[Bf-extensions-cvs] SVN commit: /data/svn/bf-extensions [503] trunk/py/scripts/addons/ add_mesh_3d_function_surface.py: * Version 0.3 of the script
Martin Bürbaum
martin.buerbaum at gmx.at
Tue Mar 23 21:37:41 CET 2010
Revision: 503
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-extensions&revision=503
Author: pontiac
Date: 2010-03-23 21:37:41 +0100 (Tue, 23 Mar 2010)
Log Message:
-----------
* Version 0.3 of the script
* X,Y,Z Function Surface (by Ed Mackey & tuga3d). See http://wiki.blender.org/index.php/Extensions_talk:2.5/Py/Scripts/Add_3d_Function_Surface for examples.
* Renamed old "3D Function Surface" to "Z Function Surface".
* Align the geometry to the view if the user preference says so.
* Store recall properties in newly created object. (only usable in combination with "Recall object operator")
Modified Paths:
--------------
trunk/py/scripts/addons/add_mesh_3d_function_surface.py
Modified: trunk/py/scripts/addons/add_mesh_3d_function_surface.py
===================================================================
--- trunk/py/scripts/addons/add_mesh_3d_function_surface.py 2010-03-23 20:21:31 UTC (rev 502)
+++ trunk/py/scripts/addons/add_mesh_3d_function_surface.py 2010-03-23 20:37:41 UTC (rev 503)
@@ -17,16 +17,17 @@
# ##### END GPL LICENSE BLOCK #####
import bpy
-import Mathutils
+from Mathutils import *
from math import *
from bpy.props import *
bl_addon_info = {
- 'name': 'Add Mesh: 3D Function Surface',
+ 'name': 'Add Mesh: 3D Function Surfaces',
'author': 'Buerbaum Martin (Pontiac)',
- 'version': '0.2.3',
+ 'version': '0.3',
'blender': (2, 5, 3),
- 'location': 'View3D > Add > Mesh > 3D Function Surface',
+ 'location': 'View3D > Add > Mesh > Z Function Surface &' \
+ ' XYZ Function Surface',
'url': 'http://wiki.blender.org/index.php/Extensions:2.5/Py/' \
'Scripts/Add_3d_Function_Surface',
'category': 'Add Mesh'}
@@ -36,19 +37,35 @@
# http://blenderartists.org/forum/showthread.php?t=179043
__bpydoc__ = """
-3D Function Surface
+Z Function Surface
This script lets the user create a surface where the z coordinate
is a function of the x and y coordinates.
z = f(x,y)
+X,Y,Z Function Surface
+
+This script lets the user create a surface where the x, y and z
+coordinates are defiend by a function.
+
+ x = f(u,v)
+ y = f(u,v)
+ z = f(u,v)
+
Usage:
You have to activated the script in the "Add-Ons" tab (user preferences).
The functionality can then be accessed via the
-"Add Mesh" -> "3D Function Surface" menu.
+"Add Mesh" -> "Z Function Surface"
+and
+"Add Mesh" -> "X,Y,Z Function Surface"
+menu.
Version history:
+v0.3 - X,Y,Z Function Surface (by Ed Mackey & tuga3d).
+ Renamed old function to "Z Function Surface".
+ Align the geometry to the view if the user preference says so.
+ Store recall properties in newly created object.
v0.2.3 - Use bl_addon_info for Add-On information.
v0.2.2 - Fixed Add-On registration text.
v0.2.1 - Fixed some new API stuff.
@@ -66,7 +83,6 @@
v0.1 - Initial revision.
"""
-
# List of safe functions for eval()
safe_list = ['math', 'acos', 'asin', 'atan', 'atan2', 'ceil', 'cos', 'cosh',
'degrees', 'e', 'exp', 'fabs', 'floor', 'fmod', 'frexp', 'hypot',
@@ -74,12 +90,36 @@
'sin', 'sinh', 'sqrt', 'tan', 'tanh']
# Use the list to filter the local namespace
-safe_dict = dict([(k, locals().get(k, None)) for k in safe_list])
+safe_dict = dict([(k, globals().get(k, None)) for k in safe_list])
-# Add any needed builtins back in.
-safe_dict['abs'] = abs
+# Stores the values of a list of properties in a
+# property group (named like the operator) in the object.
+# Always replaces any existing property group with the same name!
+# @todo: Should we do this in EDIT Mode? Sounds dangerous.
+def obj_store_recall_properties(ob, op, prop_list):
+ if ob and op and prop_list:
+ #print("Storing recall data for operator: " + op.bl_idname) # DEBUG
+ # Store new recall properties.
+ prop_list['recall_op'] = op.bl_idname
+ ob['recall'] = prop_list
+
+
+# Apply view rotation to objects if "Align To" for new objects
+# was set to "VIEW" in the User Preference.
+def apply_view_rotation(context, ob):
+ align = bpy.context.user_preferences.edit.object_align
+
+ if (context.space_data.type == 'VIEW_3D'
+ and 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()
+
+
def createFaces(vertIdx1, vertIdx2, ring):
'''
A very simple "bridge" tool.
@@ -110,9 +150,11 @@
return faces
-def createObject(scene, verts, faces, name):
+def createObject(context, verts, faces, name):
'''Creates Meshes & Objects for the given lists of vertices and faces.'''
+ scene = context.scene
+
# Create new mesh
mesh = bpy.data.meshes.new(name)
@@ -147,6 +189,8 @@
obj_act = scene.objects.active
+ apply_view_rotation(context, ob_new)
+
if obj_act and obj_act.mode == 'EDIT':
# We are in EditMode, switch to ObjectMode.
bpy.ops.object.mode_set(mode='OBJECT')
@@ -168,14 +212,16 @@
# Make the new object the active one.
scene.objects.active = ob_new
+ return ob_new
-class Add3DFunctionSurface(bpy.types.Operator):
+
+class AddZFunctionSurface(bpy.types.Operator):
'''Add a surface defined defined by a function z=f(x,y)'''
- bl_idname = "mesh.primitive_3d_function_surface"
- bl_label = "Add 3D Function Surface"
+ bl_idname = "mesh.primitive_z_function_surface"
+ bl_label = "Add Z Function Surface"
bl_options = {'REGISTER', 'UNDO'}
- equation = StringProperty(name="Equation",
+ equation = StringProperty(name="Z Equation",
description="Equation for z=f(x,y)",
default="1 - ( x**2 + y**2 )")
@@ -235,7 +281,7 @@
z = eval(equation, {"__builtins__": None}, safe_dict)
except:
- print("Add3DFunctionSurface: " \
+ print("AddZFunctionSurface: " \
"Could not evaluate equation '" + equation + "'\n")
return {'CANCELLED'}
@@ -244,13 +290,13 @@
if not (isinstance(z, int)
#or isinstance(z, long)
or isinstance(z, float)):
- print("Add3DFunctionSurface: " \
+ print("AddZFunctionSurface: " \
"eval() returned unsupported number type '" \
+ str(z) + "'\n")
return {'CANCELLED'}
edgeloop_cur.append(len(verts))
- verts.append([x, y, z])
+ verts.append((x, y, z))
if len(edgeloop_prev) > 0:
faces_row = createFaces(edgeloop_prev, edgeloop_cur, False)
@@ -258,35 +304,271 @@
edgeloop_prev = edgeloop_cur
- createObject(context.scene, verts, faces, "3D Function")
+ obj = createObject(context, verts, faces, "Z Function")
+ # Store 'recall' properties in the object.
+ recall_prop_list = {
+ "equation": equation,
+ "div_x": div_x,
+ "div_x": div_y,
+ "size_x": size_x,
+ "size_y": size_y}
+ obj_store_recall_properties(obj, self, recall_prop_list)
+
return {'FINISHED'}
+def xyz_function_surface_faces(x_eq, y_eq, z_eq,
+ range_u_min, range_u_max, range_u_step, wrap_u,
+ range_v_min, range_v_max, range_v_step, wrap_v):
+
+ verts = []
+ faces = []
+
+ uStep = (range_u_max - range_u_min) / range_u_step
+ vStep = (range_v_max - range_v_min) / range_v_step
+
+ uRange = range_u_step
+ if range_u_step == 0:
+ uRange = uRange + 1
+
+ vRange = range_v_step
+ if range_v_step == 0:
+ vRange = vRange + 1
+
+ for vN in range(vRange):
+ v = range_v_min + (vN * vStep)
+
+ for uN in range(uRange):
+ u = range_u_min + (uN * uStep)
+
+ safe_dict['u'] = u
+ safe_dict['v'] = v
+
+ # Try to evaluate the equation.
+ try:
+ x = eval(x_eq, {"__builtins__": None}, safe_dict)
+
+ except:
+ print("AddXYZFunctionSurface: " \
+ "Could not evaluate x equation '" + x_eq + "'\n")
+ return {'CANCELLED'}
+
+ try:
+ y = eval(y_eq, {"__builtins__": None}, safe_dict)
+
+ except:
+ print("AddXYZFunctionSurface: " \
+ "Could not evaluate y equation '" + y_eq + "'\n")
+ return {'CANCELLED'}
+
+ try:
+ z = eval(z_eq, {"__builtins__": None}, safe_dict)
+
+ except:
+ print("AddXYZFunctionSurface: " \
+ "Could not evaluate z equation '" + z_eq + "'\n")
+ return {'CANCELLED'}
+
+ # Accept only real numbers (no complex types)
+ # @todo: Support for "long" needed?
+ if not (isinstance(x, int)
+ or isinstance(x, float)):
+ print("AddXYZFunctionSurface: " \
+ "eval() returned unsupported number type '" \
+ + str(x) + " for x function.'\n")
+ return {'CANCELLED'}
+ if not (isinstance(y, int)
+ or isinstance(y, float)):
+ print("AddXYZFunctionSurface: " \
+ "eval() returned unsupported number type '" \
+ + str(y) + " for y function.'\n")
+ return {'CANCELLED'}
+ if not (isinstance(z, int)
+ or isinstance(z, float)):
+ print("AddXYZFunctionSurface: " \
+ "eval() returned unsupported number type '" \
+ + str(z) + " for z function.'\n")
+ return {'CANCELLED'}
+
+ verts.append((x, y, z))
+
+ for vN in range(1, range_v_step + 1):
+ vThis = vN
+
+ if (vThis >= vRange):
+ if wrap_v:
+ vThis = 0
+ else:
+ continue
+
+ for uN in range(1, range_u_step + 1):
+ uThis = uN
+
+ if (uThis >= uRange):
+ if wrap_u:
+ uThis = 0
+ else:
+ continue
+
+ faces.append([(vThis * uRange) + uThis,
+ (vThis * uRange) + uN - 1,
+ ((vN - 1) * uRange) + uN - 1,
+ ((vN - 1) * uRange) + uThis])
+
+ return verts, faces
+
+
+# Original Script "Parametric.py" by Ed Mackey.
+# -> http://www.blinken.com/blender-plugins.php
+# Partly converted for Blender 2.5 by tuga3d.
+#
+# Sphere:
+# x = sin(2*pi*u)*sin(pi*v)
+# y = cos(2*pi*u)*sin(pi*v)
+# z = cos(pi*v)
+# u_min = v_min = 0
+# u_max = v_max = 1
+#
+# "Snail shell"
+# x = 1.2**v*(sin(u)**2 *sin(v))
+# y = 1.2**v*(sin(u)*cos(u))
+# z = 1.2**v*(sin(u)**2 *cos(v))
+# u_min = 0
+# u_max = pi
+# v_min = -pi/4,
+# v max = 5*pi/2
+class AddXYZFunctionSurface(bpy.types.Operator):
+ '''Add a surface defined defined by 3 functions:''' \
+ + ''' x=f(u,v), y=f(u,v) and z=f(u,v)'''
+ bl_idname = "mesh.primitive_xyz_function_surface"
+ bl_label = "Add X,Y,Z Function Surface"
@@ Diff output truncated at 10240 characters. @@
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