gl2 for J8 has a number of incompatibilities with J6, and also just
seems a pixel off in some cases. Since there will be graphics
applications used on both J6 and J8 for a while yet, it seems to me that
J8 ought to do things the J6 way when there is no reason not to.
What I have found so far:
0. glarc seems to go CW around the ellipse; J6 went CCW
1. drawing abutting rectangles, with the same color and no pen, should
leave a smooth field; in J8 there are visible joints
2. drawing text inside a box, the text seems to be shifted one pixel to
the left. Or maybe the box is one pixel to the right.
3. When I draw a box with a pen just inside the wdclip rectangle, the
right and bottom are chopped off. In J6 the cliprect was already one
row/col too short; j8 is even shorter. This may be related to item 2.
This weekend I will release a graphics application for J6 and J8. It
formats properly on J6, and exhibits pixel problems on J8.
Henry Rich
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