GSDP:GAM100/CProcessing/imageData()

imageData()

Description

Returns the pixel data array of a PImage if it was created with the CP_IMAGE_STORE_PIXEL_DATA set by setImageFlags()

Parameters

imageCreateTint(PImage img)

• img - (PImage) The image to extract the pixel data from.

Example

PImage justin_face;
int x_size, y_size;

void init()
{
  setImageFlags(CP_IMAGE_STORE_PIXEL_DATA);
  justin_face = loadImage("./Assets/justin1.png");

  x_size = imageWidth(justin_face);
  y_size = imageHeight(justin_face);

  unsigned char* pixel_data = imageData(justin_face);

  // Go through and invert the color of the image
  unsigned i;
  for (i = 0; i < x_size*y_size*4; ++i)
  {
    if (i % 4 == 3)
      continue;

    pixel_data[i] = (unsigned char)255 - pixel_data[i];
  }

  imageUpdate(justin_face);
}

void update()
{
  background(color(255, 255, 255, 255));
  image(justin_face, canvasWidth/2, canvasHeight/2, x_size, y_size, 255);
}

Related

• Main Page
• loadImage()
• loadImageAdvanced()
• image()
• imageRotated()
• imageSize()
• imageMode()
• createImage()
• createImageAdvanced()
• freeImage()
• imageWidth()
• imageHeight()
• imagePixel()
• imageCreateSubimage()
• imageCreateSubimageAdvanced()
• imageCreateTint()
• imageCreateTintAdvanced()
• imageData()
• imageUpdate()
• readFrameBuffer()
• readFrameBufferAdvanced()