Step 2: Customizing lines in JiffycrewLineManager
In step 1, we setup a line drawing scene by adding JiffycrewLineManager blueprint to the level. Let's evaluate options in the panel and see how the line drawing changes with different values.
JiffycrewLineManager is an unified control tower of line drawing. You can turn on/off lines, change blending modes, change line application mode, change line property of different lines types, etc.
JiffycrewLineManager Detail Panel
Jiffycrew Post Process Line uses 200% supersampling to draw anti-aliased lines. Because the supersampling effect is only enabled in play mode, the lines in the editor and play mode may have different looks. To see the final rendering quality while editing, we will modify parameters in play mode. Please click play - selected viewport and then click JiffycrewLineManager.
To see lines on different depth, please move your camera to similar location shown in the image.
In the current result, the lines are drawn on the floor boundary. To remove those lines, turn on UseCustomDepth. Then click three character (actually skeletalmesh) actors, and turn on their render custom depth switches. See that lines are drawn only on characters.
We will now get in the line only drawing mode. Turn off augment scene rendering.
We will now see how depth adaptation makes rendering of far objects different. Turn off depth adaptation and see the result.
No depth adaptation
Now, please restore depth adaptation switch and base depth to default values for further examination.
We will now make line thinner. Change all line widths to 1 to make thin lines.
Suggestive highlight lines are emissive lines that are drawn on the view-dependent ridges on the surface. By combining with suggestive contours they are effective to exaggerate the shape. This line is by default turned off, because emissive lines are rarely used in usual artistic line drawing. But having it often makes the scene more stylish and conveys shapes better. Try to turn it on
Make silhouette line color to (128,0,0), crease line color to (0,128,0), suggestive contour color to (0,0,128), and suggestive highlight color to (128,128,128). and see the result.