The createModel() function enables instantiation of p5.Geometry objects directly from textual mesh data, bypassing external file dependencies. Unlike loadModel() which fetches binary assets asynchronously from URLs, this method processes OBJ or STL formatted strings already present in memory—ideal for procedurally generated meshes, user-uploaded content, or API-delivered geometry.

Function Signature

createModel(sourceString, format, normalize, [successCallback], [failureCallback], [flipU], [flipV])

Paramter	Type	Description
sourceString	String	Raw OBJ or STL content, typically obtained via loadStrings() or generated algorithmically
format	String	File specification: 'obj' or 'stl' (lowercase, without dot)
normalize	Boolean	When true, auto-scales geometry to unit dimensions based on bounding box maximum extent
successCallback	Function	Optional handler receiving the finalized p5.Geometry instance
failureCallback	Function	Optional error handler receiving expection details
flipU/flipV	Boolean	Optional texture coordinate inversion flags for mapped materials

Implementation Example

The following generates a tetrahedron from inline vertex data:

let pyramid;

function setup() {
  createCanvas(600, 600, WEBGL);
  
  const tetrahedronData = [
    'v 0 1 0',
    'v -0.816 -0.5 0.577',
    'v 0.816 -0.5 0.577',
    'v 0 -0.5 -1.155',
    'f 1 2 3',
    'f 1 3 4',
    'f 1 4 2',
    'f 2 4 3'
  ].join('\n');
  
  pyramid = createModel(
    tetrahedronData, 
    'obj', 
    true, 
    (geom) => console.log(`Vertices loaded: ${geom.vertices.length}`),
    (err) => console.warn('Parsing error:', err)
  );
}

function draw() {
  background(220);
  orbitControl();
  
  ambientLight(60);
  pointLight(255, 200, 150, 200, -200, 200);
  
  push();
  rotateZ(frameCount * 0.015);
  rotateX(frameCount * 0.012);
  specularMaterial(100, 150, 255);
  shininess(50);
  model(pyramid);
  pop();
}