Development Journal of a Raytracer

The preview is now much better. It still has one weakness, there is no line when a face would be split, but the rest is all implemented. I even added new abilities to my program to have more powerful preview capabilities. The preview is completely independent from a concrete object and is only bound to an editor. So an editor can very easily show some simple graphics to visualize changes.

One of the additions was that I can now show an arbitrary number of vertices as preview. I only could show vertices when using a line of length zero. It was mostly sufficient, but I think, that especially the previews should play a more important role in the future. With that new capability I intend to show which of the snap points are close when starting to implement moving around vertices. That should make it much easier to hit the right point. The costs should be fairly low, I will have to add some additional code in the snapping function to not only return a list of points a vertex should snap to, but also a list of all the potential snap points which are close by. I have to calculate the distance in any case, so I can also collect the ones close by.