p5.js NumberDict minValue()用法及代码示例

function setup() { 
  createCanvas(550, 300); 
  textSize(16); 
  
  text("Click on the button to create a " + 
       "new dictionary and get the lowest value", 
       20, 20); 
  
  setBtn =  
    createButton("Create random dictionary"); 
  setBtn.position(30, 40); 
  setBtn.mouseClicked(createNewDict); 
  
  getBtn = createButton("Get Lowest Value"); 
  getBtn.position(300, 40); 
  getBtn.mouseClicked(getLowestValue); 
} 
  
function createNewDict() { 
  clear(); 
  
  // Create an object with random values 
  let obj = {}; 
  for (let i = 0; i < 5; i++) { 
    let rk = ceil(Math.random() * 100); 
    let rn = floor(Math.random() * 100); 
    rn = (rk > 50) ? rn:-rn; 
  
    obj[rk] = rn; 
  
    text("Key:" + rk + ":Value:" +  
         rn, 40, 120 + 20 * i); 
  } 
  
  // Create a dictionary using the 
  // above values 
  numDict = createNumberDict(obj); 
  
  text("New Dictionary created with values", 
       20, 80); 
  
  text("Click on the button to create a " + 
       "new dictionary and get the lowest value", 
       20, 20); 
} 
  
function getLowestValue() { 
  
  // Get the lowest value in the dictionary 
  let lowestVal = numDict.minValue(); 
  
  // Display the lowest value 
  text("The lowest value in the dictionary is:" + 
       lowestVal, 20, 240); 
  
  text("Click on the button to create a " + 
       "new dictionary and get the lowest value", 
       20, 20); 
}