3D Modeling FoundationsPrimitive Shapes
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3D Modeling Foundations

Course progress0/15
1Introduction to 3D
  • What is 3D Modeling?
  • Real-World Applications
  • The Coordinate System
  • Your First 3D Object
2Navigating 3D Space
  • Viewport Navigation
  • Grid, Axes, and Helpers
  • Navigate and Position
3Basic Shapes
  • Primitive Shapes
  • Transforming Objects
  • Naming and Organizing
  • Build a Simple Object
4Materials & Lighting
  • Understanding Materials
  • Lighting Basics
  • Apply Materials
5Mini Project
  • Mini Project: Build a Desk Scene

3D Modeling Foundations

Course progress0/15
1Introduction to 3D
  • What is 3D Modeling?
  • Real-World Applications
  • The Coordinate System
  • Your First 3D Object
2Navigating 3D Space
  • Viewport Navigation
  • Grid, Axes, and Helpers
  • Navigate and Position
3Basic Shapes
  • Primitive Shapes
  • Transforming Objects
  • Naming and Organizing
  • Build a Simple Object
4Materials & Lighting
  • Understanding Materials
  • Lighting Basics
  • Apply Materials
5Mini Project
  • Mini Project: Build a Desk Scene

Primitive Shapes

Geometric shapes
Basic geometric shapes are the building blocks of 3D
Primitives are the basic building blocks of 3D modeling. Every complex model starts with these simple shapes.

Available Primitives

ShapeIconBest For
Box📦Buildings, furniture, boxes
Sphere⚪Balls, planets, organic shapes
Cylinder🥫Pipes, pillars, cups
Cone🔺Roofs, funnels, spikes
Torus🍩Rings, donuts, wheels
Plane▭Floors, walls, surfaces
Info
The term "primitive" comes from the idea that these are the most fundamental, indivisible shapes - the "atoms" of 3D modeling.

How Primitives are Built

Each primitive has different properties:

Box

  • Width (X), Height (Y), Depth (Z)
  • Perfect edges and corners
  • Great for architectural elements

Sphere

  • Radius
  • Made of many triangular faces
  • More segments = smoother surface

Cylinder

  • Top radius, bottom radius, height
  • Set top radius to 0 for a cone
  • Radial segments control smoothness

Torus (Donut)

  • Ring radius + tube radius
  • Great for rings and wheels

Building Complex Shapes

Most 3D models are combinations of primitives:

  • A table = Box (top) + 4 Cylinders (legs)

  • A snowman = 3 Spheres stacked

  • A house = Boxes + Cone (roof)

Tip
Start simple! Even professional 3D artists begin with primitives and refine from there.

You'll learn to combine shapes in the next modules!