app.py

# For neural networks
import keras
# For random calculations
import numpy

# Disable eager execution because its bad
from tensorflow.python.framework.ops import disable_eager_execution
disable_eager_execution()

# Start a session for checking calculations and stuff
#  import tensorflow as tf
# sess = tf.compat.v1.Session()

# from keras import backend as K
# K.set_session(sess)

# Do you want it loud? 
# VERBOSE = 1

# This function loads a fuckton of data
def load_data():
    # Open all the files we downloaded at the beginning and take out hte good bits
    curves = numpy.load('data_curves.npz')['curves']
    geometry = numpy.load('data_geometry.npz')['geometry']
    constants = numpy.load('constants.npz')
    S = constants['S']
    N = constants['N']
    D = constants['D']
    F = constants['F']
    G = constants['G']

    # Some of the good bits need additional processining
    new_curves = numpy.zeros((S*N, D * F))
    for i, curveset in enumerate(curves):
        new_curves[i, :] = curveset.T.flatten() / 1000000

    new_geometry = numpy.zeros((S*N, G * G * G))
    for i, geometryset in enumerate(geometry):
        new_geometry[i, :] = geometryset.T.flatten()

    # Return good bits to user
    return curves, geometry, S, N, D, F, G, new_curves, new_geometry
    
import gradio
import pandas

curves, geometry, S, N, D, F, G, new_curves, new_geometry = load_data()

class Network(object):

  def __init__(self, structure, weights):
      # Instantiate variables
      self.curves = curves
      self.new_curves = new_curves
      self.geometry = geometry
      self.new_geometry = new_geometry
      self.S = S
      self.N = N
      self.D = D
      self.F = F
      self.G = G

      # Load network
      with open(structure, 'r') as file:
          self.network = keras.models.model_from_json(file.read())
          self.network.load_weights(weights)

  def analysis(self, idx=None):
      print(idx)

      if idx is None:
          idx = numpy.random.randint(1, self.S * self.N)
      else:
        idx = int(idx)

      # Get the input
      data_input = self.new_geometry[idx:(idx+1), :]
      other_data_input = data_input.reshape((self.G, self.G, self.G), order='F')

      # Get the outputs
      predicted_output = self.network.predict(data_input)
      true_output = self.new_curves[idx].reshape((3, self.F))
      predicted_output = predicted_output.reshape((3, self.F))

      f = numpy.linspace(0.05, 2.0, 64)
      fd = pandas.DataFrame(f).rename(columns={0: "Frequency"})
      df_pred = pandas.DataFrame(predicted_output.transpose()).rename(columns={0: "Surge", 1: "Heave", 2: "Pitch"})
      df_true = pandas.DataFrame(true_output.transpose()).rename(columns={0: "Surge", 1: "Heave", 2: "Pitch"})

      # return idx, other_data_input, true_output, predicted_output
      return pandas.concat([fd, df_pred], axis=1), pandas.concat([fd, df_true], axis=1)

  def synthesis(self, idx=None):
      print(idx)

      if idx is None:
          idx = numpy.random.randint(1, self.S * self.N)
      else:
        idx = int(idx)

      # Get the input
      data_input = self.new_curves[idx:(idx+1), :]
      other_data_input = data_input.reshape((3, self.F))

      # Get the outputs
      predicted_output = self.network.predict(data_input)
      true_output = self.new_geometry[idx].reshape((self.G, self.G, self.G), order='F')
      predicted_output = predicted_output.reshape((self.G, self.G, self.G), order='F')

      # return idx, other_data_input, true_output, predicted_output
      return predicted_output, true_output
      
  
  def synthesis_from_spectrum(self, other_data_input):
      # Get the input
      data_input = other_data_input.reshape((1, 3*self.F))
 
      # Get the outputs
      predicted_output = self.network.predict(data_input)
      predicted_output = predicted_output.reshape((self.G, self.G, self.G), order='F')

      # return idx, other_data_input, true_output, predicted_output
      return predicted_output

  def get_geometry(self, idx=None):

      if idx is None:
          idx = numpy.random.randint(1, self.S * self.N)
      else:
        idx = int(idx)

      idx = int(idx)

      # Get the input
      data_input = self.new_geometry[idx:(idx+1), :]
      other_data_input = data_input.reshape((self.G, self.G, self.G), order='F')

      # return idx, other_data_input, true_output, predicted_output
      return other_data_input


  def get_performance(self, idx=None):

      if idx is None:
          idx = numpy.random.randint(1, self.S * self.N)
      else:
        idx = int(idx)

      idx = int(idx)

      # Get the input
      data_input = self.new_curves[idx:(idx+1), :]
      other_data_input = data_input.reshape((3, self.F))

      f = numpy.linspace(0.05, 2.0, 64)
      fd = pandas.DataFrame(f).rename(columns={0: "Frequency"})
      df_pred = pandas.DataFrame(other_data_input.transpose()).rename(columns={0: "Surge", 1: "Heave", 2: "Pitch"})
      table = pandas.concat([fd, df_pred], axis=1)

      return table



import plotly.graph_objects as go


def plotly_fig(values):
    X, Y, Z = numpy.mgrid[0:1:32j, 0:1:32j, 0:1:32j]
    fig = go.Figure(data=go.Volume(
        x=X.flatten(),
        y=Y.flatten(),
        z=Z.flatten(),
        value=values.flatten(),
        isomin=-0.1,
        isomax=0.8,
        opacity=0.1, # needs to be small to see through all surfaces
        surface_count=21, # needs to be a large number for good volume rendering
        ))
    return fig 

value_net = Network("16forward_structure.json", "16forward_weights.h5")

def performance(index):
    return value_net.get_performance(index)

def geometry(index):
    values = value_net.get_geometry(index)
    return plotly_fig(values)

def simple_analysis(index): 
    forward_net = Network("16forward_structure.json", "16forward_weights.h5")  
    return forward_net.analysis(index)

def simple_synthesis(index):
    inverse_net = Network("16inverse_structure.json", "16inverse_weights.h5")
    pred, true = inverse_net.synthesis(index)
    return plotly_fig(pred), plotly_fig(true)
    
def synthesis_from_spectrum(df):
    inverse_net = Network("16inverse_structure.json", "16inverse_weights.h5")
    pred = inverse_net.synthesis_from_spectrum(df.to_numpy()[:, 1:])
    return plotly_fig(pred)
   

    

def change_textbox(choice):
    if choice == "cylinder":
        return [gradio.Slider.update(visible=True), gradio.Slider.update(visible=False), gradio.Slider.update(visible=True), gradio.Slider.update(visible=False)]
    elif choice == "sphere":
        return [gradio.Slider.update(visible=False), gradio.Slider.update(visible=False), gradio.Slider.update(visible=True), gradio.Slider.update(visible=False)]
    elif choice == "box":
        return [gradio.Slider.update(visible=True), gradio.Slider.update(visible=True), gradio.Slider.update(visible=False), gradio.Slider.update(visible=True)]
    elif choice == "wedge":
        return [gradio.Slider.update(visible=True), gradio.Slider.update(visible=True), gradio.Slider.update(visible=False), gradio.Slider.update(visible=True)]
    elif choice == "cone":
        return [gradio.Slider.update(visible=True), gradio.Slider.update(visible=False), gradio.Slider.update(visible=True), gradio.Slider.update(visible=False)]

   
with gradio.Blocks() as demo:
    with gradio.Accordion("✨ Read about the ML model here! ✨", open=False):
        with gradio.Row():
            with gradio.Column():
                gradio.Markdown("# Toward the Rapid Design of Engineered Systems Through Deep Neural Networks")
                gradio.HTML("Christopher McComb, Carnegie Mellon University")
                gradio.Markdown("Additive manufacturing is advantageous for producing lightweight components while maintaining function and form. This ability has been bolstered by the introduction of unit lattice cells and the gradation of those cells. In cases where loading varies throughout a part, it may be necessary to use multiple lattice cell types, also known as multi-lattice structures. In such structures, abrupt transitions between geometries may cause stress concentrations, making the boundary a primary failure point; thus, transition regions should be created between each lattice cell type. Although computational approaches have been proposed, smooth transition regions are still difficult to intuit and design, especially between lattices of drastically different geometries. This work demonstrates and assesses a method for using variational autoencoders to automate the creation of transitional lattice cells. In particular, the work focuses on identifying the relationships that exist within the latent space produced by the variational autoencoder. Through computational experimentation, it was found that the smoothness of transition regions was higher when the endpoints were located closer together in the latent space.")
            with gradio.Column():
                download = gradio.HTML("<a href=\"https://huggingface.co/spaces/cmudrc/wecnet/resolve/main/McComb2019_Chapter_TowardTheRapidDesignOfEngineer.pdf\" style=\"width: 60%; display: block; margin: auto;\"><img src=\"https://huggingface.co/spaces/cmudrc/wecnet/resolve/main/coverpage.png\"></a>")
    
    with gradio.Tab("Analysis"):
        with gradio.Tab("Spectrum from Dataset"):                    
            with gradio.Row():
                with gradio.Column():
                    num = gradio.Number(42, label="data index")
                    btn1 = gradio.Button("Select")    
                with gradio.Column():
                    geo = gradio.Plot(label="Geometry")
        
            with gradio.Row():
                btn2 = gradio.Button("Estimate Spectrum")
        
            with gradio.Row():
              with gradio.Column():
                  pred = gradio.Timeseries(x="Frequency", y=['Surge', 'Heave', 'Pitch'], label="Predicted")
        
              with gradio.Column():
                  true = gradio.Timeseries(x="Frequency", y=['Surge', 'Heave', 'Pitch'], label="True")
        
            btn1.click(fn=geometry, inputs=[num], outputs=[geo])
            btn2.click(fn=simple_analysis, inputs=[num], outputs=[pred, true])
            
        with gradio.Tab("Spectrum from DataFrame"):
            with gradio.Row():
                perf = gradio.Timeseries(x="Frequency", y=['Surge', 'Heave', 'Pitch'], label="Performance")
        
            with gradio.Row():
                btn2 = gradio.Button("Synthesize Geometry")
        
            with gradio.Row():
                pred = gradio.Plot(label="Predicted")
        
            btn2.click(fn=synthesis_from_spectrum, inputs=[perf], outputs=[pred])
    
    with gradio.Tab("Synthesis"):        
        with gradio.Tab("Geometry from Dataset"):                    
            with gradio.Row():
                with gradio.Column():
                    num = gradio.Number(42, label="data index")
                    btn1 = gradio.Button("Select")    
                with gradio.Column():
                    perf = gradio.Timeseries(x="Frequency", y=['Surge', 'Heave', 'Pitch'], label="Performance")
        
            with gradio.Row():
                btn2 = gradio.Button("Synthesize Geometry")
        
            with gradio.Row():
              with gradio.Column():
                  pred = gradio.Plot(label="Predicted")
        
              with gradio.Column():
                  true = gradio.Plot(label="True")
        
            btn1.click(fn=performance, inputs=[num], outputs=[perf])
            btn2.click(fn=simple_synthesis, inputs=[num], outputs=[pred, true])
        with gradio.Tab("Geometry from Parameters"):
            with gradio.Row():
                with gradio.Column():
                    radio = gradio.Radio(
                        ["box", "cone", "cylinder", "sphere", "wedge"], label="What kind of shape would you like to generate?", value="box"
                    )
                    height = gradio.Slider(label="Height", interactive=True, minimum=3.0, maximum=10.0, value=6.5)
                    width = gradio.Slider(label="Width", interactive=True, minimum=3.0, maximum=10.0, value=6.5)
                    diameter = gradio.Slider(label="Diameter", interactive=True, minimum=3.0, maximum=10.0, value=6.5, visible=False)
                    length = gradio.Slider(label="Length", interactive=True, minimum=3.0, maximum=10.0, value=6.5)
                
                    radio.change(fn=change_textbox, inputs=radio, outputs=[height, width, diameter, length])
                  
                with gradio.Column():
                    geo = gradio.Plot(label="Geometry")
        
            with gradio.Row():
                btn2 = gradio.Button("Estimate Spectrum")
        
            with gradio.Row():
              with gradio.Column():
                  pred = gradio.Timeseries(x="Frequency", y=['Surge', 'Heave', 'Pitch'], label="Predicted")
        
              with gradio.Column():
                  true = gradio.Timeseries(x="Frequency", y=['Surge', 'Heave', 'Pitch'], label="True")
        
            btn1.click(fn=geometry, inputs=[num], outputs=[geo])
            btn2.click(fn=simple_analysis, inputs=[num], outputs=[pred, true])
    
demo.launch()