What is preventing me from specifying a specific position in my multi-dimensional array?

Question

What is preventing me from specifying a specific position in my multi-dimensional array?

My goal is to create a 3D version of an L-System, but I'm having trouble declaring elements in my multidimensional array. Even when I try to assign values to specific positions, the elements don't seem to update properly. For instance, if I write something like arraygrowth[0][1] = 100;, the element at that position remains as 0.

let arraygrowth =[];
arraygrowth.push(new THREE.Vector3(0,0,0)); 
arraygrowth.push(new THREE.Vector3(0,0,0));
arraygrowth.push(new THREE.Vector3(0,0,0));

arraygrowth [0][1] = 100;
arraygrowth [1][1] = 100;
arraygrowth [2][1] = 100;

javascript three.js

Answer 1

Answer №1

When optimizing your code, the process is similar to this:

let growthArray = [];
growthArray.push(new THREE.Vector3(0,0,0));
growthArray.push(new THREE.Vector3(0,0,0));
growthArray.push(new THREE.Vector3(0,0,0));

growthArray[0].y = 100;
growthArray[1].y = 100;
growthArray[2].y = 100;

This can be simplified as

new THREE.Vector3(0, 0, 0).y = 100;

, which is not the correct way to modify the x, y, z values of a Vector3 object. Accessing arraygrowth[0] returns a Vector3 where you need to use its properties or methods to set the desired value. For instance:

growthArray[0].y = 100; // Assigns y value
growthArray[0].setY(100); // Also assigns y value
growthArray[0].setComponent(1) = 100; // Also assigns y value

Answer 2

When optimizing your code, the process is similar to this:

let growthArray = [];
growthArray.push(new THREE.Vector3(0,0,0));
growthArray.push(new THREE.Vector3(0,0,0));
growthArray.push(new THREE.Vector3(0,0,0));

growthArray[0].y = 100;
growthArray[1].y = 100;
growthArray[2].y = 100;

This can be simplified as

new THREE.Vector3(0, 0, 0).y = 100;

, which is not the correct way to modify the x, y, z values of a Vector3 object. Accessing arraygrowth[0] returns a Vector3 where you need to use its properties or methods to set the desired value. For instance:

growthArray[0].y = 100; // Assigns y value
growthArray[0].setY(100); // Also assigns y value
growthArray[0].setComponent(1) = 100; // Also assigns y value

What is preventing me from specifying a specific position in my multi-dimensional array?

Answer №1

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