ClassRod - Wrj4P5 Wiki - Wrj4P5

Class Rod - the model of 3D-Line

test applet and codes are here

  * Class Rod, the model of partial line on the 3D space,
  *                      spanned from it's stern to it's bow
  *                                      created by Classiclll, 6/28/2008
         Rod(Loc s, Loc b)               // only constructor you can use
         Loc at(float t)                 // location at t, at(0):stern, at(me.length):bow
         Rod move(Loc to)                // move stern to "to"
         Rod shift(Loc diff)             // shift stern by "diff"
         Rod shiftI(Loc diff)            // inverse shift
         Rod scale(float factor)         // scale the size of me by factor
         Rod scaleI(float factor)        // inverse scaling
         Loc intersect2D(Rod to)         // intersect position on the x-y plane
         Rod rotate(Loc dir, float ang)  // rotate me around the directonal vector
         Rod rotate(Rod ax, float ang)   // rotate me around the ax (Rod, model of 3D line)
         float signedDist2D(Rod pt)// distance with sign of left/right side on the x-y plane
         float dist2D(Loc pt)            // distance between "me" and "pt" on the x-y plane
         Loc normal(Loc pt)              // the normal directional vector from "me" to "pt"
         Rod ortho(Loc pt)               // the shortest rod connecting from "me" to "pt"
         Rod nearest(Rod to)             // the shortest rod connecting from "me" to "to"
         float dist(Loc pt)              // distance between "me" and "pt"
         boolean having(Loc pt)          // is "me" having "pt" on myself ?
         float dist(Rod to)              // least distance between "me" and line "to"
         boolean crossing(Rod to)        // are "me" and "to" crossing each other ?
         float length()                  // length of me
         Loc stern()                     // location of the stern of me
         Loc bow()                       // location of the bow of me
         Loc fore()                      // foward direction of me, the unit vector
         Boolean equals(Object to)
         String toString()