When in doubt, have a look at the source code of the graphical
primitives to determine the semantics of each one. Unlike line primitive
which draws a path immediately, lineto is meant to be used multiple
times, as part of a draw path. So, lineto does not really draw, it just
adds a vertex to a vertex storage object. To draw a path, you need to
use the drawPath(option):
agg^.lineWidth(4);
agg^.lineColor(0, 155, 0, 255);
agg^.rectangle(10, 10, 50, 50);
agg^.lineColor(155, 0, 0, 255);
agg^.line(60, 10, 60, 50);
agg^.lineto(100,50); //no line drawn here, just adds to
vertex storage
agg^.drawPath(StrokeOnly); //draw path
agg^.lineColor(0, 0, 155, 255);
agg^.moveto(100, 10);
agg^.lineto(100,50); //no line drawn here, just adds to
vertex storage
agg^.drawPath(StrokeOnly); //draw path
agg^.lineColor(155, 0, 155, 255);
agg^.line(120, 10, 120, 50);
On 06/23/2017 01:27 PM, James Richters wrote:
I'm trying to switch over a program to use aggpas but I'm not getting any
results from moveto or lineto am I missing something?
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