4475c4211a
This script makes a new image from the used areas of all the images mapped to the selected mesh objects. Image are packed into 1 new image that is assigned to the original faces. This is usefull for game models where 1 image is faster then many, and saves the labour of manual texture layout in an image editor. - Realy needs an image example to see why this is usefull.
353 lines
10 KiB
Python
353 lines
10 KiB
Python
#!BPY
|
|
|
|
"""
|
|
Name: 'Auto Image Layout'
|
|
Blender: 241
|
|
Group: 'UV'
|
|
Tooltip: 'Pack all texture images into 1 image and remap faces.'
|
|
"""
|
|
|
|
__author__ = "Campbell Barton"
|
|
__url__ = ("blender", "blenderartists.org")
|
|
__version__ = "1.0 2005/05/20"
|
|
|
|
__bpydoc__ = """\
|
|
This script makes a new image from the used areas of all the images mapped to the selected mesh objects.
|
|
Image are packed into 1 new image that is assigned to the original faces.
|
|
This is usefull for game models where 1 image is faster then many, and saves the labour of manual texture layout in an image editor.
|
|
|
|
"""
|
|
# --------------------------------------------------------------------------
|
|
# Auto Texture Layout v1.0 by Campbell Barton (AKA Ideasman)
|
|
# --------------------------------------------------------------------------
|
|
# ***** BEGIN GPL LICENSE BLOCK *****
|
|
#
|
|
# This program is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License
|
|
# as published by the Free Software Foundation; either version 2
|
|
# of the License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software Foundation,
|
|
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
#
|
|
# ***** END GPL LICENCE BLOCK *****
|
|
# --------------------------------------------------------------------------
|
|
|
|
|
|
# Function to find all the images we use
|
|
import Blender as B
|
|
import boxpack2d
|
|
from Blender.Mathutils import Vector
|
|
from Blender.Scene import Render
|
|
|
|
BIGNUM= 1<<30
|
|
class faceGroup(object):
|
|
__slots__= 'xmax', 'ymax', 'xmin', 'ymin',\
|
|
'image', 'faces', 'box_pack', 'size'\
|
|
|
|
def __init__(self, mesh_list, image, size, PREF_IMAGE_MARGIN):
|
|
self.image= image
|
|
self.size= size
|
|
# Add to our face group and set bounds.
|
|
xmin=ymin= BIGNUM
|
|
xmax=ymax= -BIGNUM
|
|
self.faces= []
|
|
for me in mesh_list:
|
|
for f in me.faces:
|
|
if f.image==image:
|
|
self.faces.append(f)
|
|
for uv in f.uv:
|
|
xmax= max(xmax, uv.x)
|
|
xmin= min(xmin, uv.x)
|
|
ymax= max(ymax, uv.y)
|
|
ymin= min(ymin, uv.y)
|
|
|
|
# The box pack list is to be passed to the external function "boxpack2d"
|
|
# format is ID, w,h
|
|
|
|
# Store the bounds, impliment the margin.
|
|
self.xmax= xmax + (PREF_IMAGE_MARGIN/size[0])
|
|
self.xmin= xmin - (PREF_IMAGE_MARGIN/size[0])
|
|
self.ymax= ymax + (PREF_IMAGE_MARGIN/size[1])
|
|
self.ymin= ymin - (PREF_IMAGE_MARGIN/size[1])
|
|
|
|
self.box_pack=[\
|
|
image.name,\
|
|
size[0]*(self.xmax - self.xmin),\
|
|
size[1]*(self.ymax - self.ymin)]
|
|
|
|
|
|
'''
|
|
# default.
|
|
self.scale= 1.0
|
|
|
|
def set_worldspace_scale(self):
|
|
scale_uv= 0.0
|
|
scale_3d= 0.0
|
|
for f in self.faces:
|
|
for i in xrange(len(f.v)):
|
|
scale_uv+= (f.uv[i]-f.uv[i-1]).length * 0.1
|
|
scale_3d+= (f.v[i].co-f.v[i-1].co).length * 0.1
|
|
self.scale= scale_3d/scale_uv
|
|
'''
|
|
|
|
|
|
|
|
def move2packed(self, width, height):
|
|
'''
|
|
Moves the UV coords to their packed location
|
|
using self.box_pack as the offset, scaler.
|
|
box_pack must be set to its packed location.
|
|
width and weight are the w/h of the overall packed area's bounds.
|
|
'''
|
|
# packedLs is a list of [(anyUniqueID, left, bottom, width, height)...]
|
|
# Width and height in float pixel space.
|
|
|
|
# X Is flipped :/
|
|
#offset_x= (1-(self.box_pack[1]/d)) - (((self.xmax-self.xmin) * self.image.size[0])/d)
|
|
offset_x= self.box_pack[1]/width
|
|
offset_y= self.box_pack[2]/height
|
|
|
|
for f in self.faces:
|
|
for uv in f.uv:
|
|
uv.x= offset_x+ (((uv.x-self.xmin) * self.size[0])/width)
|
|
uv.y= offset_y+ (((uv.y-self.ymin) * self.size[1])/height)
|
|
|
|
def auto_layout_tex(mesh_list, scn, PREF_IMAGE_PATH, PREF_IMAGE_SIZE, PREF_KEEP_ASPECT, PREF_IMAGE_MARGIN): #, PREF_SIZE_FROM_UV=True):
|
|
|
|
# Get all images used by the mesh
|
|
face_groups= {}
|
|
|
|
for me in mesh_list:
|
|
for f in me.faces:
|
|
if f.image:
|
|
try:
|
|
face_groups[f.image.name] # will fail if teh groups not added.
|
|
except:
|
|
image= f.image
|
|
try:
|
|
size= image.size
|
|
except:
|
|
B.Draw.PupMenu('Aborting: Image cold not be loaded|' + image.name)
|
|
return
|
|
|
|
face_groups[f.image.name]= faceGroup(mesh_list, f.image, size, PREF_IMAGE_MARGIN)
|
|
|
|
if not face_groups:
|
|
B.Draw.PupMenu('No Images found in mesh. aborting.')
|
|
return
|
|
|
|
if len(face_groups)==1:
|
|
B.Draw.PupMenu('Only 1 image found|use meshes using 2 or more images.')
|
|
return
|
|
|
|
'''
|
|
if PREF_SIZE_FROM_UV:
|
|
for fg in face_groups.itervalues():
|
|
fg.set_worldspace_scale()
|
|
'''
|
|
|
|
# RENDER THE FACES.
|
|
render_scn= B.Scene.New()
|
|
render_scn.makeCurrent()
|
|
|
|
|
|
# Set the render context
|
|
render_context= render_scn.getRenderingContext()
|
|
render_context.currentFrame(1)
|
|
PREF_IMAGE_PATH_EXPAND= B.sys.expandpath(PREF_IMAGE_PATH + '#') + '.png'
|
|
|
|
# TEST THE FILE WRITING.
|
|
try:
|
|
# Can we write to this file???
|
|
f= open(PREF_IMAGE_PATH_EXPAND, 'w')
|
|
f.write('\n')
|
|
f.close()
|
|
except:
|
|
B.Draw.PupMenu('Error: Could not write to path|' + PREF_IMAGE_PATH_EXPAND)
|
|
scn.makeCurrent()
|
|
B.Scene.Unlink(render_scn)
|
|
return
|
|
|
|
render_context.setRenderPath(PREF_IMAGE_PATH)
|
|
|
|
render_context.imageSizeX(PREF_IMAGE_SIZE)
|
|
render_context.imageSizeY(PREF_IMAGE_SIZE)
|
|
render_context.startFrame(1)
|
|
render_context.endFrame(1)
|
|
render_context.enableOversampling(True)
|
|
render_context.setOversamplingLevel(16)
|
|
render_context.setRenderWinSize(100)
|
|
render_context.setImageType(Render.PNG)
|
|
render_context.enableExtensions(True)
|
|
render_context.enableSky() # No alpha needed.
|
|
render_context.enableRGBColor()
|
|
|
|
Render.EnableDispView() # Broken??
|
|
|
|
# New Mesh and Object
|
|
render_mat= B.Material.New()
|
|
render_mat.mode |= B.Material.Modes.SHADELESS
|
|
render_mat.mode |= B.Material.Modes.TEXFACE
|
|
|
|
|
|
render_me= B.Mesh.New()
|
|
render_me.verts.extend([Vector(0,0,0)]) # Stupid, dummy vert, preverts errors.
|
|
render_ob= B.Object.New('Mesh')
|
|
render_ob.link(render_me)
|
|
render_scn.link(render_ob)
|
|
render_me.materials= [render_mat]
|
|
|
|
|
|
# New camera and object
|
|
render_cam_data= B.Camera.New('ortho')
|
|
render_cam_ob= B.Object.New('Camera')
|
|
render_cam_ob.link(render_cam_data)
|
|
render_scn.link(render_cam_ob)
|
|
render_scn.setCurrentCamera(render_cam_ob)
|
|
|
|
render_cam_data.type= 1 # ortho
|
|
render_cam_data.scale= 1.0
|
|
|
|
|
|
# Position the camera
|
|
render_cam_ob.LocZ= 1.0 # set back 1
|
|
render_cam_ob.LocX= 0.5 # set back 1
|
|
render_cam_ob.LocY= 0.5 # set back 1
|
|
#render_cam_ob.RotY= 180 * 0.017453292519943295 # pi/180.0
|
|
|
|
# List to send to to boxpack function.
|
|
boxes2Pack= [ fg.box_pack for fg in face_groups.itervalues()]
|
|
|
|
packWidth, packHeight, packedLs = boxpack2d.boxPackIter(boxes2Pack)
|
|
|
|
if PREF_KEEP_ASPECT:
|
|
packWidth= packHeight= max(packWidth, packHeight)
|
|
|
|
|
|
# packedLs is a list of [(anyUniqueID, left, bottom, width, height)...]
|
|
# Re assign the face groups boxes to the face_group.
|
|
for box in packedLs:
|
|
face_groups[ box[0] ].box_pack= box # box[0] is the ID (image name)
|
|
|
|
|
|
# Add geometry to the mesh
|
|
for fg in face_groups.itervalues():
|
|
# Add verts clockwise from the bottom left.
|
|
_x= fg.box_pack[1] / packWidth
|
|
_y= fg.box_pack[2] / packHeight
|
|
_w= fg.box_pack[3] / packWidth
|
|
_h= fg.box_pack[4] / packHeight
|
|
|
|
render_me.verts.extend([\
|
|
Vector(_x, _y, 0),\
|
|
Vector(_x, _y +_h, 0),\
|
|
Vector(_x + _w, _y +_h, 0),\
|
|
Vector(_x + _w, _y, 0),\
|
|
])
|
|
|
|
render_me.faces.extend([\
|
|
render_me.verts[-1],\
|
|
render_me.verts[-2],\
|
|
render_me.verts[-3],\
|
|
render_me.verts[-4],\
|
|
])
|
|
|
|
target_face= render_me.faces[-1]
|
|
target_face.image= fg.image
|
|
target_face.mode |= B.Mesh.FaceModes.TEX
|
|
|
|
# Set the UV's, we need to flip them HOZ?
|
|
target_face.uv[0].x= target_face.uv[1].x= fg.xmax
|
|
target_face.uv[2].x= target_face.uv[3].x= fg.xmin
|
|
|
|
target_face.uv[0].y= target_face.uv[3].y= fg.ymin
|
|
target_face.uv[1].y= target_face.uv[2].y= fg.ymax
|
|
|
|
# VCOLS
|
|
# Set them white.
|
|
for c in target_face.col:
|
|
c.r= c.g= c.b= 255
|
|
|
|
#render_context.render()
|
|
#render_context.saveRenderedImage('/test.png') # BROKEN.
|
|
render_context.renderAnim()
|
|
|
|
#if not B.sys.exists(PREF_IMAGE_PATH):
|
|
# raise 'Error!!!'
|
|
Render.CloseRenderWindow()
|
|
|
|
# NOW APPLY THE SAVED IMAGE TO THE FACES!
|
|
print PREF_IMAGE_PATH_EXPAND
|
|
target_image= B.Image.Load(PREF_IMAGE_PATH_EXPAND)
|
|
|
|
# Set to the 1 image.
|
|
for me in mesh_list:
|
|
for f in me.faces:
|
|
if f.image:
|
|
f.image= target_image
|
|
|
|
for fg in face_groups.itervalues():
|
|
fg.move2packed(packWidth, packHeight)
|
|
|
|
scn.makeCurrent()
|
|
B.Scene.Unlink(render_scn)
|
|
|
|
|
|
def main():
|
|
scn= B.Scene.GetCurrent()
|
|
ob= scn.getActiveObject()
|
|
|
|
if not ob or ob.getType() != 'Mesh':
|
|
B.Draw.PupMenu('Error, no active mesh object, aborting.')
|
|
return
|
|
|
|
# Create the variables.
|
|
# Filename without path or extension.
|
|
newpath= B.Get('filename').split('/')[-1].split('\\')[-1].replace('.blend', '')
|
|
|
|
PREF_IMAGE_PATH = B.Draw.Create('//%s_grp' % newpath)
|
|
PREF_IMAGE_SIZE = B.Draw.Create(512)
|
|
PREF_IMAGE_MARGIN = B.Draw.Create(6)
|
|
PREF_KEEP_ASPECT = B.Draw.Create(1)
|
|
PREF_ALL_SEL_OBS = B.Draw.Create(0)
|
|
|
|
pup_block = [\
|
|
'image path: no ext',\
|
|
('', PREF_IMAGE_PATH, 3, 100, 'Path to new Image. "//" for curent blend dir.'),\
|
|
'Image Options',
|
|
('Pixel Size:', PREF_IMAGE_SIZE, 64, 4096, 'Image Width and Height.'),\
|
|
('Pixel Margin:', PREF_IMAGE_MARGIN, 0, 64, 'Image Width and Height.'),\
|
|
('Keep Image Aspect', PREF_KEEP_ASPECT, 'If disabled, will stretch the images to the bounds of the texture'),\
|
|
'Texture Source',\
|
|
('All Sel Objects', PREF_ALL_SEL_OBS, 'Combine and replace textures from all objects into 1 texture.'),\
|
|
]
|
|
|
|
if not B.Draw.PupBlock('Auto Texture Layout', pup_block):
|
|
return
|
|
|
|
PREF_IMAGE_PATH= PREF_IMAGE_PATH.val
|
|
PREF_IMAGE_SIZE= PREF_IMAGE_SIZE.val
|
|
PREF_IMAGE_MARGIN= PREF_IMAGE_MARGIN.val
|
|
PREF_KEEP_ASPECT= PREF_KEEP_ASPECT.val
|
|
PREF_ALL_SEL_OBS= PREF_ALL_SEL_OBS.val
|
|
|
|
if PREF_ALL_SEL_OBS:
|
|
mesh_list= [ob.getData(mesh=1) for ob in B.Object.GetSelected() if ob.getType()=='Mesh']
|
|
# Make sure we have no doubles- dict by name, then get the values back.
|
|
mesh_list= dict([(me.name, me) for me in mesh_list])
|
|
mesh_list= mesh_list.values()
|
|
else:
|
|
mesh_list= [ob.getData(mesh=1)]
|
|
|
|
auto_layout_tex(mesh_list, scn, PREF_IMAGE_PATH, PREF_IMAGE_SIZE, PREF_KEEP_ASPECT, PREF_IMAGE_MARGIN)
|
|
|
|
if __name__=='__main__':
|
|
main()
|