[p5.js 2.0 Bug Report]: noFill() + buildGeometry() sets fill to black

[davepagurek]

Most appropriate sub-area of p5.js?

• Accessibility
• Color
• Core/Environment/Rendering
• Data
• DOM
• Events
• Image
• IO
• Math
• Typography
• Utilities
• WebGL
• Build process
• Unit testing
• Internationalization
• Friendly errors
• Other (specify if possible)

p5.js version

2.0.5 (2.0+)

Web browser and version

Any

Operating system

Any

Steps to reproduce this

Steps:

1. Call noFill()
2. Create a stroke-only model with buildGeometry()
3. Draw the stroke-only model with model()

Instead of just drawing a stroke-only model, it draws with a black fill, and logs an internal parameter validation error about an invalid color.

Snippet:

function setup() {
  createCanvas(400, 400, WEBGL);
  background(255)
  stroke('red')
  noFill()
  const geom = buildGeometry(() => {
    beginShape()
    vertex(-50, 50)
    vertex(50, 50)
    vertex(0, -50)
    endShape(CLOSE)
  })

  model(geom)
}

Live: https://editor.p5js.org/davepagurek/sketches/cGiG6zJ-S