Randomize all seeds in a project

This example adds an action in the Edit menu to randomize all the random seed properties from the Substance present in the current project.

To use this example:

1. Go to your Python plugin folder (see this page to know where)
2. Create a folder named blending_mode
3. Create a file named init.py
4. Copy the code below inside the file.

Copy
import os
import re
import sys
import math
import json
import random
from datetime import datetime

import substance_painter as sp
import substance_painter_plugins as spp

# Qt5 vs Qt6 check
IsQt5 = sp.application.version_info() < (10,1,0)

if IsQt5 :
    from PySide2 import QtGui
    from PySide2 import QtCore
    from PySide2 import QtWidgets
else :
    from PySide6 import QtGui
    from PySide6 import QtCore
    from PySide6 import QtWidgets

WIDGETS = []

ValidNodeTypes = (
    sp.layerstack.NodeType.FillLayer,
    sp.layerstack.NodeType.FillEffect,
    sp.layerstack.NodeType.FilterEffect,
    sp.layerstack.NodeType.GeneratorEffect
)

def GetSourceMode( Source ) :
    try:
        return Source.source_mode
    except:
        return None

def CheckForRandomseed( CurrentSource, Sources ) :
    if type( CurrentSource ) == sp.source.SourceSubstance :
        Parameters = CurrentSource.get_parameters()

        # Check if the Substance has a random seed
        if "$randomseed" in Parameters :
            Sources.append( CurrentSource )

        # Check if any of the inputs of the Substance has another
        # Substance with a random seed too
        for Name in CurrentSource.image_inputs :
            InputSource = CurrentSource.get_source( Name )
            CheckForRandomseed( InputSource, Sources )

def FindSources( Node, Sources ) :
    if Node.get_type() in ValidNodeTypes :
        Source = []
        Mode = GetSourceMode( Node )

        if Mode == sp.source.SourceMode.Material :
            Source.append( Node.get_material_source() )

        elif Mode == sp.source.SourceMode.Split :
            for Channel in Node.active_channels :
                Source.append( Node.get_source( Channel ) )

        else :
            Source.append( Node.get_source() )

        for CurrentSource in Source :
            CheckForRandomseed( CurrentSource, Sources )

def IterateLayer( Parent, Sources ) :
    if Parent.get_type() == sp.layerstack.NodeType.FillLayer :
        FindSources( Parent, Sources )

    if Parent.get_type() == sp.layerstack.NodeType.FillLayer \
    or Parent.get_type() == sp.layerstack.NodeType.GroupLayer \
    or Parent.get_type() == sp.layerstack.NodeType.PaintLayer :
        for Effect in Parent.content_effects() :
            FindSources( Effect, Sources )

        for Effect in Parent.mask_effects() :
            FindSources( Effect, Sources )

    if Parent.get_type() == sp.layerstack.NodeType.GroupLayer :
        for Layer in Parent.sub_layers() :
            IterateLayer( Layer, Sources )

def RandomizeSeed() :
    if not sp.project.is_open():
        sp.logging.warning( "No project open" )
        return

    # Sources list
    Sources = []

    # List all stacks and gather their resources
    for TextureSet in sp.textureset.all_texture_sets() :
        for Stack in TextureSet.all_stacks() :
            for Layer in sp.layerstack.get_root_layer_nodes( Stack ) :
                IterateLayer( Layer, Sources )

    # Setup parameters
    Parameters = { "$randomseed" : random.getrandbits(16) }

    # Batch
    with sp.layerstack.ScopedModification( "Randomize all the seeds" ) :
        for Source in Sources :
            Source.set_parameters( Parameters )

def start_plugin():
    ActionBuilder = None
    if IsQt5 :
        ActionBuilder = QtWidgets.QAction
    else :
        ActionBuilder = QtGui.QAction

    Action = ActionBuilder(
        "Randomize all seeds",
        triggered=RandomizeSeed
    )

    sp.ui.add_action(
        sp.ui.ApplicationMenu.Edit,
        Action
    )

    WIDGETS.append( Action )

def close_plugin():
    for Widget in WIDGETS :
        sp.ui.delete_ui_element( Widget )

if __name__ == "__main__":
    start_plugin()
Copied to your clipboard
import os
import re
import sys
import math
import json
import random
from datetime import datetime

import substance_painter as sp
import substance_painter_plugins as spp

# Qt5 vs Qt6 check
IsQt5 = sp.application.version_info() < (10,1,0)

if IsQt5 :
    from PySide2 import QtGui
    from PySide2 import QtCore
    from PySide2 import QtWidgets
else :
    from PySide6 import QtGui
    from PySide6 import QtCore
    from PySide6 import QtWidgets

WIDGETS = []

ValidNodeTypes = (
    sp.layerstack.NodeType.FillLayer,
    sp.layerstack.NodeType.FillEffect,
    sp.layerstack.NodeType.FilterEffect,
    sp.layerstack.NodeType.GeneratorEffect
)

def GetSourceMode( Source ) :
    try:
        return Source.source_mode
    except:
        return None

def CheckForRandomseed( CurrentSource, Sources ) :
    if type( CurrentSource ) == sp.source.SourceSubstance :
        Parameters = CurrentSource.get_parameters()

        # Check if the Substance has a random seed
        if "$randomseed" in Parameters :
            Sources.append( CurrentSource )

        # Check if any of the inputs of the Substance has another
        # Substance with a random seed too
        for Name in CurrentSource.image_inputs :
            InputSource = CurrentSource.get_source( Name )
            CheckForRandomseed( InputSource, Sources )

def FindSources( Node, Sources ) :
    if Node.get_type() in ValidNodeTypes :
        Source = []
        Mode = GetSourceMode( Node )

        if Mode == sp.source.SourceMode.Material :
            Source.append( Node.get_material_source() )

        elif Mode == sp.source.SourceMode.Split :
            for Channel in Node.active_channels :
                Source.append( Node.get_source( Channel ) )

        else :
            Source.append( Node.get_source() )

        for CurrentSource in Source :
            CheckForRandomseed( CurrentSource, Sources )

def IterateLayer( Parent, Sources ) :
    if Parent.get_type() == sp.layerstack.NodeType.FillLayer :
        FindSources( Parent, Sources )

    if Parent.get_type() == sp.layerstack.NodeType.FillLayer \
    or Parent.get_type() == sp.layerstack.NodeType.GroupLayer \
    or Parent.get_type() == sp.layerstack.NodeType.PaintLayer :
        for Effect in Parent.content_effects() :
            FindSources( Effect, Sources )

        for Effect in Parent.mask_effects() :
            FindSources( Effect, Sources )

    if Parent.get_type() == sp.layerstack.NodeType.GroupLayer :
        for Layer in Parent.sub_layers() :
            IterateLayer( Layer, Sources )

def RandomizeSeed() :
    if not sp.project.is_open():
        sp.logging.warning( "No project open" )
        return

    # Sources list
    Sources = []

    # List all stacks and gather their resources
    for TextureSet in sp.textureset.all_texture_sets() :
        for Stack in TextureSet.all_stacks() :
            for Layer in sp.layerstack.get_root_layer_nodes( Stack ) :
                IterateLayer( Layer, Sources )

    # Setup parameters
    Parameters = { "$randomseed" : random.getrandbits(16) }

    # Batch
    with sp.layerstack.ScopedModification( "Randomize all the seeds" ) :
        for Source in Sources :
            Source.set_parameters( Parameters )

def start_plugin():
    ActionBuilder = None
    if IsQt5 :
        ActionBuilder = QtWidgets.QAction
    else :
        ActionBuilder = QtGui.QAction

    Action = ActionBuilder(
        "Randomize all seeds",
        triggered=RandomizeSeed
    )

    sp.ui.add_action(
        sp.ui.ApplicationMenu.Edit,
        Action
    )

    WIDGETS.append( Action )

def close_plugin():
    for Widget in WIDGETS :
        sp.ui.delete_ui_element( Widget )

if __name__ == "__main__":
    start_plugin()

Last updated 9/18/2024

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