[wadalabfont-kit] / java / Point.java

Diff of /java/Point.java

-version 1.2, Wed Jan  3 02:46:31 2001 UTC
+version 1.3, Thu Jan  4 10:23:56 2001 UTC
  Line 1
  Line 1
  Line 1
  //
- //
- //
  // $B:BI87O$,2hLL:BI87O(B($B:8>e$,(B(0,0))$B$G$"$k$3$H$KCm0U$9$k(B
  //
+ //        (0,-1)
+ // (-1,0) (0,0)  (1,0)
+ //        (0,1)
  public final class Point {
    double x,y;
    // 10^-5$B0J2<$O(B0$B$H8+$J$9!%(B
- Line 26
+ Line 27
  Line 26
  Line 27
    public Point minus(Point p){
      return new Point(x-p.getX(),y-p.getY());
    }
+   public Point neg(){
+     return new Point(-x,-y);
+   }
    public Point times(double r){
      return new Point(x*r,y*r);
    }
+   public Point timesX(double r){
+     return new Point(x*r,y);
+   }
+   public Point timesY(double r){
+     return new Point(x,y*r);
+   }
    // $B%Y%/%?!<$ND9$5$r(B newLength$B$K@55,2=$9$k!%(B
    public Point normal(double newLength){
      double ratio=newLength/length();
- Line 47
+ Line 57
  Line 47
  Line 57
    public Point rot270(){
      return new Point(-y,x);
    }
+   // $BG$0UEY$N2sE>(B
+   public Point rot(double theta){
+     double cosTheta=Math.cos(theta),sinTheta=Math.sin(theta);
+     return new Point(x*cosTheta+y*sinTheta,-x*sinTheta+y*cosTheta);
+   }
    // $B<+J,$H%Y%/%?!<(Bp$B$NFb@Q(B(inner product)
    public double product(Point p){
      return x*p.x+y*p.y;
    }
+   // (1,0)$B$+$i8+$?<+J,$N3QEY(B
+   public double theta(){
+     return Math.atan2(-y,x);
+   }
    // $B<+J,$+$i%Y%/%?!<(Bp$B$r8+$?3QEY$N(B cos
    public double cosTheta(Point p){
      return product(p)/(p.length()*length());

-Generate output suitable for use with a patch program
+Legend:



Removed from v.1.2
 


changed lines


 
Added in v.1.3
 Legend:



Removed from v.1.2
 


changed lines


 
Added in v.1.3
-Removed from v.1.2
+Added in v.1.3

ktanaka

Diff of /java/Point.java

ViewCVS and CVS Help