Changeset View
Changeset View
Standalone View
Standalone View
binaries/data/mods/public/maps/random/rmgen/painter/DunePainter.js
| /* | |||||
| @param {Bool} type - ELEVATION_MODIFY or ELEVATION_SET | |||||
| @param {Float} scale - global scale of dune size ( width and height) - higher values make dunes bigger | |||||
| @param {Float} vertical_scale - scale of dune height - higher makes dunes taller | |||||
| */ | |||||
| function DunePainter(type=ELEVATION_MODIFY, scale=1, vertical_scale=1){ | |||||
| this.type = type; | |||||
| this.scale = scale; | |||||
| this.vertical_scale = vertical_scale; | |||||
| } | |||||
| /* | |||||
| Dune base shape | |||||
| @param {Float} - x [0,1] value | |||||
| @param {Float} - xm [0,1] position of the dune crest | |||||
| @param {Bool} - d true for dune false for dome | |||||
| */ | |||||
| DunePainter.prototype.dune = function(x,crest_x=0.75,dune=true){ | |||||
| if( x < crest_x ){ return (1.0-Math.cos(Math.PI*x/crest_x))*0.5; } | |||||
| else{ if(dune){ return (1.0-Math.cos(Math.PI*(x-1.0)/(crest_x-1.0)))*0.5; } | |||||
| else{ return 1.0-Math.cos(Math.PI*(x-1.0)/(crest_x-1.0)*0.5); } | |||||
| } | |||||
| } | |||||
| DunePainter.prototype.paint = function(area){ | |||||
| const points = area.getPoints(); | |||||
| const length = points.length; | |||||
| //1st dune layer | |||||
| const h1_1 = perlin_noise(points,6,2,1,1.1,true); | |||||
| const h1_2 = perlin_noise(points,3,2,1,1,true); | |||||
| const L1 = 17.0*this.scale; | |||||
| //2on dune layer | |||||
| const h2_1 = perlin_noise(points,8,1,2,2,true); | |||||
| const h2_2 = perlin_noise(points,4,2,2,2,true); | |||||
| const L2 = 14.0*this.scale; | |||||
| //loop all the points | |||||
| for (var i = 0; i < length; i++){ | |||||
| const X = points[i].x; | |||||
| const Y = points[i].y; | |||||
| //main dunes creation | |||||
| const v1 = ((X+h1_1[i]*13+Y*0.1)%L1)/L1; | |||||
| const h1 = this.dune(v1,0.60,false)*9*0.9 + h1_1[i]*h1_2[i]*150*0.1; | |||||
| //secondary dunes | |||||
| const v2 = ((X+h2_1[i]*13+Y*0.1)%L2)/L2; | |||||
| const h2 = this.dune(v2,0.60,false)*9*0.9 + h2_2[i]*50*0.1; | |||||
| const h = (h1*0.8 + h2*0.2)*this.vertical_scale*this.scale; | |||||
| //add or set height | |||||
| this.type ? g_Map.setHeight(points[i],g_Map.getHeight(points[i])+h) : g_Map.setHeight(points[i],h); | |||||
| } | |||||
| } | |||||
| No newline at end of file | |||||
Wildfire Games · Phabricator