src/java.desktop/share/classes/sun/java2d/marlin/Curve.java

*** 54,84 ****
      void set(float x1, float y1,
               float x2, float y2,
               float x3, float y3,
               float x4, float y4)
      {
!         ax = 3.0f * (x2 - x3) + x4 - x1;
!         ay = 3.0f * (y2 - y3) + y4 - y1;
!         bx = 3.0f * (x1 - 2.0f * x2 + x3);
!         by = 3.0f * (y1 - 2.0f * y2 + y3);
!         cx = 3.0f * (x2 - x1);
!         cy = 3.0f * (y2 - y1);
          dx = x1;
          dy = y1;
          dax = 3.0f * ax; day = 3.0f * ay;
          dbx = 2.0f * bx; dby = 2.0f * by;
      }
  
      void set(float x1, float y1,
               float x2, float y2,
               float x3, float y3)
      {
          ax = 0.0f; ay = 0.0f;
!         bx = x1 - 2.0f * x2 + x3;
!         by = y1 - 2.0f * y2 + y3;
!         cx = 2.0f * (x2 - x1);
!         cy = 2.0f * (y2 - y1);
          dx = x1;
          dy = y1;
          dax = 0.0f; day = 0.0f;
          dbx = 2.0f * bx; dby = 2.0f * by;
      }
--- 54,90 ----
      void set(float x1, float y1,
               float x2, float y2,
               float x3, float y3,
               float x4, float y4)
      {
!         final float dx32 = 3.0f * (x3 - x2);
!         final float dy32 = 3.0f * (y3 - y2);
!         final float dx21 = 3.0f * (x2 - x1);
!         final float dy21 = 3.0f * (y2 - y1);
!         ax = (x4 - x1) - dx32;
!         ay = (y4 - y1) - dy32;
!         bx = (dx32 - dx21);
!         by = (dy32 - dy21);
!         cx = dx21;
!         cy = dy21;
          dx = x1;
          dy = y1;
          dax = 3.0f * ax; day = 3.0f * ay;
          dbx = 2.0f * bx; dby = 2.0f * by;
      }
  
      void set(float x1, float y1,
               float x2, float y2,
               float x3, float y3)
      {
+         final float dx21 = (x2 - x1);
+         final float dy21 = (y2 - y1);
          ax = 0.0f; ay = 0.0f;
!         bx = (x3 - x2) - dx21;
!         by = (y3 - y2) - dy21;
!         cx = 2.0f * dx21;
!         cy = 2.0f * dy21;
          dx = x1;
          dy = y1;
          dax = 0.0f; day = 0.0f;
          dbx = 2.0f * bx; dby = 2.0f * by;
      }