Method updatePixels

src/image/p5.Image.js:273–300

* Updates the canvas with the RGBA values in the * img.pixels array. * * `img.updatePixels()` only needs to be called after changing values in * the img.pixels array. Such changes can be * made directly after calling *

(x, y, w, h)

   * }
   */
  updatePixels(x, y, w, h) {
    // Renderer2D.prototype.updatePixels.call(this, x, y, w, h);
    const pixelsState = this._pixelsState;
    const pd = this._pixelDensity;
    if (
      x === undefined &&
      y === undefined &&
      w === undefined &&
      h === undefined
    ) {
      x = 0;
      y = 0;
      w = this.width;
      h = this.height;
    }
    x *= pd;
    y *= pd;
    w *= pd;
    h *= pd;

    if (this.gifProperties) {
      this.gifProperties.frames[this.gifProperties.displayIndex].image =
        pixelsState.imageData;
    }

    this.drawingContext.putImageData(pixelsState.imageData, x, y, 0, 0, w, h);
    this.setModified(true);
  }

  /**
   * Gets a pixel or a region of pixels from the image.