Package org.sunflow.core

Class IntersectionState

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

    • Constructor Summary

      Constructors 
      Constructor Description
      IntersectionState()
      Initializes all traversal stacks.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      IntersectionState.StackNode[] getStack()
      Get stack object for tree based AccelerationStructures.
      float getTime()
      Returns the time at which the intersection should be calculated.
      boolean hit()
      Checks to see if a hit has been recorded.
      void setIntersection​(int id)
      Record an intersection with the specified primitive id.
      void setIntersection​(int id, float u, float v)
      Record an intersection with the specified primitive id.
      void setIntersection​(int id, float u, float v, float w)
      Record an intersection with the specified primitive id.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • IntersectionState

        public IntersectionState()
        Initializes all traversal stacks.

    • Method Detail

      • 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

      • 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