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/*
* Model creation script for a 16-pixel triangular grid made up
* of strips in a zig-zag layout.
*
* Fields in each pixel's JSON layout:
*
* point: A 3D vector, arbitrary coordinates. Scaled to look good
* in the Open Pixel Control "gl_server" pre-visualizer.
* This describes the centroid of the triangle cell.
*
* neighbors: List of array indices for neighbors of this cell
*
* 2014 Micah Elizabeth Scott
* This file is released into the public domain.
*/
// Each triangle side is 1 unit. "h" is the triangle height
var w = 1;
var h = Math.sin(60 * Math.PI / 180);
// Move the centroid to the origin
var x = -1.5;
var z = -h*4/3;
cells = []
// Bottom row, left to right
cells[ 0] = { point:[ x + w*0.0, 0, z + h*0 + h*1/3 ], neighbors: [ 1 ] };
cells[ 1] = { point:[ x + w*0.5, 0, z + h*0 + h*2/3 ], neighbors: [ 11, 2, 0 ] };
cells[ 2] = { point:[ x + w*1.0, 0, z + h*0 + h*1/3 ], neighbors: [ 3, 1 ] };
cells[ 3] = { point:[ x + w*1.5, 0, z + h*0 + h*2/3 ], neighbors: [ 9, 4, 2 ] };
cells[ 4] = { point:[ x + w*2.0, 0, z + h*0 + h*1/3 ], neighbors: [ 5, 3 ] };
cells[ 5] = { point:[ x + w*2.5, 0, z + h*0 + h*2/3 ], neighbors: [ 7, 6, 4 ] };
cells[ 6] = { point:[ x + w*3.0, 0, z + h*0 + h*1/3 ], neighbors: [ 5 ] };
// Second row, right to left
cells[ 7] = { point:[ x + w*2.5, 0, z + h*1 + h*1/3 ], neighbors: [ 5, 8 ] };
cells[ 8] = { point:[ x + w*2.0, 0, z + h*1 + h*2/3 ], neighbors: [ 12, 9, 7 ] };
cells[ 9] = { point:[ x + w*1.5, 0, z + h*1 + h*1/3 ], neighbors: [ 3, 10, 8 ] };
cells[10] = { point:[ x + w*1.0, 0, z + h*1 + h*2/3 ], neighbors: [ 14, 11, 9 ] };
cells[11] = { point:[ x + w*0.5, 0, z + h*1 + h*1/3 ], neighbors: [ 1, 10 ] };
// Third row, left to right
cells[12] = { point:[ x + w*1.0, 0, z + h*2 + h*1/3 ], neighbors: [ 8, 13 ] };
cells[13] = { point:[ x + w*1.5, 0, z + h*2 + h*2/3 ], neighbors: [ 15, 14, 13 ] };
cells[14] = { point:[ x + w*2.0, 0, z + h*2 + h*1/3 ], neighbors: [ 10, 14 ] };
// Top
cells[15] = { point:[ x + w*1.5, 0, z + h*3 + h*1/3 ], neighbors: [ 13 ] };
console.log(JSON.stringify(cells));