scene_amaranth_toolset.py

# ##### 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 #####

bl_info = {
    "name": "Amaranth Toolset",
    "author": "Pablo Vazquez, Bassam Kurdali, Sergey Sharybin",
    "version": (0, 8, 8),
    "blender": (2, 70),
    "location": "Everywhere!",
    "description": "A collection of tools and settings to improve productivity",
    "warning": "",
    "wiki_url": "http://pablovazquez.org/amaranth",
    "tracker_url": "",
    "category": "Scene"}


import bpy
import bmesh
from bpy.types import Operator, AddonPreferences, Panel, Menu
from bpy.props import (BoolProperty, EnumProperty,
                       FloatProperty, IntProperty,
                       StringProperty)
from mathutils import Vector
from bpy.app.handlers import persistent
from bl_operators.presets import AddPresetBase

# Preferences
class AmaranthToolsetPreferences(AddonPreferences):
    bl_idname = __name__
    use_frame_current = BoolProperty(
            name="Current Frame Slider",
            description="Set the current frame from the Specials menu in the 3D View",
            default=True,
            )
    use_file_save_reload = BoolProperty(
            name="Save & Reload File",
            description="File menu > Save & Reload, or Ctrl + Shift + W",
            default=True,
            )

    use_scene_refresh = BoolProperty(
            name="Refresh Scene",
            description="Specials Menu [W], or hit F5",
            default=True,
            )
    use_timeline_extra_info = BoolProperty(
            name="Timeline Extra Info",
            description="Timeline Header",
            default=True,
            )
    use_image_node_display = BoolProperty(
            name="Active Image Node in Editor",
            description="Display active node image in image editor",
            default=True,
            )
    use_scene_stats = BoolProperty(
            name="Extra Scene Statistics",
            description="Display extra scene statistics in Info editor's header",
            default=True,
            )


    def draw(self, context):
        layout = self.layout

        layout.label(
            text="Here you can enable or disable specific tools, "
                 "in case they interfere with others or are just plain annoying")

        split = layout.split(percentage=0.25)

        col = split.column()
        sub = col.column(align=True)
        sub.label(text="3D View", icon="VIEW3D")
        sub.prop(self, "use_frame_current")
        sub.prop(self, "use_scene_refresh")

        sub.separator()

        sub.label(text="General", icon="SCENE_DATA")
        sub.prop(self, "use_file_save_reload")
        sub.prop(self, "use_timeline_extra_info")
        sub.prop(self, "use_scene_stats")

        sub.separator()

        sub.label(text="Nodes Editor", icon="NODETREE")
        sub.prop(self, "use_image_node_display")

        col = split.column()
        sub = col.column(align=True)
        sub.label(text="")
        sub.label(
            text="Set the current frame from the Specials menu in the 3D View [W]")
        sub.label(
            text="Refresh the current Scene. Hotkey: F5 or in Specials menu [W]")

        sub.separator()
        sub.label(text="") # General
        sub.label(
            text="Quickly save and reload the current file (no warning!). "
                 "File menu or Ctrl+Shift+W")
        sub.label(
            text="SMPTE Timecode and frames left/ahead on Timeline's header")
        sub.label(
            text="Display extra statistics for Scenes, Cameras, and Meshlights (Cycles)")

        sub.separator()
        sub.label(text="") # Nodes
        sub.label(
            text="When selecting an Image node, display it on the Image editor "
                 "(if any)")

# Properties
def init_properties():

    scene = bpy.types.Scene
    node = bpy.types.Node
    nodes_compo = bpy.types.CompositorNodeTree

    scene.use_unsimplify_render = BoolProperty(
        default=False,
        name="Unsimplify Render",
        description="Disable Simplify during render")
    scene.simplify_status = BoolProperty(default=False)

    node.use_matching_indices = BoolProperty(
        default=True,
        description="If disabled, display all available indices")

    nodes_compo_types = [
        ("ALL", "All Types", "", 0),
        ("BLUR", "Blur", "", 1),
        ("BOKEHBLUR", "Bokeh Blur", "", 2),
        ("VECBLUR", "Vector Blur", "", 3),
        ("DEFOCUS", "Defocus", "", 4),
        ("R_LAYERS", "Render Layer", "", 5)
        ]

    nodes_compo.types = EnumProperty(
        items=nodes_compo_types, name = "Types")

    nodes_compo.toggle_mute = BoolProperty(default=False)
    node.status = BoolProperty(default=False)

    # Scene Debug
    # Cycles Node Types
    cycles_shader_node_types = [
        ("BSDF_DIFFUSE", "Diffuse BSDF", "", 0),
        ("BSDF_GLOSSY", "Glossy BSDF", "", 1),
        ("BSDF_TRANSPARENT", "Transparent BSDF", "", 2),
        ("BSDF_REFRACTION", "Refraction BSDF", "", 3),
        ("BSDF_GLASS", "Glass BSDF", "", 4),
        ("BSDF_TRANSLUCENT", "Translucent BSDF", "", 5),
        ("BSDF_ANISOTROPIC", "Anisotropic BSDF", "", 6),
        ("BSDF_VELVET", "Velvet BSDF", "", 7),
        ("BSDF_TOON", "Toon BSDF", "", 8),
        ("SUBSURFACE_SCATTERING", "Subsurface Scattering", "", 9),
        ("EMISSION", "Emission", "", 10),
        ("BSDF_HAIR", "Hair BSDF", "", 11),
        ("BACKGROUND", "Background", "", 12),
        ("AMBIENT_OCCLUSION", "Ambient Occlusion", "", 13),
        ("HOLDOUT", "Holdout", "", 14),
        ("VOLUME_ABSORPTION", "Volume Absorption", "", 15),
        ("VOLUME_SCATTER", "Volume Scatter", "", 16)
        ]

    scene.amaranth_cycles_node_types = EnumProperty(
        items=cycles_shader_node_types, name = "Shader")

    scene.amaranth_debug_scene_list_lamps = BoolProperty(
        default=False,
        name="Lamps List",
        description="Display a list of all the lamps")

    scene.amaranth_debug_scene_list_missing_images = BoolProperty(
        default=False,
        name="List Missing Images",
        description="Display a list of all the missing images")

    scene.amaranth_cycles_list_sampling = BoolProperty(
        default=False,
        name="Samples Per:")

    bpy.types.ShaderNodeNormal.normal_vector = prop_normal_vector
    bpy.types.CompositorNodeNormal.normal_vector = prop_normal_vector
    
    bpy.types.CyclesRenderSettings.use_samples_final = BoolProperty(
        name="Use Final Render Samples",
        description="Use current shader samples as final render samples",
        default=False,)


def clear_properties():
    props = (
        "use_unsimplify_render",
        "simplify_status",
        "use_matching_indices",
        "use_simplify_nodes_vector",
        "status",
        "types",
        "toggle_mute",
        "amaranth_cycles_node_types",
        "amaranth_debug_scene_list_lamps",
        "amaranth_debug_scene_list_missing_images",
        "amarath_cycles_list_sampling",
        "normal_vector",
        "use_samples_final"
    )
    
    wm = bpy.context.window_manager
    for p in props:
        if p in wm:
            del wm[p]

# Some settings are bound to be saved on a startup py file
def amaranth_text_startup(context):

    amth_text_name = "AmaranthStartup.py"
    amth_text_exists = False

    global amth_text

    try:
        for tx in bpy.data.texts:
            if tx.name == amth_text_name:
                amth_text_exists = True
                amth_text = bpy.data.texts[amth_text_name]
                break
            else:
                amth_text_exists = False
                bpy.ops.text.new()
                amth_text = bpy.data.texts[-1]
                amth_text.name = amth_text_name
                amth_text.write("# Amaranth Startup Script\nimport bpy\n\n")
                amth_text.use_module = True
                break

        return amth_text_exists
    except AttributeError:
        return None

# FEATURE: Refresh Scene!
class AMTH_SCENE_OT_refresh(Operator):
    """Refresh the current scene"""
    bl_idname = "scene.refresh"
    bl_label = "Refresh!"
    
    def execute(self, context):
        preferences = context.user_preferences.addons[__name__].preferences
        scene = context.scene

        if preferences.use_scene_refresh:    
            # Changing the frame is usually the best way to go
            scene.frame_current = scene.frame_current
            self.report({"INFO"}, "Scene Refreshed!")
            
        return {'FINISHED'}

def button_refresh(self, context):

    preferences = context.user_preferences.addons[__name__].preferences

    if preferences.use_scene_refresh:
        self.layout.separator()
        self.layout.operator(
            AMTH_SCENE_OT_refresh.bl_idname,
            text="Refresh!",
            icon='FILE_REFRESH')
# // FEATURE: Refresh Scene!

# FEATURE: Save & Reload
def save_reload(self, context, path):

    if path:
        bpy.ops.wm.save_mainfile()
        self.report({'INFO'}, "Saved & Reloaded")
        bpy.ops.wm.open_mainfile("EXEC_DEFAULT", filepath=path)
    else:
        bpy.ops.wm.save_as_mainfile("INVOKE_AREA")

class AMTH_WM_OT_save_reload(Operator):
    """Save and Reload the current blend file"""
    bl_idname = "wm.save_reload"
    bl_label = "Save & Reload"

    def execute(self, context):

        path = bpy.data.filepath
        save_reload(self, context, path)
        return {'FINISHED'}

def button_save_reload(self, context):

    preferences = context.user_preferences.addons[__name__].preferences

    if preferences.use_file_save_reload:
        self.layout.separator()
        self.layout.operator(
            AMTH_WM_OT_save_reload.bl_idname,
            text="Save & Reload",
            icon='FILE_REFRESH')
# // FEATURE: Save & Reload

# FEATURE: Current Frame
def button_frame_current(self, context):

    preferences = context.user_preferences.addons[__name__].preferences
    scene = context.scene

    if preferences.use_frame_current:
        self.layout.separator()
        self.layout.prop(
            scene, "frame_current",
            text="Set Current Frame")
# // FEATURE: Current Frame

# FEATURE: Timeline Time + Frames Left
def label_timeline_extra_info(self, context):

    preferences = context.user_preferences.addons[__name__].preferences
    layout = self.layout
    scene = context.scene

    if preferences.use_timeline_extra_info:
        row = layout.row(align=True)

        # Check for preview range
        frame_start = scene.frame_preview_start if scene.use_preview_range else scene.frame_start
        frame_end = scene.frame_preview_end if scene.use_preview_range else scene.frame_end
        
        row.label(text="%s / %s" % (bpy.utils.smpte_from_frame(scene.frame_current - frame_start),
                        bpy.utils.smpte_from_frame(frame_end - frame_start)))

        if (scene.frame_current > frame_end):
            row.label(text="%s Frames Ahead" % ((frame_end - scene.frame_current) * -1))
        elif (scene.frame_current == frame_start):
            row.label(text="Start Frame (%s left)" % (frame_end - scene.frame_current))
        elif (scene.frame_current == frame_end):
            row.label(text="%s End Frame" % scene.frame_current)
        else:
            row.label(text="%s Frames Left" % (frame_end - scene.frame_current))

# // FEATURE: Timeline Time + Frames Left

# FEATURE: Directory Current Blend
class AMTH_FILE_OT_directory_current_blend(Operator):
    """Go to the directory of the currently open blend file"""
    bl_idname = "file.directory_current_blend"
    bl_label = "Current Blend's Folder"

    def execute(self, context):
        bpy.ops.file.select_bookmark(dir='//')
        return {'FINISHED'}

def button_directory_current_blend(self, context):

    if bpy.data.filepath:
        self.layout.operator(
            AMTH_FILE_OT_directory_current_blend.bl_idname,
            text="Current Blend's Folder",
            icon='APPEND_BLEND')
# // FEATURE: Directory Current Blend

# FEATURE: Libraries panel on file browser
class AMTH_FILE_PT_libraries(Panel):
    bl_space_type = 'FILE_BROWSER'
    bl_region_type = 'CHANNELS'
    bl_label = "Libraries"

    def draw(self, context):
        layout = self.layout

        libs = bpy.data.libraries
        libslist = []

        # Build the list of folders from libraries
        import os

        for lib in libs:
            directory_name = os.path.dirname(lib.filepath)
            libslist.append(directory_name)

        # Remove duplicates and sort by name
        libslist = set(libslist)
        libslist = sorted(libslist)

        # Draw the box with libs

        row = layout.row()
        box = row.box()

        if libslist:
            col = box.column()
            for filepath in libslist:
                if filepath != '//':
                    row = col.row()
                    row.alignment = 'LEFT'
                    props = row.operator(
                        AMTH_FILE_OT_directory_go_to.bl_idname,
                        text=filepath, icon="BOOKMARKS",
                        emboss=False)
                    props.filepath = filepath
        else:
            box.label(text='No libraries loaded')

class AMTH_FILE_OT_directory_go_to(Operator):
    """Go to this library's directory"""
    bl_idname = "file.directory_go_to"
    bl_label = "Go To"

    filepath = bpy.props.StringProperty(subtype="FILE_PATH")

    def execute(self, context):
        bpy.ops.file.select_bookmark(dir=self.filepath)
        return {'FINISHED'}

# FEATURE: Node Templates
class AMTH_NODE_OT_AddTemplateVignette(Operator):
    bl_idname = "node.template_add_vignette"
    bl_label = "Add Vignette"
    bl_description = "Add a vignette effect"
    bl_options = {'REGISTER', 'UNDO'}

    @classmethod
    def poll(cls, context):
        space = context.space_data
        return space.type == 'NODE_EDITOR' \
                and space.node_tree is not None \
                and space.tree_type == 'CompositorNodeTree'

    # used as reference the setup scene script from master nazgul
    def _setupNodes(self, context):
        scene = context.scene
        space = context.space_data
        tree = scene.node_tree

        bpy.ops.node.select_all(action='DESELECT')

        ellipse = tree.nodes.new(type='CompositorNodeEllipseMask')
        ellipse.width = 0.8
        ellipse.height = 0.4
        blur = tree.nodes.new(type='CompositorNodeBlur')
        blur.use_relative = True
        blur.factor_x = 30
        blur.factor_y = 50
        ramp = tree.nodes.new(type='CompositorNodeValToRGB')
        ramp.color_ramp.interpolation = 'B_SPLINE'
        ramp.color_ramp.elements[1].color = (0.6, 0.6, 0.6, 1)

        overlay = tree.nodes.new(type='CompositorNodeMixRGB')
        overlay.blend_type = 'OVERLAY'
        overlay.inputs[0].default_value = 0.8
        overlay.inputs[1].default_value = (0.5, 0.5, 0.5, 1)

        tree.links.new(ellipse.outputs["Mask"],blur.inputs["Image"])
        tree.links.new(blur.outputs["Image"],ramp.inputs[0])
        tree.links.new(ramp.outputs["Image"],overlay.inputs[2])

        if tree.nodes.active:
            blur.location = tree.nodes.active.location
            blur.location += Vector((330.0, -250.0))
        else:
            blur.location += Vector((space.cursor_location[0], space.cursor_location[1]))

        ellipse.location = blur.location
        ellipse.location += Vector((-300.0, 0))

        ramp.location = blur.location
        ramp.location += Vector((175.0, 0))

        overlay.location = ramp.location
        overlay.location += Vector((240.0, 275.0))

        for node in {ellipse, blur, ramp, overlay}:
            node.select = True
            node.show_preview = False

        bpy.ops.node.join()

        frame = ellipse.parent
        frame.label = 'Vignette'
        frame.use_custom_color = True
        frame.color = (0.783538, 0.0241576, 0.0802198)
        
        overlay.parent = None
        overlay.label = 'Vignette Overlay'

    def execute(self, context):
        self._setupNodes(context)

        return {'FINISHED'}

# Node Templates Menu
class AMTH_NODE_MT_amaranth_templates(Menu):
    bl_idname = 'AMTH_NODE_MT_amaranth_templates'
    bl_space_type = 'NODE_EDITOR'
    bl_label = "Templates"
    bl_description = "List of Amaranth Templates"

    def draw(self, context):
        layout = self.layout
        layout.operator(
            AMTH_NODE_OT_AddTemplateVignette.bl_idname,
            text="Vignette",
            icon='COLOR')

def node_templates_pulldown(self, context):

    if context.space_data.tree_type == 'CompositorNodeTree':
        layout = self.layout
        row = layout.row(align=True)
        row.scale_x = 1.3
        row.menu("AMTH_NODE_MT_amaranth_templates",
            icon="RADIO")
# // FEATURE: Node Templates

def node_stats(self,context):
    if context.scene.node_tree:
        tree_type = context.space_data.tree_type
        nodes = context.scene.node_tree.nodes
        nodes_total = len(nodes.keys())
        nodes_selected = 0
        for n in nodes:
            if n.select:
                nodes_selected = nodes_selected + 1

        if tree_type == 'CompositorNodeTree':
            layout = self.layout
            row = layout.row(align=True)
            row.label(text="Nodes: %s/%s" % (nodes_selected, str(nodes_total)))

# FEATURE: Simplify Compo Nodes
class AMTH_NODE_PT_simplify(Panel):
    '''Simplify Compositor Panel'''
    bl_space_type = 'NODE_EDITOR'
    bl_region_type = 'UI'
    bl_label = 'Simplify'
    bl_options = {'DEFAULT_CLOSED'}

    @classmethod
    def poll(cls, context):
        space = context.space_data
        return space.type == 'NODE_EDITOR' \
                and space.node_tree is not None \
                and space.tree_type == 'CompositorNodeTree'

    def draw(self, context):
        layout = self.layout
        node_tree = context.scene.node_tree

        if node_tree is not None:
            layout.prop(node_tree, 'types')
            layout.operator(AMTH_NODE_OT_toggle_mute.bl_idname,
                text="Turn On" if node_tree.toggle_mute else "Turn Off",
                icon='RESTRICT_VIEW_OFF' if node_tree.toggle_mute else 'RESTRICT_VIEW_ON')
        
            if node_tree.types == 'VECBLUR':
                layout.label(text="This will also toggle the Vector pass {}".format(
                                    "on" if node_tree.toggle_mute else "off"), icon="INFO")

class AMTH_NODE_OT_toggle_mute(Operator):
    """"""
    bl_idname = "node.toggle_mute"
    bl_label = "Toggle Mute"

    def execute(self, context):
        scene = context.scene
        node_tree = scene.node_tree
        node_type = node_tree.types
        rlayers = scene.render
        
        if not 'amaranth_pass_vector' in scene.keys():
            scene['amaranth_pass_vector'] = []
        
        #can't extend() the list, so make a dummy one
        pass_vector = scene['amaranth_pass_vector']

        if not pass_vector:
            pass_vector = []

        if node_tree.toggle_mute:
            for node in node_tree.nodes:
                if node_type == 'ALL':
                    node.mute = node.status
                if node.type == node_type:
                    node.mute = node.status
                if node_type == 'VECBLUR':
                    for layer in rlayers.layers:
                        if layer.name in pass_vector:
                            layer.use_pass_vector = True
                            pass_vector.remove(layer.name)

                node_tree.toggle_mute = False

        else:
            for node in node_tree.nodes:
                if node_type == 'ALL':
                    node.mute = True
                if node.type == node_type:
                    node.status = node.mute
                    node.mute = True
                if node_type == 'VECBLUR':
                    for layer in rlayers.layers:
                        if layer.use_pass_vector:
                            pass_vector.append(layer.name)
                            layer.use_pass_vector = False
                            pass

                node_tree.toggle_mute = True

        # Write back to the custom prop
        pass_vector = sorted(set(pass_vector))
        scene['amaranth_pass_vector'] = pass_vector

        return {'FINISHED'}
        

# FEATURE: OB/MA ID panel in Node Editor
class AMTH_NODE_PT_indices(Panel):
    '''Object / Material Indices Panel'''
    bl_space_type = 'NODE_EDITOR'
    bl_region_type = 'UI'
    bl_label = 'Object / Material Indices'
    bl_options = {'DEFAULT_CLOSED'}

    @classmethod
    def poll(cls, context):
        node = context.active_node
        return node and node.type == 'ID_MASK'

    def draw(self, context):
        layout = self.layout

        objects = bpy.data.objects
        materials = bpy.data.materials
        node = context.active_node

        show_ob_id = False
        show_ma_id = False
        matching_ids = False

        if context.active_object:
            ob_act = context.active_object
        else:
            ob_act = False

        for ob in objects:
            if ob and ob.pass_index > 0:
                show_ob_id = True
        for ma in materials:
            if ma and ma.pass_index > 0:
                show_ma_id = True
        row = layout.row(align=True)  
        row.prop(node, 'index', text="Mask Index")
        row.prop(node, 'use_matching_indices', text="Only Matching IDs")
        
        layout.separator()

        if not show_ob_id and not show_ma_id:
            layout.label(text="No objects or materials indices so far.", icon="INFO")

        if show_ob_id:
            split = layout.split()
            col = split.column()
            col.label(text="Object Name")
            split.label(text="ID Number")
            row = layout.row()
            for ob in objects:
                icon = "OUTLINER_DATA_" + ob.type
                if ob.library:
                    icon = "LIBRARY_DATA_DIRECT"
                elif ob.is_library_indirect:
                    icon = "LIBRARY_DATA_INDIRECT"

                if ob and node.use_matching_indices \
                      and ob.pass_index == node.index \
                      and ob.pass_index != 0:
                    matching_ids = True
                    row.label(
                      text="[{}]".format(ob.name)
                          if ob_act and ob.name == ob_act.name else ob.name,
                      icon=icon)
                    row.label(text="%s" % ob.pass_index)
                    row = layout.row()

                elif ob and not node.use_matching_indices \
                        and ob.pass_index > 0:

                    matching_ids = True
                    row.label(
                      text="[{}]".format(ob.name)
                          if ob_act and ob.name == ob_act.name else ob.name,
                      icon=icon)
                    row.label(text="%s" % ob.pass_index)
                    row = layout.row()

            if node.use_matching_indices and not matching_ids:
                row.label(text="No objects with ID %s" % node.index, icon="INFO")

            layout.separator()

        if show_ma_id:
            split = layout.split()
            col = split.column()
            col.label(text="Material Name")
            split.label(text="ID Number")
            row = layout.row()

            for ma in materials:
                icon = "BLANK1"
                if ma.use_nodes:
                    icon = "NODETREE"
                elif ma.library:
                    icon = "LIBRARY_DATA_DIRECT"
                    if ma.is_library_indirect:
                        icon = "LIBRARY_DATA_INDIRECT"

                if ma and node.use_matching_indices \
                      and ma.pass_index == node.index \
                      and ma.pass_index != 0:
                    matching_ids = True
                    row.label(text="%s" % ma.name, icon=icon)
                    row.label(text="%s" % ma.pass_index)
                    row = layout.row()

                elif ma and not node.use_matching_indices \
                        and ma.pass_index > 0:

                    matching_ids = True
                    row.label(text="%s" % ma.name, icon=icon)
                    row.label(text="%s" % ma.pass_index)
                    row = layout.row()

            if node.use_matching_indices and not matching_ids:
                row.label(text="No materials with ID %s" % node.index, icon="INFO")


# // FEATURE: OB/MA ID panel in Node Editor

# FEATURE: Unsimplify on render
@persistent
def unsimplify_render_pre(scene):
    render = scene.render
    scene.simplify_status = render.use_simplify

    if scene.use_unsimplify_render:
        render.use_simplify = False

@persistent
def unsimplify_render_post(scene):
    render = scene.render
    render.use_simplify = scene.simplify_status

def unsimplify_ui(self,context):
    scene = bpy.context.scene
    self.layout.prop(scene, 'use_unsimplify_render')
# //FEATURE: Unsimplify on render

# FEATURE: Extra Info Stats
def stats_scene(self, context):

    preferences = context.user_preferences.addons[__name__].preferences

    if preferences.use_scene_stats:
        scenes_count = str(len(bpy.data.scenes))
        cameras_count = str(len(bpy.data.cameras))
        cameras_selected = 0
        meshlights = 0
        meshlights_visible = 0
    
        for ob in context.scene.objects:
            if ob.material_slots:
                for ma in ob.material_slots:
                    if ma.material:
                        if ma.material.node_tree:
                            for no in ma.material.node_tree.nodes:
                                if no.type == 'EMISSION':
                                    for ou in no.outputs:
                                        if ou.links:
                                            meshlights += 1
                                            if ob in context.visible_objects:
                                                meshlights_visible += 1
                                            break
            if ob in context.selected_objects:
                if ob.type == 'CAMERA':
                    cameras_selected += 1
    
        meshlights_string = '| Meshlights:{}/{}'.format(meshlights_visible, meshlights)
    
        row = self.layout.row(align=True)
        row.label(text="Scenes:{} | Cameras:{}/{} {}".format(
                   scenes_count, cameras_selected, cameras_count,
                   meshlights_string if context.scene.render.engine == 'CYCLES' else ''))

# //FEATURE: Extra Info Stats

# FEATURE: Camera Bounds as Render Border
class AMTH_VIEW3D_OT_render_border_camera(Operator):
    """Set camera bounds as render border"""
    bl_idname = "view3d.render_border_camera"
    bl_label = "Camera as Render Border"

    @classmethod
    def poll(cls, context):
        return context.space_data.region_3d.view_perspective == 'CAMERA'

    def execute(self, context):
        render = context.scene.render
        render.use_border = True
        render.border_min_x = 0
        render.border_min_y = 0
        render.border_max_x = 1
        render.border_max_y = 1

        return {'FINISHED'}

def button_render_border_camera(self, context):

    view3d = context.space_data.region_3d
    
    if view3d.view_perspective == 'CAMERA':
        layout = self.layout
        layout.separator()
        layout.operator(AMTH_VIEW3D_OT_render_border_camera.bl_idname,
                        text="Camera as Render Border", icon="FULLSCREEN_ENTER")

# //FEATURE: Camera Bounds as Render Border

# FEATURE: Passepartout options on W menu
def button_camera_passepartout(self, context):

    view3d = context.space_data.region_3d
    cam = context.scene.camera.data
    
    if view3d.view_perspective == 'CAMERA':
        layout = self.layout
        if cam.show_passepartout:
            layout.prop(cam, "passepartout_alpha", text="Passepartout")
        else:
            layout.prop(cam, "show_passepartout")

# FEATURE: Show Only Render with Alt+Shift+Z
class AMTH_VIEW3D_OT_show_only_render(Operator):
    bl_idname = "view3d.show_only_render"
    bl_label = "Show Only Render"

    def execute(self, context):
        space = bpy.context.space_data
        
        if space.show_only_render:
            space.show_only_render = False
        else:
            space.show_only_render = True
        return {'FINISHED'}


# FEATURE: Display Active Image Node on Image Editor
# Made by Sergey Sharybin, tweaks from Bassam Kurdali
image_nodes = {"CompositorNodeImage",
               "ShaderNodeTexImage",
               "ShaderNodeTexEnvironment"}

class AMTH_NODE_OT_show_active_node_image(Operator):
    """Show active image node image in the image editor"""
    bl_idname = "node.show_active_node_image"
    bl_label = "Show Active Node Node"
    bl_options = {'UNDO'}

    def execute(self, context):
        preferences = context.user_preferences.addons[__name__].preferences
        if preferences.use_image_node_display:
            if context.active_node:
                active_node = context.active_node
                if active_node.bl_idname in image_nodes and active_node.image:
                    for area in context.screen.areas:
                        if area.type == "IMAGE_EDITOR":
                            for space in area.spaces:
                                if space.type == "IMAGE_EDITOR":
                                    space.image = active_node.image
                            break
    
        return {'FINISHED'}
# // FEATURE: Display Active Image Node on Image Editor

# FEATURE: Select Meshlights
class AMTH_OBJECT_OT_select_meshlights(Operator):
    """Select light emitting meshes"""
    bl_idname = "object.select_meshlights"
    bl_label = "Select Meshlights"
    bl_options = {'UNDO'}

    @classmethod
    def poll(cls, context):
        return context.scene.render.engine == 'CYCLES'

    def execute(self, context):
        # Deselect everything first
        bpy.ops.object.select_all(action='DESELECT')

        for ob in context.scene.objects:
            if ob.material_slots:
                for ma in ob.material_slots:
                    if ma.material:
                        if ma.material.node_tree:
                            for no in ma.material.node_tree.nodes:
                                if no.type == 'EMISSION':
                                    ob.select = True
                                    context.scene.objects.active = ob

        if not context.selected_objects and not context.scene.objects.active:
            self.report({'INFO'}, "No meshlights to select")

        return {'FINISHED'}

def button_select_meshlights(self, context):
    
    if context.scene.render.engine == 'CYCLES':
        self.layout.operator('object.select_meshlights', icon="LAMP_SUN")
# // FEATURE: Select Meshlights

# FEATURE: Mesh Symmetry Tools by Sergey Sharybin
class AMTH_MESH_OT_find_asymmetric(Operator):
    """
    Find asymmetric vertices
    """

    bl_idname = "mesh.find_asymmetric"
    bl_label = "Find Asymmetric"
    bl_options = {'UNDO', 'REGISTER'}

    @classmethod
    def poll(cls, context):
        object = context.object
        if object:
            return object.mode == 'EDIT' and object.type == 'MESH'
        return False

    def execute(self, context):
        threshold = 1e-6

        object = context.object
        bm = bmesh.from_edit_mesh(object.data)

        # Deselect all the vertices
        for v in bm.verts:
            v.select = False

        for v1 in bm.verts:
            if abs(v1.co[0]) < threshold:
                continue

            mirror_found = False
            for v2 in bm.verts:
                if v1 == v2:
                    continue
                if v1.co[0] * v2.co[0] > 0.0:
                    continue

                mirror_coord = Vector(v2.co)
                mirror_coord[0] *= -1
                if (mirror_coord - v1.co).length_squared < threshold:
                    mirror_found = True
                    break
            if not mirror_found:
                v1.select = True

        bm.select_flush_mode()

        bmesh.update_edit_mesh(object.data)

        return {'FINISHED'}

class AMTH_MESH_OT_make_symmetric(Operator):
    """
    Make symmetric
    """

    bl_idname = "mesh.make_symmetric"
    bl_label = "Make Symmetric"
    bl_options = {'UNDO', 'REGISTER'}

    @classmethod
    def poll(cls, context):
        object = context.object