Describe the requirements for a Python + OpenGL application for morphing objects with a slider.

For a Python + OpenGL application implementing object morphing with a slider, the main requirements are:

• Loading and displaying 3D models with support for vertices and their attributes.
• Implementing a morphing algorithm that smoothly interpolates vertices between two or more objects.
• A user interface with a slider to control the degree of morphing.
• Handling input events to update the scene in real-time.
• Optimizing rendering for smooth animation.

An example of a simplified Python code structure using PyOpenGL and PyQt for the GUI:

from PyQt5.QtWidgets import QApplication, QSlider, QVBoxLayout, QWidget
from OpenGL.GL import *
from OpenGL.GLU import *

class MorphWidget(QWidget):
    def __init__(self):
        super().__init__()
        self.slider = QSlider()
        self.slider.valueChanged.connect(self.update_morph)
        layout = QVBoxLayout()
        layout.addWidget(self.slider)
        self.setLayout(layout)
        # Loading models and initializing OpenGL

    def update_morph(self, value):
        t = value / 100.0  # morphing degree from 0 to 1
        # Interpolating vertices and updating the scene
        self.update()

    def paintGL(self):
        glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
        # Rendering the morphing object

This is a basic example; a real application would require more complex logic for loading models and calculating the morphing.