Difference between revisions of "DrawInfo"
(oops, draw<capital 'I'>nfo)
Revision as of 17:16, 12 September 2007
DrawInfo allows clients to render mesh more efficiently through LODs (Level of Detail). Many associate drawinfo with the ability to create moving objects in a map.
The code must be added to the mesh object.
drawInfo dlist # display list for all material sets decorative # older clients with not see this mesh angvel <degrees/sec> # rotation about initial Z axis extents <minX> <minY> <minZ> <maxX> <maxY> <maxZ> sphere <x> <y> <z> <radiusSquared> corner <v> <n> <t> (repeatable) vertex 0.0 0.0 0.0 (repeatable) normal 0.0 0.0 0.0 (repeatable) texcoord 0.0 0.0 (repeatable) lod (repeatable) lengthPerPixel <value> matref <name> (repeatable) dlist # display list for this material set sphere <x> <y> <z> <radiusSquared> points 0 (repeatable) lines 0 1 (repeatable) lineloop 0 1 (repeatable) linestrip 0 1 (repeatable) tris 0 1 2 (repeatable) tristrip 0 1 2 (repeatable) trifan 0 1 2 (repeatable) quads 0 1 2 3 (repeatable) quadstrip 0 1 2 3 (repeatable) polygon 0 1 2 (repeatable) end # matref end # lod end # drawInfo
Valid parameters for drawinfo are:
|decorative||disables drawinfo in older clients|
|angvel||causes the mesh object to spin at a given rate|
|corner||this is a series of points specified by the indexes of the vertices, normals, and texcoords|
|lod||sections that determine which faces/points will be rendered at specified distances (lengthPerPixel)|
|lengthPerPixel||distance from which the points will be rendered, 0 is close, .3 is about as far away as is needed|
|matref||material to use as defined in the materials object|
|tris||index numbers of corners that create triangles|
|tristrip||series of points that form a chain of triangles.|
|trifan||a series of points that create triangles that fan out from a single point. That point, usually in the center, is placed first in the series. Trifans are used only in pyramid and cone-shaped meshes.|
|quads||points that create 4-sided mesh planes|
|quadstrip||series of points that create a chain of 4-sided planes. Similarly to tristrips, the series zig-zags between the points, starting in the counter-clockwise direction.|
|polygon||same as quads except for planes of more than 4 sides.|
DrawInfo is only applied to existing meshes. If you look closely in places like Louman's Mystic Valley, shrubbery and trees will change in appearance slightly when viewed from about 200 units away.
There is currently no support for drawInfo except for hand-editing
DrawInfo was only recently added (by trepan) and is rarely used for anything other than experimental and proof-of-concept maps. Notable exceptions to this are: Louman's Mystic Valley, and Louman's Churchyard.