Package org.sunflow.core

Class IntersectionState

java.lang.Object
org.sunflow.core.IntersectionState
public final class IntersectionState extends Object
This class is used to store ray/object intersections. It also provides additional data to assist AccelerationStructure objects with traversal.

  • Constructor Details

    • IntersectionState

      public IntersectionState()
      Initializes all traversal stacks.

  • Method Details

    • getTime

      public float getTime()
      Returns the time at which the intersection should be calculated. This will be constant for a given ray-tree. This value is guarenteed to be between the camera's shutter open and shutter close time.
      Returns:
      time value

    • getStack

      public final IntersectionState.StackNode[] getStack()
      Get stack object for tree based AccelerationStructures.
      Returns:
      array of stack nodes

    • hit

      public final boolean hit()
      Checks to see if a hit has been recorded.
      Returns:
      true if a hit has been recorded, false otherwise

    • setIntersection

      public final void setIntersection(int id)
      Record an intersection with the specified primitive id. The parent object is assumed to be the current instance. The u and v parameters are used to pinpoint the location on the surface if needed.
      Parameters:
      id - primitive id of the intersected object

    • setIntersection

      public final void setIntersection(int id, float u, float v)
      Record an intersection with the specified primitive id. The parent object is assumed to be the current instance. The u and v parameters are used to pinpoint the location on the surface if needed.
      Parameters:
      id - primitive id of the intersected object
      u - u surface paramater of the intersection point
      v - v surface parameter of the intersection point

    • setIntersection

      public final void setIntersection(int id, float u, float v, float w)
      Record an intersection with the specified primitive id. The parent object is assumed to be the current instance. The u and v parameters are used to pinpoint the location on the surface if needed.
      Parameters:
      id - primitive id of the intersected object
      u - u surface paramater of the intersection point
      v - v surface parameter of the intersection point