Added in my old 3d spritesheet generator. This can generate isometric spritesheets from 3d models.

game/spritesheet_generator_3d/SSGen.tscn

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+[gd_scene load_steps=14 format=2]
+
+[ext_resource path="res://spritesheet_generator_3d/Spatial.tscn" type="PackedScene" id=1]
+[ext_resource path="res://spritesheet_generator_3d/Spatial.tscn" type="PackedScene" id=2]
+[ext_resource path="res://spritesheet_generator/SheetGen.gd" type="Script" id=3]
+[ext_resource path="res://spritesheet_generator_3d/Spatial.tscn" type="PackedScene" id=4]
+[ext_resource path="res://spritesheet_generator/SpriteMover.gd" type="Script" id=5]
+[ext_resource path="res://spritesheet_generator/Sprite3Ds.tscn" type="PackedScene" id=6]
+
+
+
+[sub_resource type="ProceduralSky" id=1]
+
+[sub_resource type="Environment" id=2]
+background_mode = 2
+background_sky = SubResource( 1 )
+background_color = Color( 0.364706, 0.364706, 0.364706, 1 )
+background_energy = 0.69
+ambient_light_color = Color( 1, 1, 1, 1 )
+ambient_light_energy = 0.68
+ambient_light_sky_contribution = 0.0
+
+[sub_resource type="Environment" id=3]
+background_mode = 1
+background_energy = 0.57
+ambient_light_color = Color( 0.113725, 0.113725, 0.113725, 1 )
+ambient_light_energy = 0.68
+ssao_enabled = true
+
+[sub_resource type="World" id=4]
+environment = SubResource( 3 )
+
+[sub_resource type="Environment" id=5]
+background_mode = 1
+background_energy = 0.26
+ambient_light_color = Color( 0.113725, 0.113725, 0.113725, 1 )
+ambient_light_energy = 0.58
+ambient_light_sky_contribution = 0.1
+tonemap_exposure = 0.36
+tonemap_white = 0.47
+
+[sub_resource type="ViewportTexture" id=6]
+viewport_path = NodePath("Viewport")
+
+[sub_resource type="SpatialMaterial" id=7]
+flags_transparent = true
+params_billboard_mode = 1
+
+[node name="Node" type="Node"]
+
+[node name="WorldEnvironment" type="WorldEnvironment" parent="."]
+environment = SubResource( 2 )
+
+[node name="player2" parent="." instance=ExtResource( 1 )]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, -34.2601 )
+visible = false
+input_ray_pickable = false
+
+[node name="player" parent="." instance=ExtResource( 1 )]
+visible = false
+input_ray_pickable = false
+
+[node name="MicamoChar" parent="." instance=ExtResource( 2 )]
+editor/display_folded = true
+
+[node name="Viewport" type="Viewport" parent="."]
+size = Vector2( 32, 32 )
+own_world = true
+world = SubResource( 4 )
+transparent_bg = true
+handle_input_locally = false
+hdr = false
+render_target_v_flip = true
+render_target_update_mode = 3
+script = ExtResource( 3 )
+_sprite_size = 32
+_sprite_num = 16
+_directions = 16
+save_texture = true
+_atlas_show_sprite_path = NodePath("../Sprite3")
+_sprite_path = NodePath("../Sprite3D")
+_animation_player_path = NodePath("MicamoChar/AnimationPlayer")
+_player_path = NodePath("MicamoChar")
+
+[node name="MicamoChar" parent="Viewport" instance=ExtResource( 4 )]
+editor/display_folded = true
+
+[node name="Skeleton" parent="Viewport/MicamoChar" index="0"]
+bones/0/bound_children = [  ]
+bones/1/bound_children = [  ]
+bones/3/bound_children = [  ]
+bones/4/bound_children = [  ]
+bones/5/bound_children = [  ]
+bones/8/bound_children = [  ]
+bones/9/bound_children = [  ]
+bones/10/bound_children = [  ]
+bones/32/bound_children = [  ]
+bones/33/bound_children = [  ]
+bones/34/bound_children = [  ]
+bones/55/bound_children = [  ]
+bones/56/bound_children = [  ]
+bones/57/bound_children = [  ]
+bones/60/bound_children = [  ]
+bones/61/bound_children = [  ]
+bones/62/bound_children = [  ]
+
+[node name="Camera" type="Camera" parent="Viewport"]
+transform = Transform( 0.707107, -0.353553, 0.612372, 0, 0.866025, 0.5, -0.707107, -0.353553, 0.612372, 2.95796, 3.39896, 2.92486 )
+environment = SubResource( 5 )
+projection = 1
+current = true
+size = 2.2
+near = 0.01
+far = 240.8
+
+[node name="OmniLight" type="OmniLight" parent="Viewport"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 3.05496, 1.55159, 3.33238 )
+layers = 3
+light_color = Color( 0.952941, 0.929412, 0.807843, 1 )
+light_energy = 0.74
+light_indirect_energy = 1.27
+light_specular = 0.15
+omni_range = 6.4
+omni_attenuation = 1.1487
+
+[node name="OmniLight2" type="OmniLight" parent="Viewport"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -1.4893, 3.88558, -2.30035 )
+light_color = Color( 0.898039, 0.898039, 0.729412, 1 )
+light_energy = 0.58
+light_indirect_energy = 2.95
+omni_range = 4.3
+
+[node name="Sprite" type="Sprite" parent="."]
+position = Vector2( 837.448, 475.588 )
+centered = false
+flip_v = true
+vframes = 16
+hframes = 16
+script = ExtResource( 5 )
+
+[node name="Camera" type="Camera" parent="."]
+transform = Transform( 0.707107, -0.353553, 0.612372, 0, 0.866026, 0.5, -0.707107, -0.353553, 0.612372, 13.5879, 9.78323, 18.7533 )
+projection = 1
+current = true
+size = 10.0
+
+[node name="Sprite2" type="Sprite" parent="."]
+position = Vector2( 179.55, 160.55 )
+texture = SubResource( 6 )
+flip_v = true
+
+[node name="Sprite3" type="Sprite" parent="."]
+position = Vector2( 603.531, 254.594 )
+flip_v = true
+
+[node name="Sprite3D" type="Sprite3D" parent="."]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 8.18889, 0, 14.9987 )
+material_override = SubResource( 7 )
+cast_shadow = 0
+flip_v = true
+pixel_size = 0.0156
+vframes = 16
+hframes = 16
+script = ExtResource( 5 )
+
+[node name="Sprite3D2" parent="." instance=ExtResource( 6 )]
+visible = false
+
+
+[editable path="Viewport/MicamoChar"]

game/spritesheet_generator_3d/SheetGen.gd

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+extends Node
+
+# Declare member variables here. Examples:
+# var a = 2
+# var b = "text"
+export (int) var _sprite_size
+export (int) var _sprite_num
+export (int) var _directions
+
+export (bool) var _show_atlas = false
+
+export (bool) var save_texture = false
+
+export (NodePath) var _atlas_show_sprite_path
+export (NodePath) var _sprite_path
+export (NodePath) var _animation_player_path
+export (NodePath) var _player_path
+export (NodePath) var _animation_tree_player_path
+
+var _viewport
+var _viewport_texture 
+var _sprite
+var _animation_player
+var _time = 0
+var _animation_tree_player
+var _frame = 0
+var _rotcount = 0
+var _rotation = 0
+var _atlas
+var _image_texture
+var _running = false
+var _atlas_sprite_show_node
+var _atlas_texture
+var _player
+
+var _texture
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	_viewport = get_node(".")
+	#_viewport.set
+	_sprite = get_node(_sprite_path)
+	_atlas_sprite_show_node = get_node(_atlas_show_sprite_path)
+	_animation_player = get_node(_animation_player_path)
+	_player = get_node(_player_path)
+	_animation_tree_player = get_node(_animation_tree_player_path)
+	_viewport_texture = _viewport.get_texture()
+	
+	_texture = Image.new()
+	var frame = _viewport.get_texture().get_data()
+	_texture.create(_sprite_size * _sprite_num, _sprite_size * _directions, false, frame.get_format())
+	
+	yield(get_tree(), "idle_frame")
+	yield(get_tree(), "idle_frame")
+	
+	_running = true
+	
+	#_generated_image = Image.new()
+	#_generated_image.
+	#_sprite.set_texture(_viewport_texture)
+	
+	
+	#_frame_data.clear()
+	
+	#_generated_image.create_from_data(64, 64, false, Image.FORMAT_RGBA4444, texture.get_data().get_data())
+	#texture = _viewport.get_texture()
+	#_sprite.set_texture(texture)
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta):
+	
+	#if not _running and Input.is_key_pressed(KEY_K):
+	#	_running = true
+	
+	if not _running:
+		return
+		
+	#_viewport.update_worlds()
+		
+	var frame = _viewport.get_texture().get_data()
+	
+	
+	#if _frame == 0 and _rotcount == 0:
+	
+	_texture.blend_rect(frame, frame.get_used_rect(), Vector2((_frame * _sprite_size), (_rotcount * _sprite_size)))
+	
+	#_time += 0.3
+	#_animation_player.seek (_time , true )
+	_frame += 1
+	
+	if _frame > _sprite_num - 1:
+		_frame = 0
+		
+		_rotcount += 1
+
+		if (_rotcount > _sprite_num - 1):
+			_running = false
+			create_atlas()
+			return
+		
+		#var m3 = Basis()
+		#m3 = m3.rotated( Vector3(0,1,0), 0.19625 )
+		_player.rotate_y((PI*2)/float(_directions))
+		
+		_animation_player.play("default")
+		#_rotation = _rotcount * 22.5
+		#_player.tra
+		
+
+		#return
+
+	#0.83
+	_animation_player.seek(_frame * (_animation_player.current_animation_length / (_sprite_num - 1)), true)
+	#_animation_tree_player.advance(0.05)
+
+
+func create_atlas():
+	_image_texture = ImageTexture.new()
+	_image_texture.create_from_image(_texture, 0)
+	
+	_image_texture.get_data().save_png("res://testsave.png")
+	
+	if save_texture:
+		_sprite.set_texture(_image_texture)
+	
+	if _show_atlas:
+		_atlas_sprite_show_node.set_texture(_image_texture)
+	
+	pass

game/spritesheet_generator_3d/Spatial.tscn

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+[gd_scene format=2]
+
+[node name="Spatial" type="Spatial"]

game/spritesheet_generator_3d/Sprite3Ds.tscn

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+[gd_scene load_steps=4 format=2]
+
+[ext_resource path="res://testsave.png" type="Texture" id=1]
+[ext_resource path="res://spritesheet_generator/SpriteMover.gd" type="Script" id=2]
+
+
+
+[sub_resource type="SpatialMaterial" id=1]
+flags_transparent = true
+params_billboard_mode = 1
+
+[node name="Sprite3D" type="Sprite3D"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 2.39352, 0 )
+material_override = SubResource( 1 )
+cast_shadow = 0
+flip_v = true
+pixel_size = 0.064
+texture = ExtResource( 1 )
+vframes = 16
+hframes = 16
+script = ExtResource( 2 )
+

game/spritesheet_generator_3d/SpriteMover.gd

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+extends Node
+
+# Declare member variables here. Examples:
+# var a = 2
+# var b = "text"
+
+var _sprite
+
+export (bool) var enabled = true
+export(int) var _animset = 0
+export(int) var _animset_size = 16
+export(int) var _animset_count = 16
+var _min_frame = 0
+var _max_frame = 16 * 16
+
+var x = 0
+var y = 0
+var timer = 0
+var _frame = 1
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	_sprite = get_node(".")
+	_sprite.set_frame(_min_frame)
+	#_sprite.set_position(Vector2(x, y))
+
+func set_movement_vector(vector):
+	var a = Vector2(vector.x, vector.z)
+	a = a.normalized()
+	
+	var base = Vector2(0, -1)
+	
+	var angle = a.angle_to(base) + PI
+	
+	var slice = (2*PI) / _animset_count 
+	
+	var num_slice = int(angle / slice)
+
+	set_animset(num_slice)
+	
+func set_animset(animest_id):
+	if (animest_id >= _animset_count):
+		_animset = _animset_count - 1
+		
+	if (animest_id < 0):
+		_animset = 0
+		
+	_animset = animest_id
+	
+	
+	#_min_frame = _animset * _animset_size
+	#_max_frame = _animset * _animset_size + _animset_size
+
+func _process(delta):
+	#set_animset(_animset)
+	
+	if not enabled:
+		set_process(false)
+		return
+	
+	timer += delta
+	
+	if (timer > 0.05):
+		timer -= 0.05
+		_frame += 1
+		
+		if _frame > _animset_size - 1:
+			_frame = 0
+			
+		_sprite.set_frame(_frame + (_animset * _animset_size))
+		
+		
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func a_process(delta):
+	#x += int(delta * 300)
+	y += int(delta * 200)
+	
+	if y > 700:
+		y = -50
+	
+	_sprite.set_position(Vector2(x, y))