MIDI Kinetics Forum

Im not experienced with html5 canvas but I have reasons to believe the CCW setting in

canvas_arc(c, x, y, r, start, end,ccw)

doesnt work!

If it did, shouldnt I be able to get the "larger" part of the "circle" instead of the small one in my attached example? it seems as though the parser always chooses the "shorter" route for the path...is that even possible? I tried switching the CCW setting, I even tried switching the end-start points....but still.....

...as per this....

http://www.w3schools.com/tags/playcanva ... cclockwise

Hi
Yes it does seem like there is some 'oddness' going on . . .

One solution is simply changing values - .75*pi,2.25*pi instead of 0.25*pi,0.75*pi . . .

MM

Ok! I didnt know I could use negative values....

This did what I was after!

-1.25*pi, .25*pi

I can't see why not - it is simply describing a point on the arc ....
-1.25*pi is the same point as .75 . . .
And .25 is the same point as 2.25 . .
Though mixing the values can lead to the wrong arc . .
Pretty sure it will get sorted soon enough . ..

Am similarly going through various Canvas tuts of Net and converting them, as well as picking apart the provided examples . .
Yes it will take a little time to get up to speed on it all, but it is often productive play that can breed new ideas . ..
Lots of different ways to achieve similar things, as well as different ways to structure complex draw functions . ..

MM

Thanks for the report, investigating.