p5.js Table getRow()用法及代码示例

function setup() { 
  createCanvas(500, 400); 
  textSize(16); 
  
  rowIDinput = createInput(); 
  rowIDinput.position(30, 50); 
  
  getColBtn = createButton("Get Specified Row"); 
  getColBtn.position(30, 80); 
  getColBtn.mouseClicked(getRow); 
  
  // Create the table 
  table = new p5.Table(); 
  
  // Add two columns 
  table.addColumn("movie"); 
  table.addColumn("rating"); 
  
  // Add 10 randomly generated rows 
  for (let i = 0; i < 10; i++) { 
    let newRow = table.addRow(); 
    newRow.setString("movie", 
      "Movie " + floor(random(1, 100))); 
  
    newRow.setString("rating", 
      floor(random(1, 5))); 
  } 
  
  showTable(); 
} 
  
function getRow() { 
  clear(); 
  
  let rowToFind = rowIDinput.value(); 
  
  // Get the row values using getRow() method 
  if (rowToFind >= 0 && 
      rowToFind < table.getRowCount()) { 
    requested_row = table.getRow(rowToFind); 
  
    // Loop through the array 
    // to display the values 
    text("Row with the same ID:", 20, 120); 
    for (let i = 0; i < requested_row.arr.length; i++) { 
      text(requested_row.arr[i], 
           20 + i * 120, 140); 
    } 
      
  } else
    text("Please enter correct row ID", 20, 120); 
  
  text("Click on the button to get the specified row", 
       20, 20); 
} 
  
function showTable() { 
  clear(); 
  
  // Display the total rows present in the table 
  text("There are " + 
       table.getRowCount() + 
       " rows in the table", 20, 120); 
  
  for (let r = 0; r < table.getRowCount(); r++) 
    for (let c = 0; c < table.getColumnCount(); c++) 
      text(table.getString(r, c), 
           20 + c * 100, 
           140 + r * 20); 
  
  
  text("Click on the button to get the specified row", 
       20, 20); 
}