Interface CameraLens

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      Ray getRay​(float x, float y, int imageWidth, int imageHeight, double lensX, double lensY, double time)
      Create a new rayto be cast through pixel (x,y) on the image plane.
    • Method Detail

      • getRay

        Ray getRay​(float x,
                   float y,
                   int imageWidth,
                   int imageHeight,
                   double lensX,
                   double lensY,
                   double time)
        Create a new rayto be cast through pixel (x,y) on the image plane. Two sampling parameters are provided for lens sampling. They are guarenteed to be in the interval [0,1). They can be used to perturb the position of the source of the ray on the lens of the camera for DOF effects. A third sampling parameter is provided for motion blur effects. Note that the Camera class already handles camera movement motion blur. Rays should be generated in camera space - that is, with the eye at the origin, looking down the -Z axis, with +Y pointing up.
        Parameters:
        x - x coordinate of the (sub)pixel
        y - y coordinate of the (sub)pixel
        imageWidth - image width in pixels
        imageHeight - image height in pixels
        lensX - x lens sampling parameter
        lensY - y lens sampling parameter
        time - time sampling parameter
        Returns:
        a new ray passing through the given pixel