window.prepareFur = function() {
	var shells = 30;
	
	var materials = [];
	var meshes = [];
	
	var diffuseTexture = new BABYLON.Texture("textures/leopard_fur.jpg", scene);
	var heightTexture = new BABYLON.Texture("textures/speckles.jpg", scene);
	var furTexture = BABYLON.FurMaterial.GenerateTexture("furTexture", scene);
	
	var fur = new BABYLON.FurMaterial("fur0", scene);
	fur.furLength = 4;
	fur.furAngle = 0;
	fur.furColor = new BABYLON.Color3(0.2, 0.2, 0.2);
	fur.diffuseTexture = diffuseTexture;
	fur.furOffset = 0;
	fur.furTexture = furTexture;
	
	var setValue = function(property, value) {
		for (var i=0; i < materials.length; i++) {
			materials[i][property] = value;
		}
	}
	
	var resetFur = function() {
		for (var i=1; i < materials.length; i++) {
			materials[i].dispose();
		}
		for (var i=1; i < meshes.length; i++) {
			meshes[i].dispose();
		}
		
		materials = [];
		meshes = [];
	};
	
	var setMeshesVisible = function(visible) {
		for (var i=1; i < meshes.length; i++) {
			meshes[i].isVisible = visible;
		}
	}
	
	var configureFur = function(mesh, apply) {
		meshes = [mesh];
		materials = [fur];
		
		mesh.material = fur;
		
		for (var i = 1; i < shells; i++) {
			var offsetFur = new BABYLON.FurMaterial("fur" + i, scene);
			offsetFur.furLength = 4;
			offsetFur.furAngle = 0;
			offsetFur.furColor = new BABYLON.Color3(0.2, 0.2, 0.2);
			offsetFur.diffuseTexture = diffuseTexture;
			offsetFur.furOffset = i / shells;
			offsetFur.furTexture = furTexture;
			offsetFur.highLevelFur = fur.highLevelFur;
			materials.push(offsetFur);
			
			var offsetMesh = mesh.clone(mesh.name + i);
			offsetMesh.isVisible = fur.highLevelFur && apply;
			offsetMesh.material = offsetFur;
			offsetMesh.skeleton = mesh.skeleton;
			meshes.push(offsetMesh);
		}
		
		for (var i=0; i < scene.skeletons.length; i++) {
			scene.beginAnimation(scene.skeletons[i], 0, 100, true, 0.8);
		}
	}

	// fur length
    registerRangeUI("fur", "Fur length", 0, 45, function(value) {
		setValue("furLength", value);
    }, function() {
        return fur.furLength;
    });
	
	// fur angle
    registerRangeUI("fur", "Fur angle", 0, Math.PI/2, function(value) {
		setValue("furAngle", value);
    }, function() {
        return fur.furAngle;
    });
    
    // fur color
	registerColorPicker("fur", "Fur color", "#703605", function(value) {		
		fur.furColor.r = value.r/255;
		fur.furColor.g = value.g/255;
		fur.furColor.b = value.b/255;
	}, function() {
		return fur.furColor;
	});
	
	var DTON = false;
	registerButtonUI("fur", "Tgl Diffuse Tex", function() {
		DTON = !DTON;
		setValue("diffuseTexture", DTON ? diffuseTexture : null);
	});
	
	var HTON = false;
	registerButtonUI("fur", "Tgl Height Tex", function() {
		HTON = !HTON;
		setValue("heightTexture", HTON ? heightTexture : null);
	});
	
	registerRangeUI("fur", "Hight Level fur", false, true, function(value) {
		setValue("highLevelFur", value);
		setMeshesVisible(value);
    }, function() {
        return fur.highLevelFur;
    });
	
	registerRangeUI("fur", "Fur Gravity", 0, 1, function(value) {
		setValue("furGravity", new BABYLON.Vector3(value, value,value));
    }, function() {
        return fur.furGravity.x;
    });
	
	// fur animation speed
    registerRangeUI("fur", "Fur speed", 1, 1000, function(value) {
		setValue("furSpeed", value);
    }, function() {
        return fur.furSpeed;
    });
	
	// fur animation speed
    registerRangeUI("fur", "Fur Spacing", 0, 20, function(value) {
		setValue("furSpacing", value);
    }, function() {
        return fur.furSpacing;
    });
    
    return {
		/*
		materials: furs,
		meshes: meshes
		*/
		material: fur,
		resetFur: function() {
			resetFur();
		},
		configureFur: function(mesh, apply) {
			configureFur(mesh, apply);
		}
	};
};