On my computer OpenGL and my graphics card restricts line width to about 10px. This is usually fine for a drawing that fits within 1000x1000px. However I am required to prepare a file that is 8000x8000px so a line of 10px is not scaled appropriately.
How can I either scale up a small drawing or how can I draw lines of a more appropriate thickness?
You can check out ofxFatlines, which can build you a mesh at a desired thickness from an ofPolyline.
i recently found ofxNanoVG
it is a wrapper for the nanoVG library and it seems to do a really good job in drawing antialiased 2d vector graphics.
PS: in the example remember to change
if you are building in release mode.
I wrote that addon. It is quite outdated, although it should work still. I stopped developing it as ofxNanoVG and ofxShivaVG made a much better job.
Thanks all, will check out ofxShivaVG as a top choice with fallback to ofxNanoVG
Or you may draw solid filled rectangles instead of lines. I use always this workaround and for me it works fine.
I use the rectangle approach. if you wanted to draw a line from ofPoint a to ofPoint b with thickness 40, it would look like this (untested code, just off the top of my head):
ofPoint diff = (b - a).getNormalized();
m.addVertex(a + diff * 20.0);
m.addVertex(a - diff * 20.0);
m.addVertex(b + diff * 20.0);
m.addVertex(b - diff * 20.0);