p5.js model()用法及代碼示例

let ballObj, cubeObj, coneObj; 
let currentObj; 
let newFont; 
  
// Load all the models in preload() 
function preload() { 
  newFont = loadFont("fonts/Montserrat.otf"); 
  ballObj = loadModel("models/ball.obj", true); 
  cubeObj = loadModel("models/cube.obj", true); 
  coneObj = loadModel("models/cone.obj", true); 
  currentObj = ballObj; 
} 
  
function setup() { 
  createCanvas(400, 300, WEBGL); 
  
  textFont(newFont, 14); 
  
  modelSelector = createSelect(); 
  modelSelector.position(30, 40); 
  modelSelector.option("ball"); 
  modelSelector.option("cube"); 
  modelSelector.option("cone"); 
  modelSelector.changed(modelChanged); 
} 
  
// Function to change the model depending 
// on the selected dropdown  
function modelChanged() { 
  let selected = modelSelector.value(); 
  console.log(selected); 
  switch (selected) { 
    case "ball":
      currentObj = ballObj; 
      break; 
    case "cube":
      currentObj = cubeObj; 
      break; 
    case "cone":
      currentObj = coneObj; 
      break; 
    default:
      break; 
  } 
} 
  
function draw() { 
  background("green"); 
  text("Use the dropdown to select the model to display", -185, -125); 
  scale(0.75); 
  lights(); 
  rotateX(frameCount * 0.05); 
  rotateY(frameCount * 0.05); 
  noStroke(); 
  
  // Load the given model 
  model(currentObj); 
}