Computer Graphics – Assignments (2DT904, Linnaeus University)

This repository contains my assignments for the course Computer Graphics (2DT904). The course covers both theoretical aspects of the graphics pipeline and practical programming using OpenGL.

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Contents

Assignment 1 – Transformations & Visibility

• Focus: Homogeneous transformations, per-triangle data, and visibility algorithms.
• Topics covered:
  • Translation & rotation using 4×4 matrices
  • Mapping between coordinate spaces
  • Per-triangle vs. per-vertex data
  • Visibility determination: Z-buffer, frustum culling, backface culling
• Deliverable: Solution PDF

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Assignment 2 – Rasterization, Interpolation & Lighting

• Focus: Rasterization and fragment processing in the rendering pipeline.
• Topics covered:
  • Pixel inclusion using edge functions
  • Color interpolation with barycentric coordinates
  • Phong lighting model (ambient + diffuse)
  • Texture sampling: nearest and bilinear filtering
  • UV mapping
• Deliverable: Solution PDF

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Programming Assignment – OpenGL Applications

This assignment consisted of implementing two interactive OpenGL programs.

Solar System

• Animated solar system with:
  • A sun in the center
  • Four planets in orbit
  • A moon orbiting the third planet
• Features:
  • Different colors, sizes, and angular velocities
  • Ambient, diffuse, and specular lighting
  • Local rotation of planets
  • Camera controls with keyboard/mouse interaction
• Implementation: SolarSystem.py + sphere.py

Data Visualization

• Visualization of 50 datapoints ([x, y, weight]) in a 2D graph.
• Features:
  • Points scaled by weight
  • Grayscale coloring based on data weight
  • Automatic coordinate normalization to viewport
  • Circles rendered with center markers
• Implementation: DataVisualization.py + datapoints.py

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Requirements

• Python 3.10+
• PyOpenGL
• GLFW
• NumPy

Install dependencies:

pip install PyOpenGL glfw numpy