Class VertexIterator

constructor

• new VertexIterator(vertexBuffer: VertexBuffer): VertexIterator

  Create a new VertexIterator instance.

  Parameters

  • vertexBuffer: VertexBuffer

    The vertex buffer to be iterated.

  Returns VertexIterator

element

end

• end(): void

  Notifies the vertex buffer being iterated that writes are complete. Internally the vertex buffer is unlocked and vertex data is uploaded to video memory.

  Returns void

  Example

  const iterator = new pc.VertexIterator(vertexBuffer);
  iterator.element[pc.SEMANTIC_POSITION].set(-0.9, -0.9, 0.0);
  iterator.element[pc.SEMANTIC_COLOR].set(255, 0, 0, 255);
  iterator.next();
  iterator.element[pc.SEMANTIC_POSITION].set(0.9, -0.9, 0.0);
  iterator.element[pc.SEMANTIC_COLOR].set(0, 255, 0, 255);
  iterator.next();
  iterator.element[pc.SEMANTIC_POSITION].set(0.0, 0.9, 0.0);
  iterator.element[pc.SEMANTIC_COLOR].set(0, 0, 255, 255);
  iterator.end();
  Copy

next

• next(count?: number): void

  Moves the vertex iterator on to the next vertex.

  Parameters

  • Optionalcount: number = 1

    Number of steps to move on when calling next. Defaults to 1.

  Returns void

  Example

  const iterator = new pc.VertexIterator(vertexBuffer);
  iterator.element[pc.SEMANTIC_POSITION].set(-0.9, -0.9, 0.0);
  iterator.element[pc.SEMANTIC_COLOR].set(255, 0, 0, 255);
  iterator.next();
  iterator.element[pc.SEMANTIC_POSITION].set(0.9, -0.9, 0.0);
  iterator.element[pc.SEMANTIC_COLOR].set(0, 255, 0, 255);
  iterator.next();
  iterator.element[pc.SEMANTIC_POSITION].set(0.0, 0.9, 0.0);
  iterator.element[pc.SEMANTIC_COLOR].set(0, 0, 255, 255);
  iterator.end();
  Copy