mirror of http://CODE.RHODECODE.COM/u/O/O/O
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# ##### BEGIN GPL LICENSE BLOCK ##### |
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# |
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# This program is free software; you can redistribute it and/or |
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# modify it under the terms of the GNU General Public License |
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# as published by the Free Software Foundation; either version 2 |
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# of the License, or (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software Foundation, |
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# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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# |
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# ##### END GPL LICENSE BLOCK ##### |
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# --------------------------- LATTICE ALONG SURFACE -------------------------- # |
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# -------------------------------- version 0.3 ------------------------------- # |
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# # |
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# Automatically generate and assign a lattice that follows the active surface. # |
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# # |
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# (c) Alessandro Zomparelli # |
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# (2017) # |
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# # |
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# http://www.co-de-it.com/ # |
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# # |
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# ############################################################################ # |
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|
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import bpy |
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import bmesh |
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from bpy.types import Operator |
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from bpy.props import (BoolProperty, StringProperty, FloatProperty) |
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from mathutils import Vector |
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from .utils import * |
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def not_in(element, grid): |
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output = True |
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for loop in grid: |
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if element in loop: |
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output = False |
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break |
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return output |
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|
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def grid_from_mesh(mesh, swap_uv): |
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bm = bmesh.new() |
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bm.from_mesh(mesh) |
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verts_grid = [] |
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edges_grid = [] |
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faces_grid = [] |
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|
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running_grid = True |
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while running_grid: |
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verts_loop = [] |
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edges_loop = [] |
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faces_loop = [] |
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|
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# storing first point |
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verts_candidates = [] |
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if len(faces_grid) == 0: |
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# for first loop check all vertices |
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verts_candidates = bm.verts |
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else: |
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# for other loops start form the vertices of the first face |
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# the last loop, skipping already used vertices |
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verts_candidates = [v for v in bm.faces[faces_grid[-1][0]].verts if not_in(v.index, verts_grid)] |
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|
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# check for last loop |
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is_last = False |
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for vert in verts_candidates: |
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if len(vert.link_faces) == 1: # check if corner vertex |
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vert.select = True |
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verts_loop.append(vert.index) |
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is_last = True |
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break |
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if not is_last: |
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for vert in verts_candidates: |
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new_link_faces = [f for f in vert.link_faces if not_in(f.index, faces_grid)] |
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if len(new_link_faces) < 2: # check if corner vertex |
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vert.select = True |
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verts_loop.append(vert.index) |
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break |
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running_loop = len(verts_loop) > 0 |
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while running_loop: |
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bm.verts.ensure_lookup_table() |
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id = verts_loop[-1] |
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link_edges = bm.verts[id].link_edges |
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# storing second point |
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if len(verts_loop) == 1: # only one vertex stored in the loop |
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if len(faces_grid) == 0: # first loop # |
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edge = link_edges[swap_uv] # chose direction |
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for vert in edge.verts: |
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if vert.index != id: |
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vert.select = True |
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verts_loop.append(vert.index) # new vertex |
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edges_loop.append(edge.index) # chosen edge |
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faces_loop.append(edge.link_faces[0].index) # only one face |
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# edge.link_faces[0].select = True |
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else: # other loops # |
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# start from the edges of the first face of the last loop |
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for edge in bm.faces[faces_grid[-1][0]].edges: |
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# chose an edge starting from the first vertex that is not returning back |
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if bm.verts[verts_loop[0]] in edge.verts and \ |
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bm.verts[verts_grid[-1][0]] not in edge.verts: |
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for vert in edge.verts: |
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if vert.index != id: |
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vert.select = True |
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verts_loop.append(vert.index) |
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edges_loop.append(edge.index) |
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for face in edge.link_faces: |
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if not_in(face.index, faces_grid): |
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faces_loop.append(face.index) |
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# continuing the loop |
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else: |
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for edge in link_edges: |
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for vert in edge.verts: |
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store_data = False |
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if not_in(vert.index, verts_grid) and vert.index not in verts_loop: |
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if len(faces_loop) > 0: |
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bm.faces.ensure_lookup_table() |
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if vert not in bm.faces[faces_loop[-1]].verts: |
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store_data = True |
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else: |
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store_data = True |
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if store_data: |
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vert.select = True |
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verts_loop.append(vert.index) |
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edges_loop.append(edge.index) |
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for face in edge.link_faces: |
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if not_in(face.index, faces_grid): |
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faces_loop.append(face.index) |
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break |
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# ending condition |
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if verts_loop[-1] == id or verts_loop[-1] == verts_loop[0]: |
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running_loop = False |
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verts_grid.append(verts_loop) |
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edges_grid.append(edges_loop) |
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faces_grid.append(faces_loop) |
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if len(faces_loop) == 0: |
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running_grid = False |
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return verts_grid, edges_grid, faces_grid |
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|
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class lattice_along_surface(Operator): |
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bl_idname = "object.lattice_along_surface" |
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bl_label = "Lattice along Surface" |
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bl_description = ("Automatically add a Lattice modifier to the selected " |
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"object, adapting it to the active one.\nThe active " |
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"object must be a rectangular grid compatible with the " |
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"Lattice's topology") |
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bl_options = {'REGISTER', 'UNDO'} |
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set_parent : BoolProperty( |
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name="Set Parent", |
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default=True, |
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description="Automatically set the Lattice as parent" |
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) |
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flipNormals : BoolProperty( |
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name="Flip Normals", |
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default=False, |
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description="Flip normals direction" |
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) |
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swapUV : BoolProperty( |
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name="Swap UV", |
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default=False, |
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description="Flip grid's U and V" |
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) |
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flipU : BoolProperty( |
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name="Flip U", |
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default=False, |
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description="Flip grid's U") |
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flipV : BoolProperty( |
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name="Flip V", |
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default=False, |
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description="Flip grid's V" |
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) |
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flipW : BoolProperty( |
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name="Flip W", |
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default=False, |
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description="Flip grid's W" |
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) |
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use_groups : BoolProperty( |
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name="Vertex Group", |
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default=False, |
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description="Use active Vertex Group for lattice's thickness" |
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) |
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high_quality_lattice : BoolProperty( |
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name="High quality", |
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default=True, |
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description="Increase the the subdivisions in normal direction for a " |
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"more correct result" |
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) |
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hide_lattice : BoolProperty( |
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name="Hide Lattice", |
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default=True, |
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description="Automatically hide the Lattice object" |
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) |
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scale_x : FloatProperty( |
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name="Scale X", |
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default=1, |
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min=0.001, |
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max=1, |
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description="Object scale" |
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) |
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scale_y : FloatProperty( |
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name="Scale Y", default=1, |
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min=0.001, |
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max=1, |
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description="Object scale" |
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) |
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scale_z : FloatProperty( |
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name="Scale Z", |
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default=1, |
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min=0.001, |
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max=1, |
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description="Object scale" |
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) |
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thickness : FloatProperty( |
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name="Thickness", |
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default=1, |
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soft_min=0, |
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soft_max=5, |
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description="Lattice thickness" |
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) |
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displace : FloatProperty( |
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name="Displace", |
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default=0, |
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soft_min=-1, |
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soft_max=1, |
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description="Lattice displace" |
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) |
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grid_object = "" |
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source_object = "" |
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@classmethod |
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def poll(cls, context): |
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try: return bpy.context.object.mode == 'OBJECT' |
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except: return False |
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def draw(self, context): |
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layout = self.layout |
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col = layout.column(align=True) |
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col.label(text="Thickness:") |
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col.prop( |
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self, "thickness", text="Thickness", icon='NONE', expand=False, |
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slider=True, toggle=False, icon_only=False, event=False, |
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full_event=False, emboss=True, index=-1 |
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) |
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col.prop( |
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self, "displace", text="Offset", icon='NONE', expand=False, |
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slider=True, toggle=False, icon_only=False, event=False, |
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full_event=False, emboss=True, index=-1 |
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) |
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row = col.row() |
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row.prop(self, "use_groups") |
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col.separator() |
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col.label(text="Scale:") |
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col.prop( |
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self, "scale_x", text="U", icon='NONE', expand=False, |
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slider=True, toggle=False, icon_only=False, event=False, |
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full_event=False, emboss=True, index=-1 |
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) |
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col.prop( |
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self, "scale_y", text="V", icon='NONE', expand=False, |
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slider=True, toggle=False, icon_only=False, event=False, |
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full_event=False, emboss=True, index=-1 |
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) |
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col.separator() |
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col.label(text="Flip:") |
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row = col.row() |
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row.prop(self, "flipU", text="U") |
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row.prop(self, "flipV", text="V") |
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row.prop(self, "flipW", text="W") |
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col.prop(self, "swapUV") |
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col.prop(self, "flipNormals") |
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col.separator() |
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col.label(text="Lattice Options:") |
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col.prop(self, "high_quality_lattice") |
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col.prop(self, "hide_lattice") |
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col.prop(self, "set_parent") |
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def execute(self, context): |
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if self.source_object == self.grid_object == "" or True: |
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if len(bpy.context.selected_objects) != 2: |
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self.report({'ERROR'}, "Please, select two objects") |
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return {'CANCELLED'} |
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grid_obj = bpy.context.object |
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if grid_obj.type not in ('MESH', 'CURVE', 'SURFACE'): |
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self.report({'ERROR'}, "The surface object is not valid. Only Mesh," |
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"Curve and Surface objects are allowed.") |
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return {'CANCELLED'} |
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obj = None |
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for o in bpy.context.selected_objects: |
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if o.name != grid_obj.name and o.type in \ |
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('MESH', 'CURVE', 'SURFACE', 'FONT'): |
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obj = o |
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o.select_set(False) |
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break |
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try: |
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obj_dim = obj.dimensions |
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obj_me = simple_to_mesh(obj)#obj.to_mesh(bpy.context.depsgraph, apply_modifiers=True) |
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except: |
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self.report({'ERROR'}, "The object to deform is not valid. Only " |
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"Mesh, Curve, Surface and Font objects are allowed.") |
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return {'CANCELLED'} |
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self.grid_object = grid_obj.name |
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self.source_object = obj.name |
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else: |
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grid_obj = bpy.data.objects[self.grid_object] |
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obj = bpy.data.objects[self.source_object] |
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obj_me = simple_to_mesh(obj)# obj.to_mesh(bpy.context.depsgraph, apply_modifiers=True) |
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for o in bpy.context.selected_objects: o.select_set(False) |
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grid_obj.select_set(True) |
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bpy.context.view_layer.objects.active = grid_obj |
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temp_grid_obj = grid_obj.copy() |
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temp_grid_obj.data = simple_to_mesh(grid_obj) |
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grid_mesh = temp_grid_obj.data |
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for v in grid_mesh.vertices: |
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v.co = grid_obj.matrix_world @ v.co |
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grid_mesh.calc_normals() |
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if len(grid_mesh.polygons) > 64 * 64: |
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bpy.data.objects.remove(temp_grid_obj) |
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bpy.context.view_layer.objects.active = obj |
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obj.select_set(True) |
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self.report({'ERROR'}, "Maximum resolution allowed for Lattice is 64") |
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return {'CANCELLED'} |
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# CREATING LATTICE |
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min = Vector((0, 0, 0)) |
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max = Vector((0, 0, 0)) |
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first = True |
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for v in obj_me.vertices: |
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v0 = v.co.copy() |
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vert = obj.matrix_world @ v0 |
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if vert[0] < min[0] or first: |
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min[0] = vert[0] |
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if vert[1] < min[1] or first: |
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min[1] = vert[1] |
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if vert[2] < min[2] or first: |
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min[2] = vert[2] |
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if vert[0] > max[0] or first: |
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max[0] = vert[0] |
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if vert[1] > max[1] or first: |
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max[1] = vert[1] |
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if vert[2] > max[2] or first: |
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max[2] = vert[2] |
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first = False |
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bb = max - min |
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lattice_loc = (max + min) / 2 |
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bpy.ops.object.add(type='LATTICE') |
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lattice = bpy.context.active_object |
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lattice.location = lattice_loc |
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lattice.scale = Vector((bb.x / self.scale_x, bb.y / self.scale_y, |
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bb.z / self.scale_z)) |
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if bb.x == 0: |
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lattice.scale.x = 1 |
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if bb.y == 0: |
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lattice.scale.y = 1 |
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if bb.z == 0: |
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lattice.scale.z = 1 |
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bpy.context.view_layer.objects.active = obj |
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bpy.ops.object.modifier_add(type='LATTICE') |
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obj.modifiers[-1].object = lattice |
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# set as parent |
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if self.set_parent: |
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obj.select_set(True) |
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lattice.select_set(True) |
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bpy.context.view_layer.objects.active = lattice |
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bpy.ops.object.parent_set(type='LATTICE') |
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# reading grid structure |
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verts_grid, edges_grid, faces_grid = grid_from_mesh( |
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grid_mesh, |
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swap_uv=self.swapUV |
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) |
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nu = len(verts_grid) |
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nv = len(verts_grid[0]) |
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nw = 2 |
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scale_normal = self.thickness |
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try: |
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lattice.data.points_u = nu |
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lattice.data.points_v = nv |
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lattice.data.points_w = nw |
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for i in range(nu): |
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for j in range(nv): |
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for w in range(nw): |
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if self.use_groups: |
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try: |
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displace = temp_grid_obj.vertex_groups.active.weight( |
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verts_grid[i][j]) * scale_normal * bb.z |
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except: |
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displace = 0#scale_normal * bb.z |
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else: |
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displace = scale_normal * bb.z |
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target_point = (grid_mesh.vertices[verts_grid[i][j]].co + |
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grid_mesh.vertices[verts_grid[i][j]].normal * |
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(w + self.displace / 2 - 0.5) * displace) - lattice.location |
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if self.flipW: |
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w = 1 - w |
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if self.flipU: |
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i = nu - i - 1 |
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if self.flipV: |
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j = nv - j - 1 |
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|
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lattice.data.points[i + j * nu + w * nu * nv].co_deform.x = \ |
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target_point.x / bpy.data.objects[lattice.name].scale.x |
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lattice.data.points[i + j * nu + w * nu * nv].co_deform.y = \ |
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target_point.y / bpy.data.objects[lattice.name].scale.y |
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lattice.data.points[i + j * nu + w * nu * nv].co_deform.z = \ |
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target_point.z / bpy.data.objects[lattice.name].scale.z |
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|
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except: |
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bpy.ops.object.mode_set(mode='OBJECT') |
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temp_grid_obj.select_set(True) |
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lattice.select_set(True) |
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obj.select_set(False) |
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bpy.ops.object.delete(use_global=False) |
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bpy.context.view_layer.objects.active = obj |
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obj.select_set(True) |
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bpy.ops.object.modifier_remove(modifier=obj.modifiers[-1].name) |
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if nu > 64 or nv > 64: |
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self.report({'ERROR'}, "Maximum resolution allowed for Lattice is 64") |
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return {'CANCELLED'} |
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else: |
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self.report({'ERROR'}, "The grid mesh is not correct") |
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return {'CANCELLED'} |
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|
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bpy.ops.object.mode_set(mode='OBJECT') |
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#grid_obj.select_set(True) |
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#lattice.select_set(False) |
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obj.select_set(False) |
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#bpy.ops.object.delete(use_global=False) |
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bpy.context.view_layer.objects.active = lattice |
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lattice.select_set(True) |
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|
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if self.high_quality_lattice: |
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bpy.context.object.data.points_w = 8 |
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else: |
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bpy.context.object.data.use_outside = True |
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|
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if self.hide_lattice: |
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bpy.ops.object.hide_view_set(unselected=False) |
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|
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bpy.context.view_layer.objects.active = obj |
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obj.select_set(True) |
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lattice.select_set(False) |
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|
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if self.flipNormals: |
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try: |
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bpy.ops.object.mode_set(mode='EDIT') |
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bpy.ops.mesh.select_all(action='SELECT') |
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bpy.ops.mesh.flip_normals() |
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bpy.ops.object.mode_set(mode='OBJECT') |
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except: |
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pass |
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bpy.data.meshes.remove(grid_mesh) |
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bpy.data.meshes.remove(obj_me) |
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|
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return {'FINISHED'} |
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