610 lines
20 KiB
Python
610 lines
20 KiB
Python
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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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bl_info = {
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"name": "PBR Painter",
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"author": "Lubos Lenco",
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"version": (1, 0, 2),
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"blender": (2, 77, 0),
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"location": "View3D > Tools > PBR",
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"description": "Multi-texture painting",
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"category": "Paint",
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}
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import math
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import os
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import bpy
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from bpy.props import *
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# Set occlusion to white
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# Set strength to 1, set texture size to 0.2
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# Set environmnent texture
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# Paint to separate slots with pbr brush disabled
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# Do not forget to save all texture slots at exit
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def material_update(self, context):
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scene = context.scene
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if scene.material_prop != '':
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for i in range(0, 5):
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update_texture_index(context, i)
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# Set brush textures
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scene.brushindex1_prop = -1
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scene.brushindex2_prop = -1
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scene.brushindex3_prop = -1
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scene.brushindex4_prop = -1
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scene.brushindex5_prop = -1
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imageindices = [
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scene.imageindex1_prop,
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scene.imageindex2_prop,
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scene.imageindex3_prop,
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scene.imageindex4_prop,
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scene.imageindex5_prop]
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i = 0
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for ii in imageindices:
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if ii != -1:
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brush_name = 'brush_' + str(i + 1)
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texture = bpy.data.textures[brush_name]
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texture.image = bpy.data.images[ii]
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j = 0
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for brush in bpy.data.textures:
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if brush.name == brush_name:
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if i == 0:
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scene.brushindex1_prop = j
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elif i == 1:
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scene.brushindex2_prop = j
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elif i == 2:
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scene.brushindex3_prop = j
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elif i == 3:
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scene.brushindex4_prop = j
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elif i == 4:
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scene.brushindex5_prop = j
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break
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j += 1
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i += 1
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def find_node_by_link(node_group, to_node, inp):
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for link in node_group.links:
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if link.to_node == to_node and link.to_socket == inp:
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return link.from_node
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def get_image_name(node_group, node, inp_index):
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if node.inputs[inp_index].is_linked:
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image_node = find_node_by_link(
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node_group, node, node.inputs[inp_index])
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if image_node.type == 'TEX_IMAGE':
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return image_node.image.name
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def update_texture_index(context, input_index):
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scene = context.scene
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mat = bpy.data.materials[scene.material_prop]
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for n in mat.node_tree.nodes:
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if n.type == 'GROUP' and n.node_tree.name.split('.', 1)[0] == 'PBR':
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node = n
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break
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image_name = get_image_name(mat.node_tree, node, input_index)
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i = 0
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image_index = -1
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for image in bpy.data.images:
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if image_name == image.name:
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image_index = i
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break
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i += 1
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if image_index == -1:
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return
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# Get PBR material node
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obj = context.image_paint_object
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mat = obj.active_material
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for n in mat.node_tree.nodes:
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if n.type == 'GROUP' and n.node_tree.name == 'PBR':
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node = n
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break
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image_name = get_image_name(mat.node_tree, node, input_index)
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# Save image index to correct slot
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i = 0
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for slot in mat.texture_paint_images:
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slot_name = slot.name
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if slot_name == image_name:
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if i == 0:
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scene.imageindex1_prop = image_index
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elif i == 1:
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scene.imageindex2_prop = image_index
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elif i == 2:
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scene.imageindex3_prop = image_index
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elif i == 3:
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scene.imageindex4_prop = image_index
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elif i == 4:
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scene.imageindex5_prop = image_index
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break
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i += 1
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def get_override():
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for window in bpy.context.window_manager.windows:
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screen = window.screen
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for area in screen.areas:
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if area.type == 'VIEW_3D':
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for region in area.regions:
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if region.type == 'WINDOW':
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override = {
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'window': window,
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'screen': screen,
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'area': area,
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'region': region}
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return override
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def brushtoggle_update(self, context):
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if context.scene['PPBrush'] == 1:
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material_update(self, context)
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override = get_override()
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bpy.ops.pp.brush_operator(override, 'INVOKE_DEFAULT')
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def init_scene_properties():
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bpy.types.Scene.PPBrush = BoolProperty(
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name="PBR Brush", description="Enable multi-texture painting",
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update=brushtoggle_update)
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bpy.types.Scene.material_prop = bpy.props.StringProperty(
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name="Material", description="PBR Material",
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update=material_update, default="")
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bpy.types.Scene.imageindex1_prop = bpy.props.IntProperty(
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name="Texture Index 1", description="Texture index",
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default=-1)
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bpy.types.Scene.imageindex2_prop = bpy.props.IntProperty(
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name="Texture Index 2", description="Texture index",
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default=-1)
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bpy.types.Scene.imageindex3_prop = bpy.props.IntProperty(
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name="Texture Index 3", description="Texture index",
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default=-1)
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bpy.types.Scene.imageindex4_prop = bpy.props.IntProperty(
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name="Texture Index 4", description="Texture index",
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default=-1)
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bpy.types.Scene.imageindex5_prop = bpy.props.IntProperty(
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name="Texture Index 5", description="Texture index",
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default=-1)
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bpy.types.Scene.brushindex1_prop = bpy.props.IntProperty(
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name="Brush Index 1", description="Brush index",
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default=-1)
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bpy.types.Scene.brushindex2_prop = bpy.props.IntProperty(
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name="Brush Index 2", description="Brush index",
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default=-1)
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bpy.types.Scene.brushindex3_prop = bpy.props.IntProperty(
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name="Brush Index 3", description="Brush index",
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default=-1)
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bpy.types.Scene.brushindex4_prop = bpy.props.IntProperty(
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name="Brush Index 4", description="Brush index",
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default=-1)
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bpy.types.Scene.brushindex5_prop = bpy.props.IntProperty(
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name="Brush Index 5", description="Brush index",
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default=-1)
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bpy.types.Scene.PPTextureWidth = IntProperty(
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name="Width", description="Texture Width",
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default=1024)
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bpy.types.Scene.PPTextureHeight = IntProperty(
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name="Height", description="Texture Height",
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default=1024)
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def paint_strokes(strokes):
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bpy.ops.paint.image_paint(stroke=strokes)
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def paint(mouse_path):
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ts = bpy.context.tool_settings
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bradius = ts.unified_paint_settings.size * 2
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bstrength = ts.image_paint.brush.strength
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strokes = []
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i = 0
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for x, y in mouse_path:
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strokes.append({
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'name': '',
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'location': (0, 0, 0),
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'mouse': (x, y),
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'size': bradius,
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'pen_flip': False,
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'is_start': False,
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'pressure': bstrength,
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'time': i})
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i += 1
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scene = bpy.context.scene
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obj = bpy.context.image_paint_object
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slot = obj.active_material.paint_active_slot
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brush = bpy.context.tool_settings.image_paint.brush
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i = scene.brushindex1_prop
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if i != -1:
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brush.texture = bpy.data.textures[i]
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obj.active_material.paint_active_slot = 0
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paint_strokes(strokes)
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i = scene.brushindex2_prop
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if i != -1:
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brush.texture = bpy.data.textures[i]
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obj.active_material.paint_active_slot = 1
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paint_strokes(strokes)
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i = scene.brushindex3_prop
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if i != -1:
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brush.texture = bpy.data.textures[i]
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obj.active_material.paint_active_slot = 2
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paint_strokes(strokes)
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i = scene.brushindex4_prop
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if i != -1:
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brush.texture = bpy.data.textures[i]
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obj.active_material.paint_active_slot = 3
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paint_strokes(strokes)
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i = scene.brushindex5_prop
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if i != -1:
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brush.texture = bpy.data.textures[i]
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obj.active_material.paint_active_slot = 4
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paint_strokes(strokes)
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obj.active_material.paint_active_slot = slot
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class ModalPPBrushOperator(bpy.types.Operator):
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"""Draw a line with the mouse"""
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bl_idname = "pp.brush_operator"
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bl_label = "PBR Brush"
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bl_options = {"INTERNAL"}
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def modal(self, context, event):
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if bpy.context.image_paint_object is None:
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return {'PASS_THROUGH'}
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if event.type == 'MOUSEMOVE':
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if self.mouse_down:
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# Make points more dense if necessary
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if len(self.last_mouse_path) > 0:
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lx = self.last_mouse_path[-1][0]
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ly = self.last_mouse_path[-1][1]
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dx = event.mouse_region_x - lx
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dy = event.mouse_region_y - ly
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dist = math.sqrt(dx * dx + dy * dy)
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if dist > 16:
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stepx = (dx / dist) * 16
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stepy = (dy / dist) * 16
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for i in range(1, int(dist / 16)):
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self.mouse_path.append(
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(int(lx + stepx * i), int(ly + stepy * i)))
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self.mouse_path.append(
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(event.mouse_region_x, event.mouse_region_y))
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paint(self.mouse_path)
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self.last_mouse_path = self.mouse_path
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self.mouse_path = []
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return {'RUNNING_MODAL'}
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elif context.scene['PPBrush'] == 0:
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return {'FINISHED'}
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elif event.type == 'LEFTMOUSE':
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mx = event.mouse_region_x
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my = event.mouse_region_y
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prefs = bpy.context.user_preferences
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use_region_overlap = prefs.system.use_region_overlap
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view_area = False
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for area in bpy.context.screen.areas:
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if area.type == 'VIEW_3D':
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view_area = True
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r = area.regions[4]
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if use_region_overlap:
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tools_r = area.regions[1]
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if mx < tools_r.width + 30 or my < 0 or mx > (r.width - tools_r.width - 30) or my > r.height:
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return {'PASS_THROUGH'}
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else: # mx is negative when in tools panel
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if mx < 30 or my < 0 or mx > r.width - 30 or my > r.height:
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return {'PASS_THROUGH'}
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if view_area is False:
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return {'PASS_THROUGH'}
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brush = bpy.context.tool_settings.image_paint.brush
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if brush.image_tool != 'DRAW':
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return {'PASS_THROUGH'}
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if context.scene.material_prop == '':
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return {'PASS_THROUGH'}
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if event.value == 'PRESS':
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self.mouse_path.append(
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(event.mouse_region_x, event.mouse_region_y))
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paint(self.mouse_path)
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self.last_mouse_path = self.mouse_path
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self.mouse_path = []
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self.mouse_down = True
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args = (self, context)
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# Disable undo
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prefs = bpy.context.user_preferences
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self.use_global_undo = prefs.edit.use_global_undo
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self.undo_steps = prefs.edit.undo_steps
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prefs.edit.undo_steps = 0
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prefs.edit.use_global_undo = False
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elif event.value == 'RELEASE':
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# Clear
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self.last_mouse_path = []
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self.mouse_path = []
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self.mouse_down = False
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# Restore undo
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prefs = bpy.context.user_preferences
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prefs.edit.undo_steps = self.undo_steps
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prefs.edit.use_global_undo = self.use_global_undo
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return {'RUNNING_MODAL'}
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return {'PASS_THROUGH'}
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def invoke(self, context, event):
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if context.area.type == 'VIEW_3D':
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self.last_mouse_path = []
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self.mouse_path = []
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self.mouse_down = False
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self.use_global_undo = 0
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self.undo_steps = 0
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context.window_manager.modal_handler_add(self)
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return {'RUNNING_MODAL'}
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else:
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return {'CANCELLED'}
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def get_override_smart_project(obj):
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for area in bpy.context.screen.areas:
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if area.type == 'VIEW_3D':
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for region in area.regions:
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if region.type == 'WINDOW':
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override = {
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'window': bpy.context.window,
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'scene': bpy.context.scene,
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'screen': bpy.context.screen,
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'blend_data': bpy.context.blend_data,
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'active_object': bpy.context.active_object,
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'selected_editable_objects':
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bpy.context.selected_editable_objects,
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'area': area,
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'region': region,
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'edit_object': obj}
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return override
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class PPSetupButton(bpy.types.Operator):
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bl_idname = "pp.setup"
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bl_label = "Setup"
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def execute(self, context):
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# Switch to cycles
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for scene in bpy.data.scenes:
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scene.render.engine = 'CYCLES'
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# Create textures
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w = context.scene.PPTextureWidth
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h = context.scene.PPTextureHeight
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obj = context.image_paint_object
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basecolor_image = bpy.data.images.new(
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obj.name + "_basecolor", width=w, height=h)
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basecolor_image.pack(as_png=True)
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occlusion_image = bpy.data.images.new(
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obj.name + "_occlusion", width=w, height=h)
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occlusion_image.pack(as_png=True)
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roughness_image = bpy.data.images.new(
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obj.name + "_roughness", width=w, height=h)
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roughness_image.pack(as_png=True)
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metalness_image = bpy.data.images.new(
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obj.name + "_metalness", width=w, height=h)
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metalness_image.pack(as_png=True)
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normal_image = bpy.data.images.new(
|
||
|
obj.name + "_normal", width=w, height=h)
|
||
|
normal_image.pack(as_png=True)
|
||
|
|
||
|
# Unwrap if needed
|
||
|
if len(obj.data.uv_layers) == 0:
|
||
|
override = get_override_smart_project(obj)
|
||
|
bpy.ops.uv.smart_project(override)
|
||
|
|
||
|
# Import pbr nodes
|
||
|
import_node_groups()
|
||
|
|
||
|
# Create material if needed
|
||
|
if obj.name+'_pbr' not in bpy.data.materials:
|
||
|
mat = bpy.data.materials.new(name=obj.name+'_pbr')
|
||
|
mat.use_nodes = True
|
||
|
else:
|
||
|
mat = bpy.data.materials[obj.name+'_pbr']
|
||
|
|
||
|
if len(obj.data.materials) > 0:
|
||
|
obj.data.materials[0] = mat
|
||
|
else:
|
||
|
obj.data.materials.append(mat)
|
||
|
|
||
|
# Setup material
|
||
|
mat = obj.active_material
|
||
|
nodes = mat.node_tree.nodes
|
||
|
links = mat.node_tree.links
|
||
|
for n in nodes:
|
||
|
nodes.remove(n)
|
||
|
|
||
|
out_node = nodes.new('ShaderNodeOutputMaterial')
|
||
|
out_node.location = 0, 0
|
||
|
|
||
|
group_node = nodes.new("ShaderNodeGroup")
|
||
|
group_node.location = -250, 0
|
||
|
group_node.node_tree = bpy.data.node_groups['PBR']
|
||
|
links.new(group_node.outputs[0], out_node.inputs[0])
|
||
|
links.new(group_node.outputs[1], out_node.inputs[2])
|
||
|
|
||
|
# Connect textures
|
||
|
basecolor_node = nodes.new('ShaderNodeTexImage')
|
||
|
basecolor_node.location = -1300, 0
|
||
|
basecolor_node.image = basecolor_image
|
||
|
links.new(basecolor_node.outputs[0], group_node.inputs[0])
|
||
|
|
||
|
occlusion_node = nodes.new('ShaderNodeTexImage')
|
||
|
occlusion_node.location = -1100, -200
|
||
|
occlusion_node.image = occlusion_image
|
||
|
links.new(occlusion_node.outputs[0], group_node.inputs[1])
|
||
|
|
||
|
roughness_node = nodes.new('ShaderNodeTexImage')
|
||
|
roughness_node.location = -900, -400
|
||
|
roughness_node.image = roughness_image
|
||
|
roughness_node.color_space = 'NONE'
|
||
|
links.new(roughness_node.outputs[0], group_node.inputs[2])
|
||
|
|
||
|
metalness_node = nodes.new('ShaderNodeTexImage')
|
||
|
metalness_node.location = -700, -600
|
||
|
metalness_node.image = metalness_image
|
||
|
metalness_node.color_space = 'NONE'
|
||
|
links.new(metalness_node.outputs[0], group_node.inputs[3])
|
||
|
|
||
|
normal_node = nodes.new('ShaderNodeTexImage')
|
||
|
normal_node.location = -500, -800
|
||
|
normal_node.image = normal_image
|
||
|
links.new(normal_node.outputs[0], group_node.inputs[4])
|
||
|
|
||
|
# Create brush texture
|
||
|
for i in range(1, 6):
|
||
|
brush = bpy.data.textures.new('brush_' + str(i), 'IMAGE')
|
||
|
brush.use_fake_user = True
|
||
|
|
||
|
return{'FINISHED'}
|
||
|
|
||
|
|
||
|
def import_node_groups():
|
||
|
if bpy.data.node_groups.get('PBR') is None:
|
||
|
data_path = \
|
||
|
os.path.dirname(os.path.abspath(__file__)) + '/data.blend'
|
||
|
|
||
|
with bpy.data.libraries.load(data_path, link=False) as \
|
||
|
(data_from, data_to):
|
||
|
data_to.node_groups = ['PBR']
|
||
|
|
||
|
|
||
|
class PPImportNodeGroupsButton(bpy.types.Operator):
|
||
|
bl_idname = "pp.import_node_groups"
|
||
|
bl_label = "Import Node Groups"
|
||
|
|
||
|
def execute(self, context):
|
||
|
import_node_groups()
|
||
|
return{'FINISHED'}
|
||
|
|
||
|
|
||
|
class PPSetEnvironmentButton(bpy.types.Operator):
|
||
|
bl_idname = "pp.set_environment"
|
||
|
bl_label = "Set Environment"
|
||
|
|
||
|
def execute(self, context):
|
||
|
world = bpy.context.scene.world
|
||
|
world.use_nodes = True
|
||
|
nodes = world.node_tree.nodes
|
||
|
links = world.node_tree.links
|
||
|
for n in nodes:
|
||
|
nodes.remove(n)
|
||
|
|
||
|
out_node = nodes.new('ShaderNodeOutputWorld')
|
||
|
out_node.location = 0, 0
|
||
|
|
||
|
background_node = nodes.new('ShaderNodeBackground')
|
||
|
background_node.location = -250, 0
|
||
|
links.new(background_node.outputs[0], out_node.inputs[0])
|
||
|
|
||
|
sky_node = nodes.new('ShaderNodeTexSky')
|
||
|
sky_node.location = -500, 0
|
||
|
sky_node.sky_type = 'PREETHAM'
|
||
|
sky_node.turbidity = 3.0
|
||
|
links.new(sky_node.outputs[0], background_node.inputs[0])
|
||
|
return{'FINISHED'}
|
||
|
|
||
|
|
||
|
class PPExportTexturesButton(bpy.types.Operator):
|
||
|
bl_idname = "pp.export_textures"
|
||
|
bl_label = "Export Textures"
|
||
|
|
||
|
def execute(self, context):
|
||
|
return{'FINISHED'}
|
||
|
|
||
|
|
||
|
class PPExportSketchFabButton(bpy.types.Operator):
|
||
|
bl_idname = "pp.export_webgl"
|
||
|
bl_label = "Export to SketchFab"
|
||
|
|
||
|
def execute(self, context):
|
||
|
return{'FINISHED'}
|
||
|
|
||
|
|
||
|
class VIEW3D_PT_tools_imagepaint_pbr(bpy.types.Panel):
|
||
|
bl_space_type = 'VIEW_3D'
|
||
|
bl_region_type = 'TOOLS'
|
||
|
bl_context = "imagepaint"
|
||
|
bl_label = "PBR Painter"
|
||
|
|
||
|
def draw(self, context):
|
||
|
layout = self.layout
|
||
|
scene = context.scene
|
||
|
|
||
|
layout.label('Textures')
|
||
|
row = layout.row()
|
||
|
row.prop(scene, 'PPTextureWidth')
|
||
|
row.prop(scene, 'PPTextureHeight')
|
||
|
layout.operator("pp.setup")
|
||
|
|
||
|
layout.prop(scene, 'PPBrush')
|
||
|
if 'PPBrush' in scene and scene['PPBrush']:
|
||
|
layout.prop_search(
|
||
|
scene, "material_prop", bpy.data,
|
||
|
"materials", "Material")
|
||
|
|
||
|
layout.label('Utils')
|
||
|
box = layout.box()
|
||
|
box.operator("pp.import_node_groups")
|
||
|
box.operator("pp.set_environment")
|
||
|
|
||
|
#layout.label('Export')
|
||
|
#layout.operator("pp.export_textures")
|
||
|
#layout.operator("pp.export_webgl")
|
||
|
|
||
|
|
||
|
def register():
|
||
|
bpy.utils.register_module(__name__)
|
||
|
init_scene_properties()
|
||
|
|
||
|
|
||
|
def unregister():
|
||
|
bpy.utils.unregister_module(__name__)
|
||
|
|
||
|
|
||
|
if __name__ == "__main__":
|
||
|
register()
|