modules/javafx.graphics/src/main/java/com/sun/marlin/Renderer.java

*** 66,85 ****
      public static final int SIZEOF_EDGE_BYTES = (int)(OFF_YMAX + SIZE_INT);
  
      // curve break into lines
      // cubic error in subpixels to decrement step
      private static final float CUB_DEC_ERR_SUBPIX
!         = 1f * (NORM_SUBPIXELS / 8f); // 1 subpixel for typical 8x8 subpixels
      // cubic error in subpixels to increment step
      private static final float CUB_INC_ERR_SUBPIX
!         = 0.4f * (NORM_SUBPIXELS / 8f); // 0.4 subpixel for typical 8x8 subpixels
  
!     // cubic bind length to decrement step = 8 * error in subpixels
!     // multiply by 8 = error scale factor:
      public static final float CUB_DEC_BND
          = 8f * CUB_DEC_ERR_SUBPIX;
!     // cubic bind length to increment step = 8 * error in subpixels
      public static final float CUB_INC_BND
          = 8f * CUB_INC_ERR_SUBPIX;
  
      // cubic countlg
      public static final int CUB_COUNT_LG = 2;
--- 66,86 ----
      public static final int SIZEOF_EDGE_BYTES = (int)(OFF_YMAX + SIZE_INT);
  
      // curve break into lines
      // cubic error in subpixels to decrement step
      private static final float CUB_DEC_ERR_SUBPIX
!         = 1f * (NORM_SUBPIXELS / 8f); // 1 pixel
      // cubic error in subpixels to increment step
      private static final float CUB_INC_ERR_SUBPIX
!         = 0.4f * (NORM_SUBPIXELS / 8f); // 0.4 pixel
  
!     // bad paths (59294/100000 == 59,29%, 94335 bad pixels (avg = 1,59), 3966 warnings (avg = 0,07)
! 
!     // cubic bind length to decrement step
      public static final float CUB_DEC_BND
          = 8f * CUB_DEC_ERR_SUBPIX;
!     // cubic bind length to increment step
      public static final float CUB_INC_BND
          = 8f * CUB_INC_ERR_SUBPIX;
  
      // cubic countlg
      public static final int CUB_COUNT_LG = 2;
*** 97,107 ****
      private static final float CUB_INV_COUNT_3 = 1f / CUB_COUNT_3;
  
      // quad break into lines
      // quadratic error in subpixels
      private static final float QUAD_DEC_ERR_SUBPIX
!         = 1f * (NORM_SUBPIXELS / 8f); // 1 subpixel for typical 8x8 subpixels
  
      // quadratic bind length to decrement step = 8 * error in subpixels
      public static final float QUAD_DEC_BND
          = 8f * QUAD_DEC_ERR_SUBPIX;
  
--- 98,110 ----
      private static final float CUB_INV_COUNT_3 = 1f / CUB_COUNT_3;
  
      // quad break into lines
      // quadratic error in subpixels
      private static final float QUAD_DEC_ERR_SUBPIX
!         = 0.5f * (NORM_SUBPIXELS / 8f); // 0.5 pixel
! 
!     // bad paths (62916/100000 == 62,92%, 103818 bad pixels (avg = 1,65), 6514 warnings (avg = 0,10)
  
      // quadratic bind length to decrement step = 8 * error in subpixels
      public static final float QUAD_DEC_BND
          = 8f * QUAD_DEC_ERR_SUBPIX;
  
*** 166,176 ****
                                            final float x2, final float y2)
      {
          int count = 1; // dt = 1 / count
  
          // maximum(ddX|Y) = norm(dbx, dby) * dt^2 (= 1)
!         float maxDD = FloatMath.max(Math.abs(c.dbx), Math.abs(c.dby));
  
          final float _DEC_BND = QUAD_DEC_BND;
  
          while (maxDD >= _DEC_BND) {
              // divide step by half:
--- 169,179 ----
                                            final float x2, final float y2)
      {
          int count = 1; // dt = 1 / count
  
          // maximum(ddX|Y) = norm(dbx, dby) * dt^2 (= 1)
!         float maxDD = Math.abs(c.dbx) + Math.abs(c.dby);
  
          final float _DEC_BND = QUAD_DEC_BND;
  
          while (maxDD >= _DEC_BND) {
              // divide step by half:
*** 245,255 ****
          final float _DEC_BND = CUB_DEC_BND;
          final float _INC_BND = CUB_INC_BND;
  
          while (count > 0) {
              // divide step by half:
!             while (Math.abs(ddx) >= _DEC_BND || Math.abs(ddy) >= _DEC_BND) {
                  dddx /= 8f;
                  dddy /= 8f;
                  ddx = ddx/4f - dddx;
                  ddy = ddy/4f - dddy;
                  dx = (dx - ddx) / 2f;
--- 248,258 ----
          final float _DEC_BND = CUB_DEC_BND;
          final float _INC_BND = CUB_INC_BND;
  
          while (count > 0) {
              // divide step by half:
!             while (Math.abs(ddx) + Math.abs(ddy) >= _DEC_BND) {
                  dddx /= 8f;
                  dddy /= 8f;
                  ddx = ddx/4f - dddx;
                  ddy = ddy/4f - dddy;
                  dx = (dx - ddx) / 2f;
*** 265,275 ****
              // TODO: why use first derivative dX|Y instead of second ddX|Y ?
              // both scale changes should use speed or acceleration to have the same metric.
  
              // can only do this on even "count" values, because we must divide count by 2
              while (count % 2 == 0
!                    && Math.abs(dx) <= _INC_BND && Math.abs(dy) <= _INC_BND)
              {
                  dx = 2f * dx + ddx;
                  dy = 2f * dy + ddy;
                  ddx = 4f * (ddx + dddx);
                  ddy = 4f * (ddy + dddy);
--- 268,278 ----
              // TODO: why use first derivative dX|Y instead of second ddX|Y ?
              // both scale changes should use speed or acceleration to have the same metric.
  
              // can only do this on even "count" values, because we must divide count by 2
              while (count % 2 == 0
!                    && Math.abs(dx) + Math.abs(dy) <= _INC_BND)
              {
                  dx = 2f * dx + ddx;
                  dy = 2f * dy + ddy;
                  ddx = 4f * (ddx + dddx);
                  ddy = 4f * (ddy + dddy);