triangles: Triangle Mesh Functions
In misc3d: Miscellaneous 3D Plots

Description Usage Arguments Details Value

Functions to create and modify triangle mesh objects representing 3D surfaces..

makeTriangles(v1, v2, v3, color = "red", color2 = NA, alpha = 1,
              fill = TRUE, col.mesh = if (fill) NA else color,
              smooth = 0, material = "default")
updateTriangles(triangles, color, color2, alpha, fill, col.mesh,
                material, smooth)
translateTriangles(triangles, x = 0, y = 0, z = 0)
scaleTriangles(triangles, x = 1, y = x, z = x)
transformTriangles(triangles, R)

`v1,v2,v3`	specification of triangle coordinates. If all three are provided then they should be matrices with three columns representing coordinates of the first, second, and third vertices of the triangles. If only `v1` and `v2` are provided then `v1` should be a numeric matrix with three rows specifying coordinates of vertices, and `v2` should be an integer matrix with three rows specifying the indexes of the vertices in the triangles. If only `v1` is provided then it should be a matrix with three columns and number of rows divisible by three specifying the vertices of the triangles in groups of three.
`triangles`	triangle mesh object.
`x,y,z`	numeric of length one. Amounts by which to translate or scale corresponding coordinates.
`color`	color to use for the surface. Can also be a function of three arguments. This is called with three arguments, the coordinates of the midpoints of the triangles making up the surface. The function should return a vector of colors to use for the triangles.
`color2`	opposite face color.
`alpha`	alpha channel level, a number between 0 and 1.
`fill`	logical; if `TRUE`, drawing should use filled surfaces; otherwise a wire frame should be drawn.
`col.mesh`	color to use for the wire frame.
`smooth`	integer or logical specifying Phong shading level for "standard" and "grid" engines or whether or not to use shading for the "rgl" engine.
`material`	material specification; currently only used by "standard" and "grid" engines. Currently possible values are the character strings "dull", "shiny", "metal", and "default".
`R`	4 by 4 homogeneous coordinate transformation matrix to apply.