Step 4: Freestyle line style options
Line style settings define the appearance of lines; we have 5 main menu choices: stroke, color, alpha, thickness and geometry.
In the Geometry tab control, there are thirteen modifiers available that add some 2-dimensional offsets, displacement or noise at lines (geometry image). The Thickness tab has five modifiers available, we can simulate broad and flat pens for calligraphy or change line thickness using the distance to the active camera or mesh material (thickness image). Alpha and Color tabs control the transparency and color of the strokes (alpha-color image). In the Stroke tab we can tweaks lines: remove the ones longer/shorter than the threshold; change types of line caps or enable dashed lines (stroke image).
Step 5: Render setup
For our render, we'll use 2 sets of lines; the first one will be a black line with a calligraphy (orientation 60 degree, min thickness=1, max thickness=2) along with the stroke modifier (curve mapped, min value=1, max value=4). The second set of lines will be white with a calligraphy modifier (60 degree, min thickness=1, max thickness=3) and a spatial noise (amplitude 2, scale 20) and perlin noise (frequency 30 and amplitude 15). Set camera and hit F12 to render.
Top tip 1: Postproduction with Gimp
I usually use material index before I start the render; in this way, when I work in Gimp, I can easily select the different materials of my models and the post-production workflow becomes quicker and more efficient.
Material index pass