Openscad quick copy of geometric objects through loops

OPENSCAD supports variables and loops, allowing you to quickly replicate large numbers of geometries and lay them out in a recursive manner.

Cyclic variables can be enumerations, intervals, and vector objects, and the loop body supports geometric object construction, coordinate translation and rotation, and orthogonal.

Recursive variables for loops:

vectors (vector):

for (variable=<vector>) {<do_something>-<variable> are assigned to each successive value in the VEC Tor

Range (interval, range):

for (variable=<range>) {<do_something>}

Nested Loops : for (variable1 = <range or vector>, variable2 = <range or vector>) <do something, Using both variables>
For loops can is nested, just as in normal programs. A shorthand is so both iterations can be given in the same for statement

Usage example 1-iteration over a vector:
for (z = [-1, 1])//double iterations, z =-1, z = 1{translate ([0, 0, z]) cube (size = 1, center = false);}

Openscad iteration over a vector

Usage example 2a-iteration over a range:
for (i = [0:5]) {Rotate (i * 360/6, [1, 0, 0]) translate ([0, ten, 0]) sphere (r = 1);}

Openscad iteration over a range)

Usage example 2b-iteration over a range specifying an in Crement:

// note: the middle parameter in  the range designation //  (' 0.2 '  in this case)  is the  ' Increment-by '  value// Warning: Depending on the  ' increment-by '  value,  The// real end value may be smaller than the given one.for   ( i = [0 : 0.2 : 5] ) {    rotate ( i  * 360 / 6, [1, 0, 0])     translate ([0, 10, 0 ])     sphere (r = 1);}

Usage example 3-iteration over a vector of vectors (rotation):
for (i = [[0, 0, 0], [ten, +], [[+], [+], []]) {rotate (i) CU Be ([+, a], center = true);}

Openscad for loop (rotation)

Usage example 4-iteration over a vector of vectors (translation):
for (i = [ [ 0,  0,   0],           [10, 12, 10],            [20, 24, 20],            [30, 36, 30],            [20, 48, 40],           [10 ,  60, 50] ]) {    translate (i)     cube ([50, 15,  10], center = true);}

Openscad for Loop (translation)

Nested Loop Example

For (Xpos=[0:3], ypos = [2,4,6])//Does twelve iterations, using each xpos with each ypos translate ([Xpos*ypos, ypos, 0]) Cube ([0.5, 0.5, 0.5]);

Intersection for Loop

Iterate over the values in a vector or range and take a intersection of the contents.

Note: intersection_for() is a work around because of a issue so cannot get the expected results using a combination of the standard an for() D intersection() statements. The reason is for() a implicit of the union() contents.

Parameters

• <loop variable name>

• Name of the variable to use within the for loop.

Usage example 1-loop over a range:
Intersection_for (n = [1:6]) {rotate ([0, 0, n *]) {translate ([5,0,0]) sphere (r=12); }}

Openscad Intersection for

Usage Example 2-rotation :
Intersection_for (i = [[0, 0, 0], [100, 20, 2], [+, +, +]]) {rotate (i) cube ([]; 0], center = true);}

Openscad intersection for (rotation)

Openscad quick copy of geometric objects through loops