vector) -> Vector:
return Vector((-vec.x, vec.z, vec.y))

33
addons/io_scene_swbf_msh/msh_scene_save.py
View File

@ -17,6 +17,7 @@ def save_scene(output_file, scene: Scene):
with msh2.create_child("SINF") as sinf:
_write_sinf(sinf, scene)
model_index: Dict[str, int] = {model.name:i for i, model in enumerate(scene.models)}
material_index: Dict[str, int] = {}
with msh2.create_child("MATL") as matl:
@ -24,7 +25,7 @@ def save_scene(output_file, scene: Scene):
for index, model in enumerate(scene.models):
with msh2.create_child("MODL") as modl:
_write_modl(modl, model, index, material_index)
_write_modl(modl, model, index, material_index, model_index)
with hedr.create_child("CL1L"):
pass
@ -97,7 +98,7 @@ def _write_matd(matd: Writer, material_name: str, material: Material):
with matd.create_child("TX3D") as tx3d:
tx3d.write_string(material.texture3)
def _write_modl(modl: Writer, model: Model, index: int, material_index: Dict[str, int]):
def _write_modl(modl: Writer, model: Model, index: int, material_index: Dict[str, int], model_index: Dict[str, int]):
with modl.create_child("MTYP") as mtyp:
mtyp.write_u32(model.model_type.value)
@ -124,6 +125,10 @@ def _write_modl(modl: Writer, model: Model, index: int, material_index: Dict[str
with geom.create_child("SEGM") as segm:
_write_segm(segm, segment, material_index)
if model.bone_map:
with geom.create_child("ENVL") as envl:
_write_envl(envl, model, model_index)
if model.collisionprimitive is not None:
with modl.create_child("SWCI") as swci:
swci.write_u32(model.collisionprimitive.shape.value)
@ -147,6 +152,10 @@ def _write_segm(segm: Writer, segment: GeometrySegment, material_index: Dict[str
for position in segment.positions:
posl.write_f32(position.x, position.y, position.z)
if segment.weights:
with segm.create_child("WGHT") as wght:
_write_wght(wght, segment.weights)
with segm.create_child("NRML") as nrml:
nrml.write_u32(len(segment.normals))
@ -189,3 +198,23 @@ def _write_segm(segm: Writer, segment: GeometrySegment, material_index: Dict[str
for index in islice(strip, 2, len(strip)):
strp.write_u16(index)
def _write_wght(wght: Writer, weights: List[List[VertexWeight]]):
wght.write_u32(len(weights))
for weight_list in weights:
weight_list += [VertexWeight(0.0, 0)] * 4
weight_list = sorted(weight_list, key=lambda w: w.weight, reverse=True)
weight_list = weight_list[:4]
total_weight = max(sum(map(lambda w: w.weight, weight_list)), 1e-5)
for weight in weight_list:
wght.write_i32(weight.bone)
wght.write_f32(weight.weight / total_weight)
def _write_envl(envl: Writer, model: Model, model_index: Dict[str, int]):
envl.write_u32(len(model.bone_map))
for bone_name in model.bone_map:
envl.write_u32(model_index[bone_name])