Fix: Issue with Parts Library File

An issue occurred if you opened Blender with a new file. The library file pointed relative to
the Blender App, not the working directory so was not found. Parts Library file is now moved
to the Parts Library Menu, so must be set for a new blend file, existing saved blend files are not
affected by this change.

Error message altered to reflect the option of having this Parts Library anywhere.

__init__.py

@@ -29,8 +29,8 @@
 bl_info = {
     "name": "Precision Drawing Tools (PDT)",
     "author": "Alan Odom (Clockmender), Rune Morling (ermo)",
-    "version": (1, 3, 0),
-    "blender": (2, 80, 2),
+    "version": (1, 2, 2),
+    "blender": (2, 80, 0),
     "location": "View3D > UI > PDT",
     "description": "Precision Drawing Tools for Acccurate Modelling",
     "warning": "",
@@ -54,6 +54,7 @@
     importlib.reload(pdt_bix)
     importlib.reload(pdt_etof)
     importlib.reload(pdt_tangent)
+    importlib.reload(pdt_trig_waves)
 else:
     from . import pdt_design
     from . import pdt_pivot_point
@@ -64,11 +65,17 @@
     from . import pdt_bix
     from . import pdt_etof
     from . import pdt_tangent
+    from . import pdt_trig_waves
 
 import bpy
 import os
 from pathlib import Path
-from bpy.types import AddonPreferences, PropertyGroup, Scene, WindowManager
+from bpy.types import (
+    AddonPreferences,
+    PropertyGroup, Scene,
+    WindowManager,
+    Object,
+)
 from bpy.props import (
     BoolProperty,
     CollectionProperty,
@@ -130,6 +137,39 @@
 _pdt_mat_items = []
 
 
+class PDTPreferences(AddonPreferences):
+    # This must match the addon name, use '__package__'
+    # when defining this in a submodule of a python package.
+
+    bl_idname = __name__
+
+    debug: BoolProperty(
+        name="Enable console debug output from PDT scripts",
+        default=False,
+        description="NOTE: Does not enable debugging globally in Blender (only in PDT scripts)",
+    )
+
+    pdt_ui_width: IntProperty(
+        name="UI Width Cut-off",
+        default=350,
+        description="Cutoff width for shrinking items per line in menus",
+    )
+
+    pdt_input_round: IntProperty(
+        name="Input Rounding", default=5, description="Rounding Factor for Inputs"
+    )
+
+    def draw(self, context):
+        layout = self.layout
+
+        box = layout.box()
+        row1 = box.row()
+        row2 = box.row()
+        row1.prop(self, "debug")
+        row2.prop(self, "pdt_ui_width")
+        row2.prop(self, "pdt_input_round")
+
+
 def enumlist_objects(self, context):
     """Populate Objects List from Parts Library.
 
@@ -145,8 +185,8 @@ def enumlist_objects(self, context):
 
     scene = context.scene
     pg = scene.pdt_pg
-    file_path = context.preferences.addons[__package__].preferences.pdt_library_path
-    path = Path(file_path)
+    file_path = pg.pdt_library_path
+    path = Path(bpy.path.abspath(file_path))
     _pdt_obj_items.clear()
 
     if path.is_file() and ".blend" in str(path):
@@ -158,7 +198,7 @@ def enumlist_objects(self, context):
         for object_name in object_names:
             _pdt_obj_items.append((object_name, object_name, ""))
     else:
-        _pdt_obj_items.append(("MISSING", "Library is Missing", ""))
+        _pdt_obj_items.append(("MISSING", "Library Not Set", ""))
     return _pdt_obj_items
 
 
@@ -177,8 +217,8 @@ def enumlist_collections(self, context):
 
     scene = context.scene
     pg = scene.pdt_pg
-    file_path = context.preferences.addons[__package__].preferences.pdt_library_path
-    path = Path(file_path)
+    file_path = pg.pdt_library_path
+    path = Path(bpy.path.abspath(file_path))
     _pdt_col_items.clear()
 
     if path.is_file() and ".blend" in str(path):
@@ -192,7 +232,7 @@ def enumlist_collections(self, context):
         for object_name in object_names:
             _pdt_col_items.append((object_name, object_name, ""))
     else:
-        _pdt_col_items.append(("MISSING", "Library is Missing", ""))
+        _pdt_col_items.append(("MISSING", "Library Not Set", ""))
     return _pdt_col_items
 
 
@@ -211,8 +251,8 @@ def enumlist_materials(self, context):
 
     scene = context.scene
     pg = scene.pdt_pg
-    file_path = context.preferences.addons[__package__].preferences.pdt_library_path
-    path = Path(file_path)
+    file_path = pg.pdt_library_path
+    path = Path(bpy.path.abspath(file_path))
     _pdt_mat_items.clear()
 
     if path.is_file() and ".blend" in str(path):
@@ -226,13 +266,21 @@ def enumlist_materials(self, context):
         for object_name in object_names:
             _pdt_mat_items.append((object_name, object_name, ""))
     else:
-        _pdt_mat_items.append(("MISSING", "Library is Missing", ""))
+        _pdt_mat_items.append(("MISSING", "Library Not Set", ""))
     return _pdt_mat_items
 
 
 class PDTSceneProperties(PropertyGroup):
     """Contains all PDT related properties."""
 
+    pdt_library_path: StringProperty(
+        name="Library",
+        default="",
+        description="Parts Library File",
+        maxlen=1024,
+        subtype="FILE_PATH",
+    )
+
     object_search_string: StringProperty(name="Search", default="", description=PDT_DES_LIBSER)
     collection_search_string: StringProperty(name="Search", default="", description=PDT_DES_LIBSER)
     material_search_string: StringProperty(name="Search", default="", description=PDT_DES_LIBSER)
@@ -429,48 +477,34 @@ class PDTSceneProperties(PropertyGroup):
         description=PDT_DES_TANMODE,
     )
 
-
-class PDTPreferences(AddonPreferences):
-    # This must match the addon name, use '__package__'
-    # when defining this in a submodule of a python package.
-
-    bl_idname = __name__
-
-    pdt_library_path: StringProperty(
-        name="Parts Library",
-        default="",
-        description="Parts Library File",
-        maxlen=1024,
-        subtype="FILE_PATH",
-    )
-
-    debug: BoolProperty(
-        name="Enable console debug output from PDT scripts",
-        default=False,
-        description="NOTE: Does not enable debugging globally in Blender (only in PDT scripts)",
-    )
-
-    pdt_ui_width: IntProperty(
-        name="UI Width Cut-off",
-        default=350,
-        description="Cutoff width for shrinking items per line in menus",
-    )
-
-    pdt_input_round: IntProperty(
-        name="Input Rounding", default=5, description="Rounding Factor for Inputs"
-    )
-
-    def draw(self, context):
-        layout = self.layout
-
-        box = layout.box()
-        row1 = box.row()
-        row2 = box.row()
-        row3 = box.row()
-        row1.prop(self, "debug")
-        row2.prop(self, "pdt_ui_width")
-        row2.prop(self, "pdt_input_round")
-        row3.prop(self, "pdt_library_path")
+    # For Trig Waves
+    trig_type : EnumProperty(
+        items=(
+            ("sin", "Sine", "Sine Wave"),
+            ("cos", "Cosine", "Cosine Wave"),
+            ("tan", "Tangent", "Tangent Wave"),
+        ),
+        name="Wave Form",
+        default="sin",
+        description="Trig. Wave Form",
+    )
+    trig_cycles : IntProperty(name="Cycles #", default=1, min=1,
+        description="1 Cycle = 180 Degrees")
+    trig_amp : FloatProperty(name="Amplitude", default=1, min=0.01,
+        description="Maximum Height of 1 Cycle (forms Basis for Tangents)")
+    trig_len : FloatProperty(name="Cycle Length", default=2, min=0.02,
+        description="Length in Blender Units of 1 Cycle")
+    trig_obj : PointerProperty(name="Object", type=Object)
+    trig_del : BoolProperty(name="Empty Object", default=False,
+        description="Delete ALL Vertices in Object First")
+    trig_res : IntProperty(name="Resolution", default=18, min=4, max=72,
+        description="Number of Vertices per Cycle (180 Degrees)")
+    trig_tanmax : FloatProperty(name="Tangent Max", default=10, min=0.1,
+        description="Maximum Permitted Tangent Value")
+    trig_off : FloatVectorProperty(name="Start Loc", default=(0,0,0),
+        description="Location in World Space for Origin of Wave")
+    trig_abs : BoolProperty(name="Absolute", default=False,
+        description="Use Absolute Values Only")
 
 
 # List of All Classes in the Add-on to register
@@ -479,8 +513,8 @@ def draw(self, context):
 # (and unloaded last)
 #
 classes = (
-    PDTSceneProperties,
     PDTPreferences,
+    PDTSceneProperties,
     pdt_bix.PDT_OT_LineOnBisection,
     pdt_command.PDT_OT_CommandReRun,
     pdt_design.PDT_OT_PlacementAbs,
@@ -507,6 +541,7 @@ def draw(self, context):
     pdt_menus.PDT_PT_PanelViewControl,
     pdt_menus.PDT_PT_PanelPivotPoint,
     pdt_menus.PDT_PT_PanelPartsLibrary,
+    pdt_menus.PDT_PT_PanelTrig,
     pdt_pivot_point.PDT_OT_ModalDrawOperator,
     pdt_pivot_point.PDT_OT_ViewPlaneRotate,
     pdt_pivot_point.PDT_OT_ViewPlaneScale,
@@ -523,6 +558,7 @@ def draw(self, context):
     pdt_tangent.PDT_OT_TangentSet3,
     pdt_tangent.PDT_OT_TangentSet4,
     pdt_tangent.PDT_OT_TangentExpandMenu,
+    pdt_trig_waves.PDT_OT_WaveGenerator,
     pdt_view.PDT_OT_ViewRot,
     pdt_view.PDT_OT_ViewRotL,
     pdt_view.PDT_OT_ViewRotR,

pdt_library.py

@@ -48,7 +48,7 @@ def execute(self, context):
 
         scene = context.scene
         pg = scene.pdt_pg
-        file_path = context.preferences.addons[__package__].preferences.pdt_library_path
+        file_path = pg.pdt_library_path
         pg.error = str(Path(file_path))
         debug("PDT Parts Library:")
         debug(f"{pg.error}")
@@ -89,10 +89,10 @@ def execute(self, context):
                 return {"FINISHED"}
 
         obj_names = [o.name for o in context.view_layer.objects].copy()
-        file_path = context.preferences.addons[__package__].preferences.pdt_library_path
+        file_path = pg.pdt_library_path
         path = Path(file_path)
 
-        if path.is_file() and ".blend" in str(path):
+        if path.is_file() and str(path).endswith(".blend"):
             if pg.lib_mode == "OBJECTS":
                 bpy.ops.wm.append(
                     filepath=str(path),
@@ -170,9 +170,10 @@ def execute(self, context):
                 self.report({"ERROR"}, error_message)
                 return {"FINISHED"}
 
-        file_path = context.preferences.addons[__package__].preferences.pdt_library_path
+        file_path = pg.pdt_library_path
         path = Path(file_path)
-        if path.is_file() and ".blend" in str(path):
+
+        if path.is_file() and str(path).endswith(".blend"):
             if pg.lib_mode == "OBJECTS":
                 bpy.ops.wm.link(
                     filepath=str(path),

pdt_menus.py

@@ -306,6 +306,8 @@ def draw(self, context):
         layout = self.layout
         pdt_pg = context.scene.pdt_pg
         row = layout.row()
+        row.prop(pdt_pg, "pdt_library_path")
+        row = layout.row()
         col = row.column()
         col.operator("pdt.append", text="Append")
         col = row.column()
@@ -339,7 +341,7 @@ def draw(self, context):
         row = box.row()
         row.prop(pdt_pg, "lib_materials", text="")
         row = box.row()
-        row.operator("pdt.lib_show", text="Show Library File", icon='INFO')
+        #row.operator("pdt.lib_show", text="Load Library File", icon='INFO')
 
 
 class PDT_PT_PanelViewControl(Panel):
@@ -474,3 +476,40 @@ def draw(self,context):
             split.prop(pdt_pg, "tangent_radius1", text="")
             row = box.row()
             row.operator("pdt.tangentoperate", text="Tangents From Inputs", icon="NONE")
+
+class PDT_PT_PanelTrig(Panel):
+    bl_idname = "PDT_PT_PanelTrig"
+    bl_label = "PDT Trigonometrical Waves"
+    bl_space_type = "VIEW_3D"
+    bl_region_type = "UI"
+    bl_category = "PDT"
+    bl_options = {'DEFAULT_CLOSED'}
+
+    def draw(self,context):
+        layout = self.layout
+        pdt_pg = context.scene.pdt_pg
+        row = layout.row()
+        row.label(text=f"Working {PDT_LAB_PLANE}:")
+        row.prop(pdt_pg, "plane", text="")
+
+        row = layout.row()
+        split = row.split(factor=0.5, align=True)
+        split.prop(pdt_pg, "trig_type")
+        split.prop(pdt_pg, "trig_cycles")
+        row = layout.row()
+        split = row.split(factor=0.5, align=True)
+        split.prop(pdt_pg, "trig_amp")
+        split.prop(pdt_pg, "trig_len")
+        row = layout.row()
+        split = row.split(factor=0.5, align=True)
+        split.prop(pdt_pg, "trig_obj", text="")
+        split.prop(pdt_pg, "trig_del")
+        row = layout.row()
+        split = row.split(factor=0.5, align=True)
+        split.prop(pdt_pg, "trig_res")
+        split.prop(pdt_pg, "trig_tanmax")
+        row = layout.row()
+        row.prop(pdt_pg, "trig_off")
+        row = layout.row()
+        row.operator("pdt.wave_generator", icon="SEQ_LUMA_WAVEFORM")
+        row.prop(pdt_pg, "trig_abs")

pdt_msg_strings.py

@@ -94,8 +94,8 @@
 PDT_ERR_NOPPLOC = (
     "Custom Property PDT_PP_LOC for this object not found, have you Written it yet?"
 )
-PDT_ERR_NO_LIBRARY = ("PDT Library Blend File (parts_library.blend) is Missing "
-                      + "from Addons/clockworxpdt Folder")
+PDT_ERR_NO_LIBRARY = ("PDT Library Blend File is Missing "
+                      + "or not Correctly Set to a Blend File")
 
 PDT_ERR_SEL_1_VERTI = "Select at least 1 Vertex Individually (Currently selected:"
 PDT_ERR_SEL_1_VERT = "Select at least 1 Vertex (Currently selected:"