openfl
Version:
A fast, productive library for 2D cross-platform development.
195 lines (178 loc) • 7.68 kB
JavaScript
// Class: openfl.display._internal.SimplexNoise2D
var $global = typeof window != "undefined" ? window : typeof global != "undefined" ? global : typeof self != "undefined" ? self : this
$global.Object.defineProperty(exports, "__esModule", {value: true});
var __map_reserved = {};
// Imports
var $hxClasses = require("./../../../hxClasses_stub").default;
var $hxEnums = require("./../../../hxEnums_stub").default;
var $import = require("./../../../import_stub").default;
var $extend = require("./../../../extend_stub").default;
function openfl_display__$internal_AbstractNoise() {return require("./../../../openfl/display/_internal/AbstractNoise");}
function Std() {return require("./../../../Std");}
// Constructor
var SimplexNoise2D = function(seed,octaves,channels,grayScale,falloff,stitch,stitch_threshold) {
if(stitch_threshold == null) {
stitch_threshold = 0.05;
}
if(stitch == null) {
stitch = false;
}
(openfl_display__$internal_AbstractNoise().default).call(this,seed,octaves,channels,grayScale,falloff,stitch,stitch_threshold);
this.p_perm = [];
var _g = 0;
while(_g < 512) {
var i = _g++;
this.p_perm[i] = SimplexNoise2D.P[i & 255];
}
}
// Meta
SimplexNoise2D.__name__ = "openfl.display._internal.SimplexNoise2D";
SimplexNoise2D.__isInterface__ = false;
SimplexNoise2D.__super__ = (openfl_display__$internal_AbstractNoise().default);
SimplexNoise2D.prototype = $extend((openfl_display__$internal_AbstractNoise().default).prototype, {
fill: function(bitmap,_scale_x,_scale_y,_scale_z) {
var width = bitmap.width;
var height = bitmap.height;
var octaves = this.octaves;
var octaves_frequencies = this.octaves_frequencies;
var octaves_persistences = this.octaves_persistences;
var isRed = (1 & this.channels) == 1;
var isGreen = (2 & this.channels) == 2;
var isBlue = (4 & this.channels) == 4;
var channels = 0;
if(isRed) {
++channels;
}
if(isGreen) {
++channels;
}
if(isBlue) {
++channels;
}
var grayscale = this.grayscale;
var stitch_w = (Std().default).int(this.stitch_threshold * width);
var stitch_h = (Std().default).int(this.stitch_threshold * height);
var _g = 0;
var _g1 = height;
while(_g < _g1) {
var py = _g++;
var py_delta_g = py - 10.0;
var py_delta_b = py + 10.0;
var _g2 = 0;
var _g11 = width;
while(_g2 < _g11) {
var px = _g2++;
var color1 = 0.0;
var color2 = 0.0;
var color3 = 0.0;
var px_delta_g = px - 10.0;
var px_delta_b = px + 10.0;
var _g3 = 0;
var _g12 = octaves;
while(_g3 < _g12) {
var i = _g3++;
var frequency = octaves_frequencies[i];
var persistence = octaves_persistences[i];
color1 += this.noise(px * (1.0 / _scale_x) * frequency,py * (1.0 / _scale_y) * frequency) * persistence;
if(!grayscale) {
if(1 < channels) {
color2 += this.noise((px + px_delta_g) * (1.0 / _scale_x) * frequency,(py + py_delta_g) * (1.0 / _scale_y) * frequency) * persistence;
}
if(2 < channels) {
color3 += this.noise((px + px_delta_b) * (1.0 / _scale_x) * frequency,(py + py_delta_b) * (1.0 / _scale_y) * frequency) * persistence;
}
}
}
var color = 0;
if(grayscale) {
color = this.color(color1,color1,color1);
} else if(isRed && isGreen && isBlue) {
color = this.color(color1,color2,color3);
} else if(isRed && isGreen) {
color = this.color(color1,color2,null);
} else if(isRed && isBlue) {
color = this.color(color1,null,color2);
} else if(isGreen && isBlue) {
color = this.color(null,color1,color2);
} else if(isRed) {
color = this.color(color1,null,null);
} else if(isGreen) {
color = this.color(null,color1,null);
} else if(isBlue) {
color = this.color(null,null,color1);
}
if(this.stitch) {
color = this.stitching(bitmap,color,px,py,stitch_w,stitch_h,width,height);
}
bitmap.setPixel32(px,py,color);
}
}
},
noiseToColor: function(noise) {
return (Std().default).int((noise * this.persistence_max + 1.0) * 0.5 * 255);
},
noise: function(xin,yin) {
var n0;
var n1;
var n2;
var sqrt3 = Math.sqrt(3.0);
var f2 = 0.5 * (sqrt3 - 1.0);
var s = (xin + yin) * f2;
var i = this.fastfloor(xin + s);
var j = this.fastfloor(yin + s);
var g2 = (3.0 - sqrt3) / 6.0;
var t = (i + j) * g2;
var X0 = i - t;
var Y0 = j - t;
var x0 = xin - X0;
var y0 = yin - Y0;
var i1;
var j1;
if(x0 > y0) {
i1 = 1;
j1 = 0;
} else {
i1 = 0;
j1 = 1;
}
var x1 = x0 - i1 + g2;
var y1 = y0 - j1 + g2;
var x2 = x0 - 1.0 + 2.0 * g2;
var y2 = y0 - 1.0 + 2.0 * g2;
var ii = i & 255;
var jj = j & 255;
var gi0 = this.p_perm[ii + this.p_perm[jj]] % 12;
var gi1 = this.p_perm[ii + i1 + this.p_perm[jj + j1]] % 12;
var gi2 = this.p_perm[ii + 1 + this.p_perm[jj + 1]] % 12;
var t0 = 0.5 - x0 * x0 - y0 * y0;
if(t0 < 0) {
n0 = 0.0;
} else {
t0 *= t0;
n0 = t0 * t0 * this.dot2d(SimplexNoise2D.grad3[gi0],x0,y0);
}
var t1 = 0.5 - x1 * x1 - y1 * y1;
if(t1 < 0) {
n1 = 0.0;
} else {
t1 *= t1;
n1 = t1 * t1 * this.dot2d(SimplexNoise2D.grad3[gi1],x1,y1);
}
var t2 = 0.5 - x2 * x2 - y2 * y2;
if(t2 < 0) {
n2 = 0.0;
} else {
t2 *= t2;
n2 = t2 * t2 * this.dot2d(SimplexNoise2D.grad3[gi2],x2,y2);
}
return 70.0 * (n0 + n1 + n2);
}
});
SimplexNoise2D.prototype.__class__ = SimplexNoise2D.prototype.constructor = $hxClasses["openfl.display._internal.SimplexNoise2D"] = SimplexNoise2D;
// Init
// Statics
SimplexNoise2D.__meta__ = { obj : { SuppressWarnings : ["checkstyle:FieldDocComment"]}, statics : { P : { SuppressWarnings : ["checkstyle:ConstantName"]}}}
SimplexNoise2D.grad3 = [[1,1,0],[-1,1,0],[1,-1,0],[-1,-1,0],[1,0,1],[-1,0,1],[1,0,-1],[-1,0,-1],[0,1,1],[0,-1,1],[0,1,-1],[0,-1,-1]]
SimplexNoise2D.P = [151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,23,190,6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87,174,20,125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,102,143,54,65,25,63,161,1,216,80,73,209,76,132,187,208,89,18,169,200,196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,250,124,123,5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,223,183,170,213,119,248,152,2,44,154,163,70,221,153,101,155,167,43,172,9,129,22,39,253,19,98,108,110,79,113,224,232,178,185,112,104,218,246,97,228,251,34,242,193,238,210,144,12,191,179,162,241,81,51,145,235,249,14,239,107,49,192,214,31,181,199,106,157,184,84,204,176,115,121,50,45,127,4,150,254,138,236,205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180,151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,23,190,6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87,174,20,125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,83,111,229,122,60,211,133,230,220,105,92,41,55,46,245,40,244,102,143,54,65,25,63,161,1,216,80,73,209,76,132,187,208,89,18,169,200,196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,250,124,123,5,202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,223,183,170,213,119,248,152,2,44,154,163,70,221,153,101,155,167,43,172,9,129,22,39,253,19,98,108,110,79,113,224,232,178,185,112,104,218,246,97,228,251,34,242,193,238,210,144,12,191,179,162,241,81,51,145,235,249,14,239,107,49,192,214,31,181,199,106,157,184,84,204,176,115,121,50,45,127,4,150,254,138,236,205,93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180]
// Export
exports.default = SimplexNoise2D;