h.jscad

// title      : H
// author     : Udi Finkelstein
// license    : MIT License
// revision   : 1.0
// description: 
// file       : h.jscad

var cylresolution = 16;

// Here we define the user editable parameters:
function getParameterDefinitions () {
  return [
    {name: 'general', caption: 'General', type: 'group'},
    {name: 'quality', type: 'choice', caption: 'Quality', values: [8, 16, 32, 64], captions: ['Draft', 'Med', 'High', 'Very High'], initial: 8},
    {name: 'general', caption: 'Base', type: 'group'},
    {name: 'bheight', caption: 'bheight:', type: 'float', initial: 12},
    {name: 'bdiameter', caption: 'bdiameter:', type: 'float', initial: 50, min: 0.0, max: 1.0, step: 0.1},
    {name: 'general', caption: 'Body', type: 'group'},
    {name: 'hheight', caption: 'hheight:', type: 'float', initial: 100},
    {name: 'hwidth', caption: 'hwidth:', type: 'float', initial: 50},
    {name: 'general', caption: 'Candle holder', type: 'group'},
    {name: 'cheight', caption: 'height:', type: 'float', initial: 10},
    {name: 'cbase', caption: 'elevation above body:', type: 'float', initial: 7},
    {name: 'chdiameter', caption: 'candle holder diameter:', type: 'float', initial: 20, min: 0.0, max: 1.0, step: 0.1},
    {name: 'cdepth', caption: 'candle hole depth:', type: 'float', initial: 7, min: 0.0, max: 1.0, step: 0.1},
    {name: 'cdiameter', caption: 'diameter:', type: 'float', initial: 10, min: 0.0, max: 1.0, step: 0.1}
  ];
}

var PI = 3.14159;

function gen_x_s(params, i, angle) {
    if (i === 0) {
        return 0;
    } else {
        return params.hheight*(i/5)*Math.sin(angle/(180/PI));
    }
}

function gen_y_s(params, i, angle) {
    if (i === 0) {
        return 0;
    } else {
        return 0;
    }
}

function gen_z_s(params, i, angle) {
    if (i === 0) {
        return params.bheight+params.hheight/90*angle;
    } else {
        return params.bheight+params.hheight*(1-Math.abs(i)/5*(Math.cos(angle/(180/PI))));
    }
}

var cylresolution;

function gen_blob(params) {
    return sphere({r:10, center:true, fn:cylresolution});
}

function gen_candle(params) {
    return CSG.cylinder({start: [0, 0, 0], end: [0, 0, params.cheight], radius: params.chdiameter / 2, resolution: cylresolution})
    .subtract(CSG.cylinder({start: [0, 0, params.cheight-params.cdepth], end: [0, 0, params.cheight], radius: params.cdiameter / 2, resolution: cylresolution}));
}

function main (params) {
  cylresolution = params.quality;
  var bheight = params.bheight;
  var hheight = params.hheight;
  var bwidth = params.bwidth;
  var hwidth = params.hwidth;
  var bdiameter = params.bdiameter;
  var result = new CSG();
  
  var gen_x = gen_x_s;
  var gen_y = gen_y_s;
  var gen_z = gen_z_s;

  var hbase = CSG.cylinder({start: [0, 0, 0], end: [0, 0, bheight], radius: bdiameter / 2, resolution: cylresolution});
  //return hbase;
  for (i = -4; i <= 4; i++) {
      stop = (i === 0) ? 100 : 90;
      end = (i === 0) ? 95 : 90;
      step = (i === 0) ? stop/7.01 : (90/2/Math.abs(i));
      for (j = 0; j <= stop; j+= step) {
          if (i != 0 && j === 0) {
              continue;
          }
        hbase = hbase.union(gen_blob(params).translate([gen_x(params, i, j), gen_y(params, i, j), gen_z(params, i, j)]));
      }
      hbase = hbase.union(gen_candle(params).translate([gen_x(params, i, 90), gen_y(params, i, 90), gen_z(params, i, end)+params.cbase]));
    }
  return hbase;
}