math nodes and on frame changed update

@@ -50,7 +50,6 @@ def execute_tree(
     # The running of this tree will trigger another depsgraph update, which
     # should not trigger yet another execution.
     global _skip_next_autorun
-

@@ -3,2 +3,3 @@
-is_first_load = "nodes" not in locals()
+import bpy
 from . import nodes
+is_first_load = "nodes" not in locals()

@@ -101,0 +101,4 @@
+def _on_frame_changed_post(
+    scene: bpy.types.Scene, depsgraph: bpy.types.Depsgraph
+) -> None:
+    global _skip_next_autorun

@@ -579,0 +627,4 @@
+
+
+class Distance(AbstractPowerShipNode):
+    """ Calculate normal from three points. """

@@ -1,3 +1,6 @@
+/.venv
+/.vscode
 __pycache__
+*.DS_Store

@@ -75,0 +81,4 @@
+) -> None:
+    global _skip_next_autorun
+    if not _skip_next_autorun:
+        _skip_next_autorun = True

@@ -6,2 +6,2 @@
-from math import degrees, radians
-from typing import TypeVar, Callable, Optional, Iterable
+from math import degrees, radians, sqrt
+from typing import TypeVar, Callable, Optional, Iterable, Any

@@ -272,3 +272,3 @@
     def _first_input_to_output(self) -> None:
         """Copy the first input's default value to the output, if the sockets are compatible."""
-
+        

@@ -579,0 +582,4 @@
+    bl_icon = "EMPTY_ARROWS"
+
+    def init(self, context):
+        self.add_optional_input_socket("NodeSocketFloat", "X")

@@ -579,0 +598,4 @@
+        if y is not None:
+            v.y = y
+        if z is not None:
+            v.z = z

@@ -579,0 +609,4 @@
+    bl_icon = "EMPTY_ARROWS"
+
+    def init(self, context):
+        self.add_optional_input_socket("NodeSocketVector", "Vector")

@@ -579,0 +647,4 @@
+    bl_icon = "EMPTY_ARROWS"
+
+    def init(self, context):
+        self.add_optional_input_socket("NodeSocketVector", "U")

@@ -579,0 +658,4 @@
+        w = self._get_optional_input_value("W", Vector)
+        a = v - u
+        b = w - u
+        normal = a.cross(b)

@@ -579,0 +680,4 @@
+
+class RotateTowards(AbstractPowerShipNode):
+    """ Calculate the rotation from a vector with a track and up axis
+    based on the given origin, destination. """

@@ -579,0 +695,4 @@
+    up: bpy.props.EnumProperty(  # type: ignore
+        name="Up",
+        items=_enum_up_axis_items,
+        default='Y'

@@ -579,0 +707,4 @@
+
+    def init(self, context):
+        self.add_optional_input_socket("NodeSocketVector", "Origin")
+        self.add_optional_input_socket("NodeSocketVector", "Destination")

@@ -579,0 +724,4 @@
+    bl_idname = "OffsetRotation"
+    bl_label = "Offset Rotation"
+    bl_icon = "EMPTY_ARROWS"
+    default_value = Quaternion()

@@ -579,0 +772,4 @@
+    angle_type: bpy.props.EnumProperty(  # type: ignore
+        name="Type",
+        items=[
+            ("DEFAULT", "Unsigned", ""),

@@ -579,0 +794,4 @@
+        signed = self.angle_type == 'SIGNED'
+
+        angle = 0
+        if not (u.length == 0 or v.length == 0):

@@ -579,0 +845,4 @@
+            case 'SUBSTRACT':
+                res = u-v
+            case 'DIVIDE':
+                res = Vector([x/y if y != 0.0 else float("nan")

@@ -579,0 +850,4 @@
+            case 'CROSS':
+                res = u.cross(v)
+            case _:
+                print("Vector math operation not found:", self.operation)

@@ -579,0 +851,4 @@
+                res = u.cross(v)
+            case _:
+                print("Vector math operation not found:", self.operation)
+                raise ValueError

@@ -579,0 +897,4 @@
+            case 'SUBSTRACT':
+                res = u-v
+            case 'DIVIDE':
+                res = u/v if v != 0 else float("nan")

@@ -579,0 +900,4 @@
+                res = u/v if v != 0 else float("nan")
+            case _:
+                print("Math operation not found:", self.operation)
+                raise ValueError

@@ -658,0 +997,4 @@
+        match self.space:
+            case "WORLD":
+                bone_mat_world = Matrix.LocRotScale(
+                    loc, rot.normalized(), scale)

@@ -1023,3 +1321,3 @@
             nodeitems_utils.NodeItem("ToEulerNode"),
             nodeitems_utils.NodeItem("FromEulerNode"),
-        ],
+        ]