revolve2D

Form 3D matrix from revolution of 2D matrix.

Syntax

mat3D = revolve2D(mat2D)

Description

revolve2D revolves the values of a 2D matrix about the x axis (or matrix rows) to form a 3D matrix. A single point is taken as the x-axis origin, thus for an input matrix of size m by n, the output matrix will be m by (2n-1) by (2n-1). Values outside the interpolation range are set to zero. An example of revolving a 2D triangle is shown below.

% create a triangle in a 2D grid
triangle = tril(ones(10, 10));

% rotate in 3D
triangle_3D = revolve2D(triangle);

% plot the revolved triangle
voxelPlot(triangle_3D);
camup([0, -1, 0]);

Inputs

mat2D

2D input matrix

Outputs

mat3D

3D output matrix

See Also

interp1