In my turtle graphics app based on Eric's jdemogl1.ijs I want to use the
drawPrimitive() function to draw a line. For now I am experimenting with
drawing directly from ev_command_enter_ajax(ts).
My version of ev_command_enter_ajax() is below, and when I leave all 3
lines of code in, I get the error alert `ev_command_enter_ajax(d) failed`
[Btw, notice the 'd' in the parens]. I believe the values of color (ts[0])
and move (ts[1]) are correct strings created by the J code, because
alert(color); and alert(move); produced the expected result.
Any ideas about how to get the drawPrimitive() to work?
function ev_command_enter_ajax(ts)
{
var color=ts[0];
var move=ts[1];
drawPrimitive(gl.LINES,color,move);
}
Btw, the next 3 lines are copied from Eric's jdemogl1.ijs. Does the last
one contain a typo regarding the final semicolon in the last one? (If so,
should it be before the right curly bracket?)
function ev_body_load(){init();} // must use JHS framework load handler
function ev_bgcolor_click(){jdoajax([],"");}
function ev_bgcolor_click_ajax(ts){bgcolor=eval(ts[0]);draw()};
Thank you,
--
(B=)
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