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Talk:OniSplit: Difference between revisions
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"What does flip normal do?" | "What does flip normal do?" | ||
As Wikipedia puts it, "Surface normals are commonly used in 3D computer graphics for lighting calculations". A normal is simply a calculation of a line passing through the polygon at a right angle that is best performed at the time of saving the file rather than at runtime in a game, to save CPU cycles. But which *way* is the line going through the 'gon? If it's set to go the wrong way, the polygon will be lit on the inside, not the outside (at least, the outside won't be lit), hence black polygons. As to why normals get flipped in the first place, *shrug*. --[[User:Iritscen|Iritscen]] 16:42, 11 April 2008 (CEST) | As Wikipedia puts it, "Surface normals are commonly used in 3D computer graphics for lighting calculations". A normal is simply a calculation of a line passing through the polygon at a right angle that is best performed at the time of saving the file rather than at runtime in a game, to save CPU cycles. But which *way* is the line going through the 'gon? If it's set to go the wrong way, the polygon will be lit on the inside, not the outside (at least, the outside won't be lit), hence black polygons. As to why normals get flipped in the first place, *shrug*. --[[User:Iritscen|Iritscen]] 16:42, 11 April 2008 (CEST) | ||
Hmm... a bunch of comments :). Let's see a couple of them: | |||
:*Selection: you should have no trouble with selection if "Only Export Selection" options is not used. Of course, since Blender "checkboxes" differ only in colour between checked/unchecked states you may want to be carefull about what options are checked. In addtion make sure you selected the scene you want to export before exporting if you have more than one scene. | |||
:*Copy/Paste: I have no idea how to copy/paste stuff in Blender. I wonder if it actually supports that, I have a feeling that it does not... | |||
:*Blender - one document application: Yes, it is. But you should be able to import a file (obj, dae) in a "document". | |||
:*Cheetah3D: no idea how it is but it's probably better than Blender, anything's better than Blender (at least in terms of user interface) :). Not sure if it has a Collada exporter/importer? | |||
[[User:Neo|Neo]] | |||