diff options
Diffstat (limited to 'add_mesh_twisted_torus.py')
-rw-r--r-- | add_mesh_twisted_torus.py | 389 |
1 files changed, 286 insertions, 103 deletions
diff --git a/add_mesh_twisted_torus.py b/add_mesh_twisted_torus.py index d571e18b..ce6677fb 100644 --- a/add_mesh_twisted_torus.py +++ b/add_mesh_twisted_torus.py @@ -23,12 +23,12 @@ bl_addon_info = { 'name': 'Add Mesh: Twisted Torus', 'author': 'Paulo_Gomes', - 'version': '0.10', + 'version': '0.11', 'blender': (2, 5, 3), 'location': 'View3D > Add > Mesh ', 'description': 'Adds a mesh Twisted Torus to the Add Mesh menu', 'url': 'http://wiki.blender.org/index.php/Extensions:2.5/Py/' \ - 'Scripts/Add_Mesh/Add_Twisted_Torus', + 'Scripts/Add_Mesh/Add_Twisted_Torus', 'category': 'Add Mesh'} @@ -53,61 +53,249 @@ Usage: import bpy +from bpy.props import * + import mathutils +from mathutils import * from math import cos, sin, pi -def add_twisted_torus(major_rad, minor_rad, major_seg, minor_seg, twists): - Vector = mathutils.Vector - Quaternion = mathutils.Quaternion +# Stores the values of a list of properties and the +# operator id in a property group ('recall_op') inside the object. +# Could (in theory) be used for non-objects. +# Note: Replaces any existing property group with the same name! +# ob ... Object to store the properties in. +# op ... The operator that should be used. +# op_args ... A dictionary with valid Blender +# properties (operator arguments/parameters). +def store_recall_properties(ob, op, op_args): + if ob and op and op_args: + recall_properties = {} + + # Add the operator identifier and op parameters to the properties. + recall_properties['op'] = op.bl_idname + recall_properties['args'] = op_args + + # Store new recall properties. + ob['recall'] = recall_properties + + +# Apply view rotation to objects if "Align To" for +# new objects was set to "VIEW" in the User Preference. +def apply_object_align(context, ob): + obj_align = bpy.context.user_preferences.edit.object_align + + if (context.space_data.type == 'VIEW_3D' + and obj_align == 'VIEW'): + view3d = context.space_data + region = view3d.region_3d + viewMatrix = region.view_matrix + rot = viewMatrix.rotation_part() + ob.rotation_euler = rot.invert().to_euler() + + +# Create a new mesh (object) from verts/edges/faces. +# verts/edges/faces ... List of vertices/edges/faces for the +# new mesh (as used in from_pydata). +# name ... Name of the new mesh (& object). +# edit ... Replace existing mesh data. +# Note: Using "edit" will destroy/delete existing mesh data. +def create_mesh_object(context, verts, edges, faces, name, edit): + scene = context.scene + obj_act = scene.objects.active + + # Can't edit anything, unless we have an active obj. + if edit and not obj_act: + return None + + # Create new mesh + mesh = bpy.data.meshes.new(name) + + # Make a mesh from a list of verts/edges/faces. + mesh.from_pydata(verts, edges, faces) + + # Update mesh geometry after adding stuff. + mesh.update() + + # Deselect all objects. + bpy.ops.object.select_all(action='DESELECT') + + if edit: + # Replace geometry of existing object + + # Use the active obj and select it. + ob_new = obj_act + ob_new.selected = True + + if obj_act.mode == 'OBJECT': + # Get existing mesh datablock. + old_mesh = ob_new.data + + # Set object data to nothing + ob_new.data = None + + # Clear users of existing mesh datablock. + old_mesh.user_clear() + + # Remove old mesh datablock if no users are left. + if (old_mesh.users == 0): + bpy.data.meshes.remove(old_mesh) + + # Assign new mesh datablock. + ob_new.data = mesh + + else: + # Create new object + ob_new = bpy.data.objects.new(name, mesh) + + # Link new object to the given scene and select it. + scene.objects.link(ob_new) + ob_new.selected = True + + # Place the object at the 3D cursor location. + ob_new.location = scene.cursor_location + + apply_object_align(context, ob_new) + + if obj_act and obj_act.mode == 'EDIT': + if not edit: + # We are in EditMode, switch to ObjectMode. + bpy.ops.object.mode_set(mode='OBJECT') + + # Select the active object as well. + obj_act.selected = True + + # Apply location of new object. + scene.update() + + # Join new object into the active. + bpy.ops.object.join() + + # Switching back to EditMode. + bpy.ops.object.mode_set(mode='EDIT') + + ob_new = obj_act + + else: + # We are in ObjectMode. + # Make the new object the active one. + scene.objects.active = ob_new + + return ob_new + + +# A very simple "bridge" tool. +# Connects two equally long vertex rows with faces. +# Returns a list of the new faces (list of lists) +# +# vertIdx1 ... First vertex list (list of vertex indices). +# vertIdx2 ... Second vertex list (list of vertex indices). +# closed ... Creates a loop (first & last are closed). +# flipped ... Invert the normal of the face(s). +# +# Note: You can set vertIdx1 to a single vertex index to create +# a fan/star of faces. +# Note: If both vertex idx list are the same length they have +# to have at least 2 vertices. +def createFaces(vertIdx1, vertIdx2, closed=False, flipped=False): + faces = [] - PI_2 = pi * 2 - z_axis = (0, 0, 1) + if not vertIdx1 or not vertIdx2: + return None + + if len(vertIdx1) < 2 and len(vertIdx2) < 2: + return None + + fan = False + if (len(vertIdx1) != len(vertIdx2)): + if (len(vertIdx1) == 1 and len(vertIdx2) > 1): + fan = True + else: + return None + + total = len(vertIdx2) + + if closed: + # Bridge the start with the end. + if flipped: + face = [ + vertIdx1[0], + vertIdx2[0], + vertIdx2[total - 1]] + if not fan: + face.append(vertIdx1[total - 1]) + faces.append(face) + + else: + face = [vertIdx2[0], vertIdx1[0]] + if not fan: + face.append(vertIdx1[total - 1]) + face.append(vertIdx2[total - 1]) + faces.append(face) + + # Bridge the rest of the faces. + for num in range(total - 1): + if flipped: + if fan: + face = [vertIdx2[num], vertIdx1[0], vertIdx2[num + 1]] + else: + face = [vertIdx2[num], vertIdx1[num], + vertIdx1[num + 1], vertIdx2[num + 1]] + faces.append(face) + else: + if fan: + face = [vertIdx1[0], vertIdx2[num], vertIdx2[num + 1]] + else: + face = [vertIdx1[num], vertIdx2[num], + vertIdx2[num + 1], vertIdx1[num + 1]] + faces.append(face) + + return faces + + +def add_twisted_torus(major_rad, minor_rad, major_seg, minor_seg, twists): + PI_2 = pi * 2.0 + z_axis = (0.0, 0.0, 1.0) verts = [] faces = [] - i1 = 0 - tot_verts = major_seg * minor_seg + + edgeloop_prev = [] for major_index in range(major_seg): quat = Quaternion(z_axis, (major_index / major_seg) * PI_2) - rot_twists = 2 * pi * major_index / major_seg * twists + rot_twists = PI_2 * major_index / major_seg * twists + edgeloop = [] + + # Create section ring for minor_index in range(minor_seg): - angle = (2 * pi * minor_index / minor_seg) + rot_twists + angle = (PI_2 * minor_index / minor_seg) + rot_twists - vec = Vector(major_rad + (cos(angle) * minor_rad), 0.0, - (sin(angle) * minor_rad)) * quat + vec = Vector( + major_rad + (cos(angle) * minor_rad), + 0.0, + sin(angle) * minor_rad) + vec = vec * quat - verts.extend([vec.x, vec.y, vec.z]) + edgeloop.append(len(verts)) + verts.append(vec) - if minor_index + 1 == minor_seg: - i2 = (major_index) * minor_seg - i3 = i1 + minor_seg - i4 = i2 + minor_seg + # Remember very first edgeloop. + if major_index == 0: + edgeloop_first = edgeloop - else: - i2 = i1 + 1 - i3 = i1 + minor_seg - i4 = i3 + 1 - - if i2 >= tot_verts: - i2 = i2 - tot_verts - if i3 >= tot_verts: - i3 = i3 - tot_verts - if i4 >= tot_verts: - i4 = i4 - tot_verts - - # stupid eekadoodle - if i2: - faces.extend([i1, i3, i4, i2]) - else: - faces.extend([i2, i1, i3, i4]) + # Bridge last with current ring + if edgeloop_prev: + f = createFaces(edgeloop_prev, edgeloop, closed=True) + faces.extend(f) - i1 += 1 + edgeloop_prev = edgeloop - return verts, faces + # Bridge first and last ring + f = createFaces(edgeloop_prev, edgeloop_first, closed=True) + faces.extend(f) -from bpy.props import * + return verts, faces class AddTwistedTorus(bpy.types.Operator): @@ -116,37 +304,51 @@ class AddTwistedTorus(bpy.types.Operator): bl_label = "Add Torus" bl_options = {'REGISTER', 'UNDO'} + # edit - Whether to add or update. + edit = BoolProperty(name="", + description="", + default=False, + options={'HIDDEN'}) major_radius = FloatProperty(name="Major Radius", - description="Radius from the origin to the center of the cross section", - default=1.0, min=0.01, max=100.0) - + description="Radius from the origin to the" \ + " center of the cross section", + min=0.01, + max=100.0, + default=1.0) minor_radius = FloatProperty(name="Minor Radius", - description="Radius of the torus' cross section", - default=0.25, min=0.01, max=100.0) - + description="Radius of the torus' cross section", + min=0.01, + max=100.0, + default=0.25) major_segments = IntProperty(name="Major Segments", - description="Number of segments for the main ring of the torus", - default=48, min=3, max=256) - + description="Number of segments for the main ring of the torus", + min=3, + max=256, + default=48) minor_segments = IntProperty(name="Minor Segments", - description="Number of segments for the minor ring of the torus", - default=12, min=3, max=256) - + description="Number of segments for the minor ring of the torus", + min=3, + max=256, + default=12) twists = IntProperty(name="Twists", - description="Number of twists of the torus", - default=0, min=0, max=10) + description="Number of twists of the torus", + min=0, + max=256, + default=1) use_abso = BoolProperty(name="Use Int+Ext Controls", - description="Use the Int / Ext controls for torus dimensions", - default=False) - + description="Use the Int / Ext controls for torus dimensions", + default=False) abso_major_rad = FloatProperty(name="Exterior Radius", - description="Total Exterior Radius of the torus", - default=1.0, min=0.01, max=100.0) - + description="Total Exterior Radius of the torus", + min=0.01, + max=100.0, + default=1.0) abso_minor_rad = FloatProperty(name="Inside Radius", - description="Total Interior Radius of the torus", - default=0.5, min=0.01, max=100.0) + description="Total Interior Radius of the torus", + min=0.01, + max=100.0, + default=0.5) def execute(self, context): props = self.properties @@ -156,48 +358,29 @@ class AddTwistedTorus(bpy.types.Operator): props.major_radius = props.abso_minor_rad + extra_helper props.minor_radius = extra_helper - verts_loc, faces = add_twisted_torus(props.major_radius, - props.minor_radius, - props.major_segments, - props.minor_segments, - props.twists) - - mesh = bpy.data.meshes.new("TwistedTorus") - - mesh.add_geometry(int(len(verts_loc) / 3), 0, int(len(faces) / 4)) - mesh.verts.foreach_set("co", verts_loc) - mesh.faces.foreach_set("verts_raw", faces) - mesh.faces.foreach_set("smooth", [False] * len(mesh.faces)) - - scene = context.scene - - # ugh - for ob in scene.objects: - ob.selected = False - - mesh.update() - ob_new = bpy.data.objects.new("TwistedTorus", mesh) - scene.objects.link(ob_new) - ob_new.selected = True - - ob_new.location = scene.cursor_location - - obj_act = scene.objects.active - - if obj_act and obj_act.mode == 'EDIT': - bpy.ops.object.mode_set(mode='OBJECT') - - obj_act.selected = True - scene.update() # apply location - #scene.objects.active = ob_new - - bpy.ops.object.join() # join into the active. - - bpy.ops.object.mode_set(mode='EDIT') - else: - scene.objects.active = ob_new - if context.user_preferences.edit.enter_edit_mode: - bpy.ops.object.mode_set(mode='EDIT') + verts, faces = add_twisted_torus( + props.major_radius, + props.minor_radius, + props.major_segments, + props.minor_segments, + props.twists) + + # Actually create the mesh object from this geometry data. + obj = create_mesh_object(context, verts, [], faces, "TwistedTorus", + props.edit) + + # Store 'recall' properties in the object. + recall_args_list = { + "edit": True, + "major_radius": props.major_radius, + "minor_radius": props.minor_radius, + "major_segments": props.major_segments, + "minor_segments": props.minor_segments, + "twists": props.twists, + "use_abso": props.use_abso, + "abso_major_rad": props.abso_major_rad, + "abso_minor_rad": props.abso_minor_rad} + store_recall_properties(obj, self, recall_args_list) return {'FINISHED'} @@ -205,7 +388,7 @@ class AddTwistedTorus(bpy.types.Operator): # Add to the menu menu_func = (lambda self, context: self.layout.operator(AddTwistedTorus.bl_idname, - text="TwistedTorus", icon='MESH_DONUT')) + text="Twisted Torus", icon='MESH_DONUT')) def register(): |