Slide variables. X-axis aligned triangle filler. This filler is mostly for translucent triangles, which is possible through translucent pen. Using an x-axis filler allows non-overlapping lines so there are no places more opaque. However, at high resolution you can see some overlapping from the outlines when the resolution is set to a high number.
This is a re-release of the previous x-axis tri-filler. Did some optimization to avoid unnecessary calculations, and I'm getting a 7-12% performance gain.
