Installation

In Blender open Edit, Preferences, Get Extensions, then use Install from Disk and pick the glass_generator zip.

Usage

1. Open the Glass tab in the 3D viewport sidebar (N). With no glass selected, click the picture to choose one of the 39 glass types, or browse the five families, and add it at the 3D cursor. You can also use Shift+A, Mesh, Drinking Glass.
2. The card at the top shows the glass type, its size in mm and its capacity in ml. Surprise makes a new random glass, Vary changes the current one a little, the drop button pours a random drink, the palette button picks a random finish and the arrow resets the glass type.
3. The tabs hold every setting: Shape (size, outline, lip, rim and walls), Stem (stem, foot, base and handle), Pattern (cut and pressed patterns), Drink (drink, color, foam, bubbles, ice, condensation, garnish and straw), Glass (kind of glass, surface, gilded rim and render engine) and Parts (part visibility, detail, Fit to Capacity, Photo Studio, Convert to Mesh, Delete).
4. Every picture choice opens a gallery: click the picture next to a setting to see all its options.

Use Rendered view in Cycles for real refraction and colored drinks. Photo Studio adds a seamless backdrop, softboxes and a camera ready to render. Materials switch between Cycles and EEVEE versions automatically with the render engine.