115 lines
3.9 KiB
HTML
115 lines
3.9 KiB
HTML
<HTML>
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<HEAD>
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<TITLE>PVVMUD - </TITLE>
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<LINK REL=STYLESHEET HREF="/pvvmud/pvvmud.css" TYPE="text/css">
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</HEAD>
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<BODY>
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<H1>Geometry (geo) file format</H1>
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<PRE>
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Status : suggestion
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Implementations : util/geo2bog
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geoexp.dle (3D Studio MAX file export plugin)
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</PRE>
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<P>Describing a 3D mesh object. This file is a ascii representation of the
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<A HREF="bogfileformat.html">bog file format</A>. The utility program
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<A HREF="geo2bog.html">geo2bog</A> converts from geo to bog file format.</P>
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<H2>Logical file structure</H2>
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<TABLE>
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<TR><TH></TH><TH></TH></TR>
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<TR><TD VALIGN=top><A NAME="GEOFILE">geoFile</TD><TD>= geoHead + Geometry list
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<TR><TD VALIGN=top><A NAME="GEOHEAD">geoHead</TD><TD>= (File version)
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<TR><TD VALIGN=top><A NAME="FILEVER">File version</TD><TD>= * Version number *
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<TR><TD VALIGN=top><A NAME="GEOMETRYLIST">Geometry list</TD><TD>= {Geometry}
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<TR><TD VALIGN=top><A NAME="GEOMETRY">Geometry</TD><TD>= (Object name) + Vertex list + Normal list + TexCoord list + Polygon list
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<TR><TD VALIGN=top><A NAME="OBJECTNAME">Object name</TD><TD>= * String that identify sub objects *
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<TR><TD VALIGN=top><A NAME="VERTEXLIST">Vertex list</TD><TD>= {Vertex}
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<TR><TD VALIGN=top><A NAME="VERTEX">Vertex</TD><TD>= x-coord + y-coord + z-coord
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<TR><TD VALIGN=top><A NAME="NORMALLIST">Normal list</TD><TD>= {Normal}
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<TR><TD VALIGN=top><A NAME="NORMAL">Normal</TD><TD>= x-coord + y-coord + z-coord
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<TR><TD VALIGN=top><A NAME="TEXCOORDLIST">TexCoord list</TD><TD>= {TexCoord}
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<TR><TD VALIGN=top><A NAME="TEXCOORD">TexCoord</TD><TD>= u-coord + v-coord
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<TR><TD VALIGN=top><A NAME="POLYGONLIST">Polygon list</TD><TD>= {Polygon}
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<TR><TD VALIGN=top><A NAME="POLYGON">Polygon</TD><TD>= Polygon type + Material name + Vertex index list + Normal index list + TexCood index list
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<TR><TD VALIGN=top><A NAME="POLYGONTYPE">Polygon type</TD><TD>=
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[ "Polygon" | "Triangles" | "Quads" | "Quad strip" |
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"Triangle strip" | "Triangle fan" ]
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<TR><TD VALIGN=top><A NAME="MATERIALNAME">Material name</TD><TD>=
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* A string that identify the material. *
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<TR><TD VALIGN=top><A NAME="VERTEXINDEXLIST">Vertex index list</TD><TD>= {index}
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<TR><TD VALIGN=top><A NAME="NORMALINDEXLIST">Normal index list</TD><TD>= {index}
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<TR><TD VALIGN=top><A NAME="TEXCOORDINDEXLIST">TexCoord index list</TD><TD>= {index}
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<TR><TD VALIGN=top><A NAME="INDEX">Index</TD><TD>=
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* Pointer to element in a table. *
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</TABLE>
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<H2>Example</H2>
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<PRE>
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GEO(Version=1)
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# Box with size = 2
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# Two sides with equal materials.
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Geometry(Name="Box") {
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VertexList = [ ( -1.0, -1.0, 1.0 ),
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( 1.0, -1.0, 1.0 ),
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( 1.0, 1.0, 1.0 ),
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( -1.0, 1.0, 1.0 ),
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( -1.0, -1.0, -1.0 ),
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( 1.0, -1.0, -1.0 ),
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( 1.0, 1.0, -1.0 ),
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( -1.0, 1.0, -1.0 ) ];
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NormalList = [ ( 1.0, 0.0, 0.0 ),
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( 0.0, 1.0, 0.0 ),
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( 0.0, 0.0, 1.0 ),
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( -1.0, 0.0, 0.0 ),
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( 0.0, -1.0, 0.0 ),
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( 0.0, 0.0, -1.0 ) ];
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TexCoordList = [ ( 0.0, 0.0 ),
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( 1.0, 0.0 ),
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( 1.0, 1.0 ),
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( 0.0, 1.0 ) ];
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Polygon {
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Type = QUADS;
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Material = "1";
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Vertex = [ 1, 5, 6, 2 ];
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Normal = [ 0 ];
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TexCoord = [ 0, 1, 2, 3 ];
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}
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Polygon {
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Type = QUADS;
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Material = "2";
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Vertex = [ 2, 6, 7, 3, 0, 1, 2, 3 ];
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Normal = [ 1, 2 ];
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TexCoord = [ 0, 1, 2, 3, 0, 1, 2, 3 ];
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}
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Polygon {
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Type = QUADS;
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Material = "3";
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Vertex = [ 3, 7, 4, 0 ];
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Normal = [ 3 ];
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TexCoord = [ 0, 1, 2, 3 ];
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}
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Polygon {
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Type = QUADS;
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Material = "4";
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Vertex = [ 0, 4, 5, 1 ];
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Normal = [ 4 ];
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TexCoord = [ 0, 1, 2, 3 ];
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}
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Polygon {
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Type = QUADS;
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Material = "5";
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Vertex = [ 4, 7, 6, 5 ];
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Normal = [ 5 ];
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TexCoord = [ 0, 1, 2, 3 ];
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}
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}
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</PRE>
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</BODY>
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</HTML>
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