initial commit

axis/Axis.tscn

@@ -0,0 +1,31 @@
+[gd_scene format=3 uid="uid://6e8umqqix2x7"]
+
+[ext_resource type="Script" uid="uid://b33y7nr7qmp16" path="res://axis/AxisNode.gd" id="1_7q3wq"]
+
+[sub_resource type="CylinderMesh" id="CylinderMesh_mchpo"]
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_mchpo"]
+albedo_color = Color(1, 0, 0, 1)
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_qksar"]
+albedo_color = Color(0, 1, 0, 1)
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_ug0go"]
+albedo_color = Color(0, 0, 1, 1)
+
+[node name="Axis" type="Node3D" unique_id=2131743502]
+script = ExtResource("1_7q3wq")
+metadata/_custom_type_script = "uid://b33y7nr7qmp16"
+
+[node name="x_axis" type="MeshInstance3D" parent="." unique_id=1811969245]
+transform = Transform3D(-4.371139e-08, -0.5, 0, 1, -2.1855694e-08, 0, 0, 0, 1, 0.5, 0, 0)
+mesh = SubResource("CylinderMesh_mchpo")
+surface_material_override/0 = SubResource("StandardMaterial3D_mchpo")
+
+[node name="y_axis" type="MeshInstance3D" parent="." unique_id=1497480348]
+mesh = SubResource("CylinderMesh_mchpo")
+surface_material_override/0 = SubResource("StandardMaterial3D_qksar")
+
+[node name="z_axis" type="MeshInstance3D" parent="." unique_id=905154710]
+mesh = SubResource("CylinderMesh_mchpo")
+surface_material_override/0 = SubResource("StandardMaterial3D_ug0go")

axis/AxisNode.gd

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+extends Node3D
+class_name AxisNode
+
+
+var axis_length: float = 1.
+
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	_setup_axis()
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	pass
+
+func _setup_axis():
+	var x_basis = Vector3(1, 0, 0)
+	var y_basis = Vector3(0, 1, 0)
+	var z_basis = Vector3(0, 0, 1)
+	var x_node: MeshInstance3D = get_node("x_axis")
+	x_node.scale = Vector3(0.1, axis_length/2, 0.1)
+	x_node.quaternion = _get_quaternion_rotation(Vector3(0,1,0), x_basis)
+	x_node.position = Vector3(axis_length/2, 0, 0)
+	var y_node = get_node("y_axis")
+	y_node.scale = Vector3(0.1, axis_length/2, 0.1)
+	y_node.quaternion = _get_quaternion_rotation(Vector3(0,1,0), y_basis)
+	y_node.position = Vector3(0, axis_length/2, 0)
+	var z_node = get_node("z_axis")
+	z_node.scale = Vector3(0.1, axis_length/2, 0.1)
+	z_node.quaternion = _get_quaternion_rotation(Vector3(0,1,0), z_basis)
+	z_node.position = Vector3(0, 0, axis_length/2)
+
+func _get_quaternion_rotation(start_vector: Vector3, end_vector: Vector3):
+	var rot_axis: Vector3 = end_vector.cross(start_vector).normalized()
+	if rot_axis.length_squared() == 0.:
+		return Quaternion.IDENTITY
+	var rot_angle: float = end_vector.angle_to(start_vector)
+	var quat = Quaternion(rot_axis, rot_angle).normalized()
+	return quat

axis/AxisNode.gd.uid

@@ -0,0 +1 @@
+uid://b33y7nr7qmp16