The File Format

August 8, 2021 1 minute read

File Format

type	name
	Vertex data
v	vertices[顶点]
vt	Texture vertices
vn	Vertex normals [顶点法线]
vp	Parameter space vertices [参数空格顶点]
	表面属性(surface attributes)
deg	Degree[度]
bmat	Basis matrix
step	Step size
cstype	Curve or surface type[曲线或表面类型]
	Elements
p	point
l	line
f	face
curv	Curve
curv2	2D curve
surf	Surface
	表面主体陈述(surface body statements)
parm	Parameter values [ 参数值]
trim	Outer trimming loop[ 外部修剪循环]
hole	Inner trimming loop[ 内部整修循环]
scrv	Special curve[ 特殊曲线]
sp	Special point[ 特殊的点]
end	End statement[ 结束陈述]
	渲染属性(render attributes)
bevel	Bevel interpolation [导角插值 ]
c_interp	Color interpolation [颜色插值 ]
d_interp	Dissolve interpolation [溶解插值 ]
lod	Level of detail [细节层次 ]
usemtl	Material name [材质名称 ]
mtllib	Material library [材质库 ]
shadow_obj	Shadow casting [投射阴影 ]
trace_obj	Ray tracing [光线跟踪 ]
ctech	Curve approximation technique [曲线近似技术 ]
stech	Surface approximation technique [表面近似技术 ]