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Commit f39ad0af authored by Sebastian Nell's avatar Sebastian Nell
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Moving UV Bake script from contrib to trunk. 

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uv_bake_texture_to_vcols.py 0 → 100644
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# ##### 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8 compliant>
"""
Bake UV-Texture to Vertex Colors Addon
Contact: p_boelens@msn.com
Information: http://projects.blender.org/tracker/index.php?func=detail&aid=28211
Contributor(s): Patrick Boelens, CoDEmanX.
All rights reserved.
"""
bl_info = {
"name": "Bake UV-Texture to Vertex Colors",
"description": "Bakes the colors of the active UV Texture to a Vertex Color layer. ",
"author": "Patrick Boelens, CoDEmanX",
"version": (0, 6),
"blender": (2, 6, 3),
"location": "3D View > Vertex Paint > Toolshelf > Bake",
"warning": "Requires image texture, generated textures aren't supported.",
"wiki_url": "http://wiki.blender.org/index.php?title=Extensions:2.6/"
"Py/Scripts/UV/Bake_Texture_to_Vertex_Colors",
"tracker_url": "http://projects.blender.org/tracker/index.php?func=detail&aid=28211",
"category": "UV"}
import bpy
from bpy.props import BoolProperty, EnumProperty, FloatVectorProperty
from math import fabs
from colorsys import rgb_to_hsv, hsv_to_rgb
class UV_OT_bake_texture_to_vcols(bpy.types.Operator):
bl_idname = "uv.bake_texture_to_vcols"
bl_label = "Bake UV-Texture to Vertex Colors"
bl_description = "Bake active UV-Texture to new Vertex Color layer (requires image texture)"
bl_options = {'REGISTER', 'UNDO'}
replace_active_layer = BoolProperty(name="Replace layer",
description="Overwrite active Vertex Color layer",
default=True)
mappingModes = [("CLIP", "Clip", "Don't affect vertices who's UV-coordinates are out of bounds."),
("REPEAT", "Repeat", "Tile the image so that each vertex is accounted for."),
("EXTEND", "Extend", "Extends the edges of the image to the UV-coordinates.")
]
mappingMode = EnumProperty(items=mappingModes,
default="CLIP",
name="Mapping",
description="The mode to use for baking vertices who's UV-coordinates are out of bounds.")
blendingModes = [("MIX", "Mix", ""),
("ADD", "Add", ""),
("SUBTRACT", "Subtract", ""),
("MULTIPLY", "Multiply", ""),
("SCREEN", "Screen", ""),
("OVERLAY", "Overlay", ""),
("DIFFERENCE", "Difference", ""),
("DIVIDE", "Divide", ""),
("DARKEN", "Darken", ""),
("LIGHTEN", "Lighten", ""),
("HUE", "Hue", ""),
("SATURATION", "Saturation", ""),
("VALUE", "Value", ""),
("COLOR", "Color", ""),
("SOFT_LIGHT", "Soft Light", ""),
("LINEAR_LIGHT", "Linear Light", "")
]
blendingMode = EnumProperty(items=blendingModes,
default="MULTIPLY",
name="Blend Type",
description="The blending mode to use when baking")
mirror_x = BoolProperty(name="Mirror X", description="Mirror the image on the X-axis.")
mirror_y = BoolProperty(name="Mirror Y", description="Mirror the image on the Y-axis.")
@classmethod
def poll(self, context):
return (context.object and
context.object.type == 'MESH' and
context.mode != 'EDIT_MESH' and
context.object.data.uv_layers.active and
context.object.data.uv_textures.active)
def execute(self, context):
obdata = context.object.data
if self.replace_active_layer and obdata.vertex_colors.active:
vertex_colors = obdata.vertex_colors.active
else:
vertex_colors = obdata.vertex_colors.new(name="Baked UV texture")
if not vertex_colors:
# Can't add more than 17 VCol layers
self.report({'ERROR'}, "Couldn't add another Vertex Color layer,\n"
"Please remove an existing layer or replace active.")
return {'CANCELLED'}
obdata.vertex_colors.active = vertex_colors
uv_images = {}
for uv_tex in obdata.uv_textures.active.data:
if uv_tex.image and uv_tex.image.name not in uv_images and uv_tex.image.pixels:
uv_images[uv_tex.image.name] = (uv_tex.image.size[0],
uv_tex.image.size[1],
uv_tex.image.pixels[:]
# Accessing pixels directly is far too slow.
# Copied to new array for massive performance-gain.
)
for p in obdata.polygons:
img = obdata.uv_textures.active.data[p.index].image
if not img:
continue
image_size_x, image_size_y, uv_pixels = uv_images[img.name]
for loop in p.loop_indices:
co = obdata.uv_layers.active.data[loop].uv
x_co = round(co[0] * (image_size_x - 1))
y_co = round(co[1] * (image_size_y - 1))
if x_co < 0 or x_co >= image_size_x or y_co < 0 or y_co >= image_size_y:
if self.mappingMode == 'CLIP':
continue
elif self.mappingMode == 'REPEAT':
x_co %= image_size_x
y_co %= image_size_y
elif self.mappingMode == 'EXTEND':
if x_co > image_size_x - 1:
x_co = image_size_x - 1
if x_co < 0:
x_co = 0
if y_co > image_size_y - 1:
y_co = image_size_y - 1
if y_co < 0:
y_co = 0
if self.mirror_x:
x_co = image_size_x -1 - x_co
if self.mirror_y:
y_co = image_size_y -1 - y_co
col_out = vertex_colors.data[loop].color
pixelNumber = (image_size_x * y_co) + x_co
r = uv_pixels[pixelNumber*4]
g = uv_pixels[pixelNumber*4 + 1]
b = uv_pixels[pixelNumber*4 + 2]
a = uv_pixels[pixelNumber*4 + 3]
col_in = r, g, b # texture-color
col_result = [r,g,b] # existing / 'base' color
if self.blendingMode == 'MIX':
col_result = col_in
elif self.blendingMode == 'ADD':
col_result[0] = col_in[0] + col_out[0]
col_result[1] = col_in[1] + col_out[1]
col_result[2] = col_in[2] + col_out[2]
elif self.blendingMode == 'SUBTRACT':
col_result[0] = col_in[0] - col_out[0]
col_result[1] = col_in[1] - col_out[1]
col_result[2] = col_in[2] - col_out[2]
elif self.blendingMode == 'MULTIPLY':
col_result[0] = col_in[0] * col_out[0]
col_result[1] = col_in[1] * col_out[1]
col_result[2] = col_in[2] * col_out[2]
elif self.blendingMode == 'SCREEN':
col_result[0] = 1 - (1.0 - col_in[0]) * (1.0 - col_out[0])
col_result[1] = 1 - (1.0 - col_in[1]) * (1.0 - col_out[1])
col_result[2] = 1 - (1.0 - col_in[2]) * (1.0 - col_out[2])
elif self.blendingMode == 'OVERLAY':
if col_out[0] < 0.5:
col_result[0] = col_out[0] * (2.0 * col_in[0])
else:
col_result[0] = 1.0 - (2.0 * (1.0 - col_in[0])) * (1.0 - col_out[0])
if col_out[1] < 0.5:
col_result[1] = col_out[1] * (2.0 * col_in[1])
else:
col_result[1] = 1.0 - (2.0 * (1.0 - col_in[1])) * (1.0 - col_out[1])
if col_out[2] < 0.5:
col_result[2] = col_out[2] * (2.0 * col_in[2])
else:
col_result[2] = 1.0 - (2.0 * (1.0 - col_in[2])) * (1.0 - col_out[2])
elif self.blendingMode == 'DIFFERENCE':
col_result[0] = fabs(col_in[0] - col_out[0])
col_result[1] = fabs(col_in[1] - col_out[1])
col_result[2] = fabs(col_in[2] - col_out[2])
elif self.blendingMode == 'DIVIDE':
if(col_in[0] != 0.0):
col_result[0] = col_out[0] / col_in[0]
if(col_in[1] != 0.0):
col_result[0] = col_out[1] / col_in[1]
if(col_in[2] != 0.0):
col_result[2] = col_out[2] / col_in[2]
elif self.blendingMode == 'DARKEN':
if col_in[0] < col_out[0]:
col_result[0] = col_in[0]
else:
col_result[0] = col_out[0]
if col_in[1] < col_out[1]:
col_result[1] = col_in[1]
else:
col_result[1] = col_out[1]
if col_in[2] < col_out[2]:
col_result[2] = col_in[2]
else:
col_result[2] = col_out[2]
elif self.blendingMode == 'LIGHTEN':
if col_in[0] > col_out[0]:
col_result[0] = col_in[0]
else:
col_result[0] = col_out[0]
if col_in[1] > col_out[1]:
col_result[1] = col_in[1]
else:
col_result[1] = col_out[1]
if col_in[2] > col_out[2]:
col_result[2] = col_in[2]
else:
col_result[2] = col_out[2]
elif self.blendingMode == 'HUE':
hsv_in = rgb_to_hsv(col_in[0], col_in[1], col_in[2])
hsv_out = rgb_to_hsv(col_out[0], col_out[1], col_out[2])
hue = hsv_in[0]
col_result = hsv_to_rgb(hue, hsv_out[1], hsv_out[2])
elif self.blendingMode == 'SATURATION':
hsv_in = rgb_to_hsv(col_in[0], col_in[1], col_in[2])
hsv_out = rgb_to_hsv(col_out[0], col_out[1], col_out[2])
sat = hsv_in[1]
col_result = hsv_to_rgb(hsv_out[0], sat, hsv_out[2])
elif self.blendingMode == 'VALUE':
hsv_in = rgb_to_hsv(col_in[0], col_in[1], col_in[2])
hsv_out = rgb_to_hsv(col_out[0], col_out[1], col_out[2])
val = hsv_in[2]
col_result = hsv_to_rgb(hsv_out[0], hsv_out[1], val)
elif self.blendingMode == 'COLOR':
hsv_in = rgb_to_hsv(col_in[0], col_in[1], col_in[2])
hsv_out = rgb_to_hsv(col_out[0], col_out[1], col_out[2])
hue = hsv_in[0]
sat = hsv_in[1]
col_result = hsv_to_rgb(hue, sat, hsv_out[2])
elif self.blendingMode == 'SOFT_LIGHT':
scr = 1 - (1.0 - col_in[0]) * (1.0 - col_out[0])
scg = 1 - (1.0 - col_in[1]) * (1.0 - col_out[1])
scb = 1 - (1.0 - col_in[2]) * (1.0 - col_out[2])
col_result[0] = (1.0 - col_out[0]) * (col_in[0] * col_out[0]) + (col_out[0] * scr)
col_result[1] = (1.0 - col_out[1]) * (col_in[1] * col_out[1]) + (col_out[1] * scg)
col_result[2] = (1.0 - col_out[2]) * (col_in[2] * col_out[2]) + (col_out[2] * scb)
elif self.blendingMode == 'LINEAR_LIGHT':
if col_in[0] > 0.5:
col_result[0] = col_out[0] + 2.0 * (col_in[0] - 0.5)
else:
col_result[0] = col_out[0] + 2.0 * (col_in[0] - 1.0)
if col_in[1] > 0.5:
col_result[1] = col_out[1] + 2.0 * (col_in[1] - 0.5)
else:
col_result[1] = col_out[1] + 2.0 * (col_in[1] - 1.0)
if col_in[2] > 0.5:
col_result[2] = col_out[2] + 2.0 * (col_in[2] - 0.5)
else:
col_result[2] = col_out[2] + 2.0 * (col_in[2] - 1.0)
# Add alpha color
a_inverted = 1 - a
alpha_color = context.scene.uv_bake_alpha_color
col_result = (col_result[0] * a + alpha_color[0] * a_inverted,
col_result[1] * a + alpha_color[1] * a_inverted,
col_result[2] * a + alpha_color[2] * a_inverted)
vertex_colors.data[loop].color = col_result
return {'FINISHED'}
class VIEW3D_PT_tools_uv_bake_texture_to_vcols(bpy.types.Panel):
bl_label = "Bake"
bl_space_type = "VIEW_3D"
bl_region_type = "TOOLS"
bl_options = {'DEFAULT_CLOSED'}
@classmethod
def poll(self, context):
return(context.mode == 'PAINT_VERTEX')
def draw(self, context):
layout = self.layout
col = layout.column()
col.prop(context.scene, "uv_bake_alpha_color")
col.separator()
col.operator("uv.bake_texture_to_vcols", text="UV Texture to VCols")
def register():
bpy.utils.register_module(__name__)
bpy.types.Scene.uv_bake_alpha_color = FloatVectorProperty(name="Alpha Color",
description="Color to be used for transparency",
subtype='COLOR',
min=0.0,
max=1.0)
def unregister():
bpy.utils.unregister_module(__name__)
del bpy.types.Scene.uv_bake_alpha_color
if __name__ == "__main__":
register()
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