OpenSCAD Color Library

thingiverse

Rainbow Color Library Library to produce 2D array of RGB values scaled across an arbitrary size This thing does not make a printable object. The output from this thing is primarily to demonstrate the utility of the colorArray() function. The colorArray() function produces a 2D array of RGB values that can be used in other projects. Use: download the .scad file move the file somewhere in your home directory: /home/MyUser/OpenSCAD/myLibraries/ Add the following line to one of your project files: use Getting Help: use from within OpenScad help_colors() for a list of all modules for help with a specific module help_colors("coloraArray"); rinse, repeat. You are more than welcome to try and print this, but I made no attempt to make the objects properly manifold. Aaron Ciuffo (Txoof) Reach me at google mail: aaron dot ciuffo https://www.thingiverse.com/txoof/about released under GPL V3.0 Latest versions can be found at github: https://github.com/txoof/OpenSCADColors User Facing Functions function colorArray create an X by Y array of RGB values accepts: columns (integer): divisions of color wheel rows (integer): number of iterations from origin scaled (boolean): when true, return a value scaled by distance from origin returns: X by Y array of RGB values example: myArray = colorArray(3, 3, scaled = false); for (row=[0:len(myArray)-1]) { //three iterations echo(colorArray[row]); } ECHO: [[1, 0, 0], [1, 0, 0], [1, 0, 0]] ECHO: [[0, 1, 0], [0, 1, 0], [0, 1, 0]] ECHO: [[0, 0, 1], [0, 0, 1], [0, 0, 1]] function chord calculates chord length given a radius and angle accepts: r (real): radius of circle angle (real): angle of segment returns: length of chord (real) example: echo(chord(r = 10, angle = 60)); ECHO: 5.17638 function RGB returns RGB value as 1D array of reals value between 0 and 1 accepts: angle (real) returns: RGB (array of real) example: echo(RGB(30)) ECHO: [1, 0.546691, 0] funciton RGBScale returns RGB value as 1D array of reals scaled by distance from origin (0-1) accepts: angle (real) r (real): radius between 0-1 returns: RGB (array of real) example: echo(RGBScale(55, 1)); ECHO: [1, 0.941923, 0] echo(RGBScale(55, 0.5)); ECHO: [1, 0.970961, 0.5] echo(RGBScale(55, 0)); ECHO: [1, 1, 1] Test Modules module wheel draws a color wheel accepts: segments (integer): number of segments to divide the wheel into rings (integer): number of iterations scaled (boolean): true - use color scaling pixel (1D array): [x dimension, y dimension, z dimension] of elements module objDemo draws an array of objects using the colorArray() function to provide colors accepts: rows (integer): number of rows of objects columns (integer): number of columns of objects size (real): radius of objects minQual (integer): minimum quality value to use step (integer): steps to increase quality by scaled (boolean): when true, use color scaling module demoCyl draw a hollow cylinder using the colorArray() function accepts: segments (integer): number of segments to divide cylinder into layers (integer): number of layers r (real): radius of cylinder scaled (boolean): when true use color scaling