X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=blender%2Fio_mspgl%2Fmesh.py;h=d9ae6b760ff545c8043269bb9e120b597f8b05f7;hb=e1d0738;hp=78cae28b22f662d3e0eb2ca9fdbb8073536f7893;hpb=171f8e9be4fd17ebc7a467d9a8f959a1bba6b3e6;p=libs%2Fgl.git

diff --git a/blender/io_mspgl/mesh.py b/blender/io_mspgl/mesh.py
index 78cae28b..d9ae6b76 100644
--- a/blender/io_mspgl/mesh.py
+++ b/blender/io_mspgl/mesh.py
@@ -1,6 +1,7 @@
 import bpy
 import math
 import mathutils
+import itertools
 
 def make_edge_key(i1, i2):
 	return (min(i1, i2), max(i1, i2))
@@ -8,10 +9,8 @@ def make_edge_key(i1, i2):
 class Edge:
 	def __init__(self, edge):
 		if edge.__class__==Edge:
-			self._edge = edge._edge
 			self.smooth = edge.smooth
 		else:
-			self._edge = edge
 			self.smooth = False
 		if edge:
 			self.vertices = edge.vertices[:]
@@ -21,9 +20,6 @@ class Edge:
 			self.key = None
 		self.faces = []
 
-	def __getattr__(self, attr):
-		return getattr(self._edge, attr)
-
 	def check_smooth(self, limit):
 		if len(self.faces)!=2:
 			return
@@ -50,26 +46,22 @@ class Edge:
 class Vertex:
 	def __init__(self, vertex):
 		if vertex.__class__==Vertex:
-			self._vertex = vertex._vertex
 			self.uvs = vertex.uvs[:]
 			self.tan = vertex.tan
 			self.bino = vertex.bino
 		else:
-			self._vertex = vertex
 			self.uvs = []
 			self.tan = None
 			self.bino = None
 		self.index = vertex.index
-		self.co = vertex.co
-		self.normal = vertex.normal
+		self.co = mathutils.Vector(vertex.co)
+		self.normal = mathutils.Vector(vertex.normal)
+		self.color = None
 		self.flag = False
 		self.edges = []
 		self.faces = []
 		self.groups = vertex.groups[:]
 
-	def __getattr__(self, attr):
-		return getattr(self._vertex, attr)
-
 	def __cmp__(self, other):
 		if other is None:
 			return 1
@@ -78,26 +70,26 @@ class Vertex:
 
 class VertexGroup:
 	def __init__(self, group):
-		self._group = group
-		self.group = group.group
-		self.weight = group.weight
-
-	def __getattr__(self, attr):
-		return getattr(self._group, attr)
+		if group:
+			self.group = group.group
+			self.weight = group.weight
+		else:
+			self.group = 0
+			self.weight = 0.0
 
 
 class Face:
 	def __init__(self, face):
-		self._face = face
 		self.index = face.index
 		self.edges = []
+		self.edge_keys = face.edge_keys
 		self.vertices = face.vertices[:]
-		self.uvs = []
+		self.loop_indices = face.loop_indices
+		self.normal = face.normal
+		self.use_smooth = face.use_smooth
+		self.material_index = face.material_index
 		self.flag = False
 
-	def __getattr__(self, attr):
-		return getattr(self._face, attr)
-
 	def __cmp__(self, other):
 		if other is None:
 			return 1
@@ -107,12 +99,8 @@ class Face:
 		n = self.vertices.index(v)
 		return [(n+i)%len(self.vertices) for i in range(len(self.vertices))]
 
-	def pivot_vertices(self, *vt):
-		flags = [(v in vt) for v in self.vertices]
-		l = len(self.vertices)
-		for i in range(l):
-			if flags[i] and not flags[(i+l-1)%l]:
-				return self.vertices[i:]+self.vertices[:i]
+	def get_loop_index(self, v):
+		return self.loop_indices[self.vertices.index(v)]
 
 	def get_edge(self, v1, v2):
 		key = make_edge_key(v1.index, v2.index)
@@ -141,13 +129,11 @@ class Line:
 class UvLayer:
 	def __init__(self, arg):
 		if type(arg)==str:
-			self._layer = None
 			self.name = arg
 			self.uvs = []
 		else:
-			self._layer = arg
 			self.name = arg.name
-			self.uvs = [d.uv for d in self.data]
+			self.uvs = [mathutils.Vector(d.uv) for d in arg.data]
 
 		self.unit = None
 		self.hidden = False
@@ -160,44 +146,63 @@ class UvLayer:
 			elif ext==".hidden":
 				self.hidden = True
 
-	def __getattr__(self, attr):
-		return getattr(self._layer, attr)
+
+class ColorLayer:
+	def __init__(self, l):
+		self.name = l.name
+		self.colors = [c.color[:] for c in l.data]
 
 
 class Mesh:
 	def __init__(self, mesh):
-		self._mesh = mesh
+		self.name = mesh.name
 
 		self.winding_test = mesh.winding_test
+		self.smoothing = mesh.smoothing
+		self.use_uv = mesh.use_uv
 		self.tbn_vecs = mesh.tbn_vecs
+		self.tbn_uvtex = mesh.tbn_uvtex
 		self.vertex_groups = mesh.vertex_groups
 
 		# Clone basic data
 		self.vertices = [Vertex(v) for v in mesh.vertices]
-		for v in self.vertices:
-			v.groups = [VertexGroup(g) for g in v.groups]
+		if self.vertex_groups:
+			for v in self.vertices:
+				v.groups = [VertexGroup(g) for g in v.groups]
 
 		self.faces = [Face(f) for f in mesh.polygons]
 		self.edges = [Edge(e) for e in mesh.edges]
 		self.loops = mesh.loops[:]
 		self.materials = mesh.materials[:]
 
+		self.use_auto_smooth = mesh.use_auto_smooth
+		self.auto_smooth_angle = mesh.auto_smooth_angle
+		self.max_groups_per_vertex = mesh.max_groups_per_vertex
+
 		# Clone only the desired UV layers
-		if self.use_uv=='NONE' or not mesh.uv_layers:
+		if mesh.use_uv=='NONE' or not mesh.uv_layers:
 			self.uv_layers = []
 		else:
 			self.uv_layers = [UvLayer(u) for u in mesh.uv_layers]
-			self.uv_layers = sorted([u for u in self.uv_layers if not u.hidden], key=(lambda u: (u.unit or 1000, u.name)))
 
-			if self.use_uv=='UNIT0':
+			# Assign texture unit numbers to UV layers that lack one
+			missing_unit = [u for u in self.uv_layers if u.unit is None]
+			if missing_unit:
+				missing_unit = sorted(missing_unit, key=(lambda u: u.name))
+				used_units = [u.unit for u in self.uv_layers if u.unit is not None]
+				for u, n in zip(missing_unit, (i for i in itertools.count() if i not in used_units)):
+					u.unit = n
+
+			self.uv_layers = sorted(self.uv_layers, key=(lambda u: u.unit))
+
+			if mesh.use_uv=='UNIT0':
 				self.uv_layers = [self.uv_layers[0]]
+				if self.uv_layers[0].unit!=0:
+					self.uv_layers = []
 
-			# Assign texture unit numbers to UV layers that lack one
-			next_unit = max((u.unit+1 for u in self.uv_layers if u.unit is not None), default=0)
-			for u in self.uv_layers:
-				if not u.unit:
-					u.unit = next_unit
-					next_unit += 1
+		self.colors = None
+		if mesh.vertex_colors:
+			self.colors = ColorLayer(mesh.vertex_colors[0])
 
 		# Rewrite links between elements to point to cloned data, or create links
 		# where they don't exist
@@ -221,19 +226,16 @@ class Mesh:
 				v.edges.append(e)
 
 		# Store loose edges as lines
-		if self.use_lines:
+		if mesh.use_lines:
 			self.lines = [Line(e) for e in self.edges if not e.faces]
 		else:
 			self.lines = []
 
 		self.vertex_sequence = []
 
-	def __getattr__(self, attr):
-		return getattr(self._mesh, attr)
-
 	def transform(self, matrix):
 		for v in self.vertices:
-			v.co = matrix*v.co
+			v.co = matrix@v.co
 
 	def splice(self, other):
 		if len(self.uv_layers)!=len(other.uv_layers):
@@ -257,6 +259,15 @@ class Mesh:
 		for i, u in enumerate(self.uv_layers):
 			u.uvs += other.uv_layers[i].uvs
 
+		if self.colors:
+			if other.colors:
+				self.colors.colors += other.colors.colors
+			else:
+				self.colors.colors += [(1.0, 1.0, 1.0, 1.0)]*len(other.loops)
+		elif other.colors:
+			self.colors = ColorLayer(other.colors.name)
+			self.colors.colors = [(1.0, 1.0, 1.0, 1.0)]*len(self.loops)+other.colors.colors
+
 		offset = len(self.vertices)
 		self.vertices += other.vertices
 		for v in self.vertices[offset:]:
@@ -269,8 +280,7 @@ class Mesh:
 		self.faces += other.faces
 		for f in self.faces[offset:]:
 			f.index += offset
-			f.loop_start += loop_offset
-			f.loop_indices = range(f.loop_start, f.loop_start+f.loop_total)
+			f.loop_indices = range(f.loop_indices.start+offset, f.loop_indices.stop+offset)
 			if other.materials:
 				f.material_index = material_map[f.material_index]
 
@@ -367,6 +377,9 @@ class Mesh:
 		progress.pop_task()
 
 	def prepare_vertex_groups(self, obj):
+		if not self.vertex_groups:
+			return
+
 		for v in self.vertices:
 			if v.groups:
 				weight_sum = sum(g.weight for g in v.groups)
@@ -374,6 +387,8 @@ class Mesh:
 				weight_scale = weight_sum/sum(g.weight for g in v.groups)
 				for g in v.groups:
 					g.weight *= weight_scale
+			while len(v.groups)<self.max_groups_per_vertex:
+				v.groups.append(VertexGroup(None))
 
 		if obj.parent and obj.parent.type=="ARMATURE":
 			armature = obj.parent.data
@@ -387,10 +402,34 @@ class Mesh:
 				for g in v.groups:
 					g.group = group_index_map[g.group]
 
+	def apply_material_map(self, material_map):
+		for m in self.materials:
+			if m.name not in material_map.material_names:
+				raise Exception("Material map is not compatible with Mesh")
+
+		if self.use_uv=='NONE':
+			return
+
+		layer = UvLayer("material_map")
+		if self.use_uv=='UNIT0':
+			self.uv_layers = [layer]
+			layer.unit = 0
+		else:
+			self.uv_layers.append(layer)
+			used_units = [u.unit for u in self.uv_layers]
+			layer.unit = next(i for i in itertools.count() if i not in used_units)
+			self.uv_layers.sort(key=lambda u: u.unit)
+
+		layer.uvs = [(0.0, 0.0)]*len(self.loops)
+		for f in self.faces:
+			uv = material_map.get_material_uv(self.materials[f.material_index])
+			for i in f.loop_indices:
+				layer.uvs[i] = uv
+
 	def prepare_uv(self, progress):
 		# Form a list of UV layers referenced by materials with the array atlas
 		# property set
-		array_uv_layers = [t.uv_layer for m in self.materials if m.array_atlas for t in m.texture_slots if t and t.texture_coords=='UV']
+		array_uv_layers = [] #[t.uv_layer for m in self.materials if m.array_atlas for t in m.texture_slots if t and t.texture_coords=='UV']
 		array_uv_layers = [u for u in self.uv_layers if u.name in array_uv_layers]
 
 		if array_uv_layers:
@@ -405,11 +444,6 @@ class Mesh:
 					for i in f.loop_indices:
 						l.uvs[i] = mathutils.Vector((*l.uvs[i], layer))
 
-		# Copy UVs from layers to faces
-		for f in self.faces:
-			for u in self.uv_layers:
-				f.uvs.append([u.uvs[i] for i in f.loop_indices])
-
 		prog_count = len(self.uv_layers)
 		prog_step = 0
 
@@ -427,6 +461,8 @@ class Mesh:
 				self.compute_tbn(tbn_layer_index, progress)
 				progress.pop_task()
 				prog_step = 2
+			else:
+				raise Exception("TBN UV layer not found")
 
 		# Split by the remaining UV layers
 		for i, u in enumerate(self.uv_layers):
@@ -438,16 +474,29 @@ class Mesh:
 			progress.pop_task()
 			prog_step += 1
 
-		# Copy UVs from faces to vertices
+		# Copy UVs from layers to vertices
 		for v in self.vertices:
 			if v.faces:
 				# All faces still connected to the vertex have the same UV value
 				f = v.faces[0]
-				i = f.vertices.index(v)
-				v.uvs = [u[i] for u in f.uvs]
+				i = f.get_loop_index(v)
+				v.uvs = [u.uvs[i] for u in self.uv_layers]
 			else:
 				v.uvs = [(0.0, 0.0)]*len(self.uv_layers)
 
+	def prepare_colors(self, progress):
+		if not self.colors:
+			return
+
+		self.split_vertices(self.find_color_group, progress)
+
+		for v in self.vertices:
+			if v.faces:
+				f = v.faces[0]
+				v.color = self.colors.colors[f.get_loop_index(v)]
+			else:
+				v.color = (1.0, 1.0, 1.0, 1.0)
+
 	def split_vertices(self, find_group_func, progress, *args):
 		vertex_count = len(self.vertices)
 		for i in range(vertex_count):
@@ -522,12 +571,25 @@ class Mesh:
 		return group
 
 	def find_uv_group(self, vertex, face, index):
-		uv = face.uvs[index][face.vertices.index(vertex)]
+		layer = self.uv_layers[index]
+		uv = layer.uvs[face.get_loop_index(vertex)]
 		face.flag = True
 
 		group = [face]
 		for f in vertex.faces:
-			if not f.flag and f.uvs[index][f.vertices.index(vertex)]==uv:
+			if not f.flag and layer.uvs[f.get_loop_index(vertex)]==uv:
+				f.flag = True
+				group.append(f)
+
+		return group
+
+	def find_color_group(self, vertex, face):
+		color = self.colors.colors[face.get_loop_index(vertex)]
+		face.flag = True
+
+		group = [face]
+		for f in vertex.faces:
+			if not f.flag and self.colors.colors[f.get_loop_index(vertex)]==color:
 				f.flag = True
 				group.append(f)
 
@@ -537,9 +599,9 @@ class Mesh:
 		for i, v in enumerate(self.vertices):
 			v.normal = mathutils.Vector()
 			for f in v.faces:
-				fv = f.pivot_vertices(v)
-				edge1 = fv[1].co-fv[0].co
-				edge2 = fv[-1].co-fv[0].co
+				vi = f.pivot_vertex(v)
+				edge1 = f.vertices[vi[1]].co-v.co
+				edge2 = f.vertices[vi[-1]].co-v.co
 				if edge1.length and edge2.length:
 					# Use the angle between edges as a weighting factor.  This gives
 					# more consistent normals on bends with an inequal number of
@@ -720,21 +782,8 @@ class Mesh:
 		for e in self.edges:
 			e.key = make_edge_key(e.vertices[0].index, e.vertices[1].index)
 
-	def drop_references(self):
-		for v in self.vertices:
-			v._vertex = None
-			for g in v.groups:
-				g._group = None
-		for e in self.edges:
-			e._edge = None
-		for f in self.faces:
-			f._face = None
-		for u in self.uv_layers:
-			u._layer = None
-		self._mesh = None
 
-
-def create_mesh_from_object(context, obj, progress):
+def create_mesh_from_object(context, obj, progress, *, material_map=None):
 	if obj.type!="MESH":
 		raise Exception("Object is not a mesh")
 
@@ -749,11 +798,12 @@ def create_mesh_from_object(context, obj, progress):
 			if c.type=="MESH" and c.compound:
 				objs.append((c, m*c.matrix_local))
 
+	dg = context.evaluated_depsgraph_get()
+
 	mesh = None
-	bmeshes = []
 	for o, m in objs:
-		bmesh = o.to_mesh(context.scene, True, "PREVIEW")
-		bmeshes.append(bmesh)
+		eval_obj = o.evaluated_get(dg)
+		bmesh = eval_obj.to_mesh()
 
 		# Object.to_mesh does not copy custom properties
 		bmesh.winding_test = o.data.winding_test
@@ -768,28 +818,33 @@ def create_mesh_from_object(context, obj, progress):
 		me = Mesh(bmesh)
 		me.transform(m)
 
+		for i, s in enumerate(eval_obj.material_slots):
+			if s.link=='OBJECT':
+				me.materials[i] = s.material
+
 		if mesh:
 			mesh.splice(me)
 		else:
 			mesh = me
 
+	mesh.name = obj.data.name
+
+	if material_map:
+		mesh.apply_material_map(material_map)
+
 	progress.set_task("Triangulating", 0.2, 0.3)
 	mesh.prepare_triangles(progress)
 	progress.set_task("Smoothing", 0.3, 0.5)
 	mesh.prepare_smoothing(progress)
 	progress.set_task("Vertex groups", 0.5, 0.6)
 	mesh.prepare_vertex_groups(obj)
-	progress.set_task("Preparing UVs", 0.6, 0.8)
+	progress.set_task("Preparing UVs", 0.6, 0.75)
 	mesh.prepare_uv(progress)
-	progress.set_task("Render sequence", 0.8, 1.0)
+	progress.set_task("Preparing vertex colors", 0.75, 0.85)
+	mesh.prepare_colors(progress)
+	progress.set_task("Render sequence", 0.85, 1.0)
 	mesh.prepare_sequence(progress)
 
-	# Discard the temporary Blender meshes after making sure there's no
-	# references to the data
-	mesh.drop_references()
-	for m in bmeshes:
-		bpy.data.meshes.remove(m)
-
 	progress.pop_task()
 
 	return mesh