Package org.sunflow.math

Class MovingMatrix4

  • public final class MovingMatrix4
extends java.lang.Object
    This class describes a transformation matrix that changes over time. Note that while unlimited motion segments are supported, it is assumed that these segments represent equidistant samples within a given time range.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      private float inv  
      private float t0  
      private float t1  
      private Matrix4[] transforms  

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private MovingMatrix4​(int n, float t0, float t1, float inv)  
        MovingMatrix4​(Matrix4 m)
      Constructs a simple static matrix.

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      Matrix4 getData​(int i)
      Get the matrix for the given time step.
      MovingMatrix4 inverse()  
      int numSegments()
      Get the number of matrix segments
      Matrix4 sample​(float time)  
      void setSteps​(int n)
      Redefines the number of steps in the matrix.
      void updateData​(int i, Matrix4 m)
      Updates the matrix for the given time step.
      void updateTimes​(float t0, float t1)
      Update the time extents over which the matrix data is changing.

      • Methods inherited from class java.lang.Object

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

    • Field Detail

      • transforms

        private Matrix4[] transforms

      • t0

        private float t0

      • t1

        private float t1

      • inv

        private float inv

    • Constructor Detail

      • MovingMatrix4

        public MovingMatrix4​(Matrix4 m)
        Constructs a simple static matrix.
        Parameters:
        m - matrix value at all times

      • MovingMatrix4

        private MovingMatrix4​(int n,
                      float t0,
                      float t1,
                      float inv)

    • Method Detail

      • setSteps

        public void setSteps​(int n)
        Redefines the number of steps in the matrix. The contents are only re-allocated if the number of steps changes. This is to allow the matrix to be incrementally specified.
        Parameters:
        n -

      • updateData

        public void updateData​(int i,
                       Matrix4 m)
        Updates the matrix for the given time step.
        Parameters:
        i - time step to update
        m - new value for the matrix at this time step

      • getData

        public Matrix4 getData​(int i)
        Get the matrix for the given time step.
        Parameters:
        i - time step to get
        Returns:
        matrix for the specfied time step

      • numSegments

        public int numSegments()
        Get the number of matrix segments
        Returns:
        number of segments

      • updateTimes

        public void updateTimes​(float t0,
                        float t1)
        Update the time extents over which the matrix data is changing. If the interval is empty, no motion will be produced, even if multiple values have been specified.
        Parameters:
        t0 -
        t1 -

      • sample

        public Matrix4 sample​(float time)