surfaceTriangles: Create a Triangle Mesh Representing a Surface

In misc3d: Miscellaneous 3D Plots

Description

Creates a triangle mesh object representing a surface over a rectangular grid.

Usage

surfaceTriangles(x, y, f, color = "red", color2 = NA, alpha = 1,
                 fill = TRUE, col.mesh = if (fill) NA else color,
                 smooth = 0, material = "default")

Arguments

x, y	numeric vectors.
f	numeric matrix of dimension length(x) by length(y) or vectorized function of two arguments.
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".

Value

Returns a triangle mesh object representing the surface.

See Also

persp, rgl.surface, surface3d.

Examples

  drawScene(surfaceTriangles(seq(-1,1,len=30), seq(-1,1,len=30),
                             function(x, y) (x^2 + y^2), color2 = "green"))
  drawScene.rgl(surfaceTriangles(seq(-1,1,len=30), seq(-1,1,len=30),
                             function(x, y) (x^2 + y^2), color2 = "green"))

Example output

Warning message:
no DISPLAY variable so Tk is not available 
[1] 7 8

misc3d documentation built on Oct. 8, 2021, 1:06 a.m.