zeVertex

Use .new("vertex") to create the object. It is used to hold coordinates of vertices and can be shared by multiple shape objects.

:add(x, y, z)

Adds a vertex (x, y, z) to the object.

:add{x, y, z, ...}

Adds data to the object through a Lua table, which should contain x-, y-, and z- coordinates.

:add(array)

Transfers data in the array to the vertex object. The number of vectors of the array must be larger than or equal to three. Vertex x-, y- and z- data should be in the first to the third vectors.

:clear()

Clears data in the object.

:get(idx)

Returns x, y, and z at the index. The first dataset is at index 0.

:get(arr)

Transfers vertex data to the array. The array must have three vectors and the same number of records as the vertex object.

:min()

Returns the minimums of x, y, and z.

:max()

Returns the maximums of x, y, and z.

:translate(dx, dy, dz)

Adds offset dx, dy, dz to x, y, and z.

:scale(sx, sy, sz)

Scale x, y, and z by factors of sx, sy, and sz.

:rotatex(angle)

Rotation transform about x-axis for x, y, and z.

:rotatey(angle)

Rotation transform about y-axis for x, y, and z.

:rotatez(angle)

Rotation transform about y-axis for x, y, and z.

:size()

Returns the number of vertices the object contains.